@RequestMapping與@PostMapping等新注釋的curd操作

---操作  /user  為例

1--增(Post)

@RequestMapping

@RequestMapping(value = "/user",method = RequestMethod.POST)

@PostMapping

@PostMapping("/user")
    public String insert() {
        System.out.println("用戶新增");
        return "";
    }

2--刪(Delete)

@RequestMapping

@RequestMapping(value = "/user",method = RequestMethod.DELETE)

@DeleteMapping

@DeleteMapping("/user")
    public String delete() {
        System.out.println("用戶刪除");
        return "";
    }

3--改(Put/Patch)

　 　put        -----  　    是對整體的修改

　　patch     -----  　　 是對局部的修改

@RequestMapping

@RequestMapping(value = "/user",method = RequestMethod.PUT)

@PutMapping

@PutMapping("/user")
    public String update() {
        System.out.println("用戶更新");
        return "";
    }

@PatchMapping

@PtachMapping("/user")
    public String update() {
        System.out.println("用戶更新");
        return "";
    }

 

4--查(Get)

@RequestMapping

@RequestMapping(value = "/user",method = RequestMethod.GET)

@GetMapping

@GetMapping("/user")
    public String select() {
        System.out.println("用戶查詢");
        return "";
    }