encodingfilter.java

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package com.laoer.bbscs.servlet;

import javax.servlet.ServletException;
import javax.servlet.ServletContext;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.http.HttpSession;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * <p>Title: 天乙社区V5.0</p>
 * <p>Description: BBS-CS天乙社区V5.0</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: laoer.com</p>
 * @author 龚天乙
 * @version 5.0
 */

public class EncodingFilter
    implements Filter {

  private FilterConfig config = null;
  // default to ASCII
  private String targetEncoding = "ASCII";

  public void init(FilterConfig config) throws ServletException {
    this.config = config;
    this.targetEncoding = config.getInitParameter("encoding");
  }

  public void destroy() {
    config = null;
    targetEncoding = null;
  }

  public void doFilter(ServletRequest srequest, ServletResponse sresponse,
                       FilterChain chain) throws IOException, ServletException {

    HttpServletRequest request = (HttpServletRequest) srequest;
    request.setCharacterEncoding(targetEncoding);
    // move on to the next
    chain.doFilter(srequest, sresponse);
  }

}