一、頁面編碼

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>

二、URL中的亂碼

　　改tomcat中server.xml中Connector的port=“8080”，加上一個 URIEncoding=”utf-8”

三、配置過濾器，指定所有請求的編碼

　　（1）配置spring的編碼過濾器，為了防止spring中post方式提交的時候中文亂碼，方法：修改web.xml文件，添加spring的編碼過濾器

  <!-- 配置編碼方式過濾器,註意一點:要配置在所有過濾器的前面 -->
  <filter>
    <filter-name>CharacterEncodingFilter</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>
  </filter>
  <filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*
 
</url-pattern>
  </filter-mapping>

　　（2）配置編碼過濾器，方法：先創建filter類，再修改web.xml文件，註意的是放在spring的編碼過濾器之後

　　filter類：

package com.qiyuan.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
 
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class EncoidingFilter implements Filter {

    private String encoding="";
    @Override
    public void destroy() {
        // TODO Auto-generated method stub

    }

    
    //過濾方法  是否往下執行
    @Override
    public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain chain)
            throws IOException, ServletException {
        HttpServletRequest request=(HttpServletRequest)arg0;
        HttpServletResponse response=(HttpServletResponse)arg1;
        
        request.setCharacterEncoding(encoding);
        response.setCharacterEncoding(encoding);

        //過濾通行證
        chain.doFilter(request, response);
    }

    //根據web.xml文件的配置進行初始化  
    @Override
    public void init(FilterConfig arg0) throws ServletException {
        this.encoding = arg0.getInitParameter("Encoding");
        
    }

}

　　修改web.xml，添加如下配置：

<!-- 配置編碼過濾 -->
   <filter>
    <filter-name>EncoidingFilter</filter-name>
    <filter-class>com.qiyuan.filter.EncoidingFilter</filter-class>
    
    <init-param>
       <param-name>Encoding</param-name>
       <param-value>utf-8</param-value>
    </init-param>
  </filter>
  
  <filter-mapping>
       <filter-name>EncoidingFilter</filter-name>
       <url-pattern>/*</url-pattern>
  </filter-mapping> 

四、文件編碼

　　將文件另存為utf-8格式

五、數據庫編碼

　　連接字符串指定編碼格式

public static String URL="jdbc:mysql://127.0.0.1:3306/mvcdb?useUnicode=true&characterEncoding=UTF-8"

　　創建數據庫的時候指定utf-8編碼格式

六、其他參考資料

　　http://www.cnblogs.com/javahr/p/8268983.html

徹底解決springMVC中文亂碼