ASP.NET Core WebApi HttpResponseMessage创建自定义消息？

Question

如何在ASP.NET Core WebApi中创建自定义消息？例如,我想回来

new HttpResponseMessage()
{
    StatusCode=HttpStatusCode.OK,
    Message="Congratulations !!"
};

new HttpResponseMessage()
{ 
    StatusCode=HttpStatusCode.NotFound,
    Message="Sorry !!"
};

Answer 1

这个最简单的方法是使用基类Controller类的助手.

public ActionResult ExampleNotFound()
{
    return NotFound("Sorry !!");            
}

public ActionResult ExampleOk()
{
    return Ok("Congratulations !!");
}

或者,您可以返回一个新的ContentResult并设置它的状态代码.

return new ContentResult
     {
         Content = "Congratulations !!",
         ContentType = "text/plain",
         StatusCode = 200
     };

这两种方法都略有不同,ContentResult总会有一个ContentType中text/plain

该Ok()和NotFound()方法返回一个ObjectResult,它使用格式化根据来自请求的Accept头的内容类型序列化的字符串.

Answer 2

为了返回legacy HttpResponseMessage，您需要将其转换为ResponseMessageResult.net core。下面是一个例子。

    public async Task<IActionResult> Get(Guid id)
    {
        var responseMessage = HttpContext.GetHttpRequestMessage().CreateResponse(HttpStatusCode.OK,
            new YourObject()
            {
                Id = Id,
                Name = Name
            });

        return new ResponseMessageResult(responseMessage);
    }