一个filter疑问

Question

java EE 书的第五章的bbs，web.xml中有： <filter>
  <filter-name>charsetEncodingFilter</filter-name>
  <filter-class>j2eebbs.util.EncodingFilter</filter-class>
  <init-param>
   <param-name>encoding</param-name>
   <param-value>UTF-8</param-value>
  </init-param>
 </filter>但是，我找不到j2eebbs.util.EncodingFilte这个类呢！运行报错：严重: Exception starting filter charsetEncodingFilter
java.lang.ClassNotFoundException: j2eebbs.util.EncodingFilter您看看是什么原因呢？谢谢了

Answer 1

没这个类，自己写一个呗！ 一样能解决乱码问题
public class EncodingFilter implements Filter { 
private FilterConfig config = null; 
private String targetEncoding = "ASCII"; public EncodingFilter() { 
} 
public void init(FilterConfig filterconfig) throws javax.servlet.ServletException { 
this.config = filterconfig; 
this.targetEncoding = config.getInitParameter("encoding"); 
} 
public void doFilter(ServletRequest srequest, ServletResponse sresponse, FilterChain filterchain) throws java.io.IOException, javax.servlet.ServletException { 
HttpServletRequest request = (HttpServletRequest)srequest; //set the encoding 
request.setCharacterEncoding(this.targetEncoding); //move to next 
filterchain.doFilter(srequest,sresponse); 
} 
public void destroy() { 
this.config = null; 
this.targetEncoding = null; 
} } 

Answer 2

j2eebbs.util.EncodingFilter这个类应该是项目中的吧  楼主仔细找找啊

Answer 3

这个类实现Filter接口，然后在在doFileter里写上request.setCharacterEncoding(this.getInitParameter("encoding"));
chain.doFilter(request,response);

Answer 4

packge j2eebbs.util.EncodingFilter
import java.io.IOException;import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;import org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter;public class FckEditorPassFilter extends .EncodingFilter { @Override //重写StrutsPrepareAndExecuteFilter类的doFilter方法
public void doFilter(ServletRequest req, ServletResponse res,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
if ("/fckeditor/editor/filemanager/connectors".equals(request
.getServletPath())) {
chain.doFilter(req, res);
} else {
super.doFilter(req, res, chain);
}
}}