如何将 Web Api 服务与 OdataController 一起使用？

Question

我正在使用此 URL 调用服务：http://localhost:7951/odata/Student 但我得到了错误

404 未找到

我哪里做错了？

我的 DbContext 类如下：

public class DataContext : DbContext
{ 
    public DataContext()
        : base("name=FrameworkConnStr")
    {
    }

    public DbSet<Student> Students { get; set; }
    public DbSet<StudentAddress> StudentAddresses { get; set; }
}

[Table("M_DEMIR.STUDENT")]
public partial class Student
{
    public Student()
    {
        StudentAddress = new HashSet<StudentAddress>();
    }

    [Column("ID"), Key]
    public int Id { get; set; }

    [Column("NAME", TypeName = "varchar2"), MaxLength(25)]
    public string Name { get; set; }

    [Column("SURNAME", TypeName = "varchar2"), MaxLength(50)]
    public string Surname { get; set; }

    public virtual ICollection<StudentAddress> StudentAddress { get; set; }
}

[Table("M_DEMIR.STUDENTADDRESS")]
public partial class StudentAddress
{
    [Column("ID"), Key]
    public int Id { get; set; }

    [Column("STUDENT_ID")]
    public int StudentId { get; set; }

    [Column("CITY", TypeName = "varchar2"), MaxLength(25)]
    public string City { get; set; }

    [ForeignKey("StudentId")]
    public virtual Student Student { get; set; }
}

控制器代码如下：

[EnableQuery]
public class StudentController : ODataController
{
    DataContext db = new DataContext();


    public IHttpActionResult Get()
    {
        return Ok();
    }


}

WebApiConfig 代码如下：

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        var builder = new ODataConventionModelBuilder();
        builder.EntitySet<Student>("Students");
        builder.EntitySet<StudentAddress>("StudentAddresses");
        config.Routes.MapODataServiceRoute("odata", "odata", builder.GetEdmModel());
    }

我哪里做错了？

Answer 1

[ODataRoutePrefix("Students")]
public class StudentController : ODataController
{
    DataContext db = new DataContext();

    [EnableQuery(MaxTop = 100)] // MaxTop so you can use the $top in the query string
    [ODataRoute]
    public IHttpActionResult Get()
    {
        return Ok(db.Students); // you do want to return something that can be queried
    }
}

• EnableQuery 应该在 Get 方法上。
• 将ODataRoute 添加到Get 方法中。
• 将ODataRoutePrefix("Students") 添加到您现在拥有EnableQuery 的类定义中

将您的网址更改为http://localhost:7951/odata/Students（添加一个s）。

另外，不要忘记通过覆盖控制器的 Dispose 方法来处理您的 DbContext 实例。