Troubleshooting：Eclipse中用Maven编译报错的解决方法

【环境】

eclipse-jee-juno-SR2-win32-x86_64

apache-maven-3.0.4

【Eclipse报错】

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project sxf_transaction: Compilation failure 
[ERROR] Unable to locate the Javac Compiler in: 
[ERROR] C:\Program Files\Java\jre6\..\lib\tools.jar 
[ERROR] Please ensure you are using JDK 1.4 or above and 
[ERROR] not a JRE (the com.sun.tools.javac.Main class is required). 
[ERROR] In most cases you can change the location of your Java 
[ERROR] installation by setting the JAVA_HOME environment variable. 
[ERROR] -> [Help 1] 
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. 
[ERROR] Re-run Maven using the -X switch to enable full debug logging. 
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles: 
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException 

【原因】

根据错误提示，需要JDK而不是JRE，并且需1.4以上版本。Eclipse的默认运行环境是JRE，而Maven编译需要JDK。

【排错】

 1. 在cmd中用命令echo %JAVA_HOME%查看环境变量，指向正确。

2. 修改eclipse.ini文件，加入下面2句，依然不起作用。

-vm
C:\Program Files\Java\jdk1.7.0_02\bin\javaw.exe

-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20120522-1813
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
-vm
C:\Program Files\Java\jdk1.7.0_02\bin\javaw.exe
--launcher.defaultAction
openFile
-vmargs
-Xms40m
-Xmx512m

3. 在Eclipse->Window->Preferences->Java->Installed JREs->Add...->Standard VM里，JRE home选择
JDK的目录。再勾选，如下图，问题解决。