中文字符过滤器这样写,对不对??

Question

package cn.wxg.user.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 CharsetEncodingFilter implements Filter { public void destroy() { } public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
request.setCharacterEncoding("gb2312");
chain.doFilter(request, response);
} public void init(FilterConfig arg0) throws ServletException { }}
web.xml中:
<filter>
   <filter-name>CharFilter</filter-name>
   <filter-class>cn.wxg.filter.CharFilter</filter-class>
</filter>
<filter-mapping>
   <filter-name>CharFilter</filter-name>
   <url-pattern>/*</url-pattern>
</filter-mapping>

Answer 1

字体有点小.
我就是在 doFilter 方法下-->写了:
request.setCharacterEncoding("gb2312");
chain.doFilter(request, response); 

另一个问题:
     在struts中怎样写呢?
     我将上面的代码,放在struts中,web.xml中总是报错.为什么呢??

Answer 2

<web-app> <filter>
<filter-name>CharsetEncodingFilter</filter-name>
<filter-class>cn.wxg.filter.CharsetEncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CharsetEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
...<web-app>
<filter>
<filter>紧挨着<web-app> ,否则,报错...

Answer 3

filter-class 包名和类名都配置错了，应为 cn.wxg.user.filter.CharsetEncodingFilter过滤器与 Struts 没有任何关系，所有的请求都会被这个过滤器给拦截进行处理的。PS：过滤器中最好也加上：
response.setCharacterEncoding("gb2312");

Answer 4

override
 public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {
        request.setCharacterEncoding("gb2312");
        chain.doFilter(request, response);        
    }