发送一个表单POST HTTP请求(Content-Type: application/x-www-form-urlencoded)到下面的控制器，结果是一个HTTP 415不支持的媒体类型响应。
public class MyController : Controller
{
[HttpPost]
public async Task<IActionResult> Submit([FromBody] MyModel model)
{
//...
}
}
表单post HTTP报头:
POST /submit HTTP/1.1
Host: example.com:1337
Connection: keep-alive
Content-Length: 219
Pragma: no-cache
Cache-Control: no-cache
Origin: https://example.com:1337
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Referer: https://example.com:1337/submit
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.8,nl;q=0.6
这在过去是与ASP一起工作的。NET MVC 5在。NET 4.6。
在。net 5中，我有一个。net API Controller方法，看起来像这样:
[HttpPost("{rootEntity}/{id}")]
public ActionResult Post(RootEntity rootEntity, int id, [FromBody] string message)
{
...
}
我有这样的要求:
POST /api/Comment/1/1 HTTP/1.1
Host: localhost:12345
Content-Type: text/plain
Content-Length: 4
test
它导致以下状态码响应:415不支持的媒体类型
{
"type": "https://tools.ietf.org/html/rfc7231#section-6.5.13",
"title": "Unsupported Media Type",
"status": 415,
"traceId": "00-e7ca54e9f313c24699c3ca4697b9363d-be4719bd10735245-00"
}
然后我切换到Content-Type: application/json，就像@BjornBailleul说的那样，但却得到了这个错误:
{
"type": "https://tools.ietf.org/html/rfc7231#section-6.5.1",
"title": "One or more validation errors occurred.",
"status": 400,
"traceId": "00-0549e2c73842c249a93c8dc2f817e250-796e99fc0000224d-00",
"errors": {
"$": [
"'test' is an invalid JSON literal. Expected the literal 'true'. Path: $ | LineNumber: 0 | BytePositionInLine: 1."
]
}
}
通过将字符串封装在引号中，就像这样:"test"。
完整的工作要求:
POST /api/Comment/1/1 HTTP/1.1
Host: localhost:12345
Content-Type: application/json
Content-Length: 6
"test"
