ABP框架—后台：创建实体类Entity(7)

我不是女神ヾ 2021-11-23 02:52 335阅读 0赞

### 一、首先创建一个数据库表 ###

如图：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzE2OTk4OTQ1_size_16_color_FFFFFF_t_70][]

说明：此表为菜单表，结构和数据来源于前端项目src\\router\\router.ts中的appRouters值

SQL脚本如下：

/****** Object:  Table [dbo].[Sys_Menu]    Script Date: 2019/07/25 17:36:01 ******/
    SET ANSI_NULLS ON
    GO
    SET QUOTED_IDENTIFIER ON
    GO
    CREATE TABLE [dbo].[Sys_Menu](
        [Id] [int] IDENTITY(1,1) NOT FOR REPLICATION NOT NULL,
        [Path] [nvarchar](50) NOT NULL,
        [Name] [nvarchar](50) NOT NULL,
        [Permission] [nvarchar](50) NOT NULL,
        [Meta] [nvarchar](200) NOT NULL,
        [Title] [nvarchar](50) NOT NULL,
        [Icon] [nvarchar](50) NOT NULL,
        [Component] [nvarchar](100) NOT NULL,
        [FatherId] [int] NOT NULL,
        [LevelType] [int] NOT NULL,
        [StatusType] [int] NOT NULL,
     CONSTRAINT [PK_Sys_Menu] PRIMARY KEY CLUSTERED 
    (
        [Id] ASC
    )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
    ) ON [PRIMARY]
    
    GO
    SET IDENTITY_INSERT [dbo].[Sys_Menu] ON 
    
    GO
    INSERT [dbo].[Sys_Menu] ([Id], [Path], [Name], [Permission], [Meta], [Title], [Icon], [Component], [FatherId], [LevelType], [StatusType]) VALUES (1, N'/setting', N'setting', N'', N'', N'ManageMenu', N'', N'main', 0, 1, 1)
    GO
    INSERT [dbo].[Sys_Menu] ([Id], [Path], [Name], [Permission], [Meta], [Title], [Icon], [Component], [FatherId], [LevelType], [StatusType]) VALUES (2, N'user', N'user', N'Pages.Users', N'', N'Users', N'', N'../views/setting/user/user.vue', 1, 2, 1)
    GO
    INSERT [dbo].[Sys_Menu] ([Id], [Path], [Name], [Permission], [Meta], [Title], [Icon], [Component], [FatherId], [LevelType], [StatusType]) VALUES (3, N'role', N'role', N'Pages.Roles', N'', N'Roles', N'', N'../views/setting/role/role.vue', 1, 2, 1)
    GO
    INSERT [dbo].[Sys_Menu] ([Id], [Path], [Name], [Permission], [Meta], [Title], [Icon], [Component], [FatherId], [LevelType], [StatusType]) VALUES (4, N'tenant', N'tenant', N'Pages.Tenants', N'', N'Tenants', N'', N'../views/setting/tenant/tenant.vue', 1, 2, 1)
    GO
    SET IDENTITY_INSERT [dbo].[Sys_Menu] OFF
    GO

###    二、创建实体 ###

说明：实体文件应放置在领域层（Core中）

如图：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzE2OTk4OTQ1_size_16_color_FFFFFF_t_70 1][]

代码如下：

using Abp.Domain.Entities;
    
    namespace PD.Menu
    {
        public class Sys_Menu : Entity  
        {
            public virtual string Path { get; set; }
            public virtual string Name { get; set; }
            public virtual string Permission { get; set; }
            public virtual string Meta { get; set; }
            public virtual string Title { get; set; }
            public virtual string Icon { get; set; }
            public virtual string Component { get; set; }
            public virtual int FatherId { get; set; }
            public virtual int LevelType { get; set; }
            public virtual int StatusType { get; set; }
        }
    }

说明：virtual 表示在继承这个类的子类里面可以使用override将此方法重载,也可以不进行override重载，直接进行使用父类，  
此处用不用virtual修饰都可以

###    三、DbContext添加DbSet ###

说明：基础设施层的DbContext定义DbContext

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzE2OTk4OTQ1_size_16_color_FFFFFF_t_70 2][]

代码如下:

using Microsoft.EntityFrameworkCore;
    using Abp.Zero.EntityFrameworkCore;
    using PD.Authorization.Roles;
    using PD.Authorization.Users;
    using PD.MultiTenancy;
    using System.Collections.Generic;
    
    namespace PD.EntityFrameworkCore
    {
        public class PDDbContext : AbpZeroDbContext<Tenant, Role, User, PDDbContext>
        {
            /* Define a DbSet for each entity of the application */
            //public ISet<Menu.Sys_Menu> Tasks { get; set; }
            public virtual DbSet<Menu.Sys_Menu> Sys_Menu { set; get; }
            public PDDbContext(DbContextOptions<PDDbContext> options)
                : base(options)
            {
            }
        }
    }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzE2OTk4OTQ1_size_16_color_FFFFFF_t_70 3][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzE2OTk4OTQ1_size_16_color_FFFFFF_t_70]: /images/20211122/6321630da8654557bf8b0a0590c6f694.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzE2OTk4OTQ1_size_16_color_FFFFFF_t_70 1]: /images/20211122/0235161f12fa4573a1e991de6fd40d70.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzE2OTk4OTQ1_size_16_color_FFFFFF_t_70 2]: /images/20211122/b3c59b97ae6b4b44a0dbb7e790a56002.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzE2OTk4OTQ1_size_16_color_FFFFFF_t_70 3]: /images/20211122/8ca96a97d6a449d999446a569fe443e5.png