springboot注解及GET、POST接口写法

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

@RequestMapping (value="/hello", method= RequestMethod.GET)
    public String hello(String name){
        return "123"+name;
    }

@RequestMapping (value="/hello", method= RequestMethod.GET)
    public String hello(String name){
        return "123"+name;
    }

@RequestMapping (value="/hello2", method= RequestMethod.GET)
    public String hello2(@RequestParam(value ="nickname",required = false) String name){
        return "123"+name;
    }

@RequestMapping(value = "/post1", method = RequestMethod.POST)
    public String post1(){
        return "hello post";
    }

@RequestMapping(value = "/post2", method = RequestMethod.POST)
    public String post2(String username, String password){
        return username+"-"+password;
    }

@RequestMapping(value = "/post3",method = RequestMethod.POST)
    public String post3(User user){
        System.out.println(user);
        return "post";
    }

@RequestMapping(value = "/post34",method = RequestMethod.POST)
    public String post4(@RequestBody User user){
        System.out.println(user);
        return "post";
    }