Jenkins maven无法在JDK中找到Javac编译器

问题：无法使用Jenkins和JDK 1.8构建spring maven项目

说明：我正在使用Jenkins构建由Maven管理的spring项目。我已经使用JDK安装选项在Jenkins中配置了Java 1.7和1.8。在构建配置中选择Java1.7并运行构建时，构建过程成功。但当我在构建配置中选择Java1.8并运行构建时，构建过程就会失败

****下面是jenkins控制台输出****

JAVA_HOME变量正确地指向JDK 1.8安装主目录，bin文件夹也添加到路径中

echo%JAVA\u HOME%结果为C:\DevEnv\ProgramFiles\JAVA\jdk1.8.0\u 20

将JAVA_HOME变量更改为指向JAVA 1.7时，构建运行正常，没有错误

根本原因

调试时，它最终位于artifactplexus编译器javac的JavacCompiler.java文件中。编译过程中的行System.getProperty（“java.home”）对Java8和Java7的输出不同

Java 7-C:\DevEnv\ProgramFiles\Java\jdk1.7.0\u 80\jre

Java 8-C:\DevEnv\ProgramFiles\Java\jdk1.8.0\u 20

工作解决方案：

---

重新安装Java 8

通过

cmd

启动从机，但不要键入

“Java-jar slave.jar…”

，而是将

Java.exe

的完整路径提到

“C:\Program Files\Java\jdk1.8.0\u 121\bin\Java.exe”-jar slave.jar……

，以消除任何疑问，确实在

C:\DevEnv\ProgramFiles\Java\jdk1.8.0_20

下安装了一个jdk，当指向它时，运行

javac-version

会产生正确的结果，对吗？是的..运行命令C:\Users\anonymous>javac-version会得到输出-->javac 1.8.0\u 20经过几个小时的调试，了解maven是如何获得tools.jar来启动sun的主类的，获得了成功（使用JDK 1.7）和失败（使用JDK 1.8）的自定义日志输出，构建运行如下成功（使用JDK 1.7构建）[INFO]toolsJar文件C:\DevEnv\ProgramFiles\Java\jdk1.7.0_80\jre\..\lib\tools.jar[INFO]添加url文件：/C:/DevEnv/ProgramFiles/Java/jdk1.7.0_80/jre/./lib/tools.jarFailure（使用JDK 1.8构建）[INFO]toolsJar文件C:\DevEnv\ProgramFiles\Java\jdk1.8.0_20\..\lib\tools.jar

Started by user anonymous
Building in workspace C:\Users\anonymous\.jenkins\jobs\springsecuritysampleproject1\workspace
Updating file:///C:/DevEnv/Repositories/LocalSVNServerRepo/root/springsecuritysample/trunk at revision '2016-01-13T13:35:52.488 +0530'
U         src\main\java\org\springframework\security\sample\HomeController.java
At revision 21
Parsing POMs
[workspace] $ C:\DevEnv\ProgramFiles\Java\jdk1.8.0_20/bin/java -cp C:\Users\anonymous\.jenkins\plugins\maven-plugin\WEB-INF\lib\maven31-agent-1.5.jar;C:\DevEnv\ProgramFiles\ProjectTools\Apache_Maven_3.3.3\boot\plexus-classworlds-2.5.2.jar;C:\DevEnv\ProgramFiles\ProjectTools\Apache_Maven_3.3.3/conf/logging jenkins.maven3.agent.Maven31Main C:\DevEnv\ProgramFiles\ProjectTools\Apache_Maven_3.3.3 C:\Users\anonymous\.jenkins\war\WEB-INF\lib\remoting-2.53.2.jar C:\Users\anonymous\.jenkins\plugins\maven-plugin\WEB-INF\lib\maven31-interceptor-1.5.jar C:\Users\anonymous\.jenkins\plugins\maven-plugin\WEB-INF\lib\maven3-interceptor-commons-1.5.jar 52876
<===[JENKINS REMOTING CAPACITY]===>channel started
Executing Maven:  -B -f C:\Users\anonymous\.jenkins\jobs\springsecuritysampleproject1\workspace\pom.xml install
Waiting for Jenkins to finish collecting data
[JENKINS] Archiving C:\Users\anonymous\.jenkins\jobs\springsecuritysampleproject1\workspace\pom.xml to org.springframework.security/sample/1.0.0-BUILD-SNAPSHOT/sample-1.0.0-BUILD-SNAPSHOT.pom
Sending e-mails to: test@test.com
channel stopped
Archiving artifacts
Sending e-mails to: test@test.com
Finished: FAILURE

INFO] Compiling 1 source file to C:\DevEnv\STSWorkspaces\springsecuritysample\target\classes
[INFO] -------------------------------------------------------------
**[ERROR] COMPILATION ERROR :** 
[INFO] -------------------------------------------------------------
[ERROR] Unable to locate the Javac Compiler in:
  C:\DevEnv\ProgramFiles\Java\jdk1.8.0_20\..\lib\tools.jar
Please ensure you are using JDK 1.4 or above and
not a JRE (the com.sun.tools.javac.Main class is required).
In most cases you can change the location of your Java
installation by setting the JAVA_HOME environment variable.
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.640 s
[INFO] Finished at: 2016-01-13T13:40:34+05:30
[INFO] Final Memory: 8M/487M
[INFO] ------------------------------------------------------------------------