.NET Core Hangfire任务计划
安装Hangfire
新建ASP.NET Core空 项目,.Net Core版本3.1
往*.csproj添加包引用,添加新的PackageReference标记。如下所示。请注意,下面代码段中的版本可能已经过时,如有需要,请使用nuget获取最新版本。
创建数据库
从上面的代码片段中可以看到,在本文中,我们将使用SQL Server作为作业存储。在配置Hangfire之前,您需要为它创建一个数据库,或者使用现有的数据库。下面的配置字符串指向本地计算机上SQLEXPRESS实例中的HangfireTest数据库。
您可以使用SQLServerManagementStudio或任何其他方式执行以下SQL命令。如果您使用的是其他数据库名称或实例,请确保在接下来的步骤中配置Hangfire时更改了连接字符串。
CREATE DATABASE [HangfireTest]
GO
配置Settings
下面将定义HangfireConnection连接来进行表迁移,同时AspNetCore与Hangfire进行了日志记录集成。Hangfire的日志信息有时非常重要,有助于诊断不同的问题。信息级别允许查看Hangfire的工作情况,警告和更高的日志级别有助于调查问题,建议调整日志级别
{
"ConnectionStrings": {
"HangfireConnection": "Server=.\\sqlexpress;Database=HangfireTest;Integrated Security=SSPI;"
},
"Logging": {
"LogLevel": {
"Default": "Warning",
"Hangfire": "Information"
}
}
}
更新应用程序设置后,打开Startup.cs文件。startup类是.NET CORE应用程序的配置。首先,我们需要导入Hangfire名称空间,由于建的是空项目,所以还需要导入Configuration.
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Configuration;
using Hangfire;
using Hangfire.SqlServer;
注册服务
使用asp.netcore内置DI注入Hangfire服务
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
public void ConfigureServices(IServiceCollection services)
{
// Add Hangfire services.
services.AddHangfire(configuration => configuration
.SetDataCompatibilityLevel(CompatibilityLevel.Version_170)
.UseSimpleAssemblyNameTypeSerializer()
.UseRecommendedSerializerSettings()
.UseSqlServerStorage(Configuration.GetConnectionString("HangfireConnection"), new SqlServerStorageOptions
{
CommandBatchMaxTimeout = TimeSpan.FromMinutes(5),
SlidingInvisibilityTimeout = TimeSpan.FromMinutes(5),
QueuePollInterval = TimeSpan.Zero,
UseRecommendedIsolationLevel = true,
DisableGlobalLocks = true
}));
// Add the processing server as IHostedService
services.AddHangfireServer();
}
添加Hangfire面板
如果只是作为后台作业,也可不使用面板功能,按需添加
public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { app.UseRouting(); app.UseEndpoints(endpoints => {
endpoints.MapGet("/", async context =>
{
await context.Response.WriteAsync("Hello World!");
});
endpoints.MapHangfireDashboard();
});
BackgroundJob.Enqueue(() => Console.WriteLine("测试"));
}
运行程序
生成数据表
访问http://localhost:5000/hangfire
添加Hangfire面板授权
新建MyAuthorizationFilter.cs
public class MyAuthorizationFilter : IDashboardAuthorizationFilter { public bool Authorize(DashboardContext context) { var httpContext = context.GetHttpContext(); string header = httpContext.Request.Headers["Authorization"];//获取授权 if(header == null) return AuthenicateLogin(); //解析授权 var authHeader = AuthenticationHeaderValue.Parse(header); var credentialBytes = Convert.FromBase64String(authHeader.Parameter); var credentials = Encoding.UTF8.GetString(credentialBytes).Split(new[] { ':' }, 2); var username = credentials[0]; var password = credentials[1]; //验证登录 if (username == "admin" && password =="123456") return true; else return AuthenicateLogin(); //跳转简单登录界面 bool AuthenicateLogin() { httpContext.Response.StatusCode = 401; httpContext.Response.Headers.Append("WWW-Authenticate", "Basic realm=\"Hangfire Dashboard\""); context.Response.WriteAsync("Authenticatoin is required."); return false; } } }
Hangfire面板修改
public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } app.UseRouting(); app.UseEndpoints(endpoints => {
endpoints.MapHangfireDashboard(new DashboardOptions
{
Authorization = new[] { new MyAuthorizationFilter() }
});
endpoints.MapGet("/", async context => { await context.Response.WriteAsync("Hello World!"); }); }); BackgroundJob.Enqueue(() => Console.WriteLine("测试")); }