java调接口

package util;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

public class interfacetest {

//	    public static final String POST_URL = "http://112.4.27.9/mall-back/if_user/store_list";
		// 妙兜测试接口
		//public static final String POST_URL = "http://121.40.204.191:8180/mdserver/service/installLock";

	    /**
	     * 接口调用 GET
	     */
	    public static void httpURLConectionGET(String GET_URL) {
	        try {
	            URL url = new URL(GET_URL);    // 把字符串转换为URL请求地址
	            HttpURLConnection connection = (HttpURLConnection) url.openConnection();// 打开连接
	            connection.connect();// 连接会话
	            // 获取输入流
	            //GBK为编码格式，可以修改
	            BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream(), "GBK"));
	            String line;
	            StringBuilder sb = new StringBuilder();
	            while ((line = br.readLine()) != null) {// 循环读取流
	                sb.append(line);
	            }
	            br.close();// 关闭流
	            connection.disconnect();// 断开连接
	            System.out.println(sb.toString());
	            //System.out.println(new String(sb.toString().getBytes()));
	        } catch (Exception e) {
	            e.printStackTrace();
	            System.out.println("失败!");
	        }
	    }

	    /**
	     * 接口调用  POST
	     */
	    public static void httpURLConnectionPOST (String POST_URL) {
	        try {
	            URL url = new URL(POST_URL);

	            // 将url 以 open方法返回的urlConnection  连接强转为HttpURLConnection连接  (标识一个url所引用的远程对象连接)
	            HttpURLConnection connection = (HttpURLConnection) url.openConnection();// 此时cnnection只是为一个连接对象,待连接中

	            // 设置连接输出流为true,默认false (post 请求是以流的方式隐式的传递参数)
	            connection.setDoOutput(true);

	            // 设置连接输入流为true
	            connection.setDoInput(true);

	            // 设置请求方式为post
	            connection.setRequestMethod("POST");

	            // post请求缓存设为false
	            connection.setUseCaches(false);

	            // 设置该HttpURLConnection实例是否自动执行重定向
	            connection.setInstanceFollowRedirects(true);

	            // 设置请求头里面的各个属性 (以下为设置内容的类型,设置为经过urlEncoded编码过的from参数)
	            // application/x-javascript text/xml->xml数据 application/x-javascript->json对象 application/x-www-form-urlencoded->表单数据
	            // ;charset=utf-8 必须要，不然妙兜那边会出现乱码【★★★★★】
	            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");	

	            // 建立连接 (请求未开始,直到connection.getInputStream()方法调用时才发起,以上各个参数设置需在此方法之前进行)
	            connection.connect();

	            // 创建输入输出流,用于往连接里面输出携带的参数,(输出内容为?后面的内容)
	            DataOutputStream dataout = new DataOutputStream(connection.getOutputStream());

	            String app_key = "app_key="+ URLEncoder.encode("4f7bf8c8260124e6e9c6bf094951a111", "utf-8");		// 已修改【改为错误数据，以免信息泄露】
	            String agt_num = "&agt_num="+ URLEncoder.encode("10111", "utf-8");				// 已修改【改为错误数据，以免信息泄露】
	            String pid = "&pid="+ URLEncoder.encode("BLZXA150401111", "utf-8");				// 已修改【改为错误数据，以免信息泄露】
	            String departid = "&departid="+ URLEncoder.encode("10007111", "utf-8");			// 已修改【改为错误数据，以免信息泄露】
	            String install_lock_name = "&install_lock_name="+ URLEncoder.encode("南天大门", "utf-8");
	            String install_address = "&install_address="+ URLEncoder.encode("北京育新", "utf-8");
	            String install_gps = "&install_gps="+ URLEncoder.encode("116.350888,40.011001", "utf-8");
	            String install_work = "&install_work="+ URLEncoder.encode("小李", "utf-8");
	            String install_telete = "&install_telete="+ URLEncoder.encode("13000000000", "utf-8");
	            String intall_comm = "&intall_comm="+ URLEncoder.encode("一切正常", "utf-8");

	            // 格式 parm = aaa=111&bbb=222&ccc=333&ddd=444
	            String parm = app_key+ agt_num+ pid+ departid+ install_lock_name+ install_address+ install_gps+ install_work+ install_telete+ intall_comm;

	            // 将参数输出到连接
	            dataout.writeBytes(parm);

	            // 输出完成后刷新并关闭流
	            dataout.flush();
	            dataout.close(); // 重要且易忽略步骤 (关闭流,切记!) 

//	            System.out.println(connection.getResponseCode());

	            // 连接发起请求,处理服务器响应  (从连接获取到输入流并包装为bufferedReader)
	            BufferedReader bf = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
	            String line;
	            StringBuilder sb = new StringBuilder(); // 用来存储响应数据

	            // 循环读取流,若不到结尾处
	            while ((line = bf.readLine()) != null) {
//	                sb.append(bf.readLine());
	            	sb.append(line).append(System.getProperty("line.separator"));
	            }
	            bf.close();    // 重要且易忽略步骤 (关闭流,切记!)
	            connection.disconnect(); // 销毁连接
	            System.out.println(sb.toString());

	        } catch (Exception e) {
	            e.printStackTrace();
	        }
	    }

	    public static void main(String[] args) {
//	        httpURLConectionPOST("http://121.40.204.191:8180/mdserver/service/installLock");
	    	httpURLConectionGET("https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su?wd=123&json=1&p=3&sid=1438_21098_17001_22159&req=2&pbs=12306&csor=3&pwd=12&cb=jQuery110208408865132022476_1508200165647&_=1508200165650");

	    }
	}