selectservlet.java

征服AJAX+LUCENE构建搜索引擎的源码

package cn.edu.bit.servlet;


import javax.servlet.ServletConfig;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class SelectServlet extends HttpServlet {



	   /**

	    * Constructor of the object.

	    */

	  



	   public SelectServlet() {

	       super();

	   }



	   /**

	    * Destruction of the servlet. <br>

	    */

	   public void destroy() {

	       super.destroy(); // Just puts "destroy" string in log

	       // Put your code here

	   }



	   /**

	    * The doGet method of the servlet. <br>

	    *

	    * This method is called when a form has its tag value method equals to get.

	    *

	    * @param request the request send by the client to the server

	    * @param response the response send by the server to the client

	    * @throws ServletException if an error occurred

	    * @throws IOException if an error occurred

	    */

	   public void doGet(HttpServletRequest request, HttpServletResponse response)

	           throws ServletException, IOException {

	       response.setContentType("text/xml");

	       response.setHeader("Cache-Control", "no-cache");	      

	       String targetId = request.getParameter("id").toString();

	       String xml_start = "<selects>";
    	   String xml_end = "</selects>";
    	   String xml = "";
    	   if(targetId.equalsIgnoreCase("0"))
	       {
	    	   xml = "<select><value>0</value><text>Unbounded</text></select>";	    	   
	       }
    	   else if(targetId.equalsIgnoreCase("1"))
	       {
	    	   xml = "<select><value>1</value><text>Mana Burn</text></select>";
	    	   xml += "<select><value>2</value><text>Death Coil</text></select>";
	    	   xml += "<select><value>3</value><text>Unholy Aura</text></select>";
	    	   xml += "<select><value>4</value><text>Unholy Fire</text></select>";
	    	   
	       }
	       else if(targetId.equalsIgnoreCase("2"))
	       {
	    	   xml = "<select><value>1</value><text>Corpexplode</text></select>";
	    	   xml += "<select><value>2</value><text>Raise Dead</text></select>";
	    	   xml += "<select><value>3</value><text>Brilliance Aura</text></select>";
	    	   xml += "<select><value>4</value><text>Aim Aura</text></select>";
	       }
	       else
	       {
	    	   xml = "<select><value>1</value><text>Rain of Chaos</text></select>";
	    	   xml += "<select><value>2</value><text>Finger of Death</text></select>";
	    	   xml += "<select><value>3</value><text>Bash</text></select>";
	    	   xml += "<select><value>4</value><text>Summon Doom</text></select>";
	       }
	       
	       String last_xml = xml_start + xml + xml_end;
	       
	       response.getWriter().write(last_xml);

	   }

	   /**

	    * Initialization of the servlet. <br>

	    *

	    * @throws ServletException if an error occure

	    */

	   public void init(ServletConfig config) throws ServletException {




	   }



	}