“The request sent by the client was syntactically incorrect.” — bad Content-Type

问题

While sending some test requests to a JAX-RS REST server, I got back a

400 - Bad Request
The request sent by the client was syntactically incorrect.

The request was

PUT http://localhost:8080/some/url
Content-Type: text-plain
foo

回答1:

Content-Type: text-plain

is a typo and a bad MIME type. It should be

Content-type: text/plain

This was a bit of a head-scratcher for a while.

来源：https://stackoverflow.com/questions/27929825/the-request-sent-by-the-client-was-syntactically-incorrect-bad-content-typ