通过 jsp+ajax+servlet+webservice 远程访问天气预报服务
通过 jsp+ajax+servlet+webservice 远程访问天气预报服务
- webservice 客户端访问的方式
1. java代码来访问
2. ajax 方式异步加载webservice
- 通过 ajax 异步加载 天气信息实现步骤：
1. 了解远程第三方的天气预报webservice服务
广东,31124 广州,2350 东莞,2351 深圳,2419 温度信息 String[8]
2. wsimport 生成本地代理
3. 准备一个index.jsp 页面，显示城市信息 ，下拉城市，显示天气信息
4. 准备一个weatherServlet ,通过它来访问webservcie
5. Servlet要在web .xml注册
通过Jdk
声明 ：@Webservice
发布 ：EndPoint
不足： 希望tomcat启动时，webservice服务能够开启 ，最好与Spring集成
希望有一个webservice的服务列表
通过Webservice框架来实现 ：axis2 、xfire
1.通过wsimport生成本地代理与打成jar包
wsimport http://ws.webxml.com.cn/WebServices/WeatherWS.asmx?WSDL
发现产生错误:
将源码考到本地，将错误行删除(15,61,101),然后存为xml文件后重新进行wsimport，发现只有三个警告，同时生成对应的class文件打成jar包。
C:\Users\liqiang\Desktop>wsimport weather.xml parsing WSDL... [WARNING] Ignoring SOAP port "WeatherWSSoap12": it uses non-standard SOAP 1.2 bi nding. You must specify the "-extension" option to use this binding. line 533 of file:/C:/Users/liqiang/Desktop/weather.xml [WARNING] ignoring port "WeatherWSHttpGet": no SOAP address specified. try runni ng wsimport with -extension switch. line 536 of file:/C:/Users/liqiang/Desktop/weather.xml [WARNING] ignoring port "WeatherWSHttpPost": no SOAP address specified. try runn ing wsimport with -extension switch. line 539 of file:/C:/Users/liqiang/Desktop/weather.xml Generating code... Compiling code... C:\Users\liqiang\Desktop>jar -cvf weather.jar ./cn
2.index.jsp:选择地区的时候异步请求天气情况
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <script type="text/javascript" src="jquery-1.8.2.js"></script> </head> <body> <select id="province"> <option value="31124">广东省</option> </select> <select id="city"> <option value="2350">广州</option> <option value="2419">深圳</option> <option value="2351">东莞</option> </select> <hr/> <span>XXXX</span> <script type="text/javascript"> $("#city").change(function(){ var city=$("#city option:selected").val(); $.post("weatherServlet",{"city":city},function(backdata){ $("span").text(backdata).css("color","blue"); }); }); </script> </body> </html>
3.接收请求的servlet
import java.io.IOException; import java.io.PrintWriter; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import cn.com.webxml.WeatherWS; import cn.com.webxml.WeatherWSSoap; public class WeatherServlet extends HttpServlet { private WeatherWS ws; public WeatherServlet() { super(); } public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("UTF-8"); String cityCode=request.getParameter("city"); System.out.println("获取城市的id"+cityCode); //通过webservice获取远程的天气预报信息 WeatherWSSoap weatherWSSoap = ws.getWeatherWSSoap(); List<String> weathers = weatherWSSoap.getWeather(cityCode, "").getString(); String weather=weathers.get(8);//取得温度信息 //把结果回显给页面 response.setContentType("text/html;charset=UTF-8"); PrintWriter printWriter=response.getWriter(); printWriter.write(weather); printWriter.flush(); printWriter.close(); } public void init() throws ServletException { // Put your code here ws=new WeatherWS(); } }
效果:
