@Controller
@RequestMapping(path = "/role") // 一級請求路徑
public class RoleController {
    /**
     * /role/save
     * method="當前方法允許請求方式能訪問"
     * params="請求路徑上傳參數(shù)"
     * @return
     */
   @RequestMapping(path = "/save",method = {RequestMethod.GET})
    public String save(){
        System.out.println("保存角色...");
        return "suc";
    }
    @RequestMapping(value = "/delete")
    public String delete(){
        System.out.println("刪除角色...");
        return "suc";
    }
}

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
@Controller
@RequestMapping("/dept")
public class DeptController {
    @RequestMapping("/save")
    public String save(@RequestParam(value = "username",required = false) String name){
        System.out.println(name);
        return "suc";
    }
}

    @RequestMapping("/save2")
    public String save2(@RequestBody Student student){
        System.out.println(body);
        return "suc";
    }

//映射訪問路徑
@RequestMapping("/commit.do/{p1}/{p2}")
public String index(@PathVariable int p1, @PathVariable String p2, Model model){
    String result = p1+p2;
    //Spring MVC會自動實例化一個Model對象用于向視圖中傳值
    model.addAttribute("msg", "結(jié)果："+result);
    //返回視圖位置
    return "suc";
}