Reference: https: //blog.csdn.net/a532672728/article/details/78057218
get method:
1. http://localhost:8080/0919/test1?name=xxx&pwd=yyy
Method One: String test String name, string pwd) directly injected into the match name
Method two: the String test (User user) // property name matches the user object, the automatic injector
方法三：String test （HttpServletRequest request）
{
String name=request.getParameter("name");
String pwd=request.getParameter("pwd");
}
Method four: RequestParam fact, and as a method, not on the automatic matching, manual matching
String test（@RequestParam（“name”） aaa，@RequestParam（“pwd”），bbb）
2. http://localhost:8080/0919/test/xxx/yyy
Method 1: PathVariable: The above is not the same, is above the query string, this routing is used. This method and the four kinds can be mixed.
Written @ RequestMapping = {value = / test / sss / {a} / {b}} routing
String test (@PathVariable a String Name, @ PathVariable b String Pwd)
{
}
post method: Reference herein: https://blog.csdn.net/suki_rong/article/details/80445880