Java-簡單的 傳送http get/post請求 呼叫介面/方法
阿新 • • 發佈:2019-01-25
例子如下:
1.請求引數
srequestUrl 是你要傳送的介面
引數用map 存起來
sRet 是返回值 如果傳送的介面有的話就寫
然後呼叫 NetUtils.requset請求 (介面,引數,get/post(選擇一種傳送方式))
String sRequestUrl ="http://weiyi/xxx/xxx/xxxx"; Map<String, Object> params = new HashMap<String, Object>(); params.put("wishing","恭喜你獲得大學獎學金!"); params.put("act_name","XX大學"); params.put("remark","紅包提現"); String sRet = NetUtils.request(sRequestUrl, params, "POST");
import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLEncoder; import java.util.Map; public class NetUtils { public static final String DEF_CHATSET = "UTF-8"; public static final int DEF_CONN_TIMEOUT = 30000; public static final int DEF_READ_TIMEOUT = 30000; public static String userAgent = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36"; public static String request(String strUrl, Map<String, Object> params, String method) throws Exception { HttpURLConnection conn = null; BufferedReader reader = null; String rs = null; try { StringBuffer sb = new StringBuffer(); if (method == null || method.equals("GET")) { strUrl = strUrl + "?" + urlencode(params); } URL url = new URL(strUrl); conn = (HttpURLConnection) url.openConnection(); if (method == null || method.equals("GET")) { conn.setRequestMethod("GET"); } else { conn.setRequestMethod("POST"); conn.setDoOutput(true); } conn.setRequestProperty("User-agent", userAgent); conn.setUseCaches(false); conn.setConnectTimeout(DEF_CONN_TIMEOUT); conn.setReadTimeout(DEF_READ_TIMEOUT); conn.setInstanceFollowRedirects(false); conn.connect(); if (params != null && method.equals("POST")) { try { DataOutputStream out = new DataOutputStream(conn.getOutputStream()); out.writeBytes(urlencode(params)); } catch (Exception e) { e.printStackTrace(); } } InputStream is = conn.getInputStream(); reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET)); String strRead = null; while ((strRead = reader.readLine()) != null) { sb.append(strRead); } rs = sb.toString(); } catch (IOException e) { e.printStackTrace(); } finally { if (reader != null) { reader.close(); } if (conn != null) { conn.disconnect(); } } return rs; } public static String requestUrl(String strUrl, Map<String, Object> params) throws Exception { HttpURLConnection conn = null; BufferedReader reader = null; String rs = null; try { StringBuffer sb = new StringBuffer(); URL url = new URL(strUrl + "?" + urlencode(params)); conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); conn.setRequestProperty("User-agent", userAgent); conn.setUseCaches(false); conn.setConnectTimeout(DEF_CONN_TIMEOUT); conn.setReadTimeout(DEF_READ_TIMEOUT); conn.setInstanceFollowRedirects(false); conn.connect(); InputStream is = conn.getInputStream(); reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET)); String strRead = null; while ((strRead = reader.readLine()) != null) { sb.append(strRead + "\r\n"); } rs = sb.toString(); } catch (IOException e) { e.printStackTrace(); } finally { if (reader != null) { reader.close(); } if (conn != null) { conn.disconnect(); } } return rs; } // 將map型轉為請求引數型 public static String urlencode(Map<String, Object> data) { StringBuilder sb = new StringBuilder(); for (Map.Entry<String, Object> i : data.entrySet()) { try { sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue() + "", "UTF-8")).append("&"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } } return sb.toString(); } }