diff --git a/Docs/学习总结.ipynb b/Docs/学习总结.ipynb
index e73b1f3..c8f0e0b 100644
--- a/Docs/学习总结.ipynb
+++ b/Docs/学习总结.ipynb
@@ -19,7 +19,7 @@
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 1,
"metadata": {
"dotnet_interactive": {
"language": "csharp"
@@ -31,7 +31,17 @@
"languageId": "polyglot-notebook"
}
},
- "outputs": [],
+ "outputs": [
+ {
+ "data": {
+ "text/html": [
+ "<div><div><strong>Restore sources</strong><ul><li><span>https://api.nuget.org/v3/index.json</span></li></ul></div><div></div><div><strong>Installed Packages</strong><ul><li><span>Microsoft.EntityFrameworkCore, 7.0.5</span></li><li><span>Microsoft.EntityFrameworkCore.InMemory, 7.0.5</span></li><li><span>Microsoft.EntityFrameworkCore.Sqlite, 7.0.5</span></li><li><span>Microsoft.EntityFrameworkCore.SqlServer, 7.0.5</span></li></ul></div></div>"
+ ]
+ },
+ "metadata": {},
+ "output_type": "display_data"
+ }
+ ],
"source": [
"//设置包源\n",
"#i \"https://api.nuget.org/v3/index.json\"\n",
@@ -50,6 +60,104 @@
"source": [
"## DbContext"
]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 5,
+ "metadata": {
+ "dotnet_interactive": {
+ "language": "csharp"
+ },
+ "polyglot_notebook": {
+ "kernelName": "csharp"
+ },
+ "vscode": {
+ "languageId": "polyglot-notebook"
+ }
+ },
+ "outputs": [
+ {
+ "data": {
+ "text/html": [
+ "<table><thead><tr><th><i>index</i></th><th>value</th></tr></thead><tbody><tr><td>0</td><td><details class=\"dni-treeview\"><summary><span class=\"dni-code-hint\"><code>Submission#6+Account</code></span></summary><div><table><thead><tr></tr></thead><tbody><tr><td>Id</td><td><div class=\"dni-plaintext\"><pre>1</pre></div></td></tr><tr><td>Code</td><td>001</td></tr><tr><td>Name</td><td>zhangsan</td></tr><tr><td>Pwd</td><td>123456</td></tr><tr><td>Age</td><td><div class=\"dni-plaintext\"><pre>25</pre></div></td></tr><tr><td>State</td><td><div class=\"dni-plaintext\"><pre>0</pre></div></td></tr></tbody></table></div></details></td></tr><tr><td>1</td><td><details class=\"dni-treeview\"><summary><span class=\"dni-code-hint\"><code>Submission#6+Account</code></span></summary><div><table><thead><tr></tr></thead><tbody><tr><td>Id</td><td><div class=\"dni-plaintext\"><pre>2</pre></div></td></tr><tr><td>Code</td><td>002</td></tr><tr><td>Name</td><td>lisi</td></tr><tr><td>Pwd</td><td>123456</td></tr><tr><td>Age</td><td><div class=\"dni-plaintext\"><pre>35</pre></div></td></tr><tr><td>State</td><td><div class=\"dni-plaintext\"><pre>0</pre></div></td></tr></tbody></table></div></details></td></tr></tbody></table><style>\r\n",
+ ".dni-code-hint {\r\n",
+ " font-style: italic;\r\n",
+ " overflow: hidden;\r\n",
+ " white-space: nowrap;\r\n",
+ "}\r\n",
+ ".dni-treeview {\r\n",
+ " white-space: nowrap;\r\n",
+ "}\r\n",
+ ".dni-treeview td {\r\n",
+ " vertical-align: top;\r\n",
+ " text-align: start;\r\n",
+ "}\r\n",
+ "details.dni-treeview {\r\n",
+ " padding-left: 1em;\r\n",
+ "}\r\n",
+ "table td {\r\n",
+ " text-align: start;\r\n",
+ "}\r\n",
+ "table tr { \r\n",
+ " vertical-align: top; \r\n",
+ " margin: 0em 0px;\r\n",
+ "}\r\n",
+ "table tr td pre \r\n",
+ "{ \r\n",
+ " vertical-align: top !important; \r\n",
+ " margin: 0em 0px !important;\r\n",
+ "} \r\n",
+ "table th {\r\n",
+ " text-align: start;\r\n",
+ "}\r\n",
+ "</style>"
+ ]
+ },
+ "metadata": {},
+ "output_type": "display_data"
+ }
+ ],
+ "source": [
+ "using Microsoft.EntityFrameworkCore;\n",
+ "using Microsoft.EntityFrameworkCore.SqlServer;\n",
+ "public class AppDbContext: DbContext\n",
+ "{\n",
+ " public DbSet<Account> Accounts {get;set;}\n",
+ "\n",
+ " protected override void OnConfiguring(DbContextOptionsBuilder builder)\n",
+ " {\n",
+ " builder\n",
+ " .UseSqlServer(@\"Server=127.0.0.1\\SQL2019;Database=EFCore7Study;User Id=sa;Password=gly-bicijinlian;Encrypt=True;TrustServerCertificate=True;\")\n",
+ " .EnableSensitiveDataLogging();\n",
+ " }\n",
+ "\n",
+ " protected override void OnModelCreating(ModelBuilder builder)\n",
+ " {\n",
+ " builder.Entity<Account>().ToTable(\"Account\");\n",
+ " base.OnModelCreating(builder);\n",
+ " }\n",
+ "}\n",
+ "\n",
+ "public class Account\n",
+ "{\n",
+ " public int Id { get; set; }\n",
+ " public string Code { get; set; }\n",
+ " public string Name { get; set; }\n",
+ " public string Pwd { get; set; }\n",
+ "\n",
+ " public int Age { get; set; }\n",
+ "\n",
+ " public int State { get; set; } \n",
+ "}\n",
+ "\n",
+ "using(var db = new AppDbContext())\n",
+ "{\n",
+ " var itmes = db.Accounts.ToList();\n",
+ "\n",
+ " itmes.Display();\n",
+ "\n",
+ "}"
+ ]
}
],
"metadata": {
diff --git a/Docs/说明.md b/Docs/说明.md
index 3b871e4..ce19423 100644
--- a/Docs/说明.md
+++ b/Docs/说明.md
@@ -1,3 +1,60 @@
# 说明
========
-EF Core 7的学习总结项目。
\ No newline at end of file
+EF Core 7的学习总结项目。
+
+## 使用 工厂对象(AddDbContextFactory)时,多构建函数时，IoC获取对象时会异常
+在使用扩展方法 AddDbContextFactory()注册服务时，如果 DbContext有多个构建函数，会在获取服务时因为不知道使用哪个构建函数而异常。
+
+解决方案：
++ 不要使用多构造函数
++ 合并成一个构建函数:比如统一使用 DbContextOptions<T> 参数，非IoC可以手动构建 DbContextOptions<T> 对象当参数
++ 使用 ActivatorUtilitiesConstructor 特性，指定IoC使用的构造函数
+```csharp
+public class AppDbContext : DbContext
+ {
+ private string? _connectString;
+
+ public AppDbContext()
+ {
+
+ }
+
+ public AppDbContext(string? connectstring, string dd = "dd")
+ {
+ _connectString = connectstring;
+ }
+
+ //指定IoC使用的构造函数
+ [ActivatorUtilitiesConstructor]
+ public AppDbContext(DbContextOptions<AppDbContext> options)
+ : base(options)
+ {
+
+ }
+
+
+ protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+ {
+ if (!optionsBuilder.IsConfigured)
+ {
+ if (string.IsNullOrWhiteSpace(_connectString))
+ {
+ _connectString = @"Server=127.0.0.1\SQL2019;Database=EFCore7Study;User Id=sa;Password=xxxx;Encrypt=True;TrustServerCertificate=True;";
+ }
+
+ optionsBuilder
+ .UseSqlServer(_connectString)
+ .EnableSensitiveDataLogging();
+ }
+ }
+
+ protected override void OnModelCreating(ModelBuilder modelBuilder)
+ {
+ modelBuilder.Entity<Account>().ToTable("Account");
+
+ base.OnModelCreating(modelBuilder);
+ }
+
+ public DbSet<Account> Accounts { get; set; }
+ }
+```
\ No newline at end of file
diff --git a/EFCore7Study.BlazorServerApp/Pages/Index.razor b/EFCore7Study.BlazorServerApp/Pages/Index.razor
index 6085c4a..4ab4055 100644
--- a/EFCore7Study.BlazorServerApp/Pages/Index.razor
+++ b/EFCore7Study.BlazorServerApp/Pages/Index.razor
@@ -1,9 +1,37 @@
@page "/"
+@using EFCore7Study.DataService;
+@using EFCore7Study.DataService.Models;
+@using Microsoft.EntityFrameworkCore;
+@inject IDbContextFactory<AppDbContext> DbFactory
<PageTitle>Index</PageTitle>
+@foreach(var account in AccountList)
+{
+ <h2>@(account.Name)</h2>
+}
+
<h1>Hello, world!</h1>
Welcome to your new app.
<SurveyPrompt Title="How is Blazor working for you?" />
+
+@code{
+ private List<Account> AccountList { get; set; } = new List<Account>();
+
+ protected override void OnInitialized()
+ {
+ AccountList = GetAccounts();
+ base.OnInitialized();
+ }
+
+ private List<Account> GetAccounts()
+ {
+ using (var context = DbFactory.CreateDbContext())
+ {
+ return context.Accounts.ToList();
+
+ };
+ }
+}
diff --git a/EFCore7Study.BlazorServerApp/Program.cs b/EFCore7Study.BlazorServerApp/Program.cs
index ada4af6..8283be9 100644
--- a/EFCore7Study.BlazorServerApp/Program.cs
+++ b/EFCore7Study.BlazorServerApp/Program.cs
@@ -1,7 +1,10 @@
using EFCore7Study.BlazorServerApp.Data;
+using EFCore7Study.DataService;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Internal;
namespace EFCore7Study.BlazorServerApp
{
@@ -16,6 +19,20 @@ namespace EFCore7Study.BlazorServerApp
builder.Services.AddServerSideBlazor();
builder.Services.AddSingleton<WeatherForecastService>();
+ //EF Core
+ var connectString = builder.Configuration.GetConnectionString("SQLServer");
+
+
+
+
+
+ builder.Services.AddDbContextFactory<AppDbContext>
+ (
+ b => b.UseSqlServer(connectString).EnableSensitiveDataLogging(), ServiceLifetime.Scoped
+ );
+
+ builder.Services.AddDbContextFactory<AppDbContext>(options => options.UseSqlServer(connectString));
+
var app = builder.Build();
// Configure the HTTP request pipeline.
diff --git a/EFCore7Study.BlazorServerApp/appsettings.json b/EFCore7Study.BlazorServerApp/appsettings.json
index 10f68b8..5ad2086 100644
--- a/EFCore7Study.BlazorServerApp/appsettings.json
+++ b/EFCore7Study.BlazorServerApp/appsettings.json
@@ -5,5 +5,8 @@
"Microsoft.AspNetCore": "Warning"
}
},
- "AllowedHosts": "*"
+ "AllowedHosts": "*",
+ "ConnectionStrings": {
+ "SQLServer": "Server=127.0.0.1\\SQL2019;Database=EFCore7Study;User Id=sa;Password=gly-bicijinlian;Encrypt=True;TrustServerCertificate=True;"
+ }
}
diff --git a/EFCore7Study.CoreConsoleApp/Program.cs b/EFCore7Study.CoreConsoleApp/Program.cs
index 580f256..d71e6fb 100644
--- a/EFCore7Study.CoreConsoleApp/Program.cs
+++ b/EFCore7Study.CoreConsoleApp/Program.cs
@@ -8,274 +8,53 @@ namespace EFCore7Study.CoreConsoleApp
{
static void Main(string[] args)
{
- AnsiConsole.Status()
- .Spinner(Spinner.Known.BouncingBar)
- .Start("测试一个", ctx =>
- {
- ctx.Spinner(Spinner.Known.BouncingBar);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Aesthetic));
-
- ctx.Spinner(Spinner.Known.Arc);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Arc));
-
- ctx.Spinner(Spinner.Known.Arrow);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Arrow));
-
- ctx.Spinner(Spinner.Known.Arrow2);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Arrow2));
-
- ctx.Spinner(Spinner.Known.Arrow3);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Arrow3));
-
- ctx.Spinner(Spinner.Known.Balloon);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Balloon));
-
- ctx.Spinner(Spinner.Known.Balloon2);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Balloon2));
-
- ctx.Spinner(Spinner.Known.BetaWave);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.BetaWave));
-
- ctx.Spinner(Spinner.Known.Bounce);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Bounce));
-
- ctx.Spinner(Spinner.Known.BouncingBall);
- Thread.Sleep(3000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.BouncingBall));
-
- ctx.Spinner(Spinner.Known.BouncingBar);
- Thread.Sleep(3000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.BouncingBar));
-
- ctx.Spinner(Spinner.Known.BoxBounce);
- Thread.Sleep(3000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.BoxBounce));
-
- ctx.Spinner(Spinner.Known.BoxBounce2);
- Thread.Sleep(3000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.BoxBounce2));
-
- ctx.Spinner(Spinner.Known.Dots8Bit);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Dots8Bit));
-
- ctx.Spinner(Spinner.Known.Christmas);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Christmas));
-
- ctx.Spinner(Spinner.Known.Circle);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Circle));
-
- ctx.Spinner(Spinner.Known.CircleHalves);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.CircleHalves));
-
- ctx.Spinner(Spinner.Known.CircleQuarters);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.CircleQuarters));
-
- ctx.Spinner(Spinner.Known.Clock);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Clock));
-
- ctx.Spinner(Spinner.Known.Default);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Default));
-
- ctx.Spinner(Spinner.Known.Dots);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Dots));
-
- ctx.Spinner(Spinner.Known.Dots2);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Dots2));
-
- ctx.Spinner(Spinner.Known.Dots8Bit);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Dots8Bit));
- //========================================================
- ctx.Spinner(Spinner.Known.Dqpb);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Dqpb));
-
- ctx.Spinner(Spinner.Known.Earth);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Earth));
-
- ctx.Spinner(Spinner.Known.Flip);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Flip));
-
- ctx.Spinner(Spinner.Known.Grenade);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Grenade));
-
- ctx.Spinner(Spinner.Known.GrowHorizontal);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.GrowHorizontal));
-
- ctx.Spinner(Spinner.Known.GrowVertical);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.GrowVertical));
-
- ctx.Spinner(Spinner.Known.Hamburger);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Hamburger));
- Thread.Sleep(2000);
-
- ctx.Spinner(Spinner.Known.Hearts);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Hearts));
-
- ctx.Spinner(Spinner.Known.Layer);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Layer));
-
- ctx.Spinner(Spinner.Known.Line);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Line));
-
- ctx.Spinner(Spinner.Known.Line2);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Line2));
-
- ctx.Spinner(Spinner.Known.Material);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Material));
-
- ctx.Spinner(Spinner.Known.Monkey);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Monkey));
-
- ctx.Spinner(Spinner.Known.Moon);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Moon));
-
- ctx.Spinner(Spinner.Known.Noise);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Noise));
-
- ctx.Spinner(Spinner.Known.Pipe);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Pipe));
-
- ctx.Spinner(Spinner.Known.Point);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Dots8Bit));
-
- ctx.Spinner(Spinner.Known.Pong);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Pong));
-
- ctx.Spinner(Spinner.Known.Runner);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Runner));
-
- ctx.Spinner(Spinner.Known.Shark);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Shark));
-
- ctx.Spinner(Spinner.Known.SimpleDots);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.SimpleDots));
-
- ctx.Spinner(Spinner.Known.SimpleDotsScrolling);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.SimpleDotsScrolling));
-
- ctx.Spinner(Spinner.Known.Smiley);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Smiley));
-
- ctx.Spinner(Spinner.Known.SquareCorners);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.SquareCorners));
-
- ctx.Spinner(Spinner.Known.Squish);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Squish));
-
- ctx.Spinner(Spinner.Known.Star);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Star));
-
- ctx.Spinner(Spinner.Known.Star2);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Star2));
-
- ctx.Spinner(Spinner.Known.Toggle);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Toggle));
-
- ctx.Spinner(Spinner.Known.Toggle2);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Toggle2));
-
- ctx.Spinner(Spinner.Known.Triangle);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Triangle));
-
- ctx.Spinner(Spinner.Known.Weather);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Weather));
-
- ctx.Spinner(Spinner.Known.Weather);
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine(nameof(Spinner.Known.Weather));
- });
+ }
+ static void ShowQuery()
+ {
AnsiConsole.Status()
- .Spinner(Spinner.Known.Balloon)
- .Start("准备查询数据库...", ctx =>
- {
- Thread.Sleep(2000);
-
- // 生成查询对象
- ctx.Status("生成查询对象...");
- AppDbContext dbContext = new AppDbContext();
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine("生成查询对象: DbContext, 完成！");
-
- // 连接数据库
- ctx.Status("正在连接到数据库服务器...");
- ctx.Spinner(Spinner.Known.Balloon);
- ctx.SpinnerStyle(Style.Parse("green"));
- Thread.Sleep(2000);
- AnsiConsole.MarkupLine("已连接到数据库服务器！");
-
-
- // 查询数据
- ctx.Status("正在查询数据...");
- ctx.Spinner(Spinner.Known.Star2);
- ctx.SpinnerStyle(Style.Parse("yellow"));
- Thread.Sleep(3000);
- AnsiConsole.MarkupLine("完成查询！");
-
-
- //输出查询结果
- ctx.Status("输出查询结果...");
- ctx.Spinner(Spinner.Known.Arrow);
- ctx.SpinnerStyle(Style.Parse("red"));
-
- dbContext.Accounts.ToList().ForEach(x =>
- {
- AnsiConsole.MarkupLine($"标识：{x.Id}，编号：{x.Code}, 姓名：{x.Name.PadRight(10)}，年龄：{x.Age}, 密码：{x.Pwd}");
- Thread.Sleep(300);
- });
-
- AnsiConsole.MarkupLine("任务完成！");
-
- });
+ .Spinner(Spinner.Known.Balloon)
+ .Start("准备查询数据库...", ctx =>
+ {
+ Thread.Sleep(2000);
+
+ // 生成查询对象
+ ctx.Status("生成查询对象...");
+ AppDbContext dbContext = new AppDbContext();
+ //Thread.Sleep(2000);
+ AnsiConsole.MarkupLine("生成查询对象: DbContext, 完成！");
+
+ // 连接数据库
+ ctx.Status("正在连接到数据库服务器...");
+ ctx.Spinner(Spinner.Known.Balloon);
+ ctx.SpinnerStyle(Style.Parse("green"));
+ //Thread.Sleep(2000);
+ AnsiConsole.MarkupLine("已连接到数据库服务器！");
+
+
+ // 查询数据
+ ctx.Status("正在查询数据...");
+ ctx.Spinner(Spinner.Known.Star2);
+ ctx.SpinnerStyle(Style.Parse("yellow"));
+ //Thread.Sleep(3000);
+ AnsiConsole.MarkupLine("完成查询！");
+
+
+ //输出查询结果
+ ctx.Status("输出查询结果...");
+ ctx.Spinner(Spinner.Known.Arrow);
+ ctx.SpinnerStyle(Style.Parse("red"));
+
+ dbContext.Accounts.ToList().ForEach(x =>
+ {
+ AnsiConsole.MarkupLine($"标识：{x.Id}，编号：{x.Code}, 姓名：{x.Name.PadRight(10)}，年龄：{x.Age}, 密码：{x.Pwd}");
+ Thread.Sleep(300);
+ });
+
+ AnsiConsole.MarkupLine("任务完成！");
+
+ });
}
}
}
\ No newline at end of file
diff --git a/EFCore7Study.DataService/AppDbContext.cs b/EFCore7Study.DataService/AppDbContext.cs
index 3fb0003..d1922ef 100644
--- a/EFCore7Study.DataService/AppDbContext.cs
+++ b/EFCore7Study.DataService/AppDbContext.cs
@@ -1,25 +1,27 @@
using EFCore7Study.DataService.Models;
using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
namespace EFCore7Study.DataService
{
+ /// <summary>
+ /// 多构造函数
+ /// 为使用工厂方式注册，加 ActivatorUtilitiesConstructor 特性
+ /// </summary>
public class AppDbContext : DbContext
{
- private string? _connectString;
+ /// <summary>
+ /// 连接字符串，可实现属性设置，避免多构造函数在Factory时，IoC异常
+ /// </summary>
+ public string? ConnectString = @"Server=127.0.0.1\SQL2019;Database=EFCore7Study;User Id=sa;Password=gly-bicijinlian;Encrypt=True;TrustServerCertificate=True;";
public AppDbContext()
{
}
- public AppDbContext(string connectstring)
- {
- _connectString = connectstring;
- }
-
- public AppDbContext(DbContextOptions<AppDbContext> options)
- : base(options)
+ public AppDbContext(DbContextOptions<AppDbContext> options) : base(options)
{
}
@@ -28,13 +30,13 @@ namespace EFCore7Study.DataService
{
if (!optionsBuilder.IsConfigured)
{
- if (string.IsNullOrWhiteSpace(_connectString))
+ if (string.IsNullOrWhiteSpace(ConnectString))
{
- _connectString = @"Server=127.0.0.1\SQL2019;Database=EFCore7Study;User Id=sa;Password=gly-bicijinlian;Encrypt=True;TrustServerCertificate=True;";
+ ConnectString = @"Server=127.0.0.1\SQL2019;Database=EFCore7Study;User Id=sa;Password=gly-bicijinlian;Encrypt=True;TrustServerCertificate=True;";
}
optionsBuilder
- .UseSqlServer(_connectString)
+ .UseSqlServer(ConnectString)
.EnableSensitiveDataLogging();
}
}
diff --git a/EFCore7Study.DataService/AppDbContext2.cs b/EFCore7Study.DataService/AppDbContext2.cs
new file mode 100644
index 0000000..21fc10a
--- /dev/null
+++ b/EFCore7Study.DataService/AppDbContext2.cs
@@ -0,0 +1,49 @@
+using EFCore7Study.DataService.Models;
+
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure.Internal;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace EFCore7Study.DataService
+{
+ /// <summary>
+ /// 多构造函数
+ /// 为使用工厂方式注册，合并为一个
+ /// </summary>
+ public class AppDbContext2 : DbContext
+ {
+ private string? _connectString;
+
+ //因为先执行的 base(options),到此处时AppDbContext2已经注册完成，连接字符串实际上是用不了的。当然换成其它参数或用在其它地方是可以的。
+ public AppDbContext2(DbContextOptions<AppDbContext2> options, string? connectString = null)
+ : base(options)
+ {
+ _connectString = connectString;
+ }
+
+
+ protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+ {
+ if (!optionsBuilder.IsConfigured)
+ {
+ if (string.IsNullOrWhiteSpace(_connectString))
+ {
+ _connectString = @"Server=127.0.0.1\SQL2019;Database=EFCore7Study;User Id=sa;Password=gly-bicijinlian;Encrypt=True;TrustServerCertificate=True;";
+ }
+
+ optionsBuilder
+ .UseSqlServer(_connectString)
+ .EnableSensitiveDataLogging();
+ }
+ }
+
+ protected override void OnModelCreating(ModelBuilder modelBuilder)
+ {
+ modelBuilder.Entity<Account>().ToTable("Account");
+
+ base.OnModelCreating(modelBuilder);
+ }
+
+ public DbSet<Account> Accounts { get; set; }
+ }
+}
\ No newline at end of file
diff --git a/EFCore7Study.DataService/AppDbContext3.cs b/EFCore7Study.DataService/AppDbContext3.cs
new file mode 100644
index 0000000..8eae800
--- /dev/null
+++ b/EFCore7Study.DataService/AppDbContext3.cs
@@ -0,0 +1,58 @@
+using EFCore7Study.DataService.Models;
+
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace EFCore7Study.DataService
+{
+ /// <summary>
+ /// 多构造函数
+ /// 使用工厂对象(AddDbContextFactory)时,因多构建函数，IoC 获取对象时会异常
+ /// </summary>
+ public class AppDbContext3 : DbContext
+ {
+ private string? _connectString;
+
+ public AppDbContext3()
+ {
+
+ }
+
+ public AppDbContext3(string? connectstring)
+ {
+ _connectString = connectstring;
+ }
+
+
+ public AppDbContext3(DbContextOptions<AppDbContext> options)
+ : base(options)
+ {
+
+ }
+
+
+ protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+ {
+ if (!optionsBuilder.IsConfigured)
+ {
+ if (string.IsNullOrWhiteSpace(_connectString))
+ {
+ _connectString = @"Server=127.0.0.1\SQL2019;Database=EFCore7Study;User Id=sa;Password=gly-bicijinlian;Encrypt=True;TrustServerCertificate=True;";
+ }
+
+ optionsBuilder
+ .UseSqlServer(_connectString)
+ .EnableSensitiveDataLogging();
+ }
+ }
+
+ protected override void OnModelCreating(ModelBuilder modelBuilder)
+ {
+ modelBuilder.Entity<Account>().ToTable("Account");
+
+ base.OnModelCreating(modelBuilder);
+ }
+
+ public DbSet<Account> Accounts { get; set; }
+ }
+}
\ No newline at end of file
diff --git a/EFCore7Study.DataService/Models/Account.cs b/EFCore7Study.DataService/Models/Account.cs
index b8bc6a3..09557fa 100644
--- a/EFCore7Study.DataService/Models/Account.cs
+++ b/EFCore7Study.DataService/Models/Account.cs
@@ -6,9 +6,9 @@
public class Account
{
public int Id { get; set; }
- public string Code { get; set; }
- public string Name { get; set; }
- public string Pwd { get; set; }
+ public string Code { get; set; } = "";
+ public string Name { get; set; } = "";
+ public string Pwd { get; set; } = "";
public int Age { get; set; }
diff --git a/EFCore7Study.WebApi/Controllers/AccountsController.cs b/EFCore7Study.WebApi/Controllers/AccountsController.cs
new file mode 100644
index 0000000..a6ad7e5
--- /dev/null
+++ b/EFCore7Study.WebApi/Controllers/AccountsController.cs
@@ -0,0 +1,26 @@
+using EFCore7Study.DataService;
+using EFCore7Study.DataService.Models;
+
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+
+namespace EFCore7Study.WebApi.Controllers
+{
+ [Route("api/[controller]/[action]")]
+ [ApiController]
+ public class AccountsController : ControllerBase
+ {
+ private readonly AppDbContext _dbContext;
+
+ public AccountsController(AppDbContext context)
+ {
+ _dbContext = context;
+ }
+
+ [HttpGet]
+ public List<Account> AllAccounts()
+ {
+ return _dbContext.Accounts.ToList();
+ }
+ }
+}
diff --git a/EFCore7Study.WebApi/Controllers/EFCore2Controller.cs b/EFCore7Study.WebApi/Controllers/EFCore2Controller.cs
new file mode 100644
index 0000000..eeb1020
--- /dev/null
+++ b/EFCore7Study.WebApi/Controllers/EFCore2Controller.cs
@@ -0,0 +1,43 @@
+using EFCore7Study.DataService;
+using EFCore7Study.DataService.Models;
+
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Internal;
+
+namespace EFCore7Study.WebApi.Controllers
+{
+ [Route("api/[controller]/[action]")]
+ [ApiController]
+ public class EFCore2Controller : ControllerBase
+ {
+ private readonly AppDbContext2 _context;
+ private readonly IDbContextFactory<AppDbContext2> _factory;
+
+ public EFCore2Controller
+ (
+ AppDbContext2 context,
+ IDbContextFactory<AppDbContext2> factory
+ )
+ {
+ _context = context;
+ _factory = factory;
+ }
+
+ [HttpGet]
+ public List<Account> GetAll()
+ {
+ return _context.Accounts.AsNoTracking().ToList();
+ }
+
+ [HttpGet]
+ public List<Account> GetAllByFactory()
+ {
+ using (var db = _factory.CreateDbContext())
+ {
+ return db.Accounts.AsNoTracking().ToList();
+ }
+ }
+ }
+}
diff --git a/EFCore7Study.WebApi/Controllers/EFCore3Controller.cs b/EFCore7Study.WebApi/Controllers/EFCore3Controller.cs
new file mode 100644
index 0000000..be18a9d
--- /dev/null
+++ b/EFCore7Study.WebApi/Controllers/EFCore3Controller.cs
@@ -0,0 +1,60 @@
+using EFCore7Study.DataService;
+using EFCore7Study.DataService.Models;
+
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Internal;
+
+namespace EFCore7Study.WebApi.Controllers
+{
+ [Route("api/[controller]/[action]")]
+ [ApiController]
+ public class EFCore3Controller : ControllerBase
+ {
+
+ private readonly IDbContextFactory<AppDbContext3> _contextFactory;
+
+ public EFCore3Controller(IDbContextFactory<AppDbContext3> contextFactory)
+ {
+ _contextFactory = contextFactory;
+ }
+
+
+ [HttpGet]
+ public List<Account> GetAll()
+ {
+ return _contextFactory.CreateDbContext().Accounts.ToList();
+ }
+
+ [HttpGet]
+ public List<Account> GetAll2()
+ {
+ return _contextFactory.CreateDbContext().Accounts.ToList();
+ }
+
+ [HttpGet]
+ public List<Account> GetAll3()
+ {
+ return _contextFactory.CreateDbContext().Accounts.ToList();
+ }
+
+ [HttpGet]
+ public List<Account> GetAll4()
+ {
+ return _contextFactory.CreateDbContext().Accounts.ToList();
+ }
+
+ [HttpGet]
+ public List<Account> GetAll5()
+ {
+ return _contextFactory.CreateDbContext().Accounts.ToList();
+ }
+
+ [HttpGet]
+ public List<Account> GetAll6()
+ {
+ return _contextFactory.CreateDbContext().Accounts.ToList();
+ }
+ }
+}
diff --git a/EFCore7Study.WebApi/Controllers/EFCoreController.cs b/EFCore7Study.WebApi/Controllers/EFCoreController.cs
new file mode 100644
index 0000000..71a7989
--- /dev/null
+++ b/EFCore7Study.WebApi/Controllers/EFCoreController.cs
@@ -0,0 +1,63 @@
+using EFCore7Study.DataService;
+using EFCore7Study.DataService.Models;
+
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace EFCore7Study.WebApi.Controllers
+{
+ [Route("api/[controller]/[action]")]
+ [ApiController]
+ public class EFCoreController : ControllerBase
+ {
+ private readonly AppDbContext _connect;
+ private readonly IDbContextFactory<AppDbContext> _factory;
+
+ public EFCoreController(AppDbContext context, IDbContextFactory<AppDbContext> factory)
+ {
+ _connect = context;
+ _factory = factory;
+ }
+
+
+ [HttpGet]
+ public List<Account> GetAll()
+ {
+ return _connect.Accounts.ToList();
+ }
+
+ [HttpGet]
+ public List<Account> GetAllByFactory()
+ {
+ using (var db = _factory.CreateDbContext())
+ {
+ return db.Accounts.ToList();
+ }
+ }
+
+ [HttpGet]
+ public List<Account> GetAll3()
+ {
+ return _connect.Accounts.ToList();
+ }
+
+ [HttpGet]
+ public List<Account> GetAll4()
+ {
+ return _connect.Accounts.ToList();
+ }
+
+ [HttpGet]
+ public List<Account> GetAll5()
+ {
+ return _connect.Accounts.ToList();
+ }
+
+ [HttpGet]
+ public List<Account> GetAll6()
+ {
+ return _connect.Accounts.ToList();
+ }
+ }
+}
diff --git a/EFCore7Study.WebApi/EFCore7Study.WebApi.csproj b/EFCore7Study.WebApi/EFCore7Study.WebApi.csproj
index d6f9db3..7fbf2db 100644
--- a/EFCore7Study.WebApi/EFCore7Study.WebApi.csproj
+++ b/EFCore7Study.WebApi/EFCore7Study.WebApi.csproj
@@ -12,4 +12,8 @@
<PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
</ItemGroup>
+ <ItemGroup>
+ <ProjectReference Include="..\EFCore7Study.DataService\EFCore7Study.DataService.csproj" />
+ </ItemGroup>
+
</Project>
diff --git a/EFCore7Study.WebApi/Program.cs b/EFCore7Study.WebApi/Program.cs
index 2cc1c2d..137f58e 100644
--- a/EFCore7Study.WebApi/Program.cs
+++ b/EFCore7Study.WebApi/Program.cs
@@ -1,3 +1,7 @@
+using EFCore7Study.DataService;
+
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.SqlServer;
namespace EFCore7Study.WebApi
{
@@ -14,9 +18,132 @@ namespace EFCore7Study.WebApi
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();
- var app = builder.Build();
+ //注册服务：EFCore
+ #region 注册服务：EFCore
+ var connectString = builder.Configuration.GetConnectionString("SQLServer");
+ var contextOptionsBuilder = new DbContextOptionsBuilder<AppDbContext>()
+ .UseSqlServer(connectString)
+ .EnableSensitiveDataLogging();
+ var contextOptions = contextOptionsBuilder.Options;
+
+ //方式一：默认构造，使用内部数据连接
+ //builder.Services.AddScoped(provider => new AppDbContext());
+
+ //方式二: 设置连接字符串属性
+ //builder.Services.AddScoped(provider =>
+ //{
+ // var db = new AppDbContext();
+ // db.ConnectString = connectString;
+ // return db;
+ //});
+
+ //方法三：使用 DbContextOptions 的构建函数 [比较推荐]
+ //builder.Services.AddScoped<AppDbContext>(provider => new AppDbContext(contextOptions));
+
+ //方式四：使用 AddDbContext 扩展方法 [官方推荐]
+ //小问题：会覆盖之前方法的服务注册，猜测内部进行过去重复处理过，要验证请使用 GetServices 获取所有注册的服务。
+ //解决：方法三放在方法四后面
+ //builder.Services.AddDbContext<AppDbContext>(option =>
+ //{
+ // //从配置中获取连接字符串
+ // option.UseSqlServer(connectString)
+ // .EnableSensitiveDataLogging();
+ //});
+
+ //方式五: 使用 DbContextFactory 工厂
+ //注意：
+ // 1、此方法与方法四都是注册的 AppDbContext对象，方法四默认为Scoped,此方式默认为单例，两者的冲突导致异常
+ // 2、此方法与方法四，都会覆盖之前的 AppDbContext 注册
+ //解决：
+ // 1、此方法不与方法4同用，如果要同时使用，请使用方法1-3
+ // 2、使此方法与方法四，应用相同生命周期
+ //builder.Services.AddDbContextFactory<AppDbContext>(optionBuilder =>
+ //{
+ // optionBuilder.UseSqlServer(connectString)
+ // .EnableSensitiveDataLogging();
+ //});
+
+ //使用自定的覆盖工厂的AppDbContext,但工厂本身的IDbContextFactory<AppDbContext>不会覆盖，可以分开使用。
+ //builder.Services.AddScoped<AppDbContext>(provider => new AppDbContext(contextOptions));
+
+ //方式六：使用 DbContextPool 池
+ builder.Services.AddDbContextPool<AppDbContext>((provider, optionBuilder) =>
+ {
+ //provider.GetRequiredService<AppDbContext>();
+ optionBuilder.UseSqlServer(connectString)
+ .EnableSensitiveDataLogging();
+ }, poolSize: 2048);
+
+ //方式七：使用连接池的工厂
+ builder.Services.AddPooledDbContextFactory<AppDbContext>((serviceProvider, optionBuilder) =>
+ {
+ //serviceProvider.GetRequiredService<AppDbContext>();
+
+ optionBuilder.UseSqlServer(connectString)
+ .EnableSensitiveDataLogging();
+ }, poolSize: 1024);
+
+ //使用自定的覆盖工厂的AppDbContext,但工厂本身的IDbContextFactory<AppDbContext>不会覆盖，可以分开使用。
+ builder.Services.AddScoped(provider => new AppDbContext());
+
+ //获取所有注册的服务(可没查看是否覆盖注册)
+ //var dd = builder?.Services?.BuildServiceProvider().GetServices<AppDbContext>();
+ #endregion
+
+ #region 注册服务：EFCore2
+
+ var contextOptionBuilder2 = new DbContextOptionsBuilder<AppDbContext2>()
+ .UseSqlServer(connectString)
+ .EnableSensitiveDataLogging();
+ DbContextOptions<AppDbContext2>? contextOptions2 = contextOptionBuilder2.Options;
+
+ //方法：使用 统一构建函数
+ //builder.Services.AddScoped<AppDbContext2>(provider => new AppDbContext2(contextOptions));
+ //或者
+ builder?.Services.AddScoped(provider => new AppDbContext2(contextOptions2, connectString));
+
+ //方式：使用 AddDbContext 扩展方法 [官方推荐]
+ //builder.Services.AddDbContext<AppDbContext2>((server, option) =>
+ //{
+ // //从配置中获取连接字符串
+ // //builder.Configuration.GetConnectionString("SQLServer");
+
+ // //设置
+ // option.UseSqlServer(connectString)
+ // .EnableSensitiveDataLogging();
+ //});
+
+ //方式: 使用 DbContextFactory 工厂
+ //builder.Services.AddDbContextFactory<AppDbContext2>(optionBuilder =>
+ //{
+ // optionBuilder.UseSqlServer(connectString)
+ // .EnableSensitiveDataLogging();
+ //}, ServiceLifetime.Scoped);
+
+ //或者
+ //builder.Services.AddDbContextFactory<AppDbContext2>((provider, builder) =>
+ //{
+
+
+ //}, ServiceLifetime.Scoped);
+
+ //方式：使用 DbContextPool 池
+ //builder.Services.AddDbContextPool<AppDbContext2>(optionBuilder =>
+ //{
+ // optionBuilder.UseSqlServer(connectString)
+ // .EnableSensitiveDataLogging();
+ //});
+
+ //方式：使用连接池的工厂
+ //builder.Services.AddPooledDbContextFactory<AppDbContext2>(optionBuilder =>
+ //{
+ // optionBuilder.UseSqlServer(connectString)
+ // .EnableSensitiveDataLogging();
+ //});
+ #endregion
+
+ var app = builder!.Build();
- // Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
app.UseSwagger();
diff --git a/EFCore7Study.WebApi/appsettings.json b/EFCore7Study.WebApi/appsettings.json
index 10f68b8..5ad2086 100644
--- a/EFCore7Study.WebApi/appsettings.json
+++ b/EFCore7Study.WebApi/appsettings.json
@@ -5,5 +5,8 @@
"Microsoft.AspNetCore": "Warning"
}
},
- "AllowedHosts": "*"
+ "AllowedHosts": "*",
+ "ConnectionStrings": {
+ "SQLServer": "Server=127.0.0.1\\SQL2019;Database=EFCore7Study;User Id=sa;Password=gly-bicijinlian;Encrypt=True;TrustServerCertificate=True;"
+ }
}