📄 listsubitemservlet.java
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package com.liubin.servlet.article;
import java.util.*;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.liubin.model.SubItem;
import com.liubin.service.article.ArticleService;
public class ListSubItemServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public ListSubItemServlet() {
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;charset=gbk");
response.setHeader("Cache-Control", "no-cache");
StringBuffer buffer=new StringBuffer("<state>");
PrintWriter out = response.getWriter();
String item_id =request.getParameter("item_id");
System.out.println("Ajax的值是"+item_id);
SubItem sub=null;
List<SubItem>list=new ArticleService().getSubItemByItem(item_id);
System.out.println(list.size());
Iterator<SubItem>iterator=list.iterator();
while(iterator.hasNext()){
sub=iterator.next();
buffer.append("<subitem>");
buffer.append("<subitem_id>"+sub.getSub_id()+"</subitem_id>");
buffer.append("<subitem_name>"+sub.getSub_name()+"</subitem_name>");
buffer.append("</subitem>");
}
buffer.append("</state>");
System.out.println(buffer.toString());
out.print(buffer.toString());
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @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 doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the POST method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
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