解决eclipse Maven 主项目不能刷新maven

项目->.project -> 增加
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>job</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.m2e.core.maven2Builder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.m2e.core.maven2Nature</nature>
</natures>
</projectDescription>