调用URL 接口服务
1.Net调用URL 接口服务
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Text;
using System.Net;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
/********************************************************************************************************/
//请求数据接口
/********************************************************************************************************/
#region 请求数据接口
protected void send()
{
string url="http://apis.juhe.cn/ip/ip2addr"; //数据URL
string ip = "www.juhe.cn"; //需要查询的IP地址
string appkey = "xxxxxxxxxxxxxxxxxxxx";
StringBuilder sbTemp = new StringBuilder();
//POST 传值
sbTemp.Append("ip="+ip+"&appkey=" + appkey);
byte[] bTemp = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(sbTemp.ToString());
String postReturn = doPostRequest(url, bTemp);
//Response.Write("Post response is: " + postReturn); //测试返回结果
JsonObject newObj = new JsonObject(postReturn);
String errorCode = newObj['error_code'].Value;
if(errorCode =='0'){
//成功的请求
Response.Write(newObj['result']['area']);
}else{
//请求失败，错误原因
Response.Write(newObj['reason'].Value);
}
}
//POST方式发送得结果
private static String doPostRequest(string url, byte[] bData)
{
System.Net.HttpWebRequest hwRequest;
System.Net.HttpWebResponse hwResponse;
string strResult = string.Empty;
try
{
hwRequest = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
hwRequest.Timeout = 5000;
hwRequest.Method = "POST";
hwRequest.ContentType = "application/x-www-form-urlencoded";
hwRequest.ContentLength = bData.Length;
System.IO.Stream smWrite = hwRequest.GetRequestStream();
smWrite.Write(bData, 0, bData.Length);
smWrite.Close();
}
catch (System.Exception err)
{
WriteErrLog(err.ToString());
return strResult;
}
//get response
try
{
hwResponse = (HttpWebResponse)hwRequest.GetResponse();
StreamReader srReader = new StreamReader(hwResponse.GetResponseStream(), Encoding.UTF8);
strResult = srReader.ReadToEnd();
srReader.Close();
hwResponse.Close();
}
catch (System.Exception err)
{
WriteErrLog(err.ToString());
}
return strResult;
}
private static void WriteErrLog(string strErr)
{
Console.WriteLine(strErr);
System.Diagnostics.Trace.WriteLine(strErr);
}
#endregion
}
2.C#调用URL接口服务
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Net;
using System.IO;
using System.IO.Compression;
using System.Text.RegularExpressions;
using System.Web.Script.Serialization;
namespace IP
{
class Program
{
private static readonly string DefaultUserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
static void Main(string[] args)
{
string appKey = "##########################"; //申请的对应的KEY
string ip = "www.juhe.cn";
string tagUrl = "http://apis.juhe.cn/ip/ip2addr?ip=" + ip + "&key=" + appKey;
CookieCollection cookies = new CookieCollection();
HttpWebResponse response = CreateGetHttpResponse(tagUrl, null, null, cookies);
StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
String retValue = sr.ReadToEnd();
sr.Close();
var serializer = new JavaScriptSerializer();
IPObj ret = serializer.Deserialize<IPObj>(retValue);
bool result = ret.error_code.Equals("0", StringComparison.Ordinal);
if (result)
{
Console.Write(ret.result.location + " " + ret.result.area);
}
else
{
Console.Write("error_code:"+ret.error_code+",reason:"+ret.reason);
}
}
/// <summary>
/// 创建GET方式的HTTP请求
/// </summary>
/// <param name="url">请求的URL</param>
/// <param name="timeout">请求的超时时间</param>
/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
/// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>
/// <returns></returns>
public static HttpWebResponse CreateGetHttpResponse(string url, int? timeout, string userAgent, CookieCollection cookies)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
request.Method = "GET";
request.UserAgent = DefaultUserAgent;
if (!string.IsNullOrEmpty(userAgent))
{
request.UserAgent = userAgent;
}
if (timeout.HasValue)
{
request.Timeout = timeout.Value;
}
if (cookies != null)
{
request.CookieContainer = new CookieContainer();
request.CookieContainer.Add(cookies);
}
return request.GetResponse() as HttpWebResponse;
}
}
class IPObj
{
public string error_code { get; set; }
public string reason { get; set; }
public Result result { get; set; }
}
class Result
{
public string area { get; set; }
public string location { get; set; }
}
}
3.Java调用URL接口服务
package com.test;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import net.sf.json.JSONObject;
public class Demo {
public static void main(String[] args) {
String city = "suzhou";//参数
String url = "http://web.juhe.cn:8080/environment/air/cityair?city=";//url为请求的api接口地址
String key= "################################";//申请的对应key
String urlAll = new StringBuffer(url).append(city).append("&key=").append(key).toString();
String charset ="UTF-8";
String jsonResult = get(urlAll, charset);//得到JSON字符串
JSONObject object = JSONObject.fromObject(jsonResult);//转化为JSON类
String code = object.getString("error_code");//得到错误码
//错误码判断
if(code.equals("0")){
//根据需要取得数据
JSONObject jsonObject = (JSONObject)object.getJSONArray("result").get(0);
System.out.println(jsonObject.getJSONObject("citynow").get("AQI"));
}else{
System.out.println("error_code:"+code+",reason:"+object.getString("reason"));
}
}
/**
*
* @param urlAll:请求接口
* @param charset:字符编码
* @return 返回json结果
*/
public static String get(String urlAll,String charset){
BufferedReader reader = null;
String result = null;
StringBuffer sbf = new StringBuffer();
String userAgent = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36";//模拟浏览器
try {
URL url = new URL(urlAll);
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("GET");
connection.setReadTimeout(30000);
connection.setConnectTimeout(30000);
connection.setRequestProperty("User-agent",userAgent);
connection.connect();
InputStream is = connection.getInputStream();
reader = new BufferedReader(new InputStreamReader(
is, charset));
String strRead = null;
while ((strRead = reader.readLine()) != null) {
sbf.append(strRead);
sbf.append("\r\n");
}
reader.close();
result = sbf.toString();
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
}
