View the source code of Spring.Jar in Myeclipse

In Myeclipse, when you want to view the source code of a method, move the mouse arrow to the method name and hold down the Ctrl key , then Open Declaration and Open Implementation will be displayed under the method name. At this time , the mouse click on Open Declaration will jump to the method declaration position, and the stand-alone Open Implementation will jump to the method function implementation position. 

If the corresponding Javadoc is not added to the Jar package corresponding to the method , the above operation will jump to the following page: 
 
In order to view the source code, the source code file needs to be added at this time, so you need to click Attach Source and you will enter the following page. This page: 
 
At this time, you can see two major options, WorkSpace Location and External Location . The difference between these two options is that if the Javadoc you downloaded is saved in the workspace, use the first one; if it is in other locations, use the first one. Choose the second one. Finally, click OK to see the source code. 
Summary: This method can only see the source code of one method.

Tip: The source code above Spring 4.0 is in lib in release.dist.