如何组织 .NET 6 Minimal Web Api 路由？

Question

如何将“/api/employees”路由移出program.cs？

程序.cs：

var builder = WebApplication.CreateBuilder(args);

var connectionString = builder.Configuration.GetConnectionString("AppDb");

// Add services to the container.

builder.Services.AddControllers();

builder.Services.AddDbContext<AppDbContext>(o => o.UseSqlServer(connectionString));

builder.Services.AddAuthorization();
builder.Services.AddAuthentication();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (builder.Environment.IsDevelopment())
{
    app.UseDeveloperExceptionPage();
}

app.UseHttpsRedirection();

app.UseAuthorization();

app.UseAuthentication();

app.MapControllers();

app.MapGet("/", () => "Hello World!");

app.Run();

我见过微软的人做了这样的事情：

public class EmployeeApi
{
    public static void MapRoutes(IEndpointRouteBuilder routes)
    {
        routes.MapGet("/api/employees", async  ([FromServices] AppDbContext db) =>
        {
            return await db.Employees.ToListAsync();
        });

        routes.MapGet("api/employees/{id}", async (int id, [FromServices] AppDbContext db) =>
        {
            return await db.Employees.FindAsync(id);
        });
    }
}

他们创建了一个新班级。但我不知道如何实现这一点，以便程序知道这些路由的存在。

Answer 1

您可以创建一个扩展方法并在文件中调用它program.cs：

public static class EmployeeApi
{
    public static void MapEmployeesRoutes(this IEndpointRouteBuilder app)
    {
        app.MapGet("/api/employees", async  ([FromServices] AppDbContext db) =>
        {
            return await db.Employees.ToListAsync();
        });

        app.MapGet("api/employees/{id}", async (int id, [FromServices] AppDbContext db) =>
        {
            return await db.Employees.FindAsync(id);
        });
    }
}

并在您的program.cs文件中调用您的方法：

app.MapGet("/", () => "Hello World!");
app.MapEmployeesRoutes();

你的program.cs文件应该是这样的：

app.MapGet("/", () => "Hello World!");
app.MapEmployeesRoutes();