refreshhandler.java

来自「JAVA Servlet2.3外文书籍源码」· Java 代码 · 共 45 行

package firewall.server;

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

import firewall.common.*;

import java.io.*;

/**
 * Title:        RefreshHandler
 * Description:  Subclass of RequestHandler to process Refresh requests
 * Copyright:    Copyright (c) 2001
 * Company:
 * @author Andrew Harbourne-Thomas
 * @version 1.0
 */
public class RefreshHandler extends RequestHandler {

  /**
   * Perform the processing and response to the client request
   *
   * @param baseRequest BaseRequest or subclass containing
   *        information relevent to the request
   */
  public void respond(BaseRequest baseRequest) {
    //Wrap file list for directory
    FileList fileList = new FileList(BaseRequest.REFRESH, getFileList());

    //write the object out to the client
    try {
      if (fileList != null) {
        setStatusCode(HttpServletResponse.SC_OK);
        FileValidator.cleanFileList(fileList.getFileList());
        sendSerializedObject(fileList);
      }
      else {
        sendError(HttpServletResponse.SC_NOT_FOUND, "Directory not found");
      }
    }
    catch (IOException e) {
      e.printStackTrace();
    }
  }
}