本文来源:V型知识库 微信蓝牙设备开发频道
package com.wepayweb.weixin.util.device; /*** * V型知识库 www.vxzsk.com */ import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; public class DeviceTest { public static String sendGet(String url, String charset, int timeout) { String result = ""; try { URL u = new URL(url); try { URLConnection conn = u.openConnection(); conn.connect(); conn.setConnectTimeout(timeout); BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), charset)); String line=""; while ((line = in.readLine()) != null) { result = result + line; } in.close(); } catch (IOException e) { return result; } } catch (MalformedURLException e) { return result; } return result; } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub String access_token="";// String product_id=""; String data = DeviceTest.sendGet("https://api.weixin.qq.com/device/getqrcode?access_token="+access_token+"&product_id="+product_id, "utf-8", 30000); System.out.println("获取设备的deviceid和二维码:"+data); } } 执行main方法即可，access_token 和product_id 自行获取，产品的id号 可登陆公众号管理平台 硬件列表查询。获取的二维码 是个地址字符串 需要读者用二维码生成器生成图片
