SPRINGMVC GET request and its request address notation

Today, you need to write an interface, after writing, testing the line has been reported 404 errors, do not know why the error. Should be a GET request address problem, GET request has two parameters, the time to change to a parameter is good, perhaps that way is not suitable for writing two parameters of Get request it.

Mode one: GET request a parameter

@RequestMapping ("/testpathvariable/{id}") public String testpathvariable (@PathVariable (value= " ID ") Integer ID) {    System.out.println (" testpathvariable: "+ ID);     return　　　　　　　　SUCCESS;} 

URL Request Address: http://localhost:8080/testPathVariable/001

Page output: testpatvariable:001

Mode two: Get request multiple parameters (2)

@RequestMapping (value= "/testrequestparam") Public
@RequestParam (value= "age", required=falseint -age ) {    System.out.println (" Testrequestparam "+" Username: "+ username +" Age: "+ age);     return SUCCESS;}

URL Request Address: http://localhost:8080/testRequestParam?username=jackie&age=12

Page output: Teatrequestparam username:jackie age:12

Spring annotations

1. How spring MVC matches the request path

@RequestMapping are used to map requests, such as GET requests, post requests, or restful and non-restful styles.

This annotation can be used on a class or on a method, if used on a class, to represent the parent path of all methods in that class.

2. How spring MVC gets the requested parameters

@PathVariable This annotation is used to map placeholders for bindings in the request URL. By @pathvariable, you can bind the parameters of placeholders in URLs to the arguments of the controller processing method.

@RequestParam The annotation is also used to get the request parameters.

　　　　

SPRINGMVC GET request and its request address notation