深海游弋的鱼 – 第 8 页

Centos 7配置Jenkins构建Android持续集成(离线内网环境)

安装配置Jenkins

# 要求Java 1.8
$ yum install java

$ yum install subversion

$ yum install tomcat

$ /bin/systemctl restart tomcat.service

$ wget https://get.jenkins.io/war/2.254/jenkins.war

$ cp jenkins.war /usr/share/tomcat/webapps/

$ /bin/systemctl restart tomcat.service

# 服务器访问地址
# http://158.220.155.188:8080/jenkins/

# apache
$ yum install httpd

$ /bin/systemctl restart httpd.service

# apache 默认工作目录 /var/www/html/

# 要求Java 1.8

$ yum install java

$ yum install subversion

$ yum install tomcat

$ /bin/systemctl restart tomcat.service

$ wget https://get.jenkins.io/war/2.254/jenkins.war

$ cp jenkins.war /usr/share/tomcat/webapps/

$ /bin/systemctl restart tomcat.service

# 服务器访问地址

# http://158.220.155.188:8080/jenkins/

# apache

$ yum install httpd

$ /bin/systemctl restart httpd.service

# apache 默认工作目录 /var/www/html/

为了安全考虑，首先需要解锁Jenkins

继续阅读Centos 7配置Jenkins构建Android持续集成(离线内网环境)

Gradle传递System Property

最近在搭建Jenkins环境，实现Android自动化编译的过程中，由于内网服务器不能访问外网，因此只能配置Robolectric访问内网的服务器。

根据官方文档 Configuring Robolectric，发现如果要更改Robolectric默认的下载服务器链接地址，需要在项目的每个lib库中都配置如下参数，才能实现：

android {
  testOptions {
    unitTests.all {
      systemProperty 'robolectric.dependency.repo.url', 'https://local-mirror/repo'
      systemProperty 'robolectric.dependency.repo.id', 'local'
    }
  }
}

android {

testOptions {

unitTests.all {

systemProperty 'robolectric.dependency.repo.url', 'https://local-mirror/repo'

systemProperty 'robolectric.dependency.repo.id', 'local'

}

但是这样配置有一个问题，就是没办法动态调整链接地址。

而我们使用

$ bash gradlew clean build -Drobolectric.dependency.repo.url=http://127.0.0.1/jcenter

1	$ bash gradlew clean build -Drobolectric.dependency.repo.url=http://127.0.0.1/jcenter

手工指定的参数，并没有在编译的时候生效。

参数丢失的原因是因为测试用例在新的JVM中执行，传入的参数不会自动带给新创建的JVM。

这时需要在Gradle脚本中将读到的值重新设到系统属性里面，才可以被Java程序读到。

android {
    testOptions {
        unitTests.all {
            //命令行下 单元测试可能卡住的问题
            jvmArgs '-noverify'
            //robolectric外部指定下载资源链接的参数，使用 -D 参数指定 bash gradlew clean build -Drobolectric.dependency.repo.url=http://127.0.0.1/jcenter
            systemProperty 'robolectric.dependency.repo.url', System.getProperty("robolectric.dependency.repo.url")
            systemProperty 'robolectric.dependency.repo.id', System.getProperty("robolectric.dependency.repo.id")
        }
    }
}

android {

testOptions {

unitTests.all {

//命令行下单元测试可能卡住的问题

jvmArgs '-noverify'

//robolectric外部指定下载资源链接的参数，使用 -D 参数指定 bash gradlew clean build -Drobolectric.dependency.repo.url=http://127.0.0.1/jcenter

systemProperty 'robolectric.dependency.repo.url', System.getProperty("robolectric.dependency.repo.url")

systemProperty 'robolectric.dependency.repo.id', System.getProperty("robolectric.dependency.repo.id")

}

每个项目的build.gradle中都增加上面的配置之后，就可以保证在外部编译的时候动态指定参数了。

在 Android Studio Chipmunk | 2021.2.1 Patch 1 以及以上的版本，可能会发生如下报错：

URI is not absolute
java.lang.IllegalArgumentException: URI is not absolute
	at java.base/java.net.URL.fromURI(URL.java:692)
	at java.base/java.net.URI.toURL(URI.java:1116)
	at org.robolectric.internal.dependency.MavenArtifactFetcher.getRemoteUrl(MavenArtifactFetcher.java:138)
	at org.robolectric.internal.dependency.MavenArtifactFetcher.fetchToStagingRepository(MavenArtifactFetcher.java:145)
	at org.robolectric.internal.dependency.MavenArtifactFetcher.fetchArtifact(MavenArtifactFetcher.java:65)
	at org.robolectric.internal.dependency.MavenDependencyResolver.lambda$getLocalArtifactUrls$0(MavenDependencyResolver.java:80)
	at org.robolectric.internal.dependency.MavenDependencyResolver.whileLocked(MavenDependencyResolver.java:100)
	at org.robolectric.internal.dependency.MavenDependencyResolver.getLocalArtifactUrls(MavenDependencyResolver.java:75)
	at org.robolectric.internal.dependency.MavenDependencyResolver.getLocalArtifactUrls(MavenDependencyResolver.java:65)
	at org.robolectric.internal.dependency.MavenDependencyResolver.getLocalArtifactUrl(MavenDependencyResolver.java:116)
	at org.robolectric.plugins.LegacyDependencyResolver.getLocalArtifactUrl(LegacyDependencyResolver.java:89)
	at org.robolectric.plugins.DefaultSdkProvider$DefaultSdk.getJarPath(DefaultSdkProvider.java:146)
	at org.robolectric.internal.AndroidSandbox$SdkSandboxClassLoader.<init>(AndroidSandbox.java:102)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
	at org.robolectric.util.inject.Injector.inject(Injector.java:250)
	at org.robolectric.util.inject.Injector.lambda$memoized$1(Injector.java:232)
	at org.robolectric.util.inject.Injector$MemoizingProvider.get(Injector.java:498)
	at org.robolectric.util.inject.Injector.getInstanceInternal(Injector.java:224)
	at org.robolectric.util.inject.Injector.resolveDependencies(Injector.java:296)
	at org.robolectric.util.inject.Injector.inject(Injector.java:248)
	at org.robolectric.util.inject.Injector.lambda$memoized$1(Injector.java:232)
	at org.robolectric.util.inject.Injector$MemoizingProvider.get(Injector.java:498)
	at org.robolectric.util.inject.Injector.getInstanceInternal(Injector.java:224)
	at org.robolectric.util.inject.Injector.getInstance(Injector.java:208)
	at org.robolectric.util.inject.Injector.access$700(Injector.java:96)
	at org.robolectric.util.inject.Injector$ScopeBuilderProvider.create(Injector.java:564)
	at org.robolectric.util.inject.Injector$ScopeBuilderProvider.lambda$get$0(Injector.java:547)
	at com.sun.proxy.$Proxy19.build(Unknown Source)
	at org.robolectric.internal.SandboxManager.getAndroidSandbox(SandboxManager.java:57)
	at org.robolectric.RobolectricTestRunner.getSandbox(RobolectricTestRunner.java:285)
	at org.robolectric.RobolectricTestRunner.getSandbox(RobolectricTestRunner.java:68)
	at org.robolectric.internal.SandboxTestRunner$2.evaluate(SandboxTestRunner.java:236)
	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.robolectric.internal.SandboxTestRunner$1.evaluate(SandboxTestRunner.java:93)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
	at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
	at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker$2.run(TestWorker.java:176)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
	at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:133)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:71)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)

URI is not absolute

java.lang.IllegalArgumentException: URI is not absolute

at java.base/java.net.URL.fromURI(URL.java:692)

at java.base/java.net.URI.toURL(URI.java:1116)

at org.robolectric.internal.dependency.MavenArtifactFetcher.getRemoteUrl(MavenArtifactFetcher.java:138)

at org.robolectric.internal.dependency.MavenArtifactFetcher.fetchToStagingRepository(MavenArtifactFetcher.java:145)

at org.robolectric.internal.dependency.MavenArtifactFetcher.fetchArtifact(MavenArtifactFetcher.java:65)

at org.robolectric.internal.dependency.MavenDependencyResolver.lambda$getLocalArtifactUrls$0(MavenDependencyResolver.java:80)

at org.robolectric.internal.dependency.MavenDependencyResolver.whileLocked(MavenDependencyResolver.java:100)

at org.robolectric.internal.dependency.MavenDependencyResolver.getLocalArtifactUrls(MavenDependencyResolver.java:75)

at org.robolectric.internal.dependency.MavenDependencyResolver.getLocalArtifactUrls(MavenDependencyResolver.java:65)

at org.robolectric.internal.dependency.MavenDependencyResolver.getLocalArtifactUrl(MavenDependencyResolver.java:116)

at org.robolectric.plugins.LegacyDependencyResolver.getLocalArtifactUrl(LegacyDependencyResolver.java:89)

at org.robolectric.plugins.DefaultSdkProvider$DefaultSdk.getJarPath(DefaultSdkProvider.java:146)

at org.robolectric.internal.AndroidSandbox$SdkSandboxClassLoader.<init>(AndroidSandbox.java:102)

at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)

at org.robolectric.util.inject.Injector.inject(Injector.java:250)

at org.robolectric.util.inject.Injector.lambda$memoized$1(Injector.java:232)

at org.robolectric.util.inject.Injector$MemoizingProvider.get(Injector.java:498)

at org.robolectric.util.inject.Injector.getInstanceInternal(Injector.java:224)

at org.robolectric.util.inject.Injector.resolveDependencies(Injector.java:296)

at org.robolectric.util.inject.Injector.inject(Injector.java:248)

at org.robolectric.util.inject.Injector.lambda$memoized$1(Injector.java:232)

at org.robolectric.util.inject.Injector$MemoizingProvider.get(Injector.java:498)

at org.robolectric.util.inject.Injector.getInstanceInternal(Injector.java:224)

at org.robolectric.util.inject.Injector.getInstance(Injector.java:208)

at org.robolectric.util.inject.Injector.access$700(Injector.java:96)

at org.robolectric.util.inject.Injector$ScopeBuilderProvider.create(Injector.java:564)

at org.robolectric.util.inject.Injector$ScopeBuilderProvider.lambda$get$0(Injector.java:547)

at com.sun.proxy.$Proxy19.build(Unknown Source)

at org.robolectric.internal.SandboxManager.getAndroidSandbox(SandboxManager.java:57)

at org.robolectric.RobolectricTestRunner.getSandbox(RobolectricTestRunner.java:285)

at org.robolectric.RobolectricTestRunner.getSandbox(RobolectricTestRunner.java:68)

at org.robolectric.internal.SandboxTestRunner$2.evaluate(SandboxTestRunner.java:236)

at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)

at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)

at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)

at org.robolectric.internal.SandboxTestRunner$1.evaluate(SandboxTestRunner.java:93)

at org.junit.runners.ParentRunner.run(ParentRunner.java:413)

at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)

at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)

at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)

at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)

at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:566)

at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)

at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)

at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)

at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)

at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)

at org.gradle.api.internal.tasks.testing.worker.TestWorker$2.run(TestWorker.java:176)

at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)

at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)

at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)

at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)

at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:133)

at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:71)

at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)

at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)

该报错的原因是 Android Studio 没有正确读取我们配置的 robolectric.dependency.repo.url 环境变量，导致无法成功下载，当然也可能是由于高版本不支持 HTTP ，链接地址必须是 HTTPS 导致此问题，这个没有深究。

解决方法是，在命令行执行

$ bash gradlew clean build -Drobolectric.dependency.repo.url=http://127.0.0.1/jcenter

1	$ bash gradlew clean build -Drobolectric.dependency.repo.url=http://127.0.0.1/jcenter

确保在当前用户目录下的 .m2 目录下，成功完成 robolectric 需要的全部文件的下载。这样，执行测试用例的时候，就可以从本地获取依赖文件，而不需要再去服务器上获取。

参考链接

Ubuntu Server 18.04 LTS隐藏Tomcat-9.0.16.0的版本号与操作系统类型

其他方案

其他的方案跟 Ubuntu 14.04隐藏Tomcat-7.0.52的版本号与操作系统类型是一致的，但是具体的细节上存在不小的差异，还是需要记录一下。

$ cd ~

$ mkdir catalina

$ cd catalina

$ cp /usr/share/tomcat9/lib/catalina.jar .

$ unzip catalina.jar

$ cd org/apache/catalina/util

$ vim ServerInfo.properties

$ cd ~

$ mkdir catalina

$ cd catalina

$ cp /usr/share/tomcat9/lib/catalina.jar .

$ unzip catalina.jar

$ cd org/apache/catalina/util

$ vim ServerInfo.properties

可以看到里面的内容如下：

# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

server.info=Apache Tomcat/9.0.16 (Ubuntu)
server.number=9.0.16.0
server.built=Sep 11 2019 19:47:51 UTC

# The ASF licenses this file to You under the Apache License, Version 2.0

# (the "License"); you may not use this file except in compliance with

# the License. You may obtain a copy of the License at

# http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

server.info=Apache Tomcat/9.0.16 (Ubuntu)

server.number=9.0.16.0

server.built=Sep 11 2019 19:47:51 UTC

直接注释掉里面的内容，如下：

# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# server.info=Apache Tomcat/9.0.16 (Ubuntu)
# server.number=9.0.16.0
# server.built=Sep 11 2019 19:47:51 UTC

# The ASF licenses this file to You under the Apache License, Version 2.0

# (the "License"); you may not use this file except in compliance with

# the License. You may obtain a copy of the License at

# http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# server.info=Apache Tomcat/9.0.16 (Ubuntu)

# server.number=9.0.16.0

# server.built=Sep 11 2019 19:47:51 UTC

修改完成后，把修改完成的数据存储到catalina.jar中。

$ cd ~

$ cd catalina

$ sudo apt install openjdk-11-jdk-headless

$ jar uvf catalina.jar org/apache/catalina/util/ServerInfo.properties

$ cd ~

$ cd catalina

$ sudo apt install openjdk-11-jdk-headless

$ jar uvf catalina.jar org/apache/catalina/util/ServerInfo.properties

把修改后的catalina.jar放回到Tomcat的目录下面:

$ cd ~

$ cd catalina

$ sudo unlink /usr/share/tomcat9/lib/catalina.jar 

$ sudo mv /usr/share/java/tomcat9-catalina.jar /usr/share/java/tomcat9-catalina.jar.old

$ sudo cp catalina.jar /usr/share/java/

$ sudo chmod +r /usr/share/java/catalina.jar

$ cd /usr/share/tomcat9/lib

$ sudo ln -s ../../java/catalina.jar catalina.jar

$ cd ~

$ cd catalina

$ sudo unlink /usr/share/tomcat9/lib/catalina.jar

$ sudo mv /usr/share/java/tomcat9-catalina.jar /usr/share/java/tomcat9-catalina.jar.old

$ sudo cp catalina.jar /usr/share/java/

$ sudo chmod +r /usr/share/java/catalina.jar

$ cd /usr/share/tomcat9/lib

$ sudo ln -s ../../java/catalina.jar catalina.jar

重启Tomcat的服务

$ sudo service tomcat9 restart

1	$ sudo service tomcat9 restart

参考链接

腾讯云Ubuntu Server 16.04.7 LTS升级系统到Ubuntu Server 18.04.5 LTS之后letsencrypt证书更新出现异常“ImportError: cannot import name _remove_dead_weakref”

腾讯云Ubuntu Server 16.04.7 LTS升级系统到Ubuntu Server 18.04.5 LTS之后，letsencrypt证书更新出现异常,如下：

$ sudo ./letsencrypt-auto
Error: couldn't get currently installed version for /opt/eff.org/certbot/venv/bin/letsencrypt: 
Traceback (most recent call last):
  File "/opt/eff.org/certbot/venv/bin/letsencrypt", line 7, in <module>
    from certbot.main import main
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/main.py", line 2, in <module>
    from certbot._internal import main as internal_main
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/_internal/main.py", line 6, in <module>
    import logging.handlers
  File "/usr/lib/python2.7/logging/__init__.py", line 26, in <module>
    import sys, os, time, cStringIO, traceback, warnings, weakref, collections
  File "/usr/lib/python2.7/weakref.py", line 14, in <module>
    from _weakref import (
ImportError: cannot import name _remove_dead_weakref

$ sudo ./letsencrypt-auto

Error: couldn't get currently installed version for /opt/eff.org/certbot/venv/bin/letsencrypt:

Traceback (most recent call last):

File "/opt/eff.org/certbot/venv/bin/letsencrypt", line 7, in <module>

from certbot.main import main

File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/main.py", line 2, in <module>

from certbot._internal import main as internal_main

File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/_internal/main.py", line 6, in <module>

import logging.handlers

File "/usr/lib/python2.7/logging/__init__.py", line 26, in <module>

import sys, os, time, cStringIO, traceback, warnings, weakref, collections

File "/usr/lib/python2.7/weakref.py", line 14, in <module>

from _weakref import (

ImportError: cannot import name _remove_dead_weakref

原因为系统版本变化过大导致以前安装的Python组件不能适应最新的系统，最简单的方法就是删除之前安装的Python组件，让letsencrypt重新安装即可。

$ sudo apt-get install python-pip

$ sudo rm -rf /opt/eff.org/

$ sudo ./letsencrypt-auto

$ sudo apt-get install python-pip

$ sudo rm -rf /opt/eff.org/

$ sudo ./letsencrypt-auto

参考链接

Cannot renew certificate “ImportError: cannot import name _remove_dead_weakref”

腾讯云Ubuntu Server 16.04.7 LTS升级系统到Ubuntu Server 18.04.5 LTS

参考阿里云ECS ubuntu 14.04.5 LTS升级到ubuntu 16.04.2 LTS / 阿里云从ubuntu16.04.5升级到ubuntu 18.04.3后调整PHP 7.0到PHP 7.2 整个的升级步骤是差不多的，腾讯的升级流程更加顺利。

但是在升级完成之后，遇到了一个域名解析问题，报错如下：

$ ping www.baidu.com
ping: www.baidu.com: Temporary failure in name resolution

$ sudo apt-get update
Err:1 http://mirrors.tencentyun.com/ubuntu bionic InRelease
  Temporary failure resolving 'mirrors.tencentyun.com'
Err:2 http://mirrors.tencentyun.com/ubuntu bionic-security InRelease
  Temporary failure resolving 'mirrors.tencentyun.com'
Err:3 http://mirrors.tencentyun.com/ubuntu bionic-updates InRelease
  Temporary failure resolving 'mirrors.tencentyun.com'

$ ping www.baidu.com

ping: www.baidu.com: Temporary failure in name resolution

$ sudo apt-get update

Err:1 http://mirrors.tencentyun.com/ubuntu bionic InRelease

Temporary failure resolving 'mirrors.tencentyun.com'

Err:2 http://mirrors.tencentyun.com/ubuntu bionic-security InRelease

Temporary failure resolving 'mirrors.tencentyun.com'

Err:3 http://mirrors.tencentyun.com/ubuntu bionic-updates InRelease

Temporary failure resolving 'mirrors.tencentyun.com'

这个原因是因为我们在安装过程中，覆盖了腾讯设置的域名解析服务配置文件。

这个配置文件是/etc/resolv.conf。

但是，在Ubuntu Server 18.04.5 LTS系统上，直接修改/etc/resolv.conf的话，重启系统之后，设置会被还原。我们需要修改/etc/systemd/resolved.conf才行。

根据地域的不同，服务器的地址存在差异，参考下面的脚本即可。

广州服务器：

# 不存在则增加
$ sudo sed -i "s/^#DNS=.*/DNS=10.138.224.65 10.182.20.26 10.182.24.12/g" /etc/systemd/resolved.conf

# 存在则替换
$ sudo sed -i "s/^DNS=.*/DNS=10.138.224.65 10.182.20.26 10.182.24.12/g" /etc/systemd/resolved.conf

# 重启服务，配置生效
$ sudo systemctl restart systemd-resolved.service

# 不存在则增加

$ sudo sed -i "s/^#DNS=.*/DNS=10.138.224.65 10.182.20.26 10.182.24.12/g" /etc/systemd/resolved.conf

# 存在则替换

$ sudo sed -i "s/^DNS=.*/DNS=10.138.224.65 10.182.20.26 10.182.24.12/g" /etc/systemd/resolved.conf

# 重启服务，配置生效

$ sudo systemctl restart systemd-resolved.service

上海服务器：

# 不存在则增加
$ sudo sed -i "s/^#DNS=.*/DNS=10.236.158.106 10.237.148.54 10.237.148.60/g" /etc/systemd/resolved.conf

# 存在则替换
$ sudo sed -i "s/^DNS=.*/DNS=10.236.158.106 10.237.148.54 10.237.148.60/g" /etc/systemd/resolved.conf

# 重启服务，配置生效
$ sudo systemctl restart systemd-resolved.service

# 不存在则增加

$ sudo sed -i "s/^#DNS=.*/DNS=10.236.158.106 10.237.148.54 10.237.148.60/g" /etc/systemd/resolved.conf

# 存在则替换

$ sudo sed -i "s/^DNS=.*/DNS=10.236.158.106 10.237.148.54 10.237.148.60/g" /etc/systemd/resolved.conf

# 重启服务，配置生效

$ sudo systemctl restart systemd-resolved.service

香港服务器：

# 不存在则增加
$ sudo sed -i "s/^#DNS=.*/DNS=10.243.28.52 10.145.0.57 10.145.0.58/g" /etc/systemd/resolved.conf

# 存在则替换
$ sudo sed -i "s/^DNS=.*/DNS=10.243.28.52 10.145.0.57 10.145.0.58/g" /etc/systemd/resolved.conf

# 重启服务，配置生效
$ sudo systemctl restart systemd-resolved.service

# 不存在则增加

$ sudo sed -i "s/^#DNS=.*/DNS=10.243.28.52 10.145.0.57 10.145.0.58/g" /etc/systemd/resolved.conf

# 存在则替换

$ sudo sed -i "s/^DNS=.*/DNS=10.243.28.52 10.145.0.57 10.145.0.58/g" /etc/systemd/resolved.conf

# 重启服务，配置生效

$ sudo systemctl restart systemd-resolved.service

参考链接

warn: multiple substitutions specified in non-positional format; did you mean to add the formatted="false" attribute?

编辑strings.xml的时候

<string name="myurl">http://code.dd.com/rr?q=%rr.55</string>

1	<string name="myurl">http://code.dd.com/rr?q=%rr.55</string>

或者

<string name="message_content'>恭喜您你获得%1s 积分，占比%2s %</string>

1	<string name="message_content'>恭喜您你获得%1s 积分，占比%2s %</string>

提示下面的错误

Multiple annotations found at this line:
- error: Multiple substitutions specified in non-positional format; did you mean to add
the formatted="false" attribute?
- error: Unexpected end tag string

Multiple annotations found at this line:

- error: Multiple substitutions specified in non-positional format; did you mean to add

the formatted="false" attribute?

- error: Unexpected end tag string

出现这个错误的原因主要是因为strings字串中包含百分号(%),

有几种方式解决

1.用两个百分号表示一个百分号即

<string name="myurl">http://code.dd.com/rr?q=%%rr.55</string>

<string name="message_content">恭喜您你获得%1s 积分，占比%2s %%</string>

<string name="message_content">恭喜您你获得%1s 积分，占比%2s %%</string>

2.用转义符表示

<string name="myurl">http://code.dd.com/rr?q=\%rr.55</string>

1	<string name="myurl">http://code.dd.com/rr?q=\%rr.55</string>

二：无需格式化

根据错误提示可知,如果字符串无需格式化，可在<string> 标签上增加属性:formatted="false",即

<string name="myurl" formatted="false">http://code.dd.com/rr?q=%rr.55</string>

1	<string name="myurl" formatted="false">http://code.dd.com/rr?q=%rr.55</string>

三：关于上面问题的延伸

如果你需要使用String.format(String, Object...) 来格式化你的字符串，你可以把格式化参数放在你的字符串中，参见下面的例子：

<string name="welcome_messages">Hello, %1$s! You have %2$d new messages.</string>

1	<string name="welcome_messages">Hello, %1$s! You have %2$d new messages.</string>

在这个例子中，这个格式化的字符串有2个参数， %1$s是个字符串%2$d是个浮点数，你可以在你的程序中按照下面的方法来根据参数来格式化字符串：

Resources res = getResources();

String text = String.format(res.getString(R.string.welcome_messages), username, mailCount);

Resources res = getResources();

String text = String.format(res.getString(R.string.welcome_messages), username, mailCount);

目前Android的SDK已经支持直接格式化字符串，不需要使用String.format(String, Object...) ，如下

Resources res = getResources();

String text = res.getString(R.string.welcome_messages, username, mailCount);

Resources res = getResources();

String text = res.getString(R.string.welcome_messages, username, mailCount);

那么根据例子上说的我需要把%s换成%1$s才行了，修改后编译通过，程序成功启动。

参考链接

Ubuntu 18.04/20.04更换国内源

今天发现cn.archive.ubuntu.com不能更新了，只能换成国内源:

$ sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

# 阿里云
$ sudo sed -i "s/cn.archive.ubuntu.com/mirrors.aliyun.com/g" /etc/apt/sources.list

$ sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

# 阿里云

$ sudo sed -i "s/cn.archive.ubuntu.com/mirrors.aliyun.com/g" /etc/apt/sources.list

参考链接

ubuntu 阿里云源

关于提示“The type StringEscapeUtils is deprecated”问题的解决

如题所示，之前一直使用commons-lang3-3.x.jar 这个jar包里面的 org.apache.commons.lang3.StringEscapeUtils 类来转义特殊字符，但是最近发现使用这个类会出现以下提示：

Multiple markers at this line
	- The type StringEscapeUtils is deprecated
	- The method escapeXml11(String) from the type StringEscapeUtils is 
	 deprecated

Multiple markers at this line

- The type StringEscapeUtils is deprecated

- The method escapeXml11(String) from the type StringEscapeUtils is

deprecated

看提示是说 StringEscapeUtils 这个类已经过期了，提醒使用新的替代类。看了下这个类的官方文档，很自然地找到了新的替代类——org.apache.commons.text.StringEscapeUtils

因此，使用Maven引用相应的jar包即可解决这个问题：

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-text</artifactId>
    <version>1.9</version>
</dependency>

<groupId>org.apache.commons</groupId>

<artifactId>commons-text</artifactId>

</dependency>

或者直接去Maven仓库下载这个jar包，下载地址如下：http://mvnrepository.com/artifact/org.apache.commons/commons-text/1.1

参考链接

关于提示“The type StringEscapeUtils is deprecated”问题的解决

apache日志中的中文如何显示？

apache日志记录的中文，是内码如下：

\xb6\xd4\xb6\xc0\xc1\xa2\xd1\xa7\xd4\xba\xbf\xc9\xb3\xd6\xd0\xf8\xb7\xa2\xd5\xb9\xce\xca\xcc\xe2

1	\xb6\xd4\xb6\xc0\xc1\xa2\xd1\xa7\xd4\xba\xbf\xc9\xb3\xd6\xd0\xf8\xb7\xa2\xd5\xb9\xce\xca\xcc\xe2

编码后中文是：

对独立学院可持续发展问题

1	对独立学院可持续发展问题

完全看不懂是什么意思，如何解析出里面的中文出来呢？

php参考如下代码：

<?php
  $str="\xb6\xd4\xb6\xc0\xc1\xa2\xd1\xa7\xd4\xba\xbf\xc9\xb3\xd6\xd0\xf8\xb7\xa2\xd5\xb9\xce\xca\xcc\xe2";
  eval("\$str = \"$str\";");
  echo iconv('GB2312','UTF-8',$str."\n");
?>

<?php

$str="\xb6\xd4\xb6\xc0\xc1\xa2\xd1\xa7\xd4\xba\xbf\xc9\xb3\xd6\xd0\xf8\xb7\xa2\xd5\xb9\xce\xca\xcc\xe2";

eval("\$str = \"$str\";");

echo iconv('GB2312','UTF-8',$str."\n");

golang参考如下代码：

import (
    "fmt"
    "log"
    "os"
    "code.google.com/p/mahonia"
)
func main() {
    var use_logfile bool
    use_logfile = true
    f, err := os.OpenFile("testlogfile", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
    if err != nil {
        log.Fatalf("error opening file: %v", err)
    }
    defer f.Close()
    if use_logfile {
        log.SetOutput(f)
    }
    s := "\xb6\xd4\xb6\xc0\xc1\xa2\xd1\xa7\xd4\xba\xbf\xc9\xb3\xd6\xd0\xf8\xb7\xa2\xd5\xb9\xce\xca\xcc\xe2"
    enc := mahonia.NewDecoder("UTF-8")
    x := enc.ConvertString(s)
    gbk := mahonia.NewDecoder("gbk")
    n := gbk.ConvertString(s)
    log.Printf("file:", x, n)
    fmt.Println(x, n)
}

import (

"fmt"

"log"

"os"

"code.google.com/p/mahonia"

)

func main() {

var use_logfile bool

use_logfile = true

f, err := os.OpenFile("testlogfile", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)

if err != nil {

log.Fatalf("error opening file: %v", err)

}

defer f.Close()

if use_logfile {

log.SetOutput(f)

}

s := "\xb6\xd4\xb6\xc0\xc1\xa2\xd1\xa7\xd4\xba\xbf\xc9\xb3\xd6\xd0\xf8\xb7\xa2\xd5\xb9\xce\xca\xcc\xe2"

enc := mahonia.NewDecoder("UTF-8")

x := enc.ConvertString(s)

gbk := mahonia.NewDecoder("gbk")

n := gbk.ConvertString(s)

log.Printf("file:", x, n)

fmt.Println(x, n)

}

java参考如下代码：

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.StandardCharsets;


public class HelloWorld {
    private static String unescapeGBK(final String s) {
        final StringBuilder buf = new StringBuilder();
        int i = 0;
        int len = s.length();
        while (i < len) {
            int ch = s.charAt(i);
            if (ch == '\\') {
                // \xXX\xXX : map to unicode(XXXX)
                int c = (char) ((Character.digit(s.charAt(i + 2), 16) << 4)
                        + Character.digit(s.charAt(i + 3), 16));
                c = c << 8;
                c += (char) ((Character.digit(s.charAt(i + 6), 16) << 4)
                        + Character.digit(s.charAt(i + 7), 16));

                buf.append((char) c);
                i += 7;
            } else {
                buf.append((char) ch);
            }
            i++;
        }
        return buf.toString();
    }

    public static void main(String args[]) throws UnsupportedEncodingException {
        // UTF-8
        String coderStr = "\\x22\\xE5\\x93\\x88\\xE5\\x93\\x88\\x22";
        String str = coderStr.replaceAll("\\\\x", "%");
        str = URLDecoder.decode(str, StandardCharsets.UTF_8.toString());
        System.out.println(str);
        // GBK
        coderStr = "\\xb6\\xd4\\xb6\\xc0\\xc1\\xa2\\xd1\\xa7\\xd4\\xba\\xbf\\xc9\\xb3\\xd6\\xd0\\xf8\\xb7\\xa2\\xd5\\xb9\\xce\\xca\\xcc\\xe2";
        str = getApacheChineseGBK(coderStr);
        System.out.println(str);
    }

    public static String getApacheChineseGBK(String str) throws UnsupportedEncodingException {
        str = str.trim().toLowerCase();
        str = unescapeGBK(str);
        final ByteBuffer byteBuffer = ByteBuffer.allocate(str.length() * Character.SIZE / Byte.SIZE);
        final CharBuffer converter = byteBuffer.asCharBuffer();
        converter.append(CharBuffer.wrap(str));
        str = new String(byteBuffer.array(), "GBK");
        return str;
    }
}

import java.io.UnsupportedEncodingException;

import java.net.URLDecoder;

import java.nio.ByteBuffer;

import java.nio.CharBuffer;

import java.nio.charset.StandardCharsets;

public class HelloWorld {

private static String unescapeGBK(final String s) {

final StringBuilder buf = new StringBuilder();

int i = 0;

int len = s.length();

while (i < len) {

int ch = s.charAt(i);

if (ch == '\\') {

// \xXX\xXX : map to unicode(XXXX)

int c = (char) ((Character.digit(s.charAt(i + 2), 16) << 4)

+ Character.digit(s.charAt(i + 3), 16));

c = c << 8;

c += (char) ((Character.digit(s.charAt(i + 6), 16) << 4)

+ Character.digit(s.charAt(i + 7), 16));

buf.append((char) c);

i += 7;

} else {

buf.append((char) ch);

}

i++;

}

return buf.toString();

}

public static void main(String args[]) throws UnsupportedEncodingException {

// UTF-8

String coderStr = "\\x22\\xE5\\x93\\x88\\xE5\\x93\\x88\\x22";

String str = coderStr.replaceAll("\\\\x", "%");

str = URLDecoder.decode(str, StandardCharsets.UTF_8.toString());

System.out.println(str);

// GBK

coderStr = "\\xb6\\xd4\\xb6\\xc0\\xc1\\xa2\\xd1\\xa7\\xd4\\xba\\xbf\\xc9\\xb3\\xd6\\xd0\\xf8\\xb7\\xa2\\xd5\\xb9\\xce\\xca\\xcc\\xe2";

str = getApacheChineseGBK(coderStr);

System.out.println(str);

}

public static String getApacheChineseGBK(String str) throws UnsupportedEncodingException {

str = str.trim().toLowerCase();

str = unescapeGBK(str);

final ByteBuffer byteBuffer = ByteBuffer.allocate(str.length() * Character.SIZE / Byte.SIZE);

final CharBuffer converter = byteBuffer.asCharBuffer();

converter.append(CharBuffer.wrap(str));

str = new String(byteBuffer.array(), "GBK");

return str;

}

参考链接

macOS Catalina(10.15.6)双网卡同时连内外网

单位为了安全，需要使用网线连接内网，此时不能连接外网，无线可以连接外网，却又不能完成部分在内网才能完成的操作。

修改无线网卡的优先级，使之大于有线网卡

继续阅读macOS Catalina(10.15.6)双网卡同时连内外网

年度归档： 2020 年

Centos 7配置Jenkins构建Android持续集成(离线内网环境)

安装配置Jenkins

Gradle传递System Property

参考链接

Ubuntu Server 18.04 LTS隐藏Tomcat-9.0.16.0的版本号与操作系统类型

推荐方案

其他方案

参考链接

腾讯云Ubuntu Server 16.04.7 LTS升级系统到Ubuntu Server 18.04.5 LTS之后letsencrypt证书更新出现异常“ImportError: cannot import name _remove_dead_weakref”

参考链接

腾讯云Ubuntu Server 16.04.7 LTS升级系统到Ubuntu Server 18.04.5 LTS

参考链接

warn: multiple substitutions specified in non-positional format; did you mean to add the formatted="false" attribute?

有几种方式解决

1.用两个百分号表示一个百分号即

2.用转义符表示

二：无需格式化

三：关于上面问题的延伸

参考链接

Ubuntu 18.04/20.04更换国内源

参考链接

关于提示“The type StringEscapeUtils is deprecated”问题的解决

参考链接

apache日志中的中文如何显示？

参考链接

macOS Catalina(10.15.6)双网卡同时连内外网

修改无线网卡的优先级，使之大于有线网卡

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