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  • ASP.NET Core 使用 Hangfire 定时任务

    定时任务组件,除了 Hangfire 外,还有一个 Quarz.NET,不过 Hangfire .NET Core 支持的会更好些。

    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...
    }
    

    参考资料:

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  • 原文地址:https://www.cnblogs.com/xishuai/p/asp-net-core-hangfire.html
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