通过Mysql连接ASP.Net Core2.0(Code First模式)

ASP.NET Core2.0连接Mysql,首先新建项目



选择Web应用程序



选择需要身份验证:



通过Nuget安装Mysql驱动,这里推荐>Pomelo.EntityFrameworkCore.MySql(记得勾选预览版,目前只有此版本,虽然是预览,但是有rtm标识,所以放心就好)

具体使用细则,请参考:Pomelo.EntityFrameworkCore.MySql使用细则



增加Startup类中对Mysql的支持

把默认的options.UseSqlServer修改为options.UseMySql

public void ConfigureServices(IServiceCollection services)
{
//services.AddDbContext<ApplicationDbContext>(options =>
//    options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

services.AddDbContext<ApplicationDbContext>(options =>
options.UseMySql(Configuration.GetConnectionString("MySqlConnection")));//Mysql支持

services.AddIdentity<ApplicationUser, IdentityRole>()
.AddEntityFrameworkStores<ApplicationDbContext>()
.AddDefaultTokenProviders();

services.AddMvc()
.AddRazorPagesOptions(options =>
{
options.Conventions.AuthorizeFolder("/Account/Manage");
options.Conventions.AuthorizePage("/Account/Logout");
});

// Register no-op EmailSender used by account confirmation and password reset during development
// For more information on how to enable account confirmation and password reset please visit https://go.microsoft.com/fwlink/?LinkID=532713 services.AddSingleton<IEmailSender, EmailSender>();
}

Mysql实例信息:uid;root pwd:111111



打开appsettings.json文件,配置Mysql的连接字符串信息:

{
"ConnectionStrings": {
//"DefaultConnection": "Server=(localdb)\\mssqllocaldb;Database=aspnet-ASP.NETCore20ToMysql-53bc9b9d-9d6a-45d4-8429-2a2761773502;Trusted_Connection=True;MultipleActiveResultSets=true",
"MySqlConnection": "Server=localhost;database=ASP.NetCore-Mysql;uid=root;pwd=111111;"
},
"Logging": {
"IncludeScopes": false,
"LogLevel": {
"Default": "Warning"
}
}
}

运行网站,效果如下:



此时还未与数据库通信,需要触发如登录,注册等需要连接数据库的动作时,才会通过EF与数据库通信,并且发挥CodeFirst的作用,由应用程序的Model建立数据库的表结构,此处可点击Login后登录出现如下界面:



第一次运行会出现如下错误,是由于实体与数据库不统一,需要迁移所致,点击ApplyMigrations同意迁移后刷新网页即可

此时,打开Mysql数据库查看数据库是否新建成功



perfect,达到了预期效果

CodeFirst模式真是微软EF的一大利器,高效开发数据库应用必备哈