NetCore2.0
数据库：SQLite
HTML解析：HtmlAgilityPack
区划数据：http://www.stats.gov.cn/tjsj/tjbz/xzqhdm/201703/t20170310_1471429.html
用到的命令及参考网站：
https://docs.microsoft.com/zh-cn/ef/core/get-started/netcore/new-db-sqlite
dotnet add package Microsoft.EntityFrameworkCore.Sqlite
dotnet add package Microsoft.EntityFrameworkCore.Design
dotnet add package Microsoft.EntityFrameworkCore.Tools.DotNet
/*读取配置文件*/
dotnet add package Microsoft.Extensions.Configuration
dotnet add package Microsoft.Extensions.Configuration.FileExtensions
dotnet add package Microsoft.Extensions.Configuration.Json
/*生成migration */
dotnet ef migrations add InitialCreate
dotnet ef database update
https://www.cnblogs.com/linezero/p/HtmlAgilityPack.html
dotnet add package HtmlAgilityPack
