找不到Javac编译器maven sonar:sonar

我正在用声纳分析一个项目

mvn clean install -DskipTests=true

我遇到的问题是：

C:\Users\user\Desktop\sepm_git\qse-sepm-ws12-02\vpm>mvn clean install -DskipTe
sts=true
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building vpm 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ vpm ---
[INFO] Deleting C:\Users\user\Desktop\sepm_git\qse-sepm-ws12-02\vpm\target
[INFO]
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ vpm ---
[debug] execute contextualize
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\Users\user\Desktop\sepm_git\qse-
sepm-ws12-02\vpm\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ vpm ---
[INFO] Compiling 92 source files to C:\Users\user\Desktop\sepm_git\qse-sepm-ws
12-02\vpm\target\classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] Unable to locate the Javac Compiler in:
  C:\Program Files (x86)\Java\jre7\..\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: 0.920s
[INFO] Finished at: Fri Dec 21 15:43:57 CET 2012
[INFO] Final Memory: 4M/15M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.
3.2:compile (default-compile) on project vpm: Compilation failure
[ERROR] Unable to locate the Javac Compiler in:
[ERROR] C:\Program Files (x86)\Java\jre7\..\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 swit
ch.
[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 rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureExc
eption
C:\Users\user\Desktop\sepm_git\qse-sepm-ws12-02\vpm>

但是,

my java home var设置为：

echo %JAVA_HOME% 
C:\Program Files (x86)\Java\jre7

在eclipse中，我在首选项下设置：

---

知道它为什么不起作用吗？

看起来您指向的是Java运行时环境（JRE），而不是Java开发工具包

[ERROR] Unable to locate the Javac Compiler in:
  C:\Program Files (x86)\Java\jre7\..\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).

---

JRE只包含JVM（

java.exe

）和相关的lib等。JDK是其超集，包含JRE+编译器（

javac.exe）

和相关工具。您通常在不需要编译器的生产环境中安装JRE，在开发环境中安装JDK。

将JAVA\u主页设置为C:\Program Files（x86）\Java\jdk1.7.0_09

我有一个类似的问题，我通过在eclipse luna中将JRE设置为C:\Program Files\Java\jdk1.7.0_51\JRE来解决它。

方式1：以下步骤适用于eclipse：

转到窗口->首选项->Java->已安装的JRE

将现有JRE位置编辑为：Set JRE Home=JAVA\u Home或JAVA\u Home\JRE（在您的情况下，路径应为C:\Program Files\JAVA\jdk1.7.0\u 09或C:\Program Files\JAVA\jdk1.7.0\u 09\JRE）

单击完成并确定按钮

方式2：设置JRE系统库的另一种方式：

打开eclipse并右键单击eclipse项目属性

Java构建路径->库

选择JRE系统库->单击编辑按钮

单击“已安装的JRE…”按钮

将JRE编辑为：设置JRE Home=JAVA\u Home或JAVA\u Home\JRE

方式3：以下步骤也应有效：

转到窗口->首选项->Java->已安装的JRE

选择您正在使用的JRE

按编辑->添加外部罐子

浏览到Java\jdk1.7.0_09\lib，选择tools.jar并按Enter键

单击完成并确定按钮