encodingfilter.java~2~

Spring +Web 的完整 MyEclipse 项目源码,使用者可以作为入门材料可以在此基础上深入学习

package login;

import javax.servlet.Filter;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.FilterChain;
import java.io.IOException;

public class EncodingFilter implements Filter {
  public EncodingFilter() {
    try {
      jbInit();
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }

  private FilterConfig config = null;
  private String trargetEncoding = "ASCII";

  // GBK  UTF-8

  public void init(FilterConfig config) throws javax.servlet.ServletException {

     this.config = config;

     this.trargetEncoding = config.getInitParameter("encoding");

  }


  public void doFilter(ServletRequest request,
                       ServletResponse response,
                       FilterChain chain)
      throws java.io.IOException, javax.servlet.ServletException {

       System.out.println("targetEncoding :" + trargetEncoding + "\n");

       request.setCharacterEncoding(trargetEncoding);

       chain.doFilter(request,response);


  }


  public void destroy() {

    config = null;

    trargetEncoding = null;
  }

  private void jbInit() throws Exception {
  }

}