本文介绍了解决在Eclipse中运行Maven项目时遇到的错误：无法找到Java编译器的问题。主要原因是m2eclipse插件未能找到正确的JDK安装路径。文章提供了配置Eclipse使用正确JDK目录的方法，以及如何设置maven运行配置中的JRE为工作空间默认JRE。
When run maven project in Eclipse, you probably encounter the below error:
![[ERROR] Unable to locate the Javac Compiler in - wengm - Bruce Wen的成长历程](http://img0.ph.126.net/fgUQB_rYc0G0rxcriDVS4w==/6597630517586238690.jpg)
![[ERROR] Unable to locate the Javac Compiler in - wengm - Bruce Wen的成长历程](http://img8.ph.126.net/LDtVSWtv5TRrrQE0y8Tdmg==/6597905395493182658.jpg)
OK. The problem is solved.
Unable to locate the Javac Compiler in:
C:\Program Files\Java\jre1.6.0_07\..\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.
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.
The reason is that m2eclipse plugin want to find the tools.jar in JDK_HOME/lib folder. That
means you must install JDK to execute maven in Eclipse.
In Eclipse, you can configure the JRE included in JDK directory.
Then, configure JRE of maven Run Configuration as workspace default JRE.
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