This compilation unit is not on the build path of a Java project 解决办法​

把项目导入STS(基于Eclipse)时,项目出现问题,

代码提示出不来,而且所有的类用Ctrl+click的方法也无跳转。

有提示如图错误

搜索发现,大致是因为项目文件缺失。

解决办法:找到项目根目录下的.project文件,修改,加入jdt支持,我的项目修改后如下所示↓

<?xml version="1.0" encoding="UTF-8"?>

<projectDescription>

<name>framework</name>

<comment></comment>

<projects>

</projects>

<buildSpec>

<buildCommand>

<name>org.eclipse.jdt.core.javabuilder</name>

<arguments>

</arguments>

</buildCommand>

</buildSpec>

<natures>

<nature>org.eclipse.jdt.core.javanature</nature>

</natures>

</projectDescription>

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