JAVA get, post (body) 요청

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.security.MessageDigest;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import net.sf.json.JSONObject;

public class TOOL {
     
	
	public static void main(String avg[]) {
     
		System.out.println(
				"///\r
" + 
				"____  ___.__                 ________           \r
" + 
				"\\   \\/  /|__|_____     ____  \\______ \\  _____   \r
" + 
				" \\     / |  |\\__  \\   /    \\  |    |  \\ \\__  \\  \r
" + 
				" /     \\ |  | / __ \\_|   |  \\ |    `   \\ / __ \\_\r
" + 
				"/___/\\  \\|__|(____  /|___|  //_______  /(____  /\r
" + 
				"      \\_/         \\/      \\/         \\/      \\/ \r
" + 
				"\r
" + 
				"//");
	}
	
	
	
	/**
     *    URL  GET     
     * 
     * @param url
     *                 URL
     * @param param
     *                ，        name1=value1&name2=value2    。
     * @return URL             
     */
    public static JSONObject sendGet(String urlNameString) {
     
        String result = "";
        BufferedReader in = null;
        try {
     
//            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            //    URL     
            URLConnection connection = realUrl.openConnection();
            //          
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            connection.setRequestProperty("Accept-Charset", "utf-8");
            connection.setRequestProperty("contentType", "utf-8");
            //        
            connection.connect();
            //          
            Map<String, List<String>> map = connection.getHeaderFields();
            //           
            for (String key : map.keySet()) {
     
             //   System.out.println(key + "--->" + map.get(key));
            }
            //    BufferedReader      URL   
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream(),"utf-8"));
            String line;
            while ((line = in.readLine()) != null) {
     
                result += line;
            }
        } catch (Exception e) {
     
            System.out.println("  GET      ！" + e);
            e.printStackTrace();
        }
        //   finally       
        finally {
     
            try {
     
                if (in != null) {
     
                    in.close();
                }
            } catch (Exception e2) {
     
                e2.printStackTrace();
            }
        }
        System.out.println("GET    ："+urlNameString);
        System.out.println("GET    ："+result);
        return JSONObject.fromObject(result);
    }
    
    

    /**
     *     URL   POST     
     * 
     * @param url
     *                  URL
     * @param param
     *                ，        name1=value1&name2=value2    。
     * @return             
     */
    public static JSONObject sendPost(String url, JSONObject param) {
     
    	PrintWriter out = null;
		BufferedReader in = null;
		String result = "";
		try {
     
			URL realUrl = new URL(url);
			//    URL     
			URLConnection conn = realUrl.openConnection();
			//          
//        Content-Type:application/json;charset=UTF-8 Accept:application/json, text/javascript, */*; q=0.01
			conn.setRequestProperty("Content-Type", "aapplication/json");
			conn.setRequestProperty("charset", "UTF-8");
			conn.setRequestProperty("Accept", "application/json, text/javascript, */*");
			conn.setRequestProperty("q", "0.01");
			conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			//   POST          
			conn.setDoOutput(true);
			conn.setDoInput(true);
			//   URLConnection        
			// out = new PrintWriter(conn.getOutputStream());
			out = new PrintWriter(new OutputStreamWriter(conn.getOutputStream(), "utf-8"));
			//       
			out.print(param.toString());
			// flush      
			out.flush();
			//   BufferedReader      URL   
			// in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
			in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
			String line;
			while ((line = in.readLine()) != null) {
     
				result += line;
			}
		} catch (Exception e) {
     
			System.out.println("   POST       ！" + e);
			e.printStackTrace();
		}
		//   finally       、   
		finally {
     
			try {
     
				if (out != null) {
     
					out.close();
				}
				if (in != null) {
     
					in.close();
				}
			} catch (IOException ex) {
     
				ex.printStackTrace();
			}
		}
        System.out.println("POST    ："+url);
        System.out.println("POST    ："+param);
        System.out.println("POST    ："+result);
        if(isJsonObject(result)) {
     
        	return JSONObject.fromObject(result);
        }else {
     
        	return JSONObject.fromObject("{\"errcode\":\"500\",\"msg\":\"     JSON,    ："+result+"\"}");
        }
        
    }    
    /**
    *             json  
    * @param content
    * @return
    */
    public static boolean isJsonObject(String content) {
     
        //       ，    StringUtils.isEmpty(),   content "  "      ，JSONObject.parseObject      ，
        //    ，         。  content             ，     JSON         。
        if(content.trim()==""||content.trim().length()<=0){
     
        	return false;
       }
        try {
     
            JSONObject jsonStr = JSONObject.fromObject(content);
            return true;
        } catch (Exception e) {
     
            return false;
        }
    }
   
}