The ASP. NET Core Web API handles the issue of httpresponsemessage type return values

After migrating our web API from the. NET Framework to. NET Core 1.1, you encounter a problem.

Previously, a Web API with a value type of Httpresponsemessage was returned, such as:

[HttpGet]  Public Async Task Get () {    returnawait _httpclient.getasync ($" ... " );}

(Note: The purpose of this Web API is to directly return the results of the HttpClient call back-end Web API to the calling client)

It would have returned the business data in JSON format, and now the JSON serialized data for Httpresponsemessage itself was returned:

{  "version": {}, "  content": {},  "StatusCode": $,  "reasonphrase": "OK",  "headers": [],  " Requestmessage ": {    " version ": {},    " content ": null,    " method ": {" method ":" GET "},    " RequestUri ":" ",    "Headers": [],    "Properties": {}  },  "Issuccessstatuscode": true}

A donkey's head is not a horse's mouth.

The solution was later found on StackOverflow--asp.net Core httprequestmessage returns strange JSON message, which was successfully resolved with the method in question.

Here's how to fix it:

1) Add the following configuration in. csproj in order to install the NuGet package in step 2nd (ASP. NET Core 2.0 does not need to add this configuration)

< Packagetargetfallback >$ (packagetargetfallback);p ortable-net45+win8</packagetargetfallback> 

2) Install NuGet package Microsoft.AspNetCore.Mvc.WebApiCompatShim

3) in Startup---Configureservices, add addwebapiconventions () after Addmvc () to:

 Public void configureservices (iservicecollection services) {    services. Addmvc (). Addwebapiconventions ();}

The ASP. NET Core Web API handles the issue of httpresponsemessage type return values