调用百度地图API进行批量经纬度获取

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Windows.Forms;
using System.Web.Script.Serialization;

namespace HTTPLocation
{

    public partial class Form1 : Form
    {
        string[] nameArray;

        public Form1()
        {
            InitializeComponent();
            readText();
        }

        public void readText()
        {
            //文件路径
            string filePath = @"C:\Users\srszz\Desktop\1.txt";
            string name;
            try
            {
                if (File.Exists(filePath))
                {
                    name = File.ReadAllText(filePath);
                    byte[] mybyte = Encoding.UTF8.GetBytes(name);
                    name = Encoding.UTF8.GetString(mybyte);
                    nameArray = name.Split(new[] { "、" }, StringSplitOptions.None);


                }
                else
                {
                    MessageBox.Show("文件不存在");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        /// <summary>
        /// GET方式发送得结果
        /// </summary>
        /// <param name="url">请求的url</param>
        public static string DoGetRequestSendData(string url)
        {
            HttpWebRequest hwRequest = null;
            HttpWebResponse hwResponse = null;

            string strResult = string.Empty;
            try
            {
                hwRequest = (System.Net.HttpWebRequest)WebRequest.Create(url);
                //hwRequest.Timeout = 30000;
                hwRequest.Method = "GET";
                hwRequest.ContentType = "application/x-www-form-urlencoded";
            }
            catch (System.Exception err)
            {

            }
            try
            {
                hwResponse = (HttpWebResponse)hwRequest.GetResponse();
                StreamReader srReader = new StreamReader(hwResponse.GetResponseStream(), Encoding.ASCII);
                strResult = srReader.ReadToEnd();
                srReader.Close();
                hwResponse.Close();
            }
            catch (System.Exception err)
            {
            }
            return strResult;
        }


        private void button1_Click(object sender, EventArgs e)
        {
            for(int i = 0; i < nameArray.Length; i  )
            {
                string url = "https://restapi.amap.com/v3/geocode/geo?key=9718f7d38804e8d1f59ba92a4e0223fe&address=河北省保定市高碑店市"   nameArray[i]   "&city=保定";
                string strResult = DoGetRequestSendData(url);
                JavaScriptSerializer js = new JavaScriptSerializer();   //实例化一个能够序列化数据的类
                Class1 list = js.Deserialize<Class1>(strResult);
                Class2 item = list.geocodes[0];
                string txt = @"{""name"":"   @""""   nameArray[i]   @""""   @","   @"""pos"":"   @"["   item.location   @"]},";
                writeTxt(txt);
                if(i == nameArray.Length - 1)
                {
                    MessageBox.Show("请求完毕");

                }
            }


        }

        public void writeTxt(string txt)
        {
            //文件路径
            string filePath = @"C:\Users\srszz\Desktop\2.txt"; ;

            //检测文件夹是否存在，不存在则创建

            //定义编码方式，text1.Text为文本框控件中的内容
            byte[] mybyte = Encoding.UTF8.GetBytes(txt);
            string mystr1 = Encoding.UTF8.GetString(mybyte);

            //写入文件
            //File.WriteAllBytes(filePath,mybyte);//写入新文件
            //File.WriteAllText(filePath, mystr1);//写入新文件
            File.AppendAllText(filePath, mystr1);//添加至文件
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }
    }
}