开发过程遇到的中文乱码问题如何解决

1. show variables like "%char%"; 

1. SET character_set_client='utf8'; 
2. SET character_set_connection='utf8'; 
3. SET character_set_results='utf8'; 

1. default-character-set=utf-8

1. jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8 

1. package com.oumyye.util; 
2.  
3. import java.io.IOException; 
4.  
5. import javax.servlet.Filter; 
6. import javax.servlet.FilterChain; 
7. import javax.servlet.FilterConfig; 
8. import javax.servlet.ServletException; 
9. import javax.servlet.ServletRequest; 
10. import javax.servlet.ServletResponse; 
11.  
12. public class CharacterEncodingFilter implements Filter{ 
13.  
14.     protected String encoding = null; 
15.     protected FilterConfig filterConfig = null; 
16.  
17.     public void init(FilterConfig filterConfig) throws ServletException { 
18.         this.filterConfig = filterConfig; 
19.         this.encoding = filterConfig.getInitParameter("encoding"); } public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { if (encoding != null) { request.setCharacterEncoding(encoding); response.setContentType("text/html; charset="+encoding); } chain.doFilter(request, response); } public void destroy() { this.encoding = null; this.filterConfig = null; 
20.     } 
21. } 

在web.xml中配置 

1. <?xml version="1.0" encoding="UTF-8"?> 
2. <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> 
3.   <display-name>0001web</display-name> 
4.   <!-- 中文编码过滤器 --> 
5.     <filter> 
6.         <filter-name>CharacterEncodingFilter</filter-name> 
7.         <filter-class>com.oumyye.util.CharacterEncodingFilter</filter-class> 
8.         <init-param> 
9.             <param-name>encoding</param-name> 
10.             <param-value>UTF-8</param-value> 
11.         </init-param> 
12.     </filter> 
13.     <filter-mapping> 
14.         <filter-name>CharacterEncodingFilter</filter-name> 
15.         <url-pattern>/*</url-pattern> 
16.         <dispatcher>REQUEST</dispatcher> 
17.         <dispatcher>FORWARD</dispatcher> 
18.     </filter-mapping> 

在表单中只能使用post传值,此方法对于get无效。

1. String newnewname=new String(name.getBytes("iso-8859-1"),"utf-8"))