charset.java

网上购书系统

package bussiness;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;

public class charset extends HttpServlet implements Filter {
    private FilterConfig filterConfig;
    //Handle the passed-in FilterConfig
    public void init(FilterConfig filterConfig) throws ServletException {
        this.filterConfig = filterConfig;
    }

    //Process the request/response pair
    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain filterChain) {
        try {
            String charset=filterConfig.getInitParameter("charset");
            HttpServletRequest req=(HttpServletRequest) request;
            HttpServletResponse resp=(HttpServletResponse) response;
            req.setCharacterEncoding(charset);
            resp.setCharacterEncoding(charset);
            filterChain.doFilter(req, resp);
        } catch (ServletException sx) {
            filterConfig.getServletContext().log(sx.getMessage());
        } catch (IOException iox) {
            filterConfig.getServletContext().log(iox.getMessage());
        }
    }

    //Clean up resources
    public void destroy() {
    }
}