Python实现微信控制Android App定位并转发至服务器
本文介绍如何利用Python搭建服务器,通过微信公众号指令控制Android App获取位置信息。核心思路包括使用Socket通信通知App发送经纬度,结合高德API转换坐标,并将最终位置信息通过微信服务器接口返回给用户,实现远程定位查看功能。
项目背景与开发思路
出于对女友安全的考虑,我开发了一款具备定位功能并通过服务器进行数据转发的应用。由于刚开始学习Python,并未采用面向对象编程的方式,而是全程使用过程式开发,导致代码结构略显臃肿,但这恰好是一个学习Python的好机会。
系统工作流程与实现细节
最终效果是:在微信公众号中输入特定指令(例如“我要知道你的位置”),手机端的位置信息便会显示出来。主要思路如下:首先由App实现定位功能;当微信发送消息时,消息从微信服务器转发至开发者服务器,随后通过Socket发送指定消息通知App(如“I need your location”);App接收到消息后,将定位数据发送至开发服务器(App通过Service实现后台全程运行)。由于定位数据为经纬度,起初使用高德API,但发现谷歌地球定位更为准确(可能与Android内置定位有关),因此进行了不同地图经纬度的转换,最终将位置信息发送给微信服务器。
服务器核心代码实现
import socket
import threading
import os
import requests
from flask import Flask
from flask import request
from bs4 import BeautifulSoup
import json
global sock
#实现通过微信控制手机app定位发送给服务器显示位置信息
loca = "welcome"
app = Flask(__name__)
#搭建web服务器通过socket发送消息给app索取定位信息,然后转发给微信服务器
@app.route("/wx_check",methods=["POST","GET"]) #这里用了一个Web框架 "/wx_check" 是你在微信中填的开发者服务器路径
def application():
openID = request.args['openid'] # 微信发的,详见开发者文档
soup = BeautifulSoup(request.data,"html.parser")
content = soup.find("content") # content 是微信用户发的消息,可用来验证用户
sock.send(b"getlocation") # 发送信息通知android
global loca
while True: #手动阻塞
if loca != "welcome":
break
back = loca
loca = "welcome"
return """
<xml>
<ToUserName>%s</ToUserName>
<FromUserName>qqmsssssssss</FromUserName>
<CreateTime>12345678</CreateTime>
<MsgType>text</MsgType>
<Content>%s</Content>
</xml>"""%(openID,back)
def start():
app.run('0.0.0.0',80)
threading.Thread(target=start,args=()).start()
# 与app进行socket连接 接受定位信息 另外用到经纬度兼容转换API 和经纬度转位置API
def tcplink(sock,addr):
try:
print('Accept new connection from %s:%s...' % addr)
while True:
sock.setblocking(True)
data = sock.recv(1024)
location = data.decode('utf-8')
print("client:"+location)
# 以下进行经纬度 地图信息的转换 loca为app所在地址接上面的 堵塞
if location != "":
global loca
print(location)
lis = location.split(",")
location = "%s,%s"%(lis[1],lis[0])
print(location)
xml = requests.get("http://api.gpsspg.com/convert/coord/?oid=xxxx&key=xxxxxxxxxxxxxxxxxx&from=0&to=3&latlng=%s&output=xml"%location)
soup = BeautifulSoup(xml.text,"html.parser")
print(soup.text)
lat= soup.find("lat").string
lng= soup.find("lng").string
location = "%s,%s"%(lng,lat)
print("after"+location)
a = requests.get("http://restapi.amap.com/v3/geocode/regeo?key=xxxxxxxxxxxxxxxxx&location="+location)
loca = a.text
obj = json.loads(loca)
loca = obj["regeocode"]["formatted_address"]
else:
print("socket is close,waiting new accept")
sock.close()
break
except Exception as e:
location = "raise error"
finally:
pass
try:
s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.bind(('0.0.0.0',9999))
s.listen(10)
print('waiting to connect')
while True:
sock,addr = s.accept() #等待app来连接
t = threading.Thread(target=tcplink,args=(sock,addr))
t.start()
finally:
print("ending")
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091
以下是android端代码:
# 获取定位,其实就是获取经纬度
private Location getLastKnownLocation() {
LocationManager mLocationManager = (LocationManager)getApplicationContext().getSystemService(LOCATION_SERVICE);
List<String> providers = mLocationManager.getProviders(true);
Location bestLocation = null;
for (String provider : providers) {
Location l = mLocationManager.getLastKnownLocation(provider);
if (l == null) {
continue;
}
if (bestLocation == null || l.getAccuracy() < bestLocation.getAccuracy()) {
// Found best last known location: %s", l);
bestLocation = l;
}
}
return bestLocation;
}
String provider;
public void GetLocation(){
LocationManager mLocationManager;
Location location = getLastKnownLocation();
// Log.d("TAG", provider.toString());
Log.d("TAG", location.toString());
if (location != null) {
//获取当前位置,这里只用到了经纬度
String string =location.getLongitude() + ","+ location.getLatitude();
try {
OutputStream outputStream = socket.getOutputStream();
PrintWriter writer = new PrintWriter(outputStream);
writer.write(string);
writer.flush();
// writer.close();
// socket.shutdownOutput();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
@SuppressLint("ShowToast") public void Connect(){
try {
socket = new Socket();
socket.connect(new InetSocketAddress("xxx.xxx.xxx.xxx",9999));
while (true) {
Log.d("TAG", socket.isConnected()+"");
InputStream stream = socket.getInputStream();
byte[] b = new byte[11];
stream.read(b);
String sb = new String(b);
if(sb.equalsIgnoreCase("getlocation")){
GetLocation();
}else
{
OutputStream outoStream = socket.getOutputStream();
outoStream.write("error code".getBytes());
socket.shutdownOutput();
}
}
} catch (IOException e) {
// TODO Auto-generated catch block
Log.d("TAG", "error");
e.printStackTrace();
}
}
总结
总结
以上介绍了通过Python控制微信实现App定位、发送至个人服务器再转发至微信服务器接收位置信息的完整流程,希望对大家有所帮助。如有任何疑问,欢迎留言,小编会及时回复。在此非常感谢大家对本站网站的支持!如果你觉得本文对你有帮助,欢迎转载,烦请注明出处,谢谢!
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