eclipse下debug java web项目时遇到the source attachment does not contain the source for the file JspWriterImpl.class

在eclipse平台下,想debug一个web项目,查找jsp文件中为什么js程序段得不到执行,
当使用step into 执行登录 时,遇到source not found
the source attachment does not contain the source for the file JspWriterImpl.class 的错误。我看了下JspWriterImpl.class 文件在jasper.jar包下面。这个jar是tomcat lib
目录下的标准jar,怎么会找不到源码文件,或者还要求去找源码文件呢?

https://www.cnblogs.com/lezhifang/p/6662415.html