springmvc post方式提交form时乱码问题——filter方式解决

最近遇到了一个奇怪的问题，就是编码问题。采用springmvc的时候，正常的get方式和ajax方式提交的时候，后台接收的数据都没有问题，但是采用form的post方式提交表单的时候出现了问题。发现后台接收不到数据。

在网上查了好久，各种方式试了个遍，最后还是添加filter的方式最奏效。下面是代码配置：

web.xml

[html]view plain copy
<!DOCTYPE web-app PUBLIC  
        "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"  
        "http://java.sun.com/dtd/web-app_2_3.dtd" >  
  
<web-app>  
    <display-name>Archetype Created Web Application</display-name>  
    <filter>  
        <filter-name>encodingFilter</filter-name>  
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>  
        <init-param>  
            <param-name>encoding</param-name>  
            <param-value>UTF-8</param-value>  
        </init-param>  
        <init-param>  
            <param-name>forceEncoding</param-name>  
            <param-value>true</param-value>  
        </init-param>  
    </filter>  
    <filter-mapping>  
        <filter-name>encodingFilter</filter-name>  
        <url-pattern>/*</url-pattern>  
    </filter-mapping>  
    <servlet>  
        <servlet-name>springmvc</servlet-name>  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
        <init-param>  
            <param-name>contextConfigLocation</param-name>  
            <param-value>/WEB-INF/springmvc-servlet.xml</param-value>  
        </init-param>  
        <load-on-startup>1</load-on-startup>  
    </servlet>  
    <servlet-mapping>  
        <servlet-name>springmvc</servlet-name>  
        <url-pattern>/</url-pattern>  
    </servlet-mapping>  
</web-app>  

springmvc-servlet.xml

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<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"  
       xmlns:context="http://www.springframework.org/schema/context"  
       xmlns:mvc="http://www.springframework.org/schema/mvc"  
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
       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/mvc  
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">  
  
    <context:component-scan base-package="com.xueyoucto.xueyou.controller"/>  
    <context:component-scan base-package="com.xueyoucto.xueyou.utils"/>  
  
    <mvc:annotation-driven/>  
    <mvc:resources location="/Component/" mapping="/Component/**"/>  
    <mvc:resources location="/img/" mapping="/img/**"/>  
    <mvc:resources location="/js/" mapping="/js/**"/>  
    <mvc:resources location="/css/" mapping="/css/**"/>  
</beans>  

hello.jsp

[plain]view plain copy
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" pageEncoding="utf-8" %>  
<html>  
<head>  
  <script type="text/javascript" src="${pageContext.request.contextPath}/Component/jquery-2.2.2.js"></script>  
  <script type="text/javascript" src="${pageContext.request.contextPath}/js/hello.js"></script>  
    <title>ccc</title>  
    <meta charset="UTF-8"/>  
</head>  
<body>  
<h1>hello</h1>  
<input id="testDownload" type="button" value="测试服务器响应">  
<input id="excelDownload" type="button" value="下载excel">  
<form action="${pageContext.request.contextPath}/TestJson/getJson" method="post">  
  <input name="param" value="就是我"/>  
  <input type="submit" value="提交">  
</form>  
</body>  
</html>  

TestJson.class

[java]view plain copy
package com.xueyoucto.xueyou.controller;  
  
import org.springframework.web.bind.annotation.RequestMapping;  
import org.springframework.web.bind.annotation.RequestMethod;  
import org.springframework.web.bind.annotation.RestController;  
  
import javax.servlet.http.HttpServletRequest;  
import java.io.UnsupportedEncodingException;  
import java.util.HashMap;  
import java.util.Map;  
  
/** 
 * Created by Administrator on 2016-09-06. 
 */  
@RestController  
@RequestMapping(value = "/TestJson",method = {RequestMethod.GET,RequestMethod.POST},produces = "application/json;charset=UTF-8")  
public class TestJson {  
    @RequestMapping(value = "/getJson")  
    public Map<String,Object> getJson(String param){  
        System.out.println(param);  
        Map<String,Object> resMap = new HashMap<String, Object>();  
        resMap.put("resCode","1");  
        resMap.put("resMessage","成功");  
        return resMap;  
    }  
  
    @RequestMapping(value = "/getJson2")  
    public Map<String,Object> inputCustomer(){  
        Map<String,Object> resMap = new HashMap<String, Object>();  
        resMap.put("ccc", 123123);  
        return resMap;  
    }  
}  

运行截图：

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springmvc post方式提交form时乱码问题——filter方式解决

springmvc post方式提交form时乱码问题——filter方式解决

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