標籤:request 返回 flush rip on() sof keep read mil
package com.examsafety.service.sh;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.io.PrintWriter;import java.net.HttpURLConnection;import java.net.URL;import java.net.URLConnection;import java.util.List;import java.util.Map;import net.sf.json.JSONObject;/** * * @Description: 後台發送HTTP請求的公用方法 * @Version: V1.0.0 * @Date: 2017年7月31日 下午1:51:25 */public class SendUrlData { /** * 發送遠端POST請求的公用方法 * @param sendUrl (遠程請求的URL) * @param param (遠程請求參數) * @return JSONObject (遠程請求返回的JSON) */ public static JSONObject sendPostUrl(String url, String param){ PrintWriter out = null; BufferedReader in = null; JSONObject jsonObject = null; String result = ""; try { URL realUrl = new URL(url); // 開啟和URL之間的串連 HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection(); conn.setDoOutput(true); conn.setDoInput(true); conn.setUseCaches(false); conn.setRequestMethod("POST"); conn.setConnectTimeout(10000); conn.setReadTimeout(10000); conn.connect(); // 擷取HttpURLConnection對象對應的輸出資料流(佈建要求編碼為UTF-8) out = new PrintWriter( new OutputStreamWriter(conn.getOutputStream(), "UTF-8")); // 發送請求參數 out.print(param); // flush輸出資料流的緩衝 out.flush(); // 擷取請求返回資料(設定返回資料編碼為UTF-8) in = new BufferedReader( new InputStreamReader(conn.getInputStream(), "UTF-8")); String line; while ((line = in.readLine()) != null) { result += line; } jsonObject = JSONObject.fromObject(result); System.out.println(jsonObject); } catch (IOException e) { System.out.println("發送POST請求出現異常!" + e); e.printStackTrace(); } finally{ try{ if(out!=null){ out.close(); } if(in!=null){ in.close(); } } catch(IOException ex){ ex.printStackTrace(); } } return jsonObject; } /** * 發送遠端GET請求的公用方法 * @param sendUrl (遠程請求的URL) * @param param (遠程請求參數) * @return JSONObject (遠程請求返回的JSON) */ public static JSONObject sendGetUrl(String url, String param) { JSONObject jsonObject = null; String result = ""; BufferedReader in = null; try { String urlNameString = url + "?" + param; URL realUrl = new URL(urlNameString); // 開啟和URL之間的串連 URLConnection connection = realUrl.openConnection(); // 設定通用的請求屬性 connection.setRequestProperty("accept", "*/*"); connection.setRequestProperty("connection", "Keep-Alive"); connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 建立實際的串連 connection.connect(); // 擷取所有回應標頭欄位 Map<String, List<String>> map = connection.getHeaderFields(); // 遍曆所有的回應標頭欄位 /* for (String key : map.keySet()) { System.out.println(key + "--->" + map.get(key)); }*/ // 定義 BufferedReader輸入資料流來讀取URL的響應 in = new BufferedReader( new InputStreamReader(connection.getInputStream(), "UTF-8")); String line; while ((line = in.readLine()) != null) { result += line; } jsonObject = JSONObject.fromObject(result); System.out.println(jsonObject); } catch (Exception e) { System.out.println("發送GET請求出現異常!" + e); e.printStackTrace(); } finally { try { if (in != null) { in.close(); } } catch (Exception e2) { e2.printStackTrace(); } } return jsonObject; }}
參數說明url:需要請求的URL地址param:請求攜帶的參數(格式:“key1=value1&key2=value2&key3=value3”)
後台發送http請求通用方法,包括get和post