public static String postURL(String commString, String address, String encode) {
        String rec_string = "";
        URL url = null;
        HttpURLConnection urlConn = null;
        try {
			/*得到url地址的URL類*/
            url = new URL(address);
			/*獲得開啟需要傳送的url連線*/
            urlConn = (HttpURLConnection) url.openConnection();
			/*設定連線超時時間*/
            urlConn.setConnectTimeout(30000);
			/*設定讀取響應超時時間*/
            urlConn.setReadTimeout(30000);
			/*設定post傳送方式*/
            urlConn.setRequestMethod("POST");
			/*傳送commString*/
            urlConn.setDoOutput(true);
            urlConn.setDoInput(true);
            OutputStreamWriter out;
            out = new OutputStreamWriter(urlConn.getOutputStream(), encode);
            out.write(commString);
            out.flush();
            out.close();
			/*傳送完畢 獲取返回流，解析流資料*/
            BufferedReader rd = new BufferedReader(new InputStreamReader(urlConn.getInputStream(), encode));
            StringBuffer sb = new StringBuffer();
            int ch;
            while ((ch = rd.read()) > -1) {
                sb.append((char) ch);
            }
            rec_string = sb.toString().trim();
			/*解析完畢關閉輸入流*/
            rd.close();
        } catch (Exception e) {
			/*異常處理*/
            rec_string = "-107";
            System.out.println(e);
        } finally {
            if (urlConn != null) {
				/*關閉URL連線*/
                urlConn.disconnect();
            }
        }
		/*返回響應內容*/
        return rec_string;
    }
 

上面是另一種方式的請求

下面是httpost：

HTTPPost傳送JSON：

private static final String APPLICATION_JSON = "application/json";
    
    private static final String CONTENT_TYPE_TEXT_JSON = "text/json";

public static void httpPostWithJSON(String url, String json) throws Exception {
        // 將JSON進行UTF-8編碼,以便傳輸中文
        String encoderJson = URLEncoder.encode(json, HTTP.UTF_8);
        
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);
        httpPost.addHeader(HTTP.CONTENT_TYPE, APPLICATION_JSON);
        
        StringEntity se = new StringEntity(encoderJson);
        se.setContentType(CONTENT_TYPE_TEXT_JSON);
        se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, APPLICATION_JSON));
        httpPost.setEntity(se);
        httpClient.execute(httpPost);
    }

接收HTTPPost中的JSON:

public static String receivePost(HttpServletRequest request) throws IOException, UnsupportedEncodingException {
        
        // 讀取請求內容
        BufferedReader br = new BufferedReader(new InputStreamReader(request.getInputStream()));
        String line = null;
        StringBuilder sb = new StringBuilder();
        while((line = br.readLine())!=null){
            sb.append(line);
        }

        // 將資料解碼
        String reqBody = sb.toString();
        return URLDecoder.decode(reqBody, HTTP.UTF_8);
    }