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：

packagefilter;

importjavax.servlet.*;
importjavax.servlet.http.*;
importjava.io.*;
publicclassCharacterEncodingFilterimplementsFilter...{
privateFilterConfigfilterConfig;
privateStringencoding=null;

publicvoidinit(FilterConfigfilterConfig)...{
this.filterConfig=filterConfig;
encoding=filterConfig.getInitParameter("encoding");
}

publicvoiddoFilter(ServletRequestrequest,ServletResponseresponse,FilterChainchain)throwsIOException,ServletException...{
request.setCharacterEncoding(encoding);
chain.doFilter(request,response);
}

publicvoiddestroy()...{

}

}

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。