Summary of ServletConfig in Java EE

In the servlet configuration file, you can use one or more < init param > tags to configure some initialization parameters for the servlet. After the servlet is configured with initialization parameters, the web container will automatically encapsulate these initialization parameters into the ServletConfig object when creating the servlet instance object, and pass the ServletConfig object to the servlet when calling the init method of the servlet. Furthermore, the programmer can get the initialization parameter information of the current servlet through the ServletConfig object. The example code is as follows: