DotNETCore 学习笔记异常处理

Error Handling

public void Configure(IApplicationBuilder app, 
    IHostingEnvironment env)
{
    app.UseIISPlatformHandler();

    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }


public static void HomePage(IApplicationBuilder app)
{
    app.Run(async (context) =>
    {
        if (context.Request.Query.ContainsKey("throw"))
        {
            throw new Exception("Exception triggered!");
        }
        var builder = new StringBuilder();
        builder.AppendLine("<html><body>Hello World!");
        builder.AppendLine("<ul>");
        builder.AppendLine("<li><a href="/?throw=true">Throw Exception</a></li>");
        builder.AppendLine("<li><a href="/missingpage">Missing Page</a></li>");
        builder.AppendLine("</ul>");
        builder.AppendLine("</body></html>");

        context.Response.ContentType = "text/html";
        await context.Response.WriteAsync(builder.ToString());
    });
}


app.UseExceptionHandler("/Error");
[Route("/Error")]
public IActionResult Index()
{
    // Handle error here
}

Configuring Status Code Pages
app.UseStatusCodePages();
app.UseStatusCodePages(context =>
  context.HttpContext.Response.SendAsync("Handler, status code: " +
  context.HttpContext.Response.StatusCode, "text/plain"));

app.UseStatusCodePages("text/plain", "Response, status code: {0}");

app.UseStatusCodePagesWithRedirects("~/errors/{0}");
app.UseStatusCodePagesWithReExecute("/errors/{0}");

If you need to disable status code pages for certain requests, you can do so using the following code:
var statusCodePagesFeature = context.Features.Get<IStatusCodePagesFeature>();
if (statusCodePagesFeature != null)
{
  statusCodePagesFeature.Enabled = false;
}
DotNETCore 学习笔记 异常处理

DotNETCore 学习笔记异常处理
