无法找到Javac Compiler maven声纳：声纳

Question

我正试图用声纳分析一个项目。

mvn clean install -DskipTests=true

我得到的问题：

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>

然而，

我的java home var设置为：

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

在我设置的偏好下的eclipse中：

知道为什么它不起作用？

Answer 1

看起来你指的是Java Runtime Environment（JRE），而不是Java Development Kit

[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是它的超集，包含JRE +编译器（javac.exe)和相关工具。你通常安装JRE在不需要编译器的生产盒上，以及开发环境中的JDK。

Answer 2

将您的JAVA_HOME设置为C：\ Program Files（x86）\ Java \ jdk1.7.0_09

Answer 3

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。

Answer 4

方式1 ：以下步骤适用于Eclipse：

1. 转到窗口 - ＆gt;偏好 - ＆gt; Java - ＆gt;已安装JRE
2. 将现有JRE位置编辑为：设置JRE Home = JAVA_HOME或JAVA_HOME \ jre（在您的情况下，路径应为C：\ Program Files \ Java \ jdk1.7.0_09或C：\ Program Files \ Java \ jdk1。 7.0_09 \ JRE）
3. 单击“完成”和“确定”按钮

方式2 ：设置JRE系统库的另一种方法：

1. 打开eclipse并右键单击Eclipse项目属性
2. Java构建路径 - ＆gt;库
3. 选择JRE系统库 - ＆gt;单击“编辑”按钮
4. 点击＆＃34;已安装的JRE ...＆＃34;按钮
5. 将JRE编辑为：设置JRE Home = JAVA_HOME或JAVA_HOME \ jre

方式3 ：以下步骤也应运行良好：

1. 转到窗口 - ＆gt;偏好 - ＆gt; Java - ＆gt;已安装JRE
2. 选择您正在使用的JRE
3. 按编辑 - ＆gt;添加外部JAR ......
4. 浏览到Java \ jdk1.7.0_09 \ lib并选择tools.jar并按Enter键
5. 单击“完成”和“确定”按钮