Struts中利用filter解决中文乱码问题

JSP页面编码 gb2312

MySql数据库端编码 utf-8

通过一下配置，解决中文乱码问题

1.定义filter类    可以根据需要修改过滤的编码

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 CharacterEncodingFilter  implements Filter {
    public void destroy(){   
    }   
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,ServletException  
    {   
//     request.setCharacterEncoding("utf-8");  
     request.setCharacterEncoding("gb2312");  
     chain.doFilter(request, response);  
    }   
    //@Override 
    public void init(FilterConfig arg0) throws ServletException {  
    }  

}

2.配置相应web.xml   在web.xml中插入

  <filter> 
  <filter-name>characterEncoding</filter-name> 
  <filter-class>util.CharacterEncodingFilter</filter-class> 
  </filter> 
  <filter-mapping> 
  <filter-name>characterEncoding</filter-name> 
  <url-pattern>/*</url-pattern> 
  </filter-mapping>