postlistcontroller.java

java关于模板函数的程序

package bbs;

// Imports
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;


// Import for commands used by this class
import bbs.PostListCommand;

public class PostListController
  extends javax.servlet.http.HttpServlet
  implements Serializable {

  /**
   * DoGet
   * Pass get requests through to PerformTask
   */
  public void doGet(
    HttpServletRequest request,
    HttpServletResponse response)
    throws javax.servlet.ServletException, java.io.IOException {
      performTask(request, response);
  }
/**********************************************************
* Process incoming requests for information
* 
* @param request encapsulates the request to the servlet
* @param response encapsulates the response from the servlet
*/
public void performTask(
  HttpServletRequest request,
  HttpServletResponse response) {

  try {

		request.setAttribute("leapYearBean", leapYearBean);
    PostListCommand postList = (bbs.PostListCommand) java.beans.Beans.instantiate(getClass().getClassLoader(),"bbs.PostListCommand");
    postList.initialize();
    postList.execute();

    request.setAttribute("PostListCommand", postList);

    ServletContext sc = getServletContext();
    RequestDispatcher rd =
      sc.getRequestDispatcher("/JSP/PostListResults.jsp");
    rd.forward(request, response);

  } catch (Throwable theException) {
    theException.printStackTrace();
  }
}
}