编码问题

Posted 2020-10-27 Keeloong

1.从谷歌浏览器传入的数据，出现中文乱码；

在别的浏览器中没有出现这个问题；

 我的最后解决：将提交的方式修改为POST并创建过滤器解决！

package com.ch.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;

public class EncodeFilter implements Filter {

    @Override
    public void destroy() {
        // TODO Auto-generated method stub
        
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {

         request.setCharacterEncoding("utf-8");  
         chain.doFilter(request, response);  
        
        
    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {
        // TODO Auto-generated method stub
        
    }

}

在web.xml中的配置

<!-- 过滤器配置 -->
    <filter>
        <filter-name>encorder</filter-name>
        <filter-class>com.ch.filter.EncodeFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>encorder</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

 

2.解决乱码的几种方式

　　（1）在web.xml中进行配置

<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>  
        <init-param>  
            <param-name>forceEncoding</param-name>  
            <param-value>true</param-value>  
        </init-param>  
    </filter>  
    <filter-mapping>  
        <filter-name>characterEncodingFilter</filter-name>  
        <url-pattern>/*</url-pattern>  
    </filter-mapping> 

　　（2）在struts.xml中进行配置

<constant name="struts.i18n.encoding" value="UTF-8"/>

　　（3）在Tomcat中进行配置

<Connector port="8080" maxThreads="150" minSpareThreads="25" maxSpareThreads="75" enableLookups="false" redirectPort="8443" acceptCount="100" debug="0" connectionTimeout="20000" disableUploadTimeout="true" URIEncoding="UTF-8"/>

　　　(4)通过request和response

request.setCharacterEncoding("utf-8");        //对GET方式提交的数据无效
response.setContentType("text/html;charset=utf-8");

　　（5）处理GET请求的数据

String name = request.getParameter("userName");
name=new String(userName.getBytes("ISO-8859-1","utf-8"))

　　（6）对于html和JSP

HTML

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

JSP

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>