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1、天气指令有以下几种：下雨，输入/weatherrain。
2、不下雨，输入/weatherclear。
3、雷阵雨，输入/weatherthunder。
4、weatherrain(下雪)。
5、weatherclear(无天气)。
6、weatherthunder(暴风雪)。
前台js界面代码：
//省份
function LoadProvince() {
$.ajax({
type: "POST",
url: "ashx/weatherHandler.ashx",
data: "option=province",
success: function (result) {
$(".sel-province option").remove();
var arry = result.split('|');
var obj = null;
for (var i = 0; i arry.length; i++) {
if (arry[i] != null arry[i] != "") {
obj = arry[i].split(',');
$(".sel-province").append("option value='" + obj[1] + "'" + obj[0] + "/option");
}
}
$(".sel-province").find("option[text='北京']").attr("selected", "selected");
},
error: function (errorMsg) {
$(".result-table tr").remove();
$(".result-table").append("trtd省份请求出现错误，请您稍后重试。。。/td/tr");
}
});
}
//城市
function LoadCity(provinceid) {
$.ajax({
type: "POST",
url: "ashx/weatherHandler.ashx",
data: "provinceid=" + provinceid + "option=city",
success: function (result) {
$(".sel-city option").remove();
var arry = result.split('|');
var obj = null;
for (var i = 0; i arry.length; i++) {
if (arry[i] != null arry[i] != "") {
obj = arry[i].split(',');
$(".sel-city").append("option value='" + obj[1] + "'" + obj[0] + "/option");
}
}
},
error: function (errorMsg) {
$(".result-table tr").remove();
$(".result-table").append("trtd城市请求出现错误，请您稍后重试。。。/td/tr");
}
});
}
//加载天气
function GetWeather(cityid) {
$.ajax({
type: "POST",
url: "ashx/weatherHandler.ashx",
data: "cityid=" + cityid + "option=weather",
success: function (result) {
$(".result-table tr").remove();
var arry = result.split('|');
var obj = null;
for (var i = 0; i arry.length; i++) {
if (arry[i] != null arry[i] != "") {
if (arry[i].indexOf(".gif") 0) {
$(".result-table").append("trtdimage src='images/" + arry[i] + "'//td/tr");
}
else {
$(".result-table").append("trtd" + arry[i] + "/td/tr");
}
}
}
},
error: function (errorMsg) {
$(".result-table tr").remove();
$(".result-table").append("trtd天气数据请求出现错误，请您稍后重试。。。/td/tr");
}
});
}
html代码：
body
form id="form1" runat="server"
div class="head-div"
table
tr
td
select class="sel-province sel"
/select
/td
td
select class="sel-city sel"
/select
/td
td
input type="button" class="btn-search" value="查询" /
/td
/tr
/table
/div
div class="result-div"
table class="result-table"
/table
/div
/form
/body
由于js不支持跨域，直接ajax+ashx一般处理程序（在里面调用天气接口）。一般处理程序代码如下：
using System.Web;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Text;
namespace WeatherTest.ashx
{
/// summary
/// weatherHandler 的摘要说明
/// /summary
public class weatherHandler : IHttpHandler
{
WeatherWsClient.WeatherWSSoapClient client = new WeatherWsClient.WeatherWSSoapClient();
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string[] result = null;
string option = context.Request.Form["option"];
switch (option)
{
case "province":
result = GetProvinces();
break;
case "city":
result = GetCitys(context.Request.Form["provinceid"]);
break;
case "weather":
result = GetWeather(context.Request.Form["cityid"], null);
break;
}
string str = ConvertToString(result, option);
context.Response.Write(str);
}
/// summary
/// 数组转字符串
/// /summary
/// param name="result"/param
/// param name="option"/param
/// returns/returns
private string ConvertToString(string[] result, string option)
{
StringBuilder sb = new StringBuilder();
foreach (string item in result)
{
sb.Append(item+"|");
}
return sb.ToString();
}
/// summary
/// 省份
/// /summary
/// returns/returns
private string[] GetProvinces()
{
return client.getRegionProvince();
}
/// summary
/// 城市
/// /summary
/// param name="provinceid"/param
/// returns/returns
private string[] GetCitys(string provinceid)
{
return client.getSupportCityString(provinceid);
}
/// summary
/// 天气数据
/// /summary
/// param name="cityid"/param
/// param name="userid"/param
/// returns/returns
private string[] GetWeather(string cityid, string userid)
{
return client.getWeather(cityid, userid);
}
public bool IsReusable
{
get
{
return false;
}
}
}
}
①取出地址中的返回值（getWeatherReader方法）
②解析json格式的字符串
③形成你要展示的天气预报效果
public static String getWeatherReader() {//取得接口字符串
String currentLine = "";
String strReturn = "";
URL url = null;
HttpURLConnection conn = null;
InputStream in = null;
BufferedReader buff = null;
try {
url = new URL("");
System.out.println(url.toURI());
//打开地址链接
conn = (HttpURLConnection)url.openConnection();
conn.connect();
//接收数据
in = conn.getInputStream();
//如有乱码注意编码方式，如：UTF-8
buff = new BufferedReader(new InputStreamReader(in, "gb2312"));
while((currentLine = buff.readLine()) != null) {
strReturn += currentLine;
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
in.close();
buff.close();
} catch (IOException e) {
return "8EF0000";
}
}
return strReturn;
}