jsp 中文乱码之过滤器

这两天做一个项目jsp+hibernate+mysql,在查询的时候中文正常，但是插入中文数据的时候乱码，于是在网上找到用过滤器这个方法进行解决，jsp中用GB2312,MYSQL中也改为gb2312.写个过滤器如下：

 

package filter;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class CharacterEncodingFilter implements Filter...{
        private FilterConfig filterConfig;
        private String encoding=null;
       
       public void init(FilterConfig filterConfig)...{
          this.filterConfig=filterConfig;
          encoding=filterConfig.getInitParameter("encoding");
       }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException ...{
                request.setCharacterEncoding(encoding);
                chain.doFilter(request,response);
    }

    public void destroy() ...{
        
    }
    
}

 在web.xml中加入filter：

    <filter>
        <filter-name>setcharacterencodingfilter</filter-name>
        <filter-class>filter.CharacterEncodingFilter</filter-class>
        <init-param>
          <param-name>encoding</param-name>
          <param-value>GB2312</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>setcharacterencodingfilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

这样即可解决jsp中的中文乱码问题。