c# – 创建在ASP.NET Core Web API中返回OData的enbdpoints

我试图在ASP.NET Core Web API中创建OData端点.

我使用该模板创建了一个新的ASP.NET Core Web API,并假设它是必需的,将Microsoft.AspNetCore.OData包(v7.0.0-beta1)添加到它.

我找不到任何关于如何开始这个的文档.如果有人能告诉我如何将默认的ValuesController转换为返回OData而不是Json那将是很好的.

解决方法:

I created a new ASP.NET Core Web API using the template and added the Microsoft.AspNetCore.OData package (v7.0.0-beta1) to it assuming it is required.

I can’t find any documentation on how to get started with this. If anyone can tell me how I would simply turn the default ValuesController to return OData instead of Json that would be great.

根据您的描述,我建议您可以尝试按照以下步骤创建net core odata web api.

1.安装Microsoft.AspNetCore.OData 7.0.0-beta1

2.安装Microsoft.EntityFrameworkCore

3.创建一个模型类和DBContext类.

public class Person
{
    [Key]
    public int Id { get; set; }
    [Required]
    public string Name { get; set; }
    [Required]
    public int Age { get; set; }
}

public class ApplicationDbContext : DbContext
{
    public ApplicationDbContext(DbContextOptions options)
        : base(options)
    {
    }


    public DbSet<Person> Persons { get; set; }

}

4.创建一个Controller,在早期版本的OData中,你可以从ODataController继承.但在ASP.NET Core中,没有可用的OData控制器.因此,您需要使用OData属性创建普通控制器.

public class PersonController : Controller
{
    private readonly ApplicationDbContext _appDbContext;
    public PersonController(ApplicationDbContext sampleODataDbContext)
    {
        _appDbContext = sampleODataDbContext;
    }

    [EnableQuery]
    public IActionResult Get()
    {
        return Ok(_appDbContext.Persons.AsQueryable());
    }
}

5.修改启动类代码以添加OData中间件和OData路由.

public class Startup
{
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddDbContext<ApplicationDbContext>(options =>
options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
        services.AddOData();
        services.AddMvc();

    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
        //Adding Model class to OData
        var builder = GetEdmModel(app.ApplicationServices);
        builder.EntitySet<Person>(nameof(Person));

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

        app.UseMvc((routebuilder =>
        {
            routebuilder.MapODataServiceRoute("odata","odata", builder.GetEdmModel());
        }));
    }

    private static ODataConventionModelBuilder GetEdmModel(IServiceProvider serviceProvider)
    {
        var builder = new ODataConventionModelBuilder(serviceProvider);

      return builder;
    }
}

6.打开包管理器控制台以创建表：Add-Migration InitialCreate update-database

7.运行申请

结果：

标签：c,asp-net,odata,asp-net-core,asp-net-core-webapi
来源： https://codeday.me/bug/20190622/1263121.html