Postman发送OData $batch请求报错，请求URI无匹配资源求排查

Hey there, let's break down your issue step by step. The error you're seeing—"No HTTP resource was found that matches the request URI..."—points to two main areas: missing backend configuration for OData batch support, and a few formatting issues in your request body.

First: The Core Issue - Missing Backend OData Batch Routing #

OData's $batch endpoint doesn't come enabled out of the box. You need to explicitly configure your backend to support batch requests, depending on which framework you're using:

For ASP.NET Web API OData (Legacy Framework) #

In your WebApiConfig.cs, you need to add a batch handler when mapping the OData route:

public static void Register(HttpConfiguration config)
{
    // Build your OData model first
    ODataModelBuilder builder = new ODataConventionModelBuilder();
    builder.EntitySet<School>("Schools");
    
    // Critical: Include the batch handler to register the $batch endpoint
    config.MapODataServiceRoute(
        routeName: "ODataRoute",
        routePrefix: null,
        model: builder.GetEdmModel(),
        batchHandler: new DefaultODataBatchHandler(GlobalConfiguration.DefaultServer)
    );
}

Without that batchHandler parameter, your service won't recognize the $batch route at all.

For ASP.NET Core OData #

In your Program.cs (or Startup.cs), enable batch support when configuring OData services:

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddControllers().AddOData(options =>
{
    options.AddRouteComponents("", GetEdmModel()) // Use "odata" as prefix if you have one
           .EnableQueryFeatures()
           .EnableBatch(); // This turns on batch request support
});

// Helper method to build your EDM model
private static IEdmModel GetEdmModel()
{
    ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
    builder.EntitySet<School>("Schools");
    return builder.GetEdmModel();
}

If you're using a route prefix like odata, your batch URL should be http://localhost:52484/odata/$batch instead of the root path.

Second: Fix Your Request Body Format #

Even if the backend is configured correctly, your current request body has formatting errors that will cause parsing failures:

• Add blank lines between sections: Each --batch_xxx boundary needs a blank line before the Content-Type header, and the sub-request needs a blank line after its headers.
• Use the correct Host header: Replace Host: host with Host: localhost:52484 to match your actual server address.
• End with a closed boundary: The final boundary line needs -- appended to it (i.e., --batch_36522ad7-fc75-4b56-8c71-56071383e77b--).

Here's the corrected request body:

--batch_36522ad7-fc75-4b56-8c71-56071383e77b
Content-Type: application/http
Content-Transfer-Encoding: binary

GET /Schools?$top=1 HTTP/1.1
Host: localhost:52484

--batch_36522ad7-fc75-4b56-8c71-56071383e77b--

Final Notes #

Start by fixing the backend configuration—this is the root cause of your "no route found" error. Once that's set up, adjust your request body to match the correct format, and your batch request should work as expected.

内容的提问来源于stack exchange，提问作者Nands