Spring Boot如何使用HiddenHttpMethodFilter [英] Spring Boot how to use HiddenHttpMethodFilter

问题描述

众所周知，表单仅支持 GET 或 POST 方法，如下所示:

As we all know, forms only support GET or POST methods, like this:

<form method="[GET|POST]" action="/user/create">

如果我们的控制器具有 PUT 映射，则会出现405错误，这意味着我们只能使用 GET 或 POST ，而不能使用 PUT .

If our controller has a PUT mapping, we get a 405 error, which means we can only use GET or POST but not PUT.

public class UserController {

    @Autowired
    private UserService userService;

    @RequestMapping(value = "/create", method = RequestMethod.PUT)
    public ModelAndView createUser(@ModelAttribute("user") Users user, BindingResult bindingResult){
        ModelAndView mv = new ModelAndView("list");
        // do something...
        return mv;
    }
}

在Spring MVC中，我们可以解决此问题:

In spring MVC, we can solve this problem:

首先，创建一个隐藏字段，如下所示:

First, create a hidden field like this:

<form method="[GET|POST]" action="/user/create">
    <input type="hidden" name="_method" value="put"/>

第二，添加一个过滤器

<filter>  
    <filter-name>HiddenHttpMethodFilter</filter-name>  
    <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>  
</filter>  

<filter-mapping>  
    <filter-name>HiddenHttpMethodFilter</filter-name>  
    <servlet-name>springmvc</servlet-name>  
</filter-mapping>     

通过这种方式，我们可以使用 PUT 方法.

In this way, we can use the PUT method.

但是如何在Spring Boot中做到这一点?我知道Spring Boot有一个名为 WebMvcAutoConfiguration 的类，该类拥有方法 hiddenHttpMethodFilter ，但是如何使用该类?

But how can I do it in Spring Boot? I know Spring Boot have a class named WebMvcAutoConfiguration which owns a method hiddenHttpMethodFilter, but how can I use the class?

推荐答案

将以下内容添加到您的 application.properties :

Add the following to your application.properties:

spring.mvc.hiddenmethod.filter.enabled=true

这将自动配置 HiddenHttpMethodFilter .

接下来，在表单上使用 th:method = DELETE 让Thymeleaf自动添加隐藏字段.

Next, use th:method=DELETE on the form to have Thymeleaf add the hidden field automatically.

(Spring Boot< 2.2始终注册过滤器，对于Spring Boot 2.2或更高版本，您需要设置属性)

(Spring Boot < 2.2 always registers the filter, for Spring Boot 2.2 or higher you need to set the property)

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