java訪問外部介面 簡單實現

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 1 /*使用時注意字元集 "GBK""UTF-8"*/ 2 public static String visitPost(String urlStr, String code) { 3         try{ 4             URL url = new URL(urlStr); 5             HttpURLConnection con = (HttpURLConnection)url.openConnection(); 6             con.setRequestMethod("GET"); 7             con.connect(); 8             BufferedReader reader = new BufferedReader( 9                                         new InputStreamReader(10                                                 con.getInputStream(),code));));11             String line;12             StringBuffer buffer = new StringBuffer();13             while((line = reader.readLine()) != null) {14                 buffer.append(line);15             }16             reader.close();17             con.disconnect();18             String res = buffer.toString();19             return res;20         } catch(Exception e) {21             e.printStackTrace();22         }23         return null;24     }

 

java訪問外部介面 簡單實現