Spring mvc rest 风格实例

亦凉 2022-07-26 06:08 235阅读 0赞

1.web.xml中添加filter过滤器 HiddenHttpMethodFilter 这个作用在于将rest类型的请求转化为标准的http类型 put delete 方法

web.xml

<?xml version="1.0" encoding="UTF-8"?>
    <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    
    
    
        <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>
        <servlet>
            <servlet-name>springmvc-1</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            
    
            
            
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>springmvc-1</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    </web-app>

1.  rest的get和post跟http的写法一样。  
    put 和 delete 的请求需要在form表单中添加一个 name=”\_method” value=”put/delete” 的隐藏域

Rest.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
        pageEncoding="utf-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Insert title here</title>
    </head>
    <body>
        ================get=========================</br>
        <form action="testRest/testRestGet/123" method="get">
            姓名：<input name="username" type="text"></br> 密码 ：<input
                name="password" type="password"></br> 性别 ：男<input name="sex"
                type="radio" value="男"> 女<input name="sex" type="radio"
                value="女"></br> <input type="reset" name="reset" value="清空">
            <input type="submit" name="submit" value="rest_get">
        </form>         
        ================post=========================</br>
        <form action="testRest/testRestPost" method="POST">
            姓名：<input name="username" type="text"></br> 密码 ：<input
                name="password" type="password"></br> 性别 ：男<input name="sex"
                type="radio" value="男"> 女<input name="sex" type="radio"
                value="女"></br> <input type="reset" name="reset" value="清空">
            <input type="submit" name="submit" value="rest_post">
        </form> 
    
        ================put=========================</br>
        <form action="testRest/testRestPut/232" method="post">
                <input type="hidden" name="_method" value="put">
            姓名：<input name="username" type="text"></br> 密码 ：<input
                name="password" type="password"></br> 性别 ：男<input name="sex"
                type="radio" value="男"> 女<input name="sex" type="radio"
                value="女"></br> <input type="reset" name="reset" value="清空">
            <input type="submit" name="submit" value="rest_put">
        </form>     
    
        ================delete=========================</br>
        <form action="testRest/testRestDelete/232" method="post">
                <input type="hidden" name="_method" value="delete">
            姓名：<input name="username" type="text"></br> 密码 ：<input
                name="password" type="password"></br> 性别 ：男<input name="sex"
                type="radio" value="男"> 女<input name="sex" type="radio"
                value="女"></br> <input type="reset" name="reset" value="清空">
            <input type="submit" name="submit" value="rest_delete">
        </form>     
    
    </body>
    </html>

springmvc-1-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
      
        <context:component-scan base-package="com/ztc/controller"></context:component-scan>
      
      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/view/"></property>
        <property name="suffix" value=".jsp"></property>
      </bean>
    
    </beans>

1.  在controller中使用@PathVariable 注解  
    分别为

TestRest.java

package com.ztc.controller;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    /** * * @author jack * 新增 /order post * 删除/order/1 delete delete?id=1 * 修改/order/1 put update?id=1 * 查找/order get update?id=1 * 如何发送rest put delete请求？ * 1.需要配置 HiddenHttpMethodFilter * 2. 需要发送POST 请求 * 3.需要发送POST请求时携带一个 name="_method" value="put/delete" 的隐藏域 * 在SpringMVC 的目标方法中如何得到id 呢？ * 使用@PathVariable 注解 * */
    @Controller
    @RequestMapping("/testRest")
    public class TestRest { 
        private static final String  SUCCESS ="success";
    
        /** * GET 查询 * @param id * @return */
        @RequestMapping("/testRestGet/{id}")
        public String testRestGet(@PathVariable("id") Integer id){
            System.out.println("测试REST风格的GET请求 "+id);
            return SUCCESS;
        }
    
        /** * Delete 删除 * @param id * @return */
        @RequestMapping(value="/testRestDelete/{id}",method=RequestMethod.DELETE)
        public String testRestDelete(@PathVariable("id") Integer id){
            System.out.println("测试REST风格的Delete请求 "+id);
            return SUCCESS;
        }
    
        /** * PUT 修改 * @param id * @return */
        @RequestMapping(value="/testRestPut/{id}",method=RequestMethod.PUT)
        public String testRestPut(@PathVariable("id") Integer id){
            System.out.println("测试REST风格的Put请求 "+id);
            return SUCCESS;
        }
    
        /** * POST 新增 * @param id * @return */
        @RequestMapping(value = "/testRestPost",method=RequestMethod.POST)
        public String testRestPost(){
            System.out.println("测试REST风格的POST请求 ");
            return SUCCESS;
        }   
    
    }

MyEclipse 控制台打印信息

测试REST风格的GET请求 123
    测试REST风格的POST请求 
    测试REST风格的Put请求 232
    测试REST风格的Delete请求 232