在asp.net core7 webapi中的使用方法
关于此项目：项目地址
最简单的代码如下（来源至DTCMS）
var builder = WebApplication.CreateBuilder(args);
builder.Host.UseServiceProviderFactory(new AutofacServiceProviderFactory()).ConfigureContainer<ContainerBuilder>(builder =>
{
//实现层
Assembly service = Assembly.Load("xxx.Service");
//接口层
Assembly iservice = Assembly.Load("xxx.IService");
builder.RegisterAssemblyTypes(service, iservice)
.Where(t => (t.FullName.EndsWith("Service")
|| t.FullName.EndsWith("Notify")
|| t.FullName.EndsWith("Execute")) && !t.IsAbstract) //类名以service结尾，且类型不能是抽象的
.AsImplementedInterfaces()
.InstancePerDependency();
// 从程序集中注册所有实现了IService接口的服务
});
以上便完成了对上述两个程序集的自动注入
请注意，如上只是一个简单的示例,在不同的项目需要注入的方式不同，如果是Transient/Scoped/Singleton 需要单独配置
2023/11/14日更新 🔗
正好有项目用到了按照不同的service来配置不同的生命周期,所以来更新一下
目前看到的其他项目用到的都是以文件名结尾的,总感觉不是很优雅,所以我采用的特性来完成
首先创建一个enum和Attribute
/// <summary>
/// 生命周期
/// </summary>
public enum LifeCycle
{
/// <summary>
/// 单例
/// </summary>
Singleton,
/// <summary>
/// 作用域
/// </summary>
Scoped,
/// <summary>
/// 瞬态
/// </summary>
Transient
}
public class LifeCycleAttribute : Attribute
{
public LifeCycleAttribute(LifeCycle lifeCycle)
{
LifeCycleVal = lifeCycle;
}
public LifeCycle LifeCycleVal { get; }
}
然后在Program.cs中编写如下代码
builder.Host.UseServiceProviderFactory(new AutofacServiceProviderFactory())
.ConfigureContainer<ContainerBuilder>(builder =>
{
//实现层
Assembly service = Assembly.Load("GaoXinInternal.Services");
//接口层
Assembly iservice = Assembly.Load("GaoXinInternal.IServices");
//单例
builder.RegisterAssemblyTypes(service, iservice)
.Where(t => t.GetCustomAttributes<LifeCycleAttribute>(true)
.Any(attr => attr.LifeCycleVal == LifeCycle.Singleton))
.AsImplementedInterfaces()
.SingleInstance();
//作用域
builder.RegisterAssemblyTypes(service, iservice)
.Where(t => t.GetCustomAttributes<LifeCycleAttribute>(inherit: true)
.Any(attr => attr.LifeCycleVal == LifeCycle.Scoped))
.InstancePerLifetimeScope()
.AsImplementedInterfaces();
//瞬态
builder.RegisterAssemblyTypes(service, iservice)
.Where(t => t.GetCustomAttributes<LifeCycleAttribute>(inherit: true)
.Any(attr => attr.LifeCycleVal == LifeCycle.Transient))
.InstancePerDependency()
.AsImplementedInterfaces();
});
这里的程序集名称请按照自己项目的名称进行修改
然后在service的class上面加上特性，用于指定该类以什么生命周期进行
namespace GaoXinInternal.Services
{
[LifeCycle(LifeCycle.Singleton)]
public class BaseService : IBaseService
{
private readonly IDbConnectionFactory _connectionFactory;
public BaseService(IDbConnectionFactory connectionFactory)
{
_connectionFactory = connectionFactory;
}
}
}
以上，即可完成对autofac的自动注入