ASP.NET core webapi return data type _ platform: Windows (4)
It is common to find that most of the time the front-end requests the interface and returns JSON. So let’s see how the API is written later.
First we use the default created controller (ValuesController) as our reference:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
namespace mynetcorewebapi.Controllers
{
[RouteAttribute("api/[controller]")]
[ApiController]
public class ValuesController : ControllerBase
{
// GET api/values
[HttpGet]
public ActionResult<IEnumerable<string>> Get()
{
return new string[] { "value1", "value2" };
}
// GET api/values/5
[HttpGet("{id}")]
public ActionResult<string> Get(int id)
{
return "value";
}
// POST api/values
[HttpPost]
public void Post([FromBody] string value)
{
}
// PUT api/values/5
[HttpPut("{id}")]
public void Put(int id, [FromBody] string value)
{
}
// DELETE api/values/5
[HttpDelete("{id}")]
public void Delete(int id)
{
}
}
}
Copy the code
We noticed that the ActionResult<IEnumerable> return value in the code above is a collection of string generics
So if we don’t want to restrict the type every time we write ActionResult
If you want to keep writing a little bit less code, you can write object directly, so this is what the simplification looks like
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
namespace mynetcorewebapi.Controllers{[ApiController]
public class ValuesController : ControllerBase{[RouteAttribute("api/values/get")]
[HttpGet]
public ActionResult<object> Get()
{
return new string[] { "value1"."value2"}; }}}Copy the code
And this:
using System; using System.Collections.Generic; using System.Linq; using System.Threading.Tasks; using Microsoft.AspNetCore.Mvc; namespace mynetcorewebapi.Controllers { [ApiController] public class ValuesController : ControllerBase { [RouteAttribute("api/values/get")] [HttpGet] public object Get() { return new string[] { "value1", "value2" }; }}}Copy the code
Results after the interview (both) :
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