Create a new Javaweb project in Eclipse to see the source code for some classes

Most of the online search said under the project to choose Properties, under the Java Build Path add Externaljar Selection, plus tomcat-"Lib Servlet-api.jar, or through the current page, Move the mouse to a class, F2 or mouse click to locate the pop-up window, and then click Open Declaration jump to another page, select the Attach button, select the file path, navigate to Tomcat-" Lib Servlet-api.jar; this way is just Java EE under the ordinary class can, but I want to find the servlet under ServletRequest or servletresponse source code, I downloaded the javax.zip file in Csdn, and then follow the ATTAC H mode load the file, finally ok!

Create a new Javaweb project in Eclipse to see the source code for some classes