80 lines
2.5 KiB
C#
80 lines
2.5 KiB
C#
using Microsoft.AspNetCore.Http;
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using System;
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using System.Collections.Generic;
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using System.Dynamic;
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using System.Text;
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using System.Text.Json;
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using System.Threading.Tasks;
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namespace YD_WeChatApplet.Commons.Middlewares
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{
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/// <summary>
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/// 自定义异常中间件，对于系统异常的处理， 超时异常，异常。
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/// 拦截Response输出流，进行统一异常处理
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/// </summary>
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public class SystemExceptionHandlerderMiddleware
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{
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private readonly RequestDelegate _next;
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public SystemExceptionHandlerderMiddleware(RequestDelegate next)
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{
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this._next = next;
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}
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/// <summary>
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/// 执行异常处理(执行action无法拦截的异常)
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/// </summary>
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/// <param name="httpContext"></param>
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/// <returns></returns>
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public async Task Invoke(HttpContext httpContext)
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{
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try
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{
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// 1、执行下一个中间件
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await _next(httpContext);
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/* var statusCode = httpContext.Response.StatusCode;
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var msg = "";
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if (statusCode == 401)
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{
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msg = "未授权";
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}
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else if (statusCode == 404)
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{
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msg = "未找到服务";
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}
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else if (statusCode == 502)
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{
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msg = "请求错误";
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}
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else if (statusCode != 200)
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{
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msg = httpContext.Response.Body.ToString();
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}
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if (!string.IsNullOrWhiteSpace(msg))
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{
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await HandleExceptionAsync(httpContext, statusCode, msg);
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}*/
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}
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catch (System.Exception ex)
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{
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await HandleExceptionAsync(httpContext, httpContext.Response.StatusCode, ex.Message);
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}
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}
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private async static Task HandleExceptionAsync(HttpContext context, int statusCode, string msg)
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{
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context.Response.ContentType = "application/json;charset=utf-8";
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// 1、异常结果转换成json格式输出
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dynamic warpResult = new ExpandoObject();
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warpResult.ErrorNo = "-1";
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warpResult.ErrorInfo = msg;
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// 2、异常json格式输出
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var stream = context.Response.Body;
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await JsonSerializer.SerializeAsync(stream, warpResult);
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}
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}
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}
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