Java Spring Boot请求方式与请求映射过程分析

/getUser   获取用户
/deleteUser 删除用户
/updateUser  修改用户
/saveUser 保存用户

	@RequestMapping(value = "/getUser", method = RequestMethod.GET)
    public String getUser() {
        return "GET";
    }
    @RequestMapping(value = "/deleteUser", method = RequestMethod.POST)
    public String deleteUser() {
        return "POST";
    }
    @RequestMapping(value = "/updateUser", method = RequestMethod.POST)
    public String updateUser() {
        return "POST";
    }
    @RequestMapping(value = "/saveUser", method = RequestMethod.POST)
    public String saveUser() {
        return "POST";
    }

 /user    GET-获取用户    DELETE-删除用户     PUT-修改用户      POST-保存用户

    @GetMapping("/user")
    public String getUser() {
        return "GET";
    }
    @PostMapping("/user")
    public String saveUser() {
        return "POST";
    }
    @PutMapping("/user")
    public String putUser() {
        return "PUT";
    }
    @DeleteMapping("/user")
    public String deleteUser() {
        return "DELETE";
    }

<form action="/user" method="post">
	<input name="_method" type="hidden" value="delete"/>
    <input value="REST提交" type="submit"/>
</form>

spring:
  mvc:
    hiddenmethod:
      filter:
        enabled: true

   @Bean
    public HiddenHttpMethodFilter hiddenHttpMethodFilter() {
        HiddenHttpMethodFilter methodFilter = new HiddenHttpMethodFilter();
        methodFilter.setMethodParam("_mymethod");
        return methodFilter;
    }