/**	 * OAuth 认证	 * @throws Exception	 */	public String requestYimallOAuth() throws Exception {				TrustManager[] trustAllCerts = new TrustManager[] {				   new X509TrustManager() {				      public java.security.cert.X509Certificate[] getAcceptedIssuers() {				        return null;				      }				      public void checkClientTrusted(X509Certificate[] certs, String authType) {  }				      public void checkServerTrusted(X509Certificate[] certs, String authType) {  }				   }				};					SSLContext sc;			sc = SSLContext.getInstance("SSL");						sc.init(null, trustAllCerts, new java.security.SecureRandom());			HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());			// Create all-trusting host name verifier			HostnameVerifier allHostsValid = new HostnameVerifier() {			    public boolean verify(String hostname, SSLSession session) {			      return true;			    }			};			// Install the all-trusting host verifier			HttpsURLConnection.setDefaultHostnameVerifier(allHostsValid);						URL url = new URL("");//　　你要请求的地址			HttpsURLConnection httpsURLConnection=(HttpsURLConnection)url.openConnection();			httpsURLConnection.setConnectTimeout(30000);			httpsURLConnection.setReadTimeout(30000);			httpsURLConnection.setDoOutput(true);			httpsURLConnection.setDoInput(true); 			httpsURLConnection.setUseCaches(true);   			httpsURLConnection.setRequestMethod("POST");			httpsURLConnection.connect();			int responseCode=httpsURLConnection.getResponseCode();			InputStream input=null;			if(responseCode==200){				input=httpsURLConnection.getInputStream();			}else{				input=httpsURLConnection.getErrorStream();			}			BufferedReader in = new BufferedReader(new InputStreamReader(input));			StringBuilder result=new StringBuilder();			String line=null; 			while((line=in.readLine())!=null){				result.append(line);			}						String access_token = result.toString();			System.out.println(access_token);			return "success";	}