深海游弋的鱼 – 第 123 页 – 智障儿童欢乐多

被优化为无排版和缩进的JavaScript代码，如何调试？

有时候网页上的JavaScript代码被优化器优化过后，会丢失原来的换行，导致整个的代码蜷缩成一行，完全没办法调试，此时我们就需要借助Chrome或者FireFox自带的代码调整功能来实现代码的调试了，如下图:

参考链接

Mac OSX下VirtualBox直接使用物理硬盘作虚拟机磁盘

目前VirtualBox只能用命令行来建立磁盘才可以使用物理硬盘。

如果是USB磁盘的话，那么需要从"关于本机"->"概览"->"系统报告"->"USB"中找到磁盘的名字，比如"disk2".

我们假定VirtualBox安装在"
/Applications/VirtualBox.app/"这个目录下面，要在"~/VirtualBox\ VMs/Ubuntu/"目录下面生成文件，则执行如下命令：

$ diskutil umountDisk disk2
$ sudo chown `whoami` /dev/disk2
$ mkdir ~/VirtualBox\ VMs
$ mkdir ~/VirtualBox\ VMs/Ubuntu
$ sudo /Applications/VirtualBox.app/Contents/MacOS/VBoxManage internalcommands createrawvmdk -filename ~/VirtualBox\ VMs/Ubuntu/Ubuntu.vmdk -rawdisk /dev/disk2
$ sudo chown `whoami` ~/VirtualBox\ VMs/Ubuntu/Ubuntu.vmdk

$ diskutil umountDisk disk2

$ sudo chown `whoami` /dev/disk2

$ mkdir ~/VirtualBox\ VMs

$ mkdir ~/VirtualBox\ VMs/Ubuntu

$ sudo /Applications/VirtualBox.app/Contents/MacOS/VBoxManage internalcommands createrawvmdk -filename ~/VirtualBox\ VMs/Ubuntu/Ubuntu.vmdk -rawdisk /dev/disk2

$ sudo chown `whoami` ~/VirtualBox\ VMs/Ubuntu/Ubuntu.vmdk

/dev/disk2表示机器上的第二块硬盘,每次插入新磁盘后，就会出现类似/dev/disk*的一个路径名。

最后，新建一个虚拟机，然后指定使用刚刚创建的磁盘即可。

参考链接

How do I install Mavericks onto external HD but from inside VirtualBox

macOS Sierra/Catalina/Big Sur支持NTFS/EXT4文件系统

1.安装`HomeBrew`

按照让Mac也能拥有apt-get类似的功能——Brew 的介绍配置安装HomeBrew。

2.安装`osxfuse`/`ext4fuse`/`ntfs-3g`

$ brew install osxfuse

# macOS Big Sur 需要确保 osxfuse 的版本大于等于 3.11.2,暂时不要升级到4.x版本，否则可能无法成功挂载

$ brew reinstall osxfuse

$ sudo mkdir /usr/local/sbin

$ sudo chown -R `whoami` /usr/local/sbin

$ brew reinstall ntfs-3g

$ brew install ext2fuse
 
$ brew install ext4fuse

$ brew install osxfuse

# macOS Big Sur 需要确保 osxfuse 的版本大于等于 3.11.2,暂时不要升级到4.x版本，否则可能无法成功挂载

$ brew reinstall osxfuse

$ sudo mkdir /usr/local/sbin

$ sudo chown -R `whoami` /usr/local/sbin

$ brew reinstall ntfs-3g

$ brew install ext2fuse

$ brew install ext4fuse

卸载命令为：

$ sudo bash /Library/Filesystems/osxfuse.fs/Contents/Resources/uninstall_osxfuse.app/Contents/Resources/Scripts/uninstall_osxfuse.sh

1	$ sudo bash /Library/Filesystems/osxfuse.fs/Contents/Resources/uninstall_osxfuse.app/Contents/Resources/Scripts/uninstall_osxfuse.sh

3.挂载磁盘设备

如果是USB磁盘的话，那么需要从"关于本机"->"概览"->"系统报告"->"USB"中找到磁盘的名字，比如"disk2".

这个信息也可以通过在终端执行命令看到：

$ diskutil list
/dev/disk0 (internal):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                         500.3 GB   disk0
   1:                        EFI EFI                     314.6 MB   disk0s1
   2:                 Apple_APFS Container disk1         500.0 GB   disk0s2

/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +500.0 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD            473.8 GB   disk1s1
   2:                APFS Volume Preboot                 49.2 MB    disk1s2
   3:                APFS Volume Recovery                509.9 MB   disk1s3
   4:                APFS Volume VM                      3.2 GB     disk1s4

/dev/disk2 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *500.1 GB   disk2
   1:                      Linux                         500.1 GB   disk2s1

$ diskutil list

/dev/disk0 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 500.3 GB disk0

1: EFI EFI 314.6 MB disk0s1

2: Apple_APFS Container disk1 500.0 GB disk0s2

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +500.0 GB disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 473.8 GB disk1s1

2: APFS Volume Preboot 49.2 MB disk1s2

3: APFS Volume Recovery 509.9 MB disk1s3

4: APFS Volume VM 3.2 GB disk1s4

/dev/disk2 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: FDisk_partition_scheme *500.1 GB disk2

1: Linux 500.1 GB disk2s1

如果已知是"EXT4"磁盘格式的话，则使用如下命令：

# 只读挂载
$ sudo ext4fuse /dev/disk2s2 ~/Desktop/disk2s2

# 读写挂载
$ sudo ext4fuse /dev/disk2s2 ~/Desktop/disk2s2 -o rw

# 只读挂载

$ sudo ext4fuse /dev/disk2s2 ~/Desktop/disk2s2

# 读写挂载

$ sudo ext4fuse /dev/disk2s2 ~/Desktop/disk2s2 -o rw

如果已知是"NTFS"磁盘格式的话，则使用如下命令：

# 先卸载系统的自动挂载
$ sudo diskutil unmount /dev/disk2

# 读写挂载
$ sudo /usr/local/sbin/mount_ntfs /dev/disk2 ~/Desktop/disk2

# 先卸载系统的自动挂载

$ sudo diskutil unmount /dev/disk2

# 读写挂载

$ sudo /usr/local/sbin/mount_ntfs /dev/disk2 ~/Desktop/disk2

参考链接

ubuntu 16.04下载Android源代码

由于众所周知的原因，我们是没办法正常下载Android的源代码的，因此只能使用国内的镜像来操作了。

1.安装repo工具

$ sudo apt-get install repo

1	$ sudo apt-get install repo

2.在需要存储代码的地方创建文件夹

$ mkdir ~/Android_Source

$ cd ~/Android_Source

# 国内手工下载 repo 源代码，解决 “fatal: Cannot get https://gerrit.googlesource.com/git-repo/clone.bundle”
 
$ git clone https://gerrit-googlesource.lug.ustc.edu.cn/git-repo .repo/repo

$ mkdir ~/Android_Source

$ cd ~/Android_Source

# 国内手工下载 repo 源代码，解决 “fatal: Cannot get https://gerrit.googlesource.com/git-repo/clone.bundle”

$ git clone https://gerrit-googlesource.lug.ustc.edu.cn/git-repo .repo/repo

3.使用镜像下载Android源代码
omapzoom.org的镜像

$ repo init -u git://git.omapzoom.org/platform/manifest

1	$ repo init -u git://git.omapzoom.org/platform/manifest

清华大学的镜像

$ repo init -u https://aosp.tuna.tsinghua.edu.cn/platform/manifest

1	$ repo init -u https://aosp.tuna.tsinghua.edu.cn/platform/manifest

上面执行之后是拉取全部的代码。

如果要使用某个特定分支的版本的源代码的话，则则初始化的时候指定分支，比如我想要Android 7.0.0_r21的分支，则执行如下命令

$ repo init -u https://aosp.tuna.tsinghua.edu.cn/platform/manifest -b android-7.0.0_r21

1	$ repo init -u https://aosp.tuna.tsinghua.edu.cn/platform/manifest -b android-7.0.0_r21

4.同步代码

$ repo sync -j4

1	$ repo sync -j4

5.列出全部分支

$ cd .repo/manifests && git branch -a | cut -d / -f 3

1	$ cd .repo/manifests && git branch -a \| cut -d / -f 3

6.切换到指定分支

$ repo start Android_7.0.0_r21 7.0.0_r21 --all

1	$ repo start Android_7.0.0_r21 7.0.0_r21 --all

7.查看当前的分支

$ repo branches

1	$ repo branches

8.删除不用的本地分支

$ repo abandon Android_7.0.0_r21

1	$ repo abandon Android_7.0.0_r21

参考链接

WDMyCloud编译TestDisk&PhotoRec 7.0/7.1

1.按照How to successfully build packages for WD My Cloud from source中的介绍，搭建完成WDMyCloud的编译环境

2.下载TestDisk & PhotoRec 7.1的源代码

$ wget https://www.cgsecurity.org/testdisk-7.1-WIP.tar.bz2

1	$ wget https://www.cgsecurity.org/testdisk-7.1-WIP.tar.bz2

3.解压缩源代码

$ tar -xjf testdisk-7.1-WIP.tar.bz2

1	$ tar -xjf testdisk-7.1-WIP.tar.bz2

4.安装依赖库

$ apt-get install libncurses5-dev

$ apt-get install uuid-dev

$ apt-get install libncurses5-dev

$ apt-get install uuid-dev

5.编译源代码

$ cd ~/wdmc-build/testdisk-7.1-WIP

$ chroot build

$ mount -t proc none /proc
$ mount -t devtmpfs none /dev
$ mount -t devpts none /dev/pts

$ export DEBIAN_FRONTEND=noninteractive
$ export DEBCONF_NONINTERACTIVE_SEEN=true
$ export LC_ALL=C
$ export LANGUAGE=C
$ export LANG=C
$ export DEB_CFLAGS_APPEND='-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE'
$ export DEB_BUILD_OPTIONS=nocheck

$ cd ~/testdisk-7.1-WIP

$ ./configure

$ make

$ cd ~/wdmc-build/testdisk-7.1-WIP

$ chroot build

$ mount -t proc none /proc

$ mount -t devtmpfs none /dev

$ mount -t devpts none /dev/pts

$ export DEBIAN_FRONTEND=noninteractive

$ export DEBCONF_NONINTERACTIVE_SEEN=true

$ export LC_ALL=C

$ export LANGUAGE=C

$ export LANG=C

$ export DEB_CFLAGS_APPEND='-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE'

$ export DEB_BUILD_OPTIONS=nocheck

$ cd ~/testdisk-7.1-WIP

$ ./configure

$ make

编译好的文件在src目录下面。

上面的编译方法编译出来的没办法生成安装包，如果需要安装包的版本，可以直接从Debian源中下载已经适配过的源代码进行编译，目前已经被适配的版本是testdisk_7.0-2。

使用如下方式编译:

$ cd ~/wdmc-build/64k-wheezy

$ chroot build

$ mount -t proc none /proc
$ mount -t devtmpfs none /dev
$ mount -t devpts none /dev/pts

$ export DEBIAN_FRONTEND=noninteractive
$ export DEBCONF_NONINTERACTIVE_SEEN=true
$ export LC_ALL=C
$ export LANGUAGE=C
$ export LANG=C
$ export DEB_CFLAGS_APPEND='-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE'
$ export DEB_BUILD_OPTIONS=nocheck

$ cd root
$ mkdir testdisk_7.0-2
$ cd testdisk_7.0-2

$ apt-get install ca-certificates
$ apt-get install dh-autoreconf

$ wget http://http.debian.net/debian/pool/main/t/testdisk/testdisk_7.0-2.dsc
$ wget http://http.debian.net/debian/pool/main/t/testdisk/testdisk_7.0.orig.tar.bz2
$ wget http://http.debian.net/debian/pool/main/t/testdisk/testdisk_7.0-2.debian.tar.xz

$ tar -jxvf testdisk_7.0.orig.tar.bz2

$ xz -d testdisk_7.0-2.debian.tar.xz

$ tar -xvf testdisk_7.0-2.debian.tar

$ mv debian/ testdisk-7.0/

$ rm -rf testdisk_7.0-2.debian.tar

$ cp testdisk_7.0-2.dsc testdisk-7.0/testdisk_7.0-2.dsc

$ dpkg-buildpackage -d -b -uc

$ cd ~/wdmc-build/64k-wheezy

$ chroot build

$ mount -t proc none /proc

$ mount -t devtmpfs none /dev

$ mount -t devpts none /dev/pts

$ export DEBIAN_FRONTEND=noninteractive

$ export DEBCONF_NONINTERACTIVE_SEEN=true

$ export LC_ALL=C

$ export LANGUAGE=C

$ export LANG=C

$ export DEB_CFLAGS_APPEND='-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE'

$ export DEB_BUILD_OPTIONS=nocheck

$ cd root

$ mkdir testdisk_7.0-2

$ cd testdisk_7.0-2

$ apt-get install ca-certificates

$ apt-get install dh-autoreconf

$ wget http://http.debian.net/debian/pool/main/t/testdisk/testdisk_7.0-2.dsc

$ wget http://http.debian.net/debian/pool/main/t/testdisk/testdisk_7.0.orig.tar.bz2

$ wget http://http.debian.net/debian/pool/main/t/testdisk/testdisk_7.0-2.debian.tar.xz

$ tar -jxvf testdisk_7.0.orig.tar.bz2

$ xz -d testdisk_7.0-2.debian.tar.xz

$ tar -xvf testdisk_7.0-2.debian.tar

$ mv debian/ testdisk-7.0/

$ rm -rf testdisk_7.0-2.debian.tar

$ cp testdisk_7.0-2.dsc testdisk-7.0/testdisk_7.0-2.dsc

$ dpkg-buildpackage -d -b -uc

参考链接

源码包: testdisk (7.0-2)

升级Struts2之后报告HTTP Status 500 - java.lang.ClassNotFoundException: org.apache.jsp.index_jsp以及org.apache.jasper.JasperException: Unable to compile class for JSP

升级Struts2从2.3.20.1版本升级到2.5.5版本后可能报告如下错误：

HTTP Status 500 - Unable to compile class for JSP:

type Exception report

message Unable to compile class for JSP:

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: Unable to compile class for JSP:

An error occurred at line: [38] in the generated java file: [/var/lib/tomcat7/work/Catalina/localhost/Tools/org/apache/jsp/index_jsp.java]
The method getJspApplicationContext(ServletContext) is undefined for the type JspFactory

Stacktrace:
	org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
	org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:366)
	org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:468)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:378)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:657)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:110)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.52 (Ubuntu) logs.

HTTP Status 500 - Unable to compile class for JSP:

type Exception report

message Unable to compile class for JSP:

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: Unable to compile class for JSP:

An error occurred at line: [38] in the generated java file: [/var/lib/tomcat7/work/Catalina/localhost/Tools/org/apache/jsp/index_jsp.java]

The method getJspApplicationContext(ServletContext) is undefined for the type JspFactory

Stacktrace:

org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)

org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:366)

org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:468)

org.apache.jasper.compiler.Compiler.compile(Compiler.java:378)

org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)

org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)

org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:657)

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)

org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)

org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)

javax.servlet.http.HttpServlet.service(HttpServlet.java:727)

org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:110)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.52 (Ubuntu) logs.

也有可能发生如下错误信息：

HTTP Status 500 - java.lang.ClassNotFoundException: org.apache.jsp.index_jsp

1	HTTP Status 500 - java.lang.ClassNotFoundException: org.apache.jsp.index_jsp

具体信息如下图：

1422265899_66497

比较诡异的是，在Tomcat 8的环境下，是可以正常运行的，但是在Tomcat 7环境下却会报错。造成这个现象的原因就是在引入的Jar包中包含了jsp-api.jar这个Jar包，只要在最后生成的war包中排除这个文件即可。

Struts2从2.3.20.1升级到2.5.5版本后报错：ClassNotFoundException: org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

以前项目一直使用Struts2从2.3.20.1版本，这个版本是IntelliJ Idea新建项目的时候默认指定的版本，但是这个版本存在漏洞，必须进行升级，干脆一不做二不休，直接升级到最新的2.5.5版本，但是运行的时候报告如下错误信息：

严重: Exception starting filter struts2
java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735)
	at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:504)
	at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:486)
	at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:113)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4958)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5652)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
	at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1863)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
	at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:618)
	at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:565)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
	at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1487)
	at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:97)
	at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1328)
	at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1420)
	at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:848)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)
	at sun.rmi.transport.Transport$2.run(Transport.java:202)
	at sun.rmi.transport.Transport$2.run(Transport.java:199)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Transport.java:198)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:567)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.access$400(TCPTransport.java:619)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:684)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:681)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:681)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)

严重: Exception starting filter struts2

java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892)

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735)

at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:504)

at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:486)

at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:113)

at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)

at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)

at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4958)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5652)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)

at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1863)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)

at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)

at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)

at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:618)

at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:565)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)

at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)

at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)

at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1487)

at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:97)

at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1328)

at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1420)

at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:848)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)

at sun.rmi.transport.Transport$2.run(Transport.java:202)

at sun.rmi.transport.Transport$2.run(Transport.java:199)

at java.security.AccessController.doPrivileged(Native Method)

at sun.rmi.transport.Transport.serviceCall(Transport.java:198)

at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:567)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.access$400(TCPTransport.java:619)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:684)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:681)

at java.security.AccessController.doPrivileged(Native Method)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:681)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at java.lang.Thread.run(Thread.java:745)

分析Struts2-2.5.5的源代码发现

org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

1	org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

被更改了目录，变成了

org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter

1	org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter

只要如此修改即可。

Ubuntu 16.04下创建IntelliJ IDEA图标快捷方式

一般在安装目录下面或者桌面上创建文件，命名为：idea.desktop
使用vim编辑该文件

$ vim idea.desktop

1	$ vim idea.desktop

内容如下：

[Desktop Entry]
Name=IntelliJ IDEA
Comment=IntelliJ IDEA
Exec=/home/longsky/Application/idea-IU-163.7743.44/bin/idea.sh
Icon=/home/longsky/Application/idea-IU-163.7743.44/bin/idea.png
Terminal=false
Type=Application
Categories=Developer;

[Desktop Entry]

Name=IntelliJ IDEA

Comment=IntelliJ IDEA

Exec=/home/longsky/Application/idea-IU-163.7743.44/bin/idea.sh

Icon=/home/longsky/Application/idea-IU-163.7743.44/bin/idea.png

Terminal=false

Type=Application

Categories=Developer;

接着给予这个文件执行权限

$ chmod +x idea.desktop

1	$ chmod +x idea.desktop

以后双击这个图标，就可以直接启动IntelliJ IDEA了。

国内如何访问维基百科(Wikipedia)

目前，维基百科已经被墙了，但是上面毕竟有很多有用的东西。目前找到比较好用的办法，就是下载zim格式的维基百科的离线文件。

首先访问开源免费软件Kiwix所在的网页，地址为: http://wiki.kiwix.org/wiki/Main_Page/zh-cn 在这个网址中下载阅读软件，也可以在本站下载Kiwix-Windows, Kiwix-Mac

其次，下载维基百科对应语言的快照，zim格式的文件，目前中文语言文件的大小是10GB左右的样子。可以直接在 http://wiki.kiwix.org/wiki/Main_Page/zh-cn 这个网站中下载，也可以访问 https://dumps.wikimedia.org/ 在这网页中选择"Kiwix files"这部分的内容去下载。注意里面包含了几乎所有的语言，只需要选择对应的语言即可。

参考链接

解决Apache Archiva下载文件超时的问题

注意： Apache Archiva 2024-02 开始已经停止维护建议使用 JFrog Artifactory 替代。

最近使用自己搭建的Apache Archiva来代理Maven仓库，经常发生失败的情况，观察Archiva的日志(logs/archiva.log)，看到如下的内容：

2016-11-22 19:52:02,773 [ajp-bio-127.0.0.1-8009-exec-74] WARN  org.apache.archiva.proxy.DefaultRepositoryProxyConnectors [] - Transfer error from repository central for artifact org.mockito:mockito-core:2.2.22::jar , continuing to next repository. Error message: Download failure on resource [https://repo.maven.apache.org/maven2/org/mockito/mockito-core/2.2.22/mockito-core-2.2.22.jar]:GET request of: org/mockito/mockito-core/2.2.22/mockito-core-2.2.22.jar from central failed (cause: java.net.SocketTimeoutException: Read timed out)
2016-11-22 19:52:02,773 [ajp-bio-127.0.0.1-8009-exec-74] ERROR org.apache.archiva.webdav.ArchivaDavResourceFactory [] - Failures occurred downloading from some remote repositories:
        central: Download failure on resource [https://repo.maven.apache.org/maven2/org/mockito/mockito-core/2.2.22/mockito-core-2.2.22.jar]:GET request of: org/mockito/mockito-core/2.2.22/mockito-core-2.2.22.jar from central failed (cause: java.net.SocketTimeoutException: Read timed out)
org.apache.archiva.policies.ProxyDownloadException: Failures occurred downloading from some remote repositories:
        central: Download failure on resource [https://repo.maven.apache.org/maven2/org/mockito/mockito-core/2.2.22/mockito-core-2.2.22.jar]:GET request of: org/mockito/mockito-core/2.2.22/mockito-core-2.2.22.jar from central failed (cause: java.net.SocketTimeoutException: Read timed out)
        at org.apache.archiva.proxy.DefaultRepositoryProxyConnectors.fetchFromProxies(DefaultRepositoryProxyConnectors.java:366) ~[archiva-proxy-2.2.1.jar:?]
        at org.apache.archiva.webdav.ArchivaDavResourceFactory.fetchContentFromProxies(ArchivaDavResourceFactory.java:820) [archiva-webdav-2.2.1.jar:?]
        at org.apache.archiva.webdav.ArchivaDavResourceFactory.processRepository(ArchivaDavResourceFactory.java:629) [archiva-webdav-2.2.1.jar:?]
        at org.apache.archiva.webdav.ArchivaDavResourceFactory.createResource(ArchivaDavResourceFactory.java:325) [archiva-webdav-2.2.1.jar:?]
        at org.apache.archiva.webdav.RepositoryServlet.service(RepositoryServlet.java:126) [archiva-webdav-2.2.1.jar:?]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) [servlet-api-3.0.jar:?]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) [tomcat-catalina-7.0.52.jar:7.0.52]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [tomcat-catalina-7.0.52.jar:7.0.52]
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) [tomcat-catalina-7.0.52.jar:7.0.52]
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) [tomcat-catalina-7.0.52.jar:7.0.52]
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) [tomcat-catalina-7.0.52.jar:7.0.52]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) [tomcat-catalina-7.0.52.jar:7.0.52]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) [tomcat-catalina-7.0.52.jar:7.0.52]
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) [tomcat-catalina-7.0.52.jar:7.0.52]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) [tomcat-catalina-7.0.52.jar:7.0.52]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) [tomcat-catalina-7.0.52.jar:7.0.52]
        at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:193) [tomcat-coyote-7.0.52.jar:7.0.52]
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) [tomcat-coyote-7.0.52.jar:7.0.52]
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313) [tomcat-coyote-7.0.52.jar:7.0.52]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [?:1.7.0_111]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [?:1.7.0_111]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_111]

2016-11-22 19:52:02,773 [ajp-bio-127.0.0.1-8009-exec-74] WARN org.apache.archiva.proxy.DefaultRepositoryProxyConnectors [] - Transfer error from repository central for artifact org.mockito:mockito-core:2.2.22::jar , continuing to next repository. Error message: Download failure on resource [https://repo.maven.apache.org/maven2/org/mockito/mockito-core/2.2.22/mockito-core-2.2.22.jar]:GET request of: org/mockito/mockito-core/2.2.22/mockito-core-2.2.22.jar from central failed (cause: java.net.SocketTimeoutException: Read timed out)

2016-11-22 19:52:02,773 [ajp-bio-127.0.0.1-8009-exec-74] ERROR org.apache.archiva.webdav.ArchivaDavResourceFactory [] - Failures occurred downloading from some remote repositories:

central: Download failure on resource [https://repo.maven.apache.org/maven2/org/mockito/mockito-core/2.2.22/mockito-core-2.2.22.jar]:GET request of: org/mockito/mockito-core/2.2.22/mockito-core-2.2.22.jar from central failed (cause: java.net.SocketTimeoutException: Read timed out)

org.apache.archiva.policies.ProxyDownloadException: Failures occurred downloading from some remote repositories:

at org.apache.archiva.proxy.DefaultRepositoryProxyConnectors.fetchFromProxies(DefaultRepositoryProxyConnectors.java:366) ~[archiva-proxy-2.2.1.jar:?]

at org.apache.archiva.webdav.ArchivaDavResourceFactory.fetchContentFromProxies(ArchivaDavResourceFactory.java:820) [archiva-webdav-2.2.1.jar:?]

at org.apache.archiva.webdav.ArchivaDavResourceFactory.processRepository(ArchivaDavResourceFactory.java:629) [archiva-webdav-2.2.1.jar:?]

at org.apache.archiva.webdav.ArchivaDavResourceFactory.createResource(ArchivaDavResourceFactory.java:325) [archiva-webdav-2.2.1.jar:?]

at org.apache.archiva.webdav.RepositoryServlet.service(RepositoryServlet.java:126) [archiva-webdav-2.2.1.jar:?]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) [servlet-api-3.0.jar:?]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) [tomcat-catalina-7.0.52.jar:7.0.52]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [tomcat-catalina-7.0.52.jar:7.0.52]

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) [tomcat-catalina-7.0.52.jar:7.0.52]

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) [tomcat-catalina-7.0.52.jar:7.0.52]

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) [tomcat-catalina-7.0.52.jar:7.0.52]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) [tomcat-catalina-7.0.52.jar:7.0.52]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) [tomcat-catalina-7.0.52.jar:7.0.52]

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) [tomcat-catalina-7.0.52.jar:7.0.52]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) [tomcat-catalina-7.0.52.jar:7.0.52]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) [tomcat-catalina-7.0.52.jar:7.0.52]

at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:193) [tomcat-coyote-7.0.52.jar:7.0.52]

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) [tomcat-coyote-7.0.52.jar:7.0.52]

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313) [tomcat-coyote-7.0.52.jar:7.0.52]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [?:1.7.0_111]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [?:1.7.0_111]

at java.lang.Thread.run(Thread.java:745) [?:1.7.0_111]

明显是从https://repo.maven.apache.org/maven2这个地址下载数据的时候发生了异常。这个仓库的地址是Apache Archiva中的默认仓库地址。从目前的测试来看，这个地址在国内访问，经常出现问题。对于国内用户来说https://repo1.maven.org/maven2这个中央仓库的地址是相对来说更加稳定。因此只要在Remote Repositories中增加这个中央仓库地址即可。
如下图操作：

repositorylist

add_repository

另外，在添加完成后，顺便在属性中修改一下Download Timeout，从默认的60秒修改到600秒，减少超时的发生即可。

如上操作只能部分解决问题，在现实过程中，依旧会发生失败，失败主要集中在下载https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.gz这个索引文件的时候，这个索引文件有300-400MB的样子，一次完整的下载基本上是都会失败，要命的是Apache Archiva在处理这个文件的时候，基本上没有进行任何容错处理。这个时候我们要么修改源代码来修正，要么需要辅助Apache Archiva完成这个文件的下载。

下面，我们实验通过Linux定时任务，nginx，aria2来实现对Apache Archiva下载的辅助处理。

1.首先安装必须的软件

$ sudo apt-get install nginx

$ sudo apt-get install aria2

$ sudo apt-get install nginx

$ sudo apt-get install aria2

2.接下来，配置nginx

$ sudo vim /etc/nginx/sites-enabled/default

1	$ sudo vim /etc/nginx/sites-enabled/default

整个配置文件的原文如下：

##
# You should look at the following URL's in order to grasp a solid understanding
# of Nginx configuration files in order to fully unleash the power of Nginx.
# http://wiki.nginx.org/Pitfalls
# http://wiki.nginx.org/QuickStart
# http://wiki.nginx.org/Configuration
#
# Generally, you will want to move this file somewhere, and start with a clean
# file but keep this around for reference. Or just disable in sites-enabled.
#
# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
##

# Default server configuration
#
server {
	listen 80 default_server;
	listen [::]:80 default_server;

	# SSL configuration
	#
	# listen 443 ssl default_server;
	# listen [::]:443 ssl default_server;
	#
	# Note: You should disable gzip for SSL traffic.
	# See: https://bugs.debian.org/773332
	#
	# Read up on ssl_ciphers to ensure a secure configuration.
	# See: https://bugs.debian.org/765782
	#
	# Self signed certs generated by the ssl-cert package
	# Don't use them in a production server!
	#
	# include snippets/snakeoil.conf;

	root /var/www/html;

	# Add index.php to the list if you are using PHP
	index index.html index.htm index.nginx-debian.html;

	server_name _;

	location / {
		# First attempt to serve request as file, then
		# as directory, then fall back to displaying a 404.
		try_files $uri $uri/ =404;
	}

	# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
	#
	#location ~ \.php$ {
	#	include snippets/fastcgi-php.conf;
	#
	#	# With php7.0-cgi alone:
	#	fastcgi_pass 127.0.0.1:9000;
	#	# With php7.0-fpm:
	#	fastcgi_pass unix:/run/php/php7.0-fpm.sock;
	#}

	# deny access to .htaccess files, if Apache's document root
	# concurs with nginx's one
	#
	#location ~ /\.ht {
	#	deny all;
	#}
}


# Virtual Host configuration for example.com
#
# You can move that to a different file under sites-available/ and symlink that
# to sites-enabled/ to enable it.
#
#server {
#	listen 80;
#	listen [::]:80;
#
#	server_name example.com;
#
#	root /var/www/example.com;
#	index index.html;
#
#	location / {
#		try_files $uri $uri/ =404;
#	}
#}

# You should look at the following URL's in order to grasp a solid understanding

# of Nginx configuration files in order to fully unleash the power of Nginx.

# http://wiki.nginx.org/Pitfalls

# http://wiki.nginx.org/QuickStart

# http://wiki.nginx.org/Configuration

# Generally, you will want to move this file somewhere, and start with a clean

# file but keep this around for reference. Or just disable in sites-enabled.

# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.

# Default server configuration

server {

listen 80 default_server;

listen [::]:80 default_server;

# SSL configuration

# listen 443 ssl default_server;

# listen [::]:443 ssl default_server;

# Note: You should disable gzip for SSL traffic.

# See: https://bugs.debian.org/773332

# Read up on ssl_ciphers to ensure a secure configuration.

# See: https://bugs.debian.org/765782

# Self signed certs generated by the ssl-cert package

# Don't use them in a production server!

# include snippets/snakeoil.conf;

root /var/www/html;

# Add index.php to the list if you are using PHP

index index.html index.htm index.nginx-debian.html;

server_name _;

location / {

# First attempt to serve request as file, then

# as directory, then fall back to displaying a 404.

try_files $uri $uri/ =404;

}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000

#location ~ \.php$ {

# include snippets/fastcgi-php.conf;

# # With php7.0-cgi alone:

# fastcgi_pass 127.0.0.1:9000;

# # With php7.0-fpm:

# fastcgi_pass unix:/run/php/php7.0-fpm.sock;

# deny access to .htaccess files, if Apache's document root

# concurs with nginx's one

#location ~ /\.ht {

# deny all;

}

# Virtual Host configuration for example.com

# You can move that to a different file under sites-available/ and symlink that

# to sites-enabled/ to enable it.

#server {

# listen 80;

# listen [::]:80;

# server_name example.com;

# root /var/www/example.com;

# index index.html;

# location / {

# try_files $uri $uri/ =404;

# }

修改后的结果如下：

##
# You should look at the following URL's in order to grasp a solid understanding
# of Nginx configuration files in order to fully unleash the power of Nginx.
# http://wiki.nginx.org/Pitfalls
# http://wiki.nginx.org/QuickStart
# http://wiki.nginx.org/Configuration
#
# Generally, you will want to move this file somewhere, and start with a clean
# file but keep this around for reference. Or just disable in sites-enabled.
#
# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
##

# Default server configuration
#
server {
	#listen 80 default_server;
	#listen [::]:80 default_server;
	listen 127.0.0.1:8090 default_server;
	# SSL configuration
	#
	# listen 443 ssl default_server;
	# listen [::]:443 ssl default_server;
	#
	# Note: You should disable gzip for SSL traffic.
	# See: https://bugs.debian.org/773332
	#
	# Read up on ssl_ciphers to ensure a secure configuration.
	# See: https://bugs.debian.org/765782
	#
	# Self signed certs generated by the ssl-cert package
	# Don't use them in a production server!
	#
	# include snippets/snakeoil.conf;

	root /data/nginx/maven_index;

	# Add index.php to the list if you are using PHP
	index index.html index.htm index.nginx-debian.html;

	server_name _;

	location / {
		# First attempt to serve request as file, then
		# as directory, then fall back to displaying a 404.
		try_files $uri $uri/ =404;
		resolver 114.114.114.114 218.85.152.99;
		resolver_timeout 30s;
		
		#nginx 不支持if嵌套也不支持多条件判断，因此只能用下面的方式来模拟
		#留意判断语句与括号之间的空格，缺失空格会导致语法错误		
		#if ( ( $host ~* "repo1\.maven\.org" ) && ( $request_uri ~* "maven2/\.index" ) ) {
		set $flag 0;
		if ( $host ~* "repo1\.maven\.org" ) {
			set $flag "${flag}1";
		}
		if ( $request_uri ~* "maven2/\.index" ) {
			set $flag "${flag}2";
		}
		if ($flag = "012") {
			proxy_pass http://127.0.0.1:8090$request_uri;
		}
		#避免循环重定向问题
 		if ( $host != "127.0.0.1" ) {
			proxy_pass http://$host$request_uri;
		}		
	}

	# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
	#
	#location ~ \.php$ {
	#	include snippets/fastcgi-php.conf;
	#
	#	# With php7.0-cgi alone:
	#	fastcgi_pass 127.0.0.1:9000;
	#	# With php7.0-fpm:
	#	fastcgi_pass unix:/run/php/php7.0-fpm.sock;
	#}

	# deny access to .htaccess files, if Apache's document root
	# concurs with nginx's one
	#
	#location ~ /\.ht {
	#	deny all;
	#}
}


# Virtual Host configuration for example.com
#
# You can move that to a different file under sites-available/ and symlink that
# to sites-enabled/ to enable it.
#
#server {
#	listen 80;
#	listen [::]:80;
#
#	server_name example.com;
#
#	root /var/www/example.com;
#	index index.html;
#
#	location / {
#		try_files $uri $uri/ =404;
#	}
#}

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# You should look at the following URL's in order to grasp a solid understanding

# of Nginx configuration files in order to fully unleash the power of Nginx.

# http://wiki.nginx.org/Pitfalls

# http://wiki.nginx.org/QuickStart

# http://wiki.nginx.org/Configuration

# Generally, you will want to move this file somewhere, and start with a clean

# file but keep this around for reference. Or just disable in sites-enabled.

# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.

# Default server configuration

server {

#listen 80 default_server;

#listen [::]:80 default_server;

listen 127.0.0.1:8090 default_server;

# SSL configuration

# listen 443 ssl default_server;

# listen [::]:443 ssl default_server;

# Note: You should disable gzip for SSL traffic.

# See: https://bugs.debian.org/773332

# Read up on ssl_ciphers to ensure a secure configuration.

# See: https://bugs.debian.org/765782

# Self signed certs generated by the ssl-cert package

# Don't use them in a production server!

# include snippets/snakeoil.conf;

root /data/nginx/maven_index;

# Add index.php to the list if you are using PHP

index index.html index.htm index.nginx-debian.html;

server_name _;

location / {

# First attempt to serve request as file, then

# as directory, then fall back to displaying a 404.

try_files $uri $uri/ =404;

resolver 114.114.114.114 218.85.152.99;

resolver_timeout 30s;

#nginx 不支持if嵌套也不支持多条件判断，因此只能用下面的方式来模拟

#留意判断语句与括号之间的空格，缺失空格会导致语法错误

#if ( ( $host ~* "repo1\.maven\.org" ) && ( $request_uri ~* "maven2/\.index" ) ) {

set $flag 0;

if ( $host ~* "repo1\.maven\.org" ) {

set $flag "${flag}1";

}

if ( $request_uri ~* "maven2/\.index" ) {

set $flag "${flag}2";

}

if ($flag = "012") {

proxy_pass http://127.0.0.1:8090$request_uri;

}

#避免循环重定向问题

if ( $host != "127.0.0.1" ) {

proxy_pass http://$host$request_uri;

}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000

#location ~ \.php$ {

# include snippets/fastcgi-php.conf;

# # With php7.0-cgi alone:

# fastcgi_pass 127.0.0.1:9000;

# # With php7.0-fpm:

# fastcgi_pass unix:/run/php/php7.0-fpm.sock;

# deny access to .htaccess files, if Apache's document root

# concurs with nginx's one

#location ~ /\.ht {

# deny all;

}

# Virtual Host configuration for example.com

# You can move that to a different file under sites-available/ and symlink that

# to sites-enabled/ to enable it.

#server {

# listen 80;

# listen [::]:80;

# server_name example.com;

# root /var/www/example.com;

# index index.html;

# location / {

# try_files $uri $uri/ =404;

# }

接下来，重启nginx服务。

3.设置定时任务，定时检查远端服务器上的数据是否有更新

任务脚本内容如下：

nginx_dir="/data/nginx"
mvn_idx_dir="$nginx_dir/maven2/.index"
mvn_idx_dl_dir="$nginx_dir/maven2/.CacheIndex"
mvn_idx_name="nexus-maven-repository-index"
mvn_idx_path_name="$mvn_idx_dir/$mvn_idx_name"
mvn_idx_gz_name="$mvn_idx_dir/$mvn_idx_name.gz"
mvn_idx_prop_name="$mvn_idx_dir/$mvn_idx_name.properties"
mvn_idx_dl_gz_name="$mvn_idx_dl_dir/$mvn_idx_name.gz"
mvn_idx_dl_prop_name="$mvn_idx_dl_dir/$mvn_idx_name.properties"
log_file="/data/nginx/maven_index_log.txt"
dt_fmt="`date "+%Y-%m-%d %H:%M:%S"`"



if [ ! -d $mvn_idx_dl_dir ]; then
	mkdir -p $mvn_idx_dl_dir
fi

if [ ! -d $mvn_idx_dir ]; then
	mkdir -p $mvn_idx_dir
fi

if [ ! -d $mvn_idx_dl_dir ]; then
	echo "$dt_fmt	mkdir $mvn_idx_dl_dir failed !" >> $log_file
	exit -1 
fi

if [ ! -d $mvn_idx_dir ]; then
	echo "$dt_fmt	mkdir $mvn_idx_dir failed !" >> $log_file
	exit -1 
fi

cd $mvn_idx_dl_dir

dl_idx="true"
dl_prop="true"

#echo mvn_idx_gz_name="$mvn_idx_gz_name"
#先检查是不是需要下载文件，然后再下载文件，减少不必要的网络请求数据
if [ -f "$mvn_idx_gz_name" ]; then
	remote_idx_md5=$(curl -s https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.gz.md5)
	 
	if [ "${#remote_idx_md5}" != "32" ] ; then
		echo "$dt_fmt	download $mvn_idx_gz_name.md5 failed !" >> $log_file
		exit -1
	fi
	local_idx_md5=$(md5sum $mvn_idx_gz_name | cut -b 1-32)
	
	#echo remote_idx_md5="$remote_idx_md5" local_idx_md5="$local_idx_md5"
	if [ "$remote_idx_md5" = "$local_idx_md5" ] ; then
		dl_idx="false"
		if [ -f "$mvn_idx_prop_name" ]; then
			remote_prop_md5=$(curl -s https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.properties.md5)
			if [ "${#remote_prop_md5}" != "32" ] ; then
				echo "$dt_fmt	download $mvn_idx_prop_name failed !" >> $log_file
				exit -1
			fi
			local_prop_md5=$(md5sum $mvn_idx_prop_name | cut -b 1-32)
			if [ "$remote_prop_md5" = "$local_prop_md5" ] ; then
				dl_prop="false"
				echo "$dt_fmt	check file success ,no need to update !" >> $log_file
				exit 0
			fi
		fi
	fi
fi

if [ "$dl_idx" = "true" ] ; then
	aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.gz
	aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.gz.md5
	aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.gz.sha1
fi

if [ "$dl_prop" = "true" ] ; then
	aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.properties
	aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.properties.md5
	aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.properties.sha1
fi

#校验下载到的文件
if [ "$dl_idx" = "true" ] ; then
	dl_idx_md5=$(md5sum $mvn_idx_dl_gz_name | cut -b 1-32)
	dl_idx_f_md5=$(cat $mvn_idx_dl_gz_name.md5)
	if [ "$dl_idx_md5" = "$dl_idx_f_md5" ] ; then
		rm -rf $mvn_idx_gz_name
		mv $mvn_idx_dl_gz_name $mvn_idx_gz_name
		rm -rf $mvn_idx_gz_name.md5 
		mv $mvn_idx_dl_gz_name.md5 $mvn_idx_gz_name.md5
		rm -rf $mvn_idx_gz_name.sha1
		mv $mvn_idx_dl_gz_name.sha1 $mvn_idx_gz_name.sha1
	else
		echo "$dt_fmt	check downloaded index file failed !" >> $log_file
		cd  $nginx_dir
		rm -rf $mvn_idx_dl_dir
	fi
fi

if [ "$dl_prop" = "true" ] ; then
	dl_prop_md5=$(md5sum $mvn_idx_dl_prop_name | cut -b 1-32)
	dl_prop_f_md5=$(cat $mvn_idx_dl_prop_name.md5)
	if [ "$dl_prop_md5" = "$dl_prop_f_md5" ] ; then
		rm -rf $mvn_idx_prop_name
		mv $mvn_idx_dl_prop_name $mvn_idx_prop_name
		rm -rf $mvn_idx_prop_name.md5 
		mv $mvn_idx_dl_prop_name.md5 $mvn_idx_prop_name.md5
		rm -rf $mvn_idx_prop_name.sha1
		mv $mvn_idx_dl_prop_name.sha1 $mvn_idx_prop_name.sha1
	else
		echo "$dt_fmt	check downloaded properties file failed !" >> $log_file
		cd  $nginx_dir
		rm -rf $mvn_idx_dl_dir
	fi
fi

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nginx_dir="/data/nginx"

mvn_idx_dir="$nginx_dir/maven2/.index"

mvn_idx_dl_dir="$nginx_dir/maven2/.CacheIndex"

mvn_idx_name="nexus-maven-repository-index"

mvn_idx_path_name="$mvn_idx_dir/$mvn_idx_name"

mvn_idx_gz_name="$mvn_idx_dir/$mvn_idx_name.gz"

mvn_idx_prop_name="$mvn_idx_dir/$mvn_idx_name.properties"

mvn_idx_dl_gz_name="$mvn_idx_dl_dir/$mvn_idx_name.gz"

mvn_idx_dl_prop_name="$mvn_idx_dl_dir/$mvn_idx_name.properties"

log_file="/data/nginx/maven_index_log.txt"

dt_fmt="`date "+%Y-%m-%d %H:%M:%S"`"

if [ ! -d $mvn_idx_dl_dir ]; then

mkdir -p $mvn_idx_dl_dir

if [ ! -d $mvn_idx_dir ]; then

mkdir -p $mvn_idx_dir

if [ ! -d $mvn_idx_dl_dir ]; then

echo "$dt_fmt mkdir $mvn_idx_dl_dir failed !" >> $log_file

exit -1

if [ ! -d $mvn_idx_dir ]; then

echo "$dt_fmt mkdir $mvn_idx_dir failed !" >> $log_file

exit -1

cd $mvn_idx_dl_dir

dl_idx="true"

dl_prop="true"

#echo mvn_idx_gz_name="$mvn_idx_gz_name"

#先检查是不是需要下载文件，然后再下载文件，减少不必要的网络请求数据

if [ -f "$mvn_idx_gz_name" ]; then

remote_idx_md5=$(curl -s https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.gz.md5)

if [ "${#remote_idx_md5}" != "32" ] ; then

echo "$dt_fmt download $mvn_idx_gz_name.md5 failed !" >> $log_file

exit -1

local_idx_md5=$(md5sum $mvn_idx_gz_name | cut -b 1-32)

#echo remote_idx_md5="$remote_idx_md5" local_idx_md5="$local_idx_md5"

if [ "$remote_idx_md5" = "$local_idx_md5" ] ; then

dl_idx="false"

if [ -f "$mvn_idx_prop_name" ]; then

remote_prop_md5=$(curl -s https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.properties.md5)

if [ "${#remote_prop_md5}" != "32" ] ; then

echo "$dt_fmt download $mvn_idx_prop_name failed !" >> $log_file

exit -1

local_prop_md5=$(md5sum $mvn_idx_prop_name | cut -b 1-32)

if [ "$remote_prop_md5" = "$local_prop_md5" ] ; then

dl_prop="false"

echo "$dt_fmt check file success ,no need to update !" >> $log_file

exit 0

if [ "$dl_idx" = "true" ] ; then

aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.gz

aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.gz.md5

aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.gz.sha1

if [ "$dl_prop" = "true" ] ; then

aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.properties

aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.properties.md5

aria2c -c https://repo1.maven.org/maven2/.index/nexus-maven-repository-index.properties.sha1

#校验下载到的文件

if [ "$dl_idx" = "true" ] ; then

dl_idx_md5=$(md5sum $mvn_idx_dl_gz_name | cut -b 1-32)

dl_idx_f_md5=$(cat $mvn_idx_dl_gz_name.md5)

if [ "$dl_idx_md5" = "$dl_idx_f_md5" ] ; then

rm -rf $mvn_idx_gz_name

mv $mvn_idx_dl_gz_name $mvn_idx_gz_name

rm -rf $mvn_idx_gz_name.md5

mv $mvn_idx_dl_gz_name.md5 $mvn_idx_gz_name.md5

rm -rf $mvn_idx_gz_name.sha1

mv $mvn_idx_dl_gz_name.sha1 $mvn_idx_gz_name.sha1

else

echo "$dt_fmt check downloaded index file failed !" >> $log_file

cd $nginx_dir

rm -rf $mvn_idx_dl_dir

if [ "$dl_prop" = "true" ] ; then

dl_prop_md5=$(md5sum $mvn_idx_dl_prop_name | cut -b 1-32)

dl_prop_f_md5=$(cat $mvn_idx_dl_prop_name.md5)

if [ "$dl_prop_md5" = "$dl_prop_f_md5" ] ; then

rm -rf $mvn_idx_prop_name

mv $mvn_idx_dl_prop_name $mvn_idx_prop_name

rm -rf $mvn_idx_prop_name.md5

mv $mvn_idx_dl_prop_name.md5 $mvn_idx_prop_name.md5

rm -rf $mvn_idx_prop_name.sha1

mv $mvn_idx_dl_prop_name.sha1 $mvn_idx_prop_name.sha1

else

echo "$dt_fmt check downloaded properties file failed !" >> $log_file

cd $nginx_dir

rm -rf $mvn_idx_dl_dir

默认我们把脚本执行路径为/data/nginx/mvn_index_corn.sh。

设置定时任务的脚本如下：

chmod +x /data/nginx/mvn_index_corn.sh
#write out current crontab
crontab -l > addcron
#echo new cron into cron file ,每隔30分钟我们调度一次任务,前面是文件锁，防止并发冲突
echo "30 * * * * flock -x -w 10 /dev/shm/mvn_index_corn.lock -c \"sh /data/nginx/mvn_index_corn.sh\"" >> addcron
#install new cron file
crontab addcron
rm addcron

chmod +x /data/nginx/mvn_index_corn.sh

#write out current crontab

crontab -l > addcron

#echo new cron into cron file ,每隔30分钟我们调度一次任务,前面是文件锁，防止并发冲突

echo "30 * * * * flock -x -w 10 /dev/shm/mvn_index_corn.lock -c \"sh /data/nginx/mvn_index_corn.sh\"" >> addcron

#install new cron file

crontab addcron

rm addcron

执行上面的脚本。

4.设置Apache Archiva的代理服务器配置

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参考链接

参考链接

1.安装HomeBrew

2.安装osxfuse/ext4fuse/ntfs-3g

3.挂载磁盘设备

参考链接

参考链接

参考链接

参考链接

1.安装`HomeBrew`

2.安装`osxfuse`/`ext4fuse`/`ntfs-3g`