百度MapAPI之地理编码

import pymysql
import requests
import json
import redef getLocation():
    #数据库连接
    conn = pymysql.Connect(host=‘localhost‘,
                           port=3306,
                           user=‘root‘,
                           passwd=‘root‘,
                           db=‘AnalyseBusiness‘,
                           charset=‘utf8‘)
    try:
        # 获取游标
        cur = conn.cursor()
        # 执行sql语句  选择经纬度为空的记录
        cur.execute(‘select * from BusinessInfo where longitude is null or latitude is null‘)
        # 取得select返回的记录
        data = cur.fetchall()
        for d in data:
            # url = "http://api.map.baidu.com/geocoder/v2/?address=天安门&city=北京&output=json&ak=EsZB0Gz6IFXqj6OGBN951ROOOdzfEXXx"
            # 将address和city加入构成访问url   get请求
            url = "http://api.map.baidu.com/geocoder/v2/?address=" + d[0] + "&city=" + d[
                1] + "&output=json&ak=EsZB0Gz6IFXqj6OGBN951ROOOdzfEXXx"
            response = requests.get(url)

            ## 正则表达式获取经纬度  若查询无相关结果  取值异常  if判断list是否为空  为空设置经纬度为999作为标识
            text = response.text
            pattern_lng = "lng\":(.*?),"
            pattern_lat = "lat\":(.*?)}"
            lng = re.findall(pattern_lng, text)
            lat = re.findall(pattern_lat, text)
            if lng or lat:
                data = (lng[0], lat[0])
            else:
                # 纬度：从赤道向北和向南，各分90°，北纬为正数，南纬为负数
                # 经度：向东到180°或向西到180°
                # 若查询不到  存入非法经纬度值 作为标识
                data = ("999", "999")
            sql = "update BusinessInfo set longitude=‘%s‘, latitude=‘%s‘ WHERE address=‘" + d[0] + "‘"
            cur = conn.cursor()
            cur.execute(sql % data)
            conn.commit()
        cur.close()
        conn.close()
    except Exception:
        conn.rollback()
        conn.close()
        print("定位失败")
if __name__ == ‘__main__‘:
    getLocation()

import requests
import re
import json


def addCity():
    try:
        print("百度坐标")
        url = "http://api.map.baidu.com/geocoder/v2/?address=大雁塔&city=陕西省西安市&output=json&ak=EsZB0Gz6IFXqj6OGBN951ROOOdzfEXXx"
        response = requests.get(url)
        text = response.text
        print(type(text))
        pattern_lng = "lng\":(.*?),"
        pattern_lat = "lat\":(.*?)}"
        lng = re.findall(pattern_lng, text)
        lat = re.findall(pattern_lat, text)
        print("lng:" + lng[0])
        print("lat:" + lat[0])
        print("国测局（GCJ02）坐标")
        url1 = "http://api.map.baidu.com/geoconv/v1/?coords=" + lng[0] + "," + lat[
            0] + "&from=3&to=5&ak=EsZB0Gz6IFXqj6OGBN951ROOOdzfEXXx"
        text2 = requests.get(url1).text
        pattern_x = "x\":(.*?),"
        pattern_y = "y\":(.*?)}"
        x = re.findall(pattern_x, text2)
        y = re.findall(pattern_y, text2)
        print("x:" + x[0])
        print("y:" + y[0])
    except Exception:
        print("error")


if __name__ == ‘__main__‘:
    addCity()