我知道你错过了什么，你使用了错误的控制器属性，这里你可以做什么：

• 在控制器中，您必须使用[ApiVersion]而不是[ApiExplorerSettings(GroupName = ...)]属性。组是不同的，我猜它们是关于分组端点在Swagger页面的同一部分下。
• 当一个方法参数需要一个版本时，请保持一致。OpenApiInfo、SwaggerEndpoint、ApiVersion需要相同的字符串，例如schooljob而不是School Job。

我想如果你像下面这样更新你的代码，它应该可以工作：

// Startup.cs

app.UseSwaggerUI(c =>
    {
        c.SwaggerEndpoint("/mainproject/swagger/schooljob/swagger.json", "schooljob");
        c.SwaggerEndpoint("/mainproject/swagger/hospitaljob/swagger.json", "hospitaljob");
        c.RoutePrefix = "mainproject/swagger";
        // No need for 2nd route prefix as there is only one Swagger page,
        // the content of the page gets updated when selecting a different version in the combobox.
    });

/* This line may be required in ConfigureServices method, give it a try */
/* services.AddApiVersioning(); */

// SchoolController.cs

[HttpPost("schooljob/getstudents")]
[ApiVersion("schooljob")]
public JsonResult GetStudents([FromBody]OnaySayfasiId onaySayfasi)
{ ... }

希望它能解决你的问题！

在程序中使用下面的代码。cs（.net 6），如果您正在使用。net 5（或更低版本）在strartup中使用此代码。CS

services.AddVersionedApiExplorer(options =>
    {
        options.GroupNameFormat = "'v'VV";
        options.SubstituteApiVersionInUrl = true;
    });

services.AddSwaggerGen(options =>
        {

            options.DocInclusionPredicate((documentName, apiDescription) =>
            {
                var actionApiVersionModel = apiDescription.ActionDescriptor.GetApiVersionModel();
                var apiExplorerSettingsAttribute = (ApiExplorerSettingsAttribute)apiDescription.ActionDescriptor.EndpointMetadata.First(x => x.GetType().Equals(typeof(ApiExplorerSettingsAttribute)));
                if (actionApiVersionModel == null)
                {
                    return true;
                }
                if (actionApiVersionModel.DeclaredApiVersions.Any())
                {
                    return actionApiVersionModel.DeclaredApiVersions.Any(v =>
                    $"{apiExplorerSettingsAttribute.GroupName}v{v}" == documentName);
                }
                return actionApiVersionModel.ImplementedApiVersions.Any(v =>
                       $"{apiExplorerSettingsAttribute.GroupName}v{v}" == documentName);
            });

            var apiVersionDescriptionProvider = services.BuildServiceProvider().GetService<IApiVersionDescriptionProvider>();
            foreach (var description in apiVersionDescriptionProvider.ApiVersionDescriptions)
            {
                options.SwaggerDoc($"Orders{description.GroupName}", new OpenApiInfo
                {
                    Title = "Example Service",
                    Description = "Example Service -- Backend Service Project",
                    Version = description.ApiVersion.ToString(),
                    
                });
                options.SwaggerDoc($"Payments{description.GroupName}", new OpenApiInfo
                {
                    Title = "Example Service",
                    Description = "Example Service -- Backend Service Project",
                    Version = description.ApiVersion.ToString(),
                });
                // Orders & Payments are the groupName above ex: out put will be : swagger/OrdersV1.0/swagger.json ( if you select Orders from the swagger definition dropdown) 
                // If you select Payments => output : swagger/PaymentsV1.0/swagger.json
            }
            
            
var app = builder.Build();
                
            app.UseSwagger();

            app.UseSwaggerUI(
            swaggerOptions =>
            {                   
                foreach (var description in provider.ApiVersionDescriptions)
                {
                    swaggerOptions.SwaggerEndpoint($"{swagger/Orders{description.GroupName}/swagger.json",$"Orders  {description.GroupName.ToUpperInvariant()}" );
                    swaggerOptions.SwaggerEndpoint($"{swagger/Payments{description.GroupName}/swagger.json", $"Payments  {description.GroupName.ToUpperInvariant()}");
                }
            });

控制器//V1 //示例控制器1：

[ApiVersion("1.0")]
[ApiController]
[ApiExplorerSettings(GroupName = "Orders")]
[Route("api/v{version:apiVersion}/[controller]")]
public class OrdersController : ControllerBase

//示例控制器2：

[ApiVersion("1.0")]
[ApiController]
[ApiExplorerSettings(GroupName = "Payments")]
[Route("api/v{version:apiVersion}/[controller]")]
public class PaymentsController : ControllerBase