readconceptstrservlet.java

《Java网络程序设计.rar》包括三个网络程序的源代码。

/*
 * ReadConceptstrServlet.java
 *
 * Created on October 4, 2001, 5:13 PM
 */
 
package org.impact.stars.control.web.outputs;           

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

import java.util.Collection;
import java.util.Vector;
import java.util.ArrayList;
import java.sql.Date;

import org.impact.stars.control.web.*;
import org.impact.stars.conceptmd.conceptstr.model.ConceptstrModel;
import org.impact.stars.conceptmd.concept.model.ConceptModel;
import org.impact.stars.util.*;
import org.impact.stars.control.exceptions.StarsAppException;
/** 
 *
 * @author  cai
 * @version 
 */
public class ReadConceptstrServlet extends HttpServlet {
   
    /** Initializes the servlet.
     *
    */
    String defaultcstrID;
    Streamoutput s_output;
    private AppModelManager apmm; 
    
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        defaultcstrID = "1";
        s_output = new Streamoutput();
        Debug.println("ReadConceptstrServlet: Initializing");
        apmm = (AppModelManager)getServletContext().getAttribute(WebKeys.AppModelManagerKey);
        if (apmm == null)
        {
            Debug.println("Error: AppModelManger not accessed in ReadConceptstrServlet..."); 
        }
    }

    /** Destroys the servlet.
    */  
    public void destroy() {

    }

    /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
    * @param request servlet request
    * @param response servlet response
    */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, java.io.IOException {
    		//System.out.println("in doGet(...)");
                Debug.println("ReadConceptstrServlet :");
		String projectID = null;		
		projectID = request.getParameter("projectID");				
                
                String conceptstrID = null;		
		conceptstrID = request.getParameter("conceptstrID");				
                Vector conceptvector = null;
                if (conceptstrID == null)
                {
                    conceptvector= new Vector((getConceptstrWebImpl(defaultcstrID)).toConceptstrModel().getConceptlist());
                }
                conceptvector= new Vector((getConceptstrWebImpl(conceptstrID)).toConceptstrModel().getConceptlist());
                
                s_output.sendObjecttoClient(response, conceptvector );
    } 

    /** Handles the HTTP <code>GET</code> method.
    * @param request servlet request
    * @param response servlet response
    */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, java.io.IOException {
        processRequest(request, response);
    } 

    /** Handles the HTTP <code>POST</code> method.
    * @param request servlet request
    * @param response servlet response
    */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, java.io.IOException {
        processRequest(request, response);
    }

    /** Returns a short description of the servlet.
    */
    public String getServletInfo() {
        return "Short description";
    }
    
        
      private ConceptstrWebImpl getConceptstrWebImpl(String WebKeyconceptstrID) {
            
            //ConceptstrWebImpl cstr = (ConceptstrWebImpl)getServletContext().getAttribute(WebKeyconceptstrID);
            ConceptstrWebImpl cstr = apmm.getConceptstrWebImpl(WebKeyconceptstrID);
            Debug.println("ReadConceptServlet: getConceptstrWebImpl");
            return cstr;
    }
    
    private Collection gettestConceptlist()
    {
                
                ArrayList conceptVector = new ArrayList();
                ConceptModel aconcept = null;

		aconcept = new ConceptModel("1","da1","1","dfafa","dfa","dfa", (new Date(2001,1,20)),"1","1");
		conceptVector.add(aconcept);
                aconcept = new ConceptModel("2","da1","1","dfafa","dfa","dfa", (new Date(2001,1,20)),"1","1");
		conceptVector.add(aconcept);
                aconcept = new ConceptModel("3","da1","1","dfafa","dfa","dfa", (new Date(2001,1,20)),"1","1");
		conceptVector.add(aconcept);
                aconcept = new ConceptModel("4","da1","2","dfafa","dfa","dfa", (new Date(2001,1,20)),"1","1");
		conceptVector.add(aconcept);
                aconcept = new ConceptModel("5","da1","3","dfafa","dfa","dfa", (new Date(2001,1,20)),"1","1");
		conceptVector.add(aconcept);
                aconcept = new ConceptModel("6","da1","4","dfafa","dfa","dfa", (new Date(2001,1,20)),"1","1");
		conceptVector.add(aconcept);
                aconcept = new ConceptModel("7","da1","4","dfafa","dfa","dfa", (new Date(2001,1,20)),"1","1");
		conceptVector.add(aconcept);
                aconcept = new ConceptModel("8","da1","7","dfafa","dfa","dfa", (new Date(2001,1,20)),"1","1");
		conceptVector.add(aconcept);
                return conceptVector; 
    }
}