Ajax读取xml数据类型例子

import java.io.IOException; import java.io.*; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * Servlet implementation class getCity */ @WebServlet("/getCity") public class getCity extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public getCity() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub response.setContentType("text/xml"); String selected = request.getParameter("selected"); PrintWriter out = response.getWriter(); out.println("<response"); if ( selected.equals("0") ) { out.println("<city>"); out.println("<cityname>请选择省份</cityname>"); out.println("<cityvalue>1</cityvalue>"); out.println("</city>"); } else if ( selected.equals("1") ) { out.println("<city>"); out.println("<cityname>北京</cityname>"); out.println("<cityvalue>1</cityvalue>"); out.println("</city>"); out.println("<city>"); out.println("<cityname>天安门</cityname>"); out.println("<cityvalue>2</cityvalue>"); out.println("</city>"); out.println("<city>"); out.println("<cityname>故宫/cityname>"); out.println("<cityvalue>3</cityvalue>"); out.println("</city>"); } else if ( selected.equals("2") ) { out.println("<city>"); out.println("<cityname>广州</cityname>"); out.println("<cityvalue>1</cityvalue>"); out.println("</city>"); out.println("<city>"); out.println("<cityname>茂名</cityname>"); out.println("<cityvalue>2</cityvalue>"); out.println("</city>"); out.println("<city>"); out.println("<cityname>泗水/cityname>"); out.println("<cityvalue>3</cityvalue>"); out.println("</city>"); } out.println("</response>"); out.flush(); out.close(); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doGet(request,response); } }