First, I downloaded the java ee create java web project
After jdk, tomcat configured
Found in the menu bar Window in eclipse
New Project
WebContent folder in the project folder right-click on a new jsp file
Rename the file to the server by default index.jsp to open it.
Right-click the blank space
Direct finish
Fastjson transfer package
Right-click on the new project folder
Copy to folder fastjson.jar
a new java class projects
