java实现调用git接口 java调用接口get请求

对于如何调用第三方接口还是有些模糊,所以记录一下,上代码

package com.zhang.miaodou;

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 DemoTest1 {

public static final String GET_URL = "http://112.4.27.9/mall-back/if_user/store_list?storeId=32";

// 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() {
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

BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));

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());

} catch (Exception e) {

e.printStackTrace();

System.out.println("失败!");

}

}

 
/**

* 接口调用 POST

*/

public static void httpURLConnectionPOST () {

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) {

// httpURLConectionGET();

httpURLConnectionPOST();

}
}

只使用了POST请求方法，GET没有用，为了保证代码完整性所以没有删除GET请求代码 
    返回结果：

{
"status" : "fail",

"code" : "ERR001",

"msg" : "商户10111不存在"

}