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类*/
            url = new URL(address);
			/*获得打开需要发送的url连接*/
            urlConn = (HttpURLConnection) url.openConnection();
			/*设置连接超时时间*/
            urlConn.setConnectTimeout(30000);
			/*设置读取响应超时时间*/
            urlConn.setReadTimeout(30000);
			/*设置post发送方式*/
            urlConn.setRequestMethod("POST");
			/*发送commString*/
            urlConn.setDoOutput(true);
            urlConn.setDoInput(true);
            OutputStreamWriter out;
            out = new OutputStreamWriter(urlConn.getOutputStream(), encode);
            out.write(commString);
            out.flush();
            out.close();
			/*发送完毕 获取返回流，解析流数据*/
            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();
			/*解析完毕关闭输入流*/
            rd.close();
        } catch (Exception e) {
			/*异常处理*/
            rec_string = "-107";
            System.out.println(e);
        } finally {
            if (urlConn != null) {
				/*关闭URL连接*/
                urlConn.disconnect();
            }
        }
		/*返回响应内容*/
        return rec_string;
    }

下面是httpost：

HTTPPost发送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 {
         //  将JSON进行UTF-8编码,以便传输中文
        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 {
        
         //  读取请求内容
        BufferedReader br =  new BufferedReader( new InputStreamReader(request.getInputStream()));
        String line =  null;
        StringBuilder sb =  new StringBuilder();
         while((line = br.readLine())!= null){
            sb.append(line);
        }

         //  将资料解码
        String reqBody = sb.toString();
         return URLDecoder.decode(reqBody, HTTP.UTF_8);
    }