
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:
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