yeelink HTTP格式学习_yeelink打不开-优快云博客

本文链接：https://blog.youkuaiyun.com/gujintong1110/article/details/40932543

本文介绍了一个简单的Java程序实现与Yeelink物联网云平台的通信过程。该程序通过HTTP协议查询设备数据点，并展示了从DNS解析到HTTP响应接收的完整流程。

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最近在网上接触了开源硬件Arduino，觉得很好玩，就弄了个板子玩玩，进而接触的yeelink 。yeelink是一个很好玩的物联网云平台，通过HTTP协议发送接收。由于本人对HTTP协议不熟悉，遂通过实际代码学习yeelink通信原理。

JAVA实现的简单测试代码：

发送一个查询设备数据点的HTTP请求，

服务器回复所查询的设备信息。

三个步骤：第一部分，进行DNS地址解析；第二部分，发送HTTP请求；第三部分，接收HTTP响应。

输出结果：

api.yeelink.net/42.96.164.52
GET /v1.1/device/15527/sensor/26738/datapoints HTTP/1.1
U-ApiKey: 29f95415ec8xxxxxxxxxxxxxxxxxxxx
Host: api.yeelink.net

HTTP/1.1 200 OK
Server: nginx/1.1.19
Date: Sat, 08 Nov 2014 15:45:10 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
X-Powered-By: PHP/5.3.10-1ubuntu3.6

55
{"value":1,"timestamp":"2014-11-08T22:18:08","sensor_id":"26738","device_id":"15527"}
0

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package HTTPTEST;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;


public class MAIN {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
<span style="white-space:pre">	</span>String host_name = "api.yeelink.net";
	 // HTTP请求  http://api.yeelink.net/v1.1/device/15527/sensor/26738/datapoints
	String send_buf = "GET /v1.1/device/15527/sensor/26738/datapoints HTTP/1.1\r\nU-ApiKey: xxxxxxxxxxxxxxxx\r\nHost: api.yeelink.net\r\n\r\n";
        char[] cbuf = null;
        cbuf = new char[1024];		
	InetAddress myServer = null;
		
	//DNS解析出IP
	myServer = InetAddress.getByName(host_name);
	System.out.println(myServer);
	//创建套接字
	Socket socket = new Socket(myServer, 80);
	//创建套接字读写流
        BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true);
        //发送请求
        out.println(send_buf);
        System.out.print(send_buf);

        //读服务器返回值
        in.read(cbuf);
        System.out.println(cbuf);
		
	}

}

参考博客：http://blog.youkuaiyun.com/xukai871105/article/details/17096319

http://blog.youkuaiyun.com/xukai871105/article/details/8607338