struts中文过滤器

最新推荐文章于 2023-10-09 23:05:45 发布

最新推荐文章于 2023-10-09 23:05:45 发布 · 166 阅读

文章标签：

#Struts #Servlet #Web #JSP #XML

本文介绍了一个自定义的中文过滤器实现方法，通过继承HttpServlet并实现Filter接口来完成。该过滤器可以从WEB.xml中获取编码格式，并应用于所有的HTTP请求。

//生成自己的过滤器

package org.perfect.struts.filters;

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;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ChineseFilter extends HttpServlet implements Filter {

private FilterConfig filterConfig;

      public void init(FilterConfig filterConfig) throws ServletException {
          this.filterConfig = filterConfig;
      }

      public void doFilter(ServletRequest request, ServletResponse response,
              FilterChain filterChain) {
          try {

              String encoding=filterConfig.getInitParameter("encoding");//从WEB.xml配置文件中取出参数，这样我们可以通过配置修改编码格式．
              request.setCharacterEncoding(encoding);//设置请求的编码格式
              System.out.println(encoding);
              filterChain.doFilter(request, response);
          } catch (ServletException sx) {
              filterConfig.getServletContext().log(sx.getMessage());
          } catch (IOException iox) {
              filterConfig.getServletContext().log(iox.getMessage());
          }
      }

      public void destroy() {
      }

      protected void doGet(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException {
          super.doGet(arg0, arg1);
      }

      protected void doPost(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException {
          super.doPost(arg0, arg1);
      }
}

===============================

在web.xml中做结扎.

        <filter>
          <filter-name>ChineseFilter</filter-name>
          <filter-class>org.perfect.struts.filters.ChineseFilter</filter-class>
          <init-param>
              <param-name>encoding</param-name>
              <param-value>GBK</param-value>
          </init-param>
      </filter>
      <filter-mapping>
          <filter-name>ChineseFilter</filter-name>
          <url-pattern>/*</url-pattern>
      </filter-mapping>

=================================

jsp中

<%@ page contentType="text/html; charset=GBK" language="java" %>