1. 程式人生 > >Java後臺傳送Post和get請求 (並解決返回值亂碼問題)

Java後臺傳送Post和get請求 (並解決返回值亂碼問題)

public class HttpRequest { /** * 向指定URL傳送GET方法的請求 * * @param url * 傳送請求的URL * @param param * 請求引數,請求引數應該是 name1=value1&name2=value2 的形式。 * @return URL 所代表遠端資源的響應結果 */ public static String sendGet(String url, String param) { String result = ""
; BufferedReader in = null; try { String urlNameString = url + "?" + param; URL realUrl = new URL(urlNameString); // 開啟和URL之間的連線 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)"); connection.setRequestProperty("Accept-Charset", "utf-8"); connection.setRequestProperty("contentType"
, "utf-8"); // 建立實際的連線 connection.connect(); // 獲取所有響應頭欄位 Map<String, List<String>> map = connection.getHeaderFields(); // 遍歷所有的響應頭欄位 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("傳送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 傳送POST方法的請求 * * @param url * 傳送請求的 URL * @param param * 請求引數,請求引數應該是 name1=value1&name2=value2 的形式。 * @return 所代表遠端資源的響應結果 */ public static String sendPost(String url, String param) { PrintWriter out = null; BufferedReader in = null; String result = ""; try { URL realUrl = new URL(url); // 開啟和URL之間的連線 URLConnection conn = realUrl.openConnection(); // 設定通用的請求屬性 conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 傳送POST請求必須設定如下兩行 conn.setDoOutput(true); conn.setDoInput(true); // 獲取URLConnection物件對應的輸出流 out = new PrintWriter(conn.getOutputStream()); // 傳送請求引數 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())); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("傳送 POST 請求出現異常!"+e); e.printStackTrace(); } //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 void main(String[] args) { //傳送 GET 請求 // System.out.println(s); JcLogEntity f=getJcLogData("10.141.71.251:8080").get(1); System.out.println(f.getTitle()); } public static ArrayList<CmsUserInfo> getData(String ipport) { System.out.println(ipport); String s=HttpRequest.sendGet("http://"+ipport+"/spcms/mobile/info/getlist.jspx?pageSize=15&pageNow=1&timeStamp=1431678427563", ""); System.out.println(s); JSONArray us=JSON.parseObject(s).getJSONArray("data"); ArrayList<CmsUserInfo> al=new ArrayList<CmsUserInfo>(); for(int i=0;i<us.size();i++) { String temp=us.get(i).toString(); System.out.println(temp ); CmsUserInfo cui=(CmsUserInfo) JSON.parseObject(temp.replaceAll("GPS","gps"), CmsUserInfo.class); System.out.println(cui.getGps()); al.add(cui); } return al; //System.out.print(al.size() ); } public static List<JcLogEntity> getJcLogData(String ipport) { System.out.println(ipport); String s=HttpRequest.sendGet("http://"+ipport+"/spcms/datatransfer/getLog.jspx?pageSize=99999&timeStamp=1431678427563", ""); System.out.println(s); List<JcLogEntity> re= JSONUtils.jsonToEntityArray(s,JcLogEntity.class); return re; } 亂碼問題解決辦法: connection.setRequestProperty("Accept-Charset", "utf-8"); connection.setRequestProperty("contentType", "utf-8"); in = new BufferedReader(new InputStreamReader( connection.getInputStream(),"utf-8")); 轉自:http://www.aichengxu.com/view/54381