JSP天气预报servlet版
题外话:
本程序利用网络上发布的公共webservice endpoint
www.webxml.com.cn/WebServices/WeatherWebService.asmx
大致步骤是
1 利用soap向webservice endpoint进行请求,取回请求结果
2 把结果显示在web界面上,web界面采用Java+Jsp(呵呵,有点丑陋,篇幅所迫)
好,废话少说,直接进入核心程序讲解。
一 WeatherReport类
方法 1 构造soap请求(请求格式请见上面的链接),用用户输入的城市名称镶在此请求里面
java 代码
/**
* 获取SOAP的请求头,并替换其中的标志符号为用户输入的城市
*
* 编写者:王景辉
*
* @param city
* 用户输入的城市名称
* @return 客户将要发送给服务器的SOAP请求
*/
private static String getSoapRequest(String city) {
StringBuilder sb = new StringBuilder();
sb
.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>"
+ "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" "
+ "xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" "
+ "xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"
+ "<soap:Body> <getWeatherbyCityName xmlns=\"http://WebXml.com.cn/\">"
+ "<theCityName>" + city
+ "</theCityName> </getWeatherbyCityName>"
+ "</soap:Body></soap:Envelope>");
return sb.toString();
}
* 获取SOAP的请求头,并替换其中的标志符号为用户输入的城市
*
* 编写者:王景辉
*
* @param city
* 用户输入的城市名称
* @return 客户将要发送给服务器的SOAP请求
*/
private static String getSoapRequest(String city) {
StringBuilder sb = new StringBuilder();
sb
.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>"
+ "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" "
+ "xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" "
+ "xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"
+ "<soap:Body> <getWeatherbyCityName xmlns=\"http://WebXml.com.cn/\">"
+ "<theCityName>" + city
+ "</theCityName> </getWeatherbyCityName>"
+ "</soap:Body></soap:Envelope>");
return sb.toString();
}
方法 2 向endpoint发送上述SOAP请求,并设置一些请求属性,返回一个服务器端的InputStream(XML文档流)
java 代码
/**
* 用户把SOAP请求发送给服务器端,并返回服务器点返回的输入流
*
* 编写者:王景辉
*
* @param city
* 用户输入的城市名称
* @return 服务器端返回的输入流,供客户端读取
* @throws Exception
*/
private static InputStream getSoapInputStream(String city) throws Exception {
try {
String soap = getSoapRequest(city);
if (soap == null) {
return null;
}
URL url = new URL(
"http://www.webxml.com.cn/WebServices/WeatherWebService.asmx");
URLConnection conn = url.openConnection();
conn.setUseCaches(false);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestProperty("Content-Length", Integer.toString(soap
.length()));
conn.setRequestProperty("Content-Type", "text/xml; charset=utf-8");
conn.setRequestProperty("SOAPAction",
"http://WebXml.com.cn/getWeatherbyCityName");
OutputStream os = conn.getOutputStream();
OutputStreamWriter osw = new OutputStreamWriter(os, "utf-8");
osw.write(soap);
osw.flush();
osw.close();
InputStream is = conn.getInputStream();
return is;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
* 用户把SOAP请求发送给服务器端,并返回服务器点返回的输入流
*
* 编写者:王景辉
*
* @param city
* 用户输入的城市名称
* @return 服务器端返回的输入流,供客户端读取
* @throws Exception
*/
private static InputStream getSoapInputStream(String city) throws Exception {
try {
String soap = getSoapRequest(city);
if (soap == null) {
return null;
}
URL url = new URL(
"http://www.webxml.com.cn/WebServices/WeatherWebService.asmx");
URLConnection conn = url.openConnection();
conn.setUseCaches(false);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestProperty("Content-Length", Integer.toString(soap
.length()));
conn.setRequestProperty("Content-Type", "text/xml; charset=utf-8");
conn.setRequestProperty("SOAPAction",
"http://WebXml.com.cn/getWeatherbyCityName");
OutputStream os = conn.getOutputStream();
OutputStreamWriter osw = new OutputStreamWriter(os, "utf-8");
osw.write(soap);
osw.flush();
osw.close();
InputStream is = conn.getInputStream();
return is;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
方法 3 解析方法2返回的XML文档流,并用特定的符号分隔,以便我们在Jsp页面进行结果分析
java 代码
/**
* 对服务器端返回的XML进行解析
*
* 编写者:王景辉
*
* @param city
* 用户输入的城市名称
* @return 字符串 用,分割
*/
public static String getWeather(String city) {
try {
Document doc;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
DocumentBuilder db = dbf.newDocumentBuilder();
InputStream is = getSoapInputStream(city);
doc = db.parse(is);
NodeList nl = doc.getElementsByTagName("string");
StringBuffer sb = new StringBuffer();
for (int count = 0; count < nl.getLength(); count++) {
Node n = nl.item(count);
if(n.getFirstChild().getNodeValue().equals("查询结果为空!")) {
sb = new StringBuffer("#") ;
break ;
}
sb.append(n.getFirstChild().getNodeValue() + "#\n");
}
is.close();
return sb.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
* 对服务器端返回的XML进行解析
*
* 编写者:王景辉
*
* @param city
* 用户输入的城市名称
* @return 字符串 用,分割
*/
public static String getWeather(String city) {
try {
Document doc;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
DocumentBuilder db = dbf.newDocumentBuilder();
InputStream is = getSoapInputStream(city);
doc = db.parse(is);
NodeList nl = doc.getElementsByTagName("string");
StringBuffer sb = new StringBuffer();
for (int count = 0; count < nl.getLength(); count++) {
Node n = nl.item(count);
if(n.getFirstChild().getNodeValue().equals("查询结果为空!")) {
sb = new StringBuffer("#") ;
break ;
}
sb.append(n.getFirstChild().getNodeValue() + "#\n");
}
is.close();
return sb.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
二 weatherInfo.jsp页面
<%@ page language="java" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>城市天气信息</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
String info = (String) request.getAttribute("info") ;
if(info.equals("#")) {
%>
<h1>该城市暂不被支持天气预报服务</h1>
<%
} else {
String[] infos = info.split("#") ;
%>
<table border="1">
<tr>
<td colspan="3">
<strong><font color="blue">72小时天气预报</font>---
<font color="red">
<!-- 城市名称 -->
<%=infos[0]%> <%=infos[1]%>
</font>
<font size="-1">
<%=infos[4] %>发布
</font>
</strong>
</td>
</tr>
<tr align="center">
<td>
<table>
<tr align="center">
<!-- 日期 -->
<td>
<font size="-1">
<%=infos[6] %>
</font>
</td>
</tr>
<tr align="center">
<!-- 天气图标 -->
<td>
<img src="tqimgs/a_<%=infos[8]%>" />
<img src="tqimgs/a_<%=infos[9]%>" />
</td>
</tr>
<tr align="center">
<!-- 天气细则 -->
<td>
<font size="-1">
<%=infos[5] %><br>
<%=infos[7] %><br>
</font>
</td>
</tr>
</table>
</td>
<td>
<table align="center">
<tr align="center">
<td>
<!-- 第二天的时间 -->
<font size="-1">
<%=infos[13] %>
</font>
</td>
</tr>
<tr align="center">
<td>
<!-- 第二天的天气图标 -->
<img src="tqimgs/a_<%=infos[15]%>">
<img src="tqimgs/a_<%=infos[16]%>">
</td>
</tr>
<tr align="center">
<td>
<!-- 第二天的天气细则 -->
<font size="-1">
<%=infos[12] %><br>
<%=infos[14] %><br>
</font>
</td>
</tr>
</table>
</td>
<td>
<table align="center">
<tr align="center">
<td>
<!-- 第三天的天气时间 -->
<font size="-1">
<%=infos[18] %>
</font>
</td>
</tr>
<tr align="center">
<td>
<!-- 第三天的天气图标 -->
<img src="tqimgs/a_<%=infos[20]%>" />
<img src="tqimgs/a_<%=infos[21]%>" />
</td>
</tr>
<tr align="center">
<td>
<!-- 第三天的天气细则 -->
<font size="-1">
<%=infos[17] %><br>
<%=infos[19] %><br>
</font>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="3">
<!-- 居家指数 -->
<strong><font color="blue">温馨提醒</font></strong>
</td>
</tr>
<tr>
<td colspan="3">
<table>
<tr>
<td>
<img src="tqimgs/sun.gif" />
</td>
<td>
<font size="-1">
<%=infos[10] %>
</font>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="3">
<%
String str = "" ;
String s1 = "" ;
String s1Content = "" ;
String s2 = "" ;
String s2Content = "" ;
String s3 = "" ;
String s3Content = "" ;
String s4 = "" ;
String s4Content = "" ;
String s5 = "" ;
String s5Content = "" ;
String s6 = "" ;
String s6Content = "" ;
String s7 = "" ;
String s7Content = "" ;
try {
//这里开始进行具体详细测试
str = infos[11] ;
//穿衣指数
s1 = str.substring(str.indexOf("穿衣指数:"),str.indexOf("穿衣指数:")+4) ;
s1Content = str.substring(str.indexOf("穿衣指数:")+5,str.indexOf("感冒指数:")) ;
//感冒指数
s2 = str.substring(str.indexOf("感冒指数:"),str.indexOf("感冒指数:")+4) ;
s2Content = str.substring(str.indexOf("感冒指数:")+5,str.indexOf("晨练指数:")) ;
//晨练指数
s3 = str.substring(str.indexOf("晨练指数:"),str.indexOf("晨练指数:")+4) ;
s3Content = str.substring(str.indexOf("晨练指数:")+5,str.indexOf("交通指数:")) ;
//交通指数
s7 = str.substring(str.indexOf("交通指数:"),str.indexOf("交通指数:")+4) ;
s7Content = str.substring(str.indexOf("交通指数:")+5,str.indexOf("中暑指数:")) ;
//中暑指数
s4 = str.substring(str.indexOf("中暑指数:"),str.indexOf("中暑指数:")+4) ;
s4Content = str.substring(str.indexOf("中暑指数:")+5,str.indexOf("防晒指数:")) ;
//防晒指数
s5 = str.substring(str.indexOf("防晒指数:"),str.indexOf("防晒指数:")+4) ;
s5Content = str.substring(str.indexOf("防晒指数:")+5,str.indexOf("旅行指数:")) ;
//旅行指数
s6 = str.substring(str.indexOf("旅行指数:"),str.indexOf("旅行指数:")+4) ;
s6Content = str.substring(str.indexOf("旅行指数:")+5) ;
%>
<table>
<tr>
<td width="50">
<img src="tqimgs/zhishu_01.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s1 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s1Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_20.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s2 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s2Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_03.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s3 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s3Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_22.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s4 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s4Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_07.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s5 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s5Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_31.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s6 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s6Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_11.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s7 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s7Content %>
</font>
</td>
</tr>
</table>
</td>
</tr>
</table>
<%
} catch(Exception e) {
}
%>
<%
}
%>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>城市天气信息</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
String info = (String) request.getAttribute("info") ;
if(info.equals("#")) {
%>
<h1>该城市暂不被支持天气预报服务</h1>
<%
} else {
String[] infos = info.split("#") ;
%>
<table border="1">
<tr>
<td colspan="3">
<strong><font color="blue">72小时天气预报</font>---
<font color="red">
<!-- 城市名称 -->
<%=infos[0]%> <%=infos[1]%>
</font>
<font size="-1">
<%=infos[4] %>发布
</font>
</strong>
</td>
</tr>
<tr align="center">
<td>
<table>
<tr align="center">
<!-- 日期 -->
<td>
<font size="-1">
<%=infos[6] %>
</font>
</td>
</tr>
<tr align="center">
<!-- 天气图标 -->
<td>
<img src="tqimgs/a_<%=infos[8]%>" />
<img src="tqimgs/a_<%=infos[9]%>" />
</td>
</tr>
<tr align="center">
<!-- 天气细则 -->
<td>
<font size="-1">
<%=infos[5] %><br>
<%=infos[7] %><br>
</font>
</td>
</tr>
</table>
</td>
<td>
<table align="center">
<tr align="center">
<td>
<!-- 第二天的时间 -->
<font size="-1">
<%=infos[13] %>
</font>
</td>
</tr>
<tr align="center">
<td>
<!-- 第二天的天气图标 -->
<img src="tqimgs/a_<%=infos[15]%>">
<img src="tqimgs/a_<%=infos[16]%>">
</td>
</tr>
<tr align="center">
<td>
<!-- 第二天的天气细则 -->
<font size="-1">
<%=infos[12] %><br>
<%=infos[14] %><br>
</font>
</td>
</tr>
</table>
</td>
<td>
<table align="center">
<tr align="center">
<td>
<!-- 第三天的天气时间 -->
<font size="-1">
<%=infos[18] %>
</font>
</td>
</tr>
<tr align="center">
<td>
<!-- 第三天的天气图标 -->
<img src="tqimgs/a_<%=infos[20]%>" />
<img src="tqimgs/a_<%=infos[21]%>" />
</td>
</tr>
<tr align="center">
<td>
<!-- 第三天的天气细则 -->
<font size="-1">
<%=infos[17] %><br>
<%=infos[19] %><br>
</font>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="3">
<!-- 居家指数 -->
<strong><font color="blue">温馨提醒</font></strong>
</td>
</tr>
<tr>
<td colspan="3">
<table>
<tr>
<td>
<img src="tqimgs/sun.gif" />
</td>
<td>
<font size="-1">
<%=infos[10] %>
</font>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="3">
<%
String str = "" ;
String s1 = "" ;
String s1Content = "" ;
String s2 = "" ;
String s2Content = "" ;
String s3 = "" ;
String s3Content = "" ;
String s4 = "" ;
String s4Content = "" ;
String s5 = "" ;
String s5Content = "" ;
String s6 = "" ;
String s6Content = "" ;
String s7 = "" ;
String s7Content = "" ;
try {
//这里开始进行具体详细测试
str = infos[11] ;
//穿衣指数
s1 = str.substring(str.indexOf("穿衣指数:"),str.indexOf("穿衣指数:")+4) ;
s1Content = str.substring(str.indexOf("穿衣指数:")+5,str.indexOf("感冒指数:")) ;
//感冒指数
s2 = str.substring(str.indexOf("感冒指数:"),str.indexOf("感冒指数:")+4) ;
s2Content = str.substring(str.indexOf("感冒指数:")+5,str.indexOf("晨练指数:")) ;
//晨练指数
s3 = str.substring(str.indexOf("晨练指数:"),str.indexOf("晨练指数:")+4) ;
s3Content = str.substring(str.indexOf("晨练指数:")+5,str.indexOf("交通指数:")) ;
//交通指数
s7 = str.substring(str.indexOf("交通指数:"),str.indexOf("交通指数:")+4) ;
s7Content = str.substring(str.indexOf("交通指数:")+5,str.indexOf("中暑指数:")) ;
//中暑指数
s4 = str.substring(str.indexOf("中暑指数:"),str.indexOf("中暑指数:")+4) ;
s4Content = str.substring(str.indexOf("中暑指数:")+5,str.indexOf("防晒指数:")) ;
//防晒指数
s5 = str.substring(str.indexOf("防晒指数:"),str.indexOf("防晒指数:")+4) ;
s5Content = str.substring(str.indexOf("防晒指数:")+5,str.indexOf("旅行指数:")) ;
//旅行指数
s6 = str.substring(str.indexOf("旅行指数:"),str.indexOf("旅行指数:")+4) ;
s6Content = str.substring(str.indexOf("旅行指数:")+5) ;
%>
<table>
<tr>
<td width="50">
<img src="tqimgs/zhishu_01.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s1 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s1Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_20.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s2 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s2Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_03.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s3 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s3Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_22.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s4 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s4Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_07.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s5 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s5Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_31.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s6 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s6Content %>
</font>
</td>
</tr>
<tr>
<td width="50">
<img src="tqimgs/zhishu_11.gif" />
</td>
<td>
<strong>
<font size="-1">
<%=s7 %>
</font>
</strong>
</td>
<td>
<font size="-1">
<%=s7Content %>
</font>
</td>
</tr>
</table>
</td>
</tr>
</table>
<%
} catch(Exception e) {
}
%>
<%
}
%>
</body>
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