Spring: HiddenHttpMethodFilter的用法
作用：将html表单提交的post请求转换为put请求或delete请求发给接口。
html不支持put和delete.
一、web.xml中配置过滤器
<filter><filter-name>HiddenHttpMethodFilter</filter-name><filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class></filter><filter-mapping><filter-name>HiddenHttpMethodFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping>
二、表单增加一个名为"_method"的隐藏域，值为put或delete
<%--Created by IntelliJ IDEA.User: amadeusDate: 2023/8/27Time: 16:39To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html><head><title>$Title$</title></head><body>Hi world!<form action="/springmvc2028/hi3" method="post"><input type="submit" value="submit"/><input type="hidden" name="_method" value="put"/></form></body>
</html>