报错:this compilation unit is not on the build path of a Java project
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2022-06-23 15:02:48
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this compilation unit is not on the build path of a Java project
从SVN上面检出了一个项目,在写代码的时候使用自动提示就报“this compilation unit is not on the build path of a Java project”错误,如图。
查看Build Path 时也没有信息
原因是检出的项目缺失了Java编译器。
解决方案如下:
关闭eclipse
找到项目文件夹内的.project文件
在文件内增加Java编译器相关内容:
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>检出的项目名称</name>
<comment></comment>
<projects>
</projects>
<!-- 检查有没有javabuilder,没有的话添加-->
<buildSpec>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<!-- 检查有没有javanature,没有的话添加-->
<nature>org.eclipse.jdt.core.javanature</nature>
<nature>org.apache.ivyde.eclipse.ivynature</nature>
</natures>
</projectDescription>
原项目project文件:
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>demo</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>
修改后文件:
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>demo</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.m2e.core.maven2Builder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.jdt.core.javanature</nature>
<nature>org.eclipse.m2e.core.maven2Nature</nature>
</natures>
</projectDescription>
4.重开编译器项目即可重新编译为正常项目
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