No compiler is provided in this environment. Perhaps you are running on a JR
2017-07-20 15:51
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http://blog.csdn.net/raymond27/article/details/54962795
出现错误后，查看了许多网友的解决方式，但都没有解决我遇到的问题，可能是情况还是有些许的不同；下面直接说说我的问题的解决办法，希望对大家有所帮助；Eclipse中Maven报错信息如下：
本以为可能是Eclipse配置Maven没配置好，或者是jdk和jre环境出现问题，后来在cmd窗口找到maven目录，输入mvn clean compile也输出同样的错误，大致阅读了一下，说的是执行编译失败，"你是不是在JRE环境下运行而不是JDK？"，想了想，JDK已安装、各种环境变量配置没有问题，为什么会出现这种状况呢？寻思了一会儿，知道了原来Eclipse运行是需要一个JRE，而这个JRE并不是系统环境变量中的
在Eclipse的菜单中，进入 Window > Preferences > Java > Installed JREs > Execution Environments，选择JavaSE-1.x, 在右侧选择JDK的安装目录（注意不要选择JRE的目录）.
然后，进行maven install的时候就会找得到javac了。
出现错误后，查看了许多网友的解决方式，但都没有解决我遇到的问题，可能是情况还是有些许的不同；下面直接说说我的问题的解决办法，希望对大家有所帮助；Eclipse中Maven报错信息如下：
本以为可能是Eclipse配置Maven没配置好，或者是jdk和jre环境出现问题，后来在cmd窗口找到maven目录，输入mvn clean compile也输出同样的错误，大致阅读了一下，说的是执行编译失败，"你是不是在JRE环境下运行而不是JDK？"，想了想，JDK已安装、各种环境变量配置没有问题，为什么会出现这种状况呢？寻思了一会儿，知道了原来Eclipse运行是需要一个JRE，而这个JRE并不是系统环境变量中的
javac目录下的JRE，而是JDK安装时候自带的JRE目录，此目录下并无
javac，故无法进行java的编译，问题找到了，下面说一下具体解决方案。
在Eclipse的菜单中，进入 Window > Preferences > Java > Installed JREs > Execution Environments，选择JavaSE-1.x, 在右侧选择JDK的安装目录（注意不要选择JRE的目录）.
然后，进行maven install的时候就会找得到javac了。
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