package com.test; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.URL; import java.net.URLConnection; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; import java.util.Set; public class HttpRequest { /** * 向指定URL發送GET方法的請求 * * @param url * 發送請求的URL * @param param * 請求參數,請求參數應該是 name1=value1&name2=value2 的形式。 * @return URL 所表明遠程資源的響應結果 */ public static String sendGet(String url, String param) { String result = ""; BufferedReader in = null; try { String urlNameString = url + "?" + param; URL realUrl = new URL(urlNameString); // 打開和URL之間的鏈接 URLConnection connection = realUrl.openConnection(); connection.setRequestProperty("Charsert", "UTF-8"); // 設置通用的請求屬性 connection.setRequestProperty("accept", "*/*"); connection.setRequestProperty("connection", "Keep-Alive"); connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 創建實際的鏈接 connection.connect(); // 獲取全部響應頭字段 Map<String, List<String>> map = connection.getHeaderFields(); // 遍歷全部的響應頭字段 for (String key : map.keySet()) { System.out.println(key + "--->" + map.get(key)); } // 定義 BufferedReader輸入流來讀取URL的響應 in = new BufferedReader(new InputStreamReader( connection.getInputStream(),"utf-8")); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("發送GET請求出現異常!" + e); e.printStackTrace(); } // 使用finally塊來關閉輸入流 finally { try { if (in != null) { in.close(); } } catch (Exception e2) { e2.printStackTrace(); } } return result; } /** * 向指定 URL 發送POST方法的請求 * * @param url * 發送請求的 URL * @param param * 請求參數,請求參數應該是 name1=value1&name2=value2 的形式。 * @return 所表明遠程資源的響應結果 */ public static String sendPost(String url, String param) throws RuntimeException{ PrintWriter out = null; BufferedReader in = null; String result = ""; try { URL realUrl = new URL(url); // 打開和URL之間的鏈接 URLConnection conn = realUrl.openConnection(); conn.setRequestProperty("Charsert", "UTF-8"); // 設置通用的請求屬性 conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); conn.setRequestProperty("Content-Type", "application/json"); // 發送POST請求必須設置以下兩行 conn.setDoOutput(true); conn.setDoInput(true); // 獲取URLConnection對象對應的輸出流 out = new PrintWriter(conn.getOutputStream()); // 發送請求參數 out.print(param); // flush輸出流的緩衝 out.flush(); // 定義BufferedReader輸入流來讀取URL的響應 in = new BufferedReader( new InputStreamReader(conn.getInputStream(), "utf-8")); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("發送 POST 請求出現異常!"+e); e.printStackTrace(); throw new RuntimeException("推送消息失敗"); } //使用finally塊來關閉輸出流、輸入流 finally{ try{ if(out!=null){ out.close(); } if(in!=null){ in.close(); } } catch(IOException ex){ ex.printStackTrace(); } } return result; } /** * 發送json格式請求 * @param url 請求路徑 * @param param json字符串 * @return * @throws RuntimeException */ public static String sendPostByJSON(String url, String param) throws RuntimeException{ PrintWriter out = null; BufferedReader in = null; String result = ""; try { URL realUrl = new URL(url); // 打開和URL之間的鏈接 URLConnection conn = realUrl.openConnection(); conn.setRequestProperty("Charsert", "UTF-8"); // 設置通用的請求屬性 conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); conn.setRequestProperty("Content-Type", "application/json"); // 發送POST請求必須設置以下兩行 conn.setDoOutput(true); conn.setDoInput(true); // 獲取URLConnection對象對應的輸出流 out = new PrintWriter(conn.getOutputStream()); // 發送請求參數 out.print(param); // flush輸出流的緩衝 out.flush(); // 定義BufferedReader輸入流來讀取URL的響應 in = new BufferedReader( new InputStreamReader(conn.getInputStream(), "utf-8")); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("發送 JSON POST 請求出現異常!"+e); e.printStackTrace(); throw new RuntimeException("推送消息失敗"); } //使用finally塊來關閉輸出流、輸入流 finally{ try{ if(out!=null){ out.close(); } if(in!=null){ in.close(); } } catch(IOException ex){ ex.printStackTrace(); } } return result; } public static String sendGet(String url,Map<String,Object> param){ return sendGet(url, convertMap(param)); } public static String sendPost(String url,Map<String,Object> param){ return sendPost(url, convertMap(param)); }
//測試 public static void main(String[] args) { //發送 GET請求
// 第一種方式 Map<String,Object> param = new HashMap<String,Object>(); param.put("userName", "xxx"); param.put("userPwd", "666666"); //拼接後的請求: http://127.0.0.1:8888/xx/xx?userName=xxx&userPwd=666666 String sr= HttpRequest.sendGet("http://127.0.0.1:8888/xx/xx", param); System.out.println(sr);
//第二種方式
String sr= HttpRequest.sendGet("http://127.0.0.1:8888/xx/xx", "userName=xxx&userPwd=666666");
//POST同理
//請求新浪api根據ip查找城市
String result2 = HttpRequest.sendGet("http://int.dpool.sina.com.cn/iplookup/iplookup.php","format=json&ip=120.237.91.74");
String result = HttpRequest.sendGet("http://ip.taobao.com/service/getIpInfo.php","ip=120.237.91.74");
System.out.println("result====" +result);
System.out.println("result2====" +result2);
} private static String convertMap(Map<String,Object> param){ StringBuffer sbf = new StringBuffer(); if(param!=null){ Set<Entry<String, Object>> entrySet = param.entrySet(); for(Entry<String,Object> entry:entrySet){ String key = entry.getKey(); Object value = entry.getValue(); sbf.append(key); sbf.append("="); sbf.append(value); sbf.append("&"); } } String paramStr =""; if(sbf.length()>0) paramStr = sbf.substring(0, sbf.lastIndexOf("&")); return paramStr; } }
最後在實際使用的過程當中遇到一個問題, 這兩個api單獨使用,常常性的請求不成功,後臺提示鏈接超時php
我的感受淘寶的成功率比新浪的高,測試過程當中,新浪沒有出現過一次.......java
能夠考慮使用百度地圖提供的接口json