ASP.NET Core 使用 Hangfire 很简单,首先,Nuget 安装程序包:
> install-package Hangfire -pre
然后ConfigureServices
添加配置代码:
public void ConfigureServices(IServiceCollection services) { services.AddHangfire(x => x.UseSqlServerStorage("<name or connection string>")); }
上面配置的是 Hangfire 任务配置数据库信息,默认只支持 SQLServer,如果不想使用数据库的话,可以 Nuget 安装程序包:
> install-package Hangfire.MemoryStorage -pre
修改ConfigureServices
配置代码:
public void ConfigureServices(IServiceCollection services) { services.AddHangfire(x => x..UseStorage(new MemoryStorage())); }
Hangfire 扩展(比如 MySql):https://www.hangfire.io/extensions.html
然后Configure
添加配置代码:
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) { app.UseHangfireServer(); app.UseHangfireDashboard(); RecurringJob.AddOrUpdate(() => Console.WriteLine("Recurring!"), Cron.Minutely()); }
上面配置代码一分钟执行一次,Hangfire 支持 UI 界面展示,地址:http://localhost:8089/hangfire
Hangfire 默认也支持执行异步方法,RecurringJob
方法签名:
public static void AddOrUpdate<T>(Expression<Func<T, Task>> methodCall, string cronExpression, TimeZoneInfo timeZone = null, string queue = "default"); public static void AddOrUpdate(Expression<Func<Task>> methodCall, string cronExpression, TimeZoneInfo timeZone = null, string queue = "default"); public static void AddOrUpdate<T>(Expression<Func<T, Task>> methodCall, Func<string> cronExpression, TimeZoneInfo timeZone = null, string queue = "default"); public static void AddOrUpdate(Expression<Func<Task>> methodCall, Func<string> cronExpression, TimeZoneInfo timeZone = null, string queue = "default");
异步和同步使用没有任何区别,示例代码:
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) { app.UseHangfireServer(); app.UseHangfireDashboard(); RecurringJob.AddOrUpdate(() => TestAsync(), Cron.Minutely()); } public static async Task TestAsync() { // to do... }