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不做码农
2023-06-20 07:26:25 +08:00
parent 948b1bcf4e
commit 06f664910b
12 changed files with 66 additions and 95 deletions
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37
Infrastructure/App/App.cs
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@@ -1,4 +1,6 @@
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Security.Claims;
@@ -10,16 +12,23 @@ namespace Infrastructure
/// <summary>
/// 服务提供器
/// </summary>
public static IServiceProvider ServiceProvider => HttpContext?.RequestServices ?? InternalApp.ServiceProvider;
public static IServiceProvider ServiceProvider => InternalApp.ServiceProvider;
/// <summary>
/// 获取请求上下文
/// </summary>
public static HttpContext HttpContext => HttpContextLocal.Current();
public static HttpContext HttpContext => CatchOrDefault(() => ServiceProvider?.GetService<IHttpContextAccessor>()?.HttpContext);
/// <summary>
/// 获取请求上下文用户
/// </summary>
public static ClaimsPrincipal User => HttpContext?.User;
/// <summary>
/// 获取Web主机环境
/// </summary>
public static IWebHostEnvironment WebHostEnvironment => InternalApp.WebHostEnvironment;
/// <summary>
/// 获取全局配置
/// </summary>
public static IConfiguration Configuration => CatchOrDefault(() => InternalApp.Configuration, new ConfigurationBuilder().Build());
/// <summary>
/// 获取请求生命周期的服务
/// </summary>
@@ -61,5 +70,25 @@ namespace Infrastructure
{
return ServiceProvider.GetRequiredService(type);
}
/// <summary>
/// 处理获取对象异常问题
/// </summary>
/// <typeparam name="T">类型</typeparam>
/// <param name="action">获取对象委托</param>
/// <param name="defaultValue">默认值</param>
/// <returns>T</returns>
private static T CatchOrDefault<T>(Func<T> action, T defaultValue = null)
where T : class
{
try
{
return action();
}
catch
{
return defaultValue ?? null;
}
}
}
}

59
Infrastructure/App/Web/HttpContextLocal.cs
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@@ -1,59 +0,0 @@
using Microsoft.AspNetCore.Http;
using System;
using System.Linq.Expressions;
using System.Reflection;
using System.Threading;
namespace Microsoft.AspNetCore.Http
{
public static class HttpContextLocal
{
private static Func<object> _asyncLocalAccessor;
private static Func<object, object> _holderAccessor;
private static Func<object, HttpContext> _httpContextAccessor;
/// <summary>
/// 获取当前 HttpContext 对象
/// </summary>
/// <returns></returns>
public static HttpContext Current()
{
var asyncLocal = (_asyncLocalAccessor ??= CreateAsyncLocalAccessor())();
if (asyncLocal == null) return null;
var holder = (_holderAccessor ??= CreateHolderAccessor(asyncLocal))(asyncLocal);
if (holder == null) return null;
return (_httpContextAccessor ??= CreateHttpContextAccessor(holder))(holder);
// 创建异步本地访问器
static Func<object> CreateAsyncLocalAccessor()
{
var fieldInfo = typeof(HttpContextAccessor).GetField("_httpContextCurrent", BindingFlags.Static | BindingFlags.NonPublic);
var field = Expression.Field(null, fieldInfo);
return Expression.Lambda<Func<object>>(field).Compile();
}
// 创建常驻 HttpContext 访问器
static Func<object, object> CreateHolderAccessor(object asyncLocal)
{
var holderType = asyncLocal.GetType().GetGenericArguments()[0];
var method = typeof(AsyncLocal<>).MakeGenericType(holderType).GetProperty("Value").GetGetMethod();
var target = Expression.Parameter(typeof(object));
var convert = Expression.Convert(target, asyncLocal.GetType());
var getValue = Expression.Call(convert, method);
return Expression.Lambda<Func<object, object>>(getValue, target).Compile();
}
// 获取 HttpContext 访问器
static Func<object, HttpContext> CreateHttpContextAccessor(object holder)
{
var target = Expression.Parameter(typeof(object));
var convert = Expression.Convert(target, holder.GetType());
var field = Expression.Field(convert, "Context");
var convertAsResult = Expression.Convert(field, typeof(HttpContext));
return Expression.Lambda<Func<object, HttpContext>>(convertAsResult, target).Compile();
}
}
}
}

30
Infrastructure/Infrastructure.csproj
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@@ -1,19 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net7.0</TargetFramework>
</PropertyGroup>
<PropertyGroup>
<TargetFramework>net7.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<FrameworkReference Include="Microsoft.AspNetCore.App" />
<Compile Remove="Model\PagedInfo.cs" />
</ItemGroup>
<ItemGroup>
<Compile Remove="Model\PagedInfo.cs" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="AspectCore.Abstractions" Version="2.3.0" />
<PackageReference Include="Microsoft.AspNetCore.Hosting" Version="2.2.7" />
<PackageReference Include="Microsoft.Extensions.DependencyModel" Version="7.0.0" />
<PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="7.0.0" />
<PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="AspectCore.Abstractions" Version="2.4.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="7.0.4" />
<PackageReference Include="Microsoft.Extensions.DependencyModel" Version="7.0.0" />
<PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="7.0.0" />
<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
</ItemGroup>
</Project>

9
Infrastructure/InternalApp.cs
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@@ -1,6 +1,5 @@
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using System;
namespace Infrastructure
@@ -15,12 +14,12 @@ namespace Infrastructure
/// <summary>
/// 全局配置构建器
/// </summary>
//public static IConfigurationBuilder ConfigurationBuilder;
public static IConfiguration Configuration;
/// <summary>
/// 获取Web主机环境
/// </summary>
//internal static IWebHostEnvironment WebHostEnvironment;
public static IWebHostEnvironment WebHostEnvironment;
/// <summary>
/// 获取泛型主机环境