v1.0.1

CC.Yi.API/Controllers/StudentController.cs

@@ -1,4 +1,5 @@
 using CC.Yi.IBLL;
+using CC.Yi.Model;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Logging;
 using System;
@@ -20,11 +21,50 @@ namespace CC.Yi.API.Controllers
             _logger = logger;
         }
 
+
+        #region
+        //下面，经典的 增删改查 即为简易--Yi意框架
+        //注意：请确保你的数据库中存在合理的数据
+        #endregion
         [HttpGet]
-        public IActionResult Test()
+        public IActionResult GetTest()//查
         {
             var data = _studentBll.GetAllEntities().ToList();
             return Content(Common.JsonFactory.JsonToString(data));
         }
+        [HttpGet]
+        public IActionResult AddTest()//增
+        {
+           List<student> students = new List<student>() {new student { name = "学生a" } ,new student { name="学生d"} };
+            _studentBll.Add(students);
+           return Content("ok");
+
+        }
+        [HttpGet]
+        public IActionResult RemoveTest()//删
+        {
+    
+            if (_studentBll.Delete(u=>u.name=="学生a"))
+            {
+                return Content("ok");
+            }
+            else
+            {
+                return Content("no");
+            }     
+        }
+        [HttpGet]
+        public IActionResult UpdateTest()//改
+        {
+            if (_studentBll.Update(new student { id=2, name = "学生a" }, "name"))
+            {
+                return Content("ok");
+            }
+            else
+            {
+                return Content("no");
+            }
+
+        }
     }
 }

CC.Yi.API/Migrations/20210320082935_yi2.Designer.cs

@@ -0,0 +1,40 @@
+// <auto-generated />
+using CC.Yi.Model;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+namespace CC.Yi.API.Migrations
+{
+    [DbContext(typeof(DataContext))]
+    [Migration("20210320082935_yi2")]
+    partial class yi2
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("Relational:MaxIdentifierLength", 128)
+                .HasAnnotation("ProductVersion", "5.0.4")
+                .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
+
+            modelBuilder.Entity("CC.Yi.Model.student", b =>
+                {
+                    b.Property<int>("id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int")
+                        .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
+
+                    b.Property<string>("name")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("id");
+
+                    b.ToTable("student");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

CC.Yi.API/Migrations/20210320082935_yi2.cs

@@ -0,0 +1,31 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace CC.Yi.API.Migrations
+{
+    public partial class yi2 : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "name",
+                table: "student",
+                type: "nvarchar(max)",
+                nullable: true,
+                oldClrType: typeof(int),
+                oldType: "int");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<int>(
+                name: "name",
+                table: "student",
+                type: "int",
+                nullable: false,
+                defaultValue: 0,
+                oldClrType: typeof(string),
+                oldType: "nvarchar(max)",
+                oldNullable: true);
+        }
+    }
+}

CC.Yi.API/Migrations/DataContextModelSnapshot.cs

@@ -25,8 +25,8 @@ namespace CC.Yi.API.Migrations
                         .HasColumnType("int")
                         .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
 
-                    b.Property<int>("name")
+                    b.Property<string>("name")
-                        .HasColumnType("int");
+                        .HasColumnType("nvarchar(max)");
 
                     b.HasKey("id");
 

CC.Yi.API/Program.cs

@@ -1,5 +1,7 @@
+using CC.Yi.DAL;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using System;
@@ -13,7 +15,22 @@ namespace CC.Yi.API
     {
         public static void Main(string[] args)
         {
-            CreateHostBuilder(args).Build().Run();
+            var host = CreateHostBuilder(args).Build();
+            var scope = host.Services.CreateScope();
+            {
+                var services = scope.ServiceProvider;
+                try
+                {
+                    var context = services.GetRequiredService<Model.DataContext>();
+                    DbContentFactory.Initialize(context);
+                }
+                catch (Exception ex)
+                {
+                    var logger = services.GetRequiredService<ILogger<Program>>();
+                    logger.LogError(ex, "An error occurred while seeding the database.");
+                }
+            }
+            host.Run();
         }
 
         public static IHostBuilder CreateHostBuilder(string[] args) =>

CC.Yi.API/appsettings.json

@@ -8,5 +8,5 @@
   },
   "AllowedHosts": "*",
   "ConnectionStringBySQL": "server=.;Database=cctest;UId=sa;PWD=Qz52013142020.",
-  "ConnectionStringByMySQL": "Data Source=49.235.212.122;Database=GraduationProject;User ID=root;Password=Qz52013142020.;pooling=true;port=3306;sslmode=none;CharSet=utf8;"
+  "ConnectionStringByMySQL": "Data Source=.;Database=cctest;User ID=root;Password=Qz52013142020.;pooling=true;port=3306;sslmode=none;CharSet=utf8;"
 }

CC.Yi.BLL/BaseBll.cs

@@ -15,6 +15,7 @@ namespace CC.Yi.BLL
         {
             CurrentDal = cd;
         }
+   
         public IQueryable<T> GetAllEntities() 
         {
             return CurrentDal.GetAllEntities();
@@ -49,12 +50,24 @@ namespace CC.Yi.BLL
             return entity;
         }
 
+        public bool Add(IEnumerable<T> entities)
+        {
+            CurrentDal.AddRange(entities);
+            return DbSession.SaveChanges() > 0;
+        }
+
         public bool Update(T entity)
         {
             CurrentDal.Update(entity);
             return DbSession.SaveChanges() > 0;
         }
 
+        public bool Update(T entity, params string[] propertyNames)
+        {
+            CurrentDal.Update(entity,propertyNames);
+            return DbSession.SaveChanges() > 0;
+        }
+
         public bool Delete(T entity)
         {
             CurrentDal.Delete(entity);
@@ -73,14 +86,24 @@ namespace CC.Yi.BLL
             return DbSession.SaveChanges() > 0;
         }
 
-        public int DeleteList(List<int> ids)
+        public bool Delete(IEnumerable<int> ids)
         {
             foreach (var id in ids)
             {
                 CurrentDal.Detete(id);
             }
-            return DbSession.SaveChanges();//这里把SaveChanges方法提到了循环体外，自然就与数据库交互一次
+            return DbSession.SaveChanges()>0;
         }
+        public bool Delete(Expression<Func<T, bool>> where)
+        {
+            IQueryable<T> entities =  CurrentDal.GetEntities(where);
+            if (entities != null)
+            {
+                CurrentDal.DeteteRange(entities);
 
+                return DbSession.SaveChanges()>0;
+            }
+            return false;
+        }
     }
 }

CC.Yi.DAL/BaseDal.cs

@@ -1,7 +1,9 @@
 using CC.Yi.IDAL;
 using CC.Yi.Model;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.ChangeTracking;
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Linq.Expressions;
 
@@ -9,10 +11,9 @@ namespace CC.Yi.DAL
 {
     public class BaseDal<T> : IBaseDal<T> where T : class, new()
     {
-        public DataContext Db;
+        public DbContext Db
-        public BaseDal(DataContext _Db)
         {
-            Db = _Db;
+            get { return DbContentFactory.GetCurrentDbContent(); }
         }
         public IQueryable<T> GetEntities(Expression<Func<T, bool>> whereLambda)
         {
@@ -65,6 +66,11 @@ namespace CC.Yi.DAL
             //Db.SaveChanges();
             return entity;
         }
+        public bool AddRange(IEnumerable<T> entities)
+        {
+            Db.Set<T>().AddRange(entities);
+            return true;
+        }
 
         public bool Update(T entity)
         {
@@ -73,7 +79,16 @@ namespace CC.Yi.DAL
             //return Db.SaveChanges() > 0;
             return true;
         }
-
+        public bool Update(T entity, params string[] propertyNames)
+        {
+            EntityEntry entry = Db.Entry<T>(entity);
+            entry.State = EntityState.Unchanged;
+            foreach (var item in propertyNames)
+            {
+                entry.Property(item).IsModified = true;
+            }
+            return true;
+        }
 
         public bool Delete(T entity)
         {
@@ -87,6 +102,12 @@ namespace CC.Yi.DAL
             Db.Set<T>().Remove(entity);//由于这里先Find找到了实体，所以这里可以用Remove标记该实体要移除（删除）。如果不是先Find到实体就需要用System.Data.Entity.EntityState.Deleted
             return true;
         }
+        public bool DeteteRange(IEnumerable<T> entity)
+        {
+            Db.Set<T>().RemoveRange(entity);
+            return true;
+        }
+
 
     }
 }

CC.Yi.DAL/DbContentFactory.cs

@@ -8,43 +8,36 @@ namespace CC.Yi.DAL
 {
     public class DbContentFactory
     {
-        private static  DataContext Webcontext;
+        private static DataContext Webcontext;
-
+        public static void Initialize(DataContext webContext)
-        public  DbContentFactory(DataContext webContext)
         {
             Webcontext = webContext;
         }
-
-        //public static void Initialize(DataContext webContext)
-        //{
-        //    Webcontext = webContext;
-        //}
         public static DataContext GetCurrentDbContent()
         {
-            ////return new DataModelContainer();
+            //return new DataModelContainer();
-            ////一次请求共用一个上下文实例
+            //一次请求共用一个上下文实例
-            ////每一次http请求都会开启一个新的线程，保证在一个线程中,DbContext是唯一的
+            //每一次http请求都会开启一个新的线程，保证在一个线程中,DbContext是唯一的
-            ////CallContext：是线程内部唯一的数据槽（一块内存空间/容器）,相当于一个键值对数据容器，通过key获取value了,需要引入System.Runtime.Remoting.Messaging;命名空间
+            //CallContext：是线程内部唯一的数据槽（一块内存空间/容器）,相当于一个键值对数据容器，通过key获取value了,需要引入System.Runtime.Remoting.Messaging;命名空间
-            //DbContext db = CallContext.GetData("DbContext") as DbContext;
+            DataContext db = CallContext.GetData("DbContext") as DataContext;
-            ////从 CallContext 中检索具有指定key“DbContext”的对象，并强转为DbContext
+            //从 CallContext 中检索具有指定key“DbContext”的对象，并强转为DbContext
-            //if (db == null)//线程在数据槽里面没有此上下文
+            if (db == null)//线程在数据槽里面没有此上下文
-            //{
+            {
-            //    db = Webcontext;
+                db = Webcontext;
-            //    CallContext.SetData("DbContext", db);//放到数据槽中去,DbContext是key，db是value
+                CallContext.SetData("DbContext", db);//放到数据槽中去,DbContext是key，db是value
-            //}
+            }
-            //return db;
+            return db;
-            return Webcontext;
         }
 
-        //private static class CallContext
+        private static class CallContext
-        //{
+        {
-        //    static ConcurrentDictionary<string, AsyncLocal<object>> state = new ConcurrentDictionary<string, AsyncLocal<object>>();
+            static ConcurrentDictionary<string, AsyncLocal<object>> state = new ConcurrentDictionary<string, AsyncLocal<object>>();
 
-        //    public static void SetData(string name, object data) =>
+            public static void SetData(string name, object data) =>
-        //        state.GetOrAdd(name, _ => new AsyncLocal<object>()).Value = data;
+                state.GetOrAdd(name, _ => new AsyncLocal<object>()).Value = data;
 
-        //    public static object GetData(string name) =>
+            public static object GetData(string name) =>
-        //        state.TryGetValue(name, out AsyncLocal<object> data) ? data.Value : null;
+                state.TryGetValue(name, out AsyncLocal<object> data) ? data.Value : null;
-        //}
+        }
     }
 }

CC.Yi.DAL/T4DAL.cs

@@ -8,8 +8,5 @@ namespace CC.Yi.DAL
 {
     public partial class studentDal : BaseDal<student>, IstudentDal
     {
-        public studentDal(DataContext _Db) : base(_Db)
-        {
-        }
     }
 }

CC.Yi.DAL/T4DAL.tt

@@ -25,9 +25,6 @@ namespace CC.Yi.DAL
  #>
     public partial class <#=k #>Dal : BaseDal<<#=k #>>, I<#=k #>Dal
     {
-        public <#=k #>Dal(DataContext _Db) : base(_Db)
-        {
-        }
     }
 <#    } #>
 }

CC.Yi.DALFactory/T4StaticDalFactory.cs

@@ -15,7 +15,7 @@ namespace CC.Yi.DALFactory
             IstudentDal Data = CallContext.GetData("studentDal") as IstudentDal;
             if (Data == null)
             {
-                Data = new studentDal(DbSessionFactory.GetCurrentDbSession().GetDbContent());
+                Data = new studentDal();
                 CallContext.SetData("studentDal", Data);
             }
             return Data;

CC.Yi.DALFactory/T4StaticDalFactory.tt

@@ -32,7 +32,7 @@ namespace CC.Yi.DALFactory
             I<#=k #>Dal Data = CallContext.GetData("<#=k #>Dal") as I<#=k #>Dal;
             if (Data == null)
             {
-                Data = new <#=k #>Dal(DbSessionFactory.GetCurrentDbSession().GetDbContent());
+                Data = new <#=k #>Dal();
                 CallContext.SetData("<#=k #>Dal", Data);
             }
             return Data;

CC.Yi.IBLL/IBaseBll.cs

@@ -11,6 +11,7 @@ namespace CC.Yi.IBLL
         //得到全部实体
         #endregion
         IQueryable<T> GetAllEntities();
+
         #region
         //通过表达式得到实体
         #endregion
@@ -36,11 +37,21 @@ namespace CC.Yi.IBLL
         #endregion
         T Add(T entity);
 
+        #region
+        //添加多个实体
+        #endregion
+        bool Add(IEnumerable<T> entities);
+
         #region
         //更新实体
         #endregion
         bool Update(T entity);
 
+        #region
+        //更新实体部分属性
+        #endregion
+        bool Update(T entity, params string[] propertyNames);
+
         #region
         //删除实体
         #endregion
@@ -54,6 +65,11 @@ namespace CC.Yi.IBLL
         #region
         //通过id列表删除多个实体
         #endregion
-        int DeleteList(List<int> ids);
+        bool Delete(IEnumerable<int> ids);
+
+        #region
+        //通过表达式删除实体
+        #endregion
+        bool Delete(Expression<Func<T, bool>> where);
     }
 }

CC.Yi.IDAL/IBaseDal.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Linq.Expressions;
 
@@ -36,11 +37,20 @@ namespace CC.Yi.IDAL
         #endregion
         T Add(T entity);
 
+        #region
+        //添加多个实体
+        #endregion
+        bool AddRange(IEnumerable<T> entities);
         #region
         //更新单个实体
         #endregion
         bool Update(T entity);
 
+        #region
+        //更新单个实体部分属性
+        #endregion
+        bool Update(T entity, params string[] propertyNames);
+
         #region
         //删除单个实体
         #endregion
@@ -50,5 +60,10 @@ namespace CC.Yi.IDAL
         //通过id删除实体
         #endregion
         bool Detete(int id);
+
+        #region
+        //删除多个实体
+        #endregion
+        bool DeteteRange(IEnumerable<T> entity);
     }
 }

CC.Yi.Model/student.cs

@@ -11,6 +11,6 @@ namespace CC.Yi.Model
         [Key]
         [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
         public int id { get; set; }
-        public int name { get; set; }
+        public string name { get; set; }
     }
 }