springmvc RestFul风格

参考：https://www.kuangstudy.com/bbs/1422050997429198850

以前：

web输入: /add?a=1&b=5

package com.kuang.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class testController {
    @RequestMapping("/add")
    public String test1(int a, int b , Model model){
        int res=a+b;
        model.addAttribute("msg","结果为"+res);
        return "hello";
    }
}

现在：

http://localhost:8080/add/8/9

package com.kuang.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class testController {
    @RequestMapping("/add/{a}/{b}")
    public String test1(@PathVariable int a, @PathVariable int b , Model model){
        int res=a+b;
        model.addAttribute("msg","结果为"+res);
        return "hello";
    }
}

限定方法：

@RequestMapping(value="/add/{a}/{b}",method = RequestMethod.GET)

和

@GetMapping("/add/{a}/{b}")一样，限定方法，其他方法也是同样的道理