How to set contentType to applicaton json with ktor client I

Question

How to set contentType to applicaton json with ktor client I tried both `headers HttpHeaders ContentType = ContentType Application Json toString ` and `contentType ContentType Application Json ` but I get an exception `io ktor http UnsafeHeaderException Header Content Type is controlled by the engine and cannot be set explicitly` How to set it with the engine Considering I m using ios so I m not sure I can use ktor client json

Deactivated User · Answer

Deactivated User · Answer

`body = TextContent json ContentType Application Json `

Deactivated User · Answer

seems that the doc about json in that page is outdated

Deactivated User · Answer

Deactivated User · Answer

Let me know if this works for you <https github com ktorio ktorio github io commit e5e83bf152a2fd6f82e1583b687e8ea59082a63d>

coletz · Answer

using TextContent with ContentType Application Json worked Thanks

ketilsan · Answer

Im trying to achieve something similar but the content type i want to set is not recognised by ktor contenttype enum If I try to set it explicitly I get the same error as Dario I have to set the following content type to call a external rest endpoint ```application xacml+json```

spand · Answer

Maybe I am just using an old version but `ContentType` is a class here Cant you just call the constructor with what you want it to be

lukaswelte · Answer

That is a really good question < ketilsan> I solved a similar issue by creating my own `JsonFeature` I wanted to have the result directly parsed as JSON

ketilsan · Answer

< spand> hmm maybe I will try that < lukaswelte> I will have to try that if what Johannes suggested doesn t work

ketilsan · Answer

thanks for the suggestions

ketilsan · Answer

```ContentType create myMimeType ``` seems promising edit nah was looking at the wrong ContentType class

cmgurba · Answer

In those examples we are setting the content type header via body for POST PUT PATCH etc how can we set content type for GETs given that the old way no longer works thinking face

coletz · Answer

Not sure on what I m going to say but afaik content type is for the type of the content in the request and with a GET there is no content at all If you need to set the content of the response that s not done with this