No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?

使用m2eclipse可能遇到如下错误

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project hello-world: Compilation failure
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[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

这是因为Eclipse默认是运行在JRE上的，而m2eclipse的一些功能要求使用JDK。解决方法是配置Eclipse安装目录的eclipse.ini文件，在-vmargs 参数的前面，添加vm配置指向JDK。例如：

--launcher.appendVmargs
-vm
C:\Program Files\Java\jdk1.7.0_21\bin\javaw.exe
-vmargs
-Dosgi.requiredJavaVersion=1.6
-Xms40m
-Xmx512m