彻底解决springMVC中文乱码

转载：https://www.cnblogs.com/javahr/p/8269669.html

一、页面编码

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

 

二、URL中的乱码

　　改tomcat中server.xml中Connector的port=“8080”，加上一个 URIEncoding=”utf-8”

 

三、配置过滤器，指定所有请求的编码

　　（1）配置spring的编码过滤器，为了防止spring中post方式提交的时候中文乱码，方法：修改web.xml文件，添加spring的编码过滤器

<!-- 配置编码方式过滤器,注意一点:要配置在所有过滤器的前面 -->
<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>

  <!-- 配置编码方式过滤器,注意一点:要配置在所有过滤器的前面 -->
  <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）配置编码过滤器，方法：先创建filter类，再修改web.xml文件，注意的是放在spring的编码过滤器之后

　　filter类：

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

}

//过滤方法 是否往下执行
@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);

//过滤通行证
chain.doFilter(request, response);
}

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

}

}

　　修改web.xml，添加如下配置：

<!-- 配置编码过滤 -->
<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>

<!-- 配置编码过滤 -->
   <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、文件编码

　　将文件另存为utf-8格式

 

五、数据库编码

　　连接字符串指定编码格式

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

　　创建数据库的时候指定utf-8编码格式

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