[BUG] I want to modify the content-type of returning data, but the modified Content-Type cannot take effect

[creabob]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

in this case, HTTP return json data, I want to change to the return format of XML, but the Content-Type cannot be modified.

Expected Behavior

i can change the response header in exchange,
exchange.getResponse().getHeaders().setContentType(xxx)

Steps To Reproduce

modify the body and header of response.
return changed body but the content-type of response header un-changed

Environment

ShenYu version(s):
master

Debug logs

No response

Anything else?

content-type use single method to require, However, it is not obtained from exchange but from Attribute, when i add this line code ,it can fix ,is it correct?

[moremind]

what?

[creabob]

in modifyResponse plugin, i add this conditions, addKey success, but modify key failed .

[creabob]

当我修改返回值的header头时，content-type字段无法修改，无论是我自定义的插件还是modifyResponse插件，都不成功。
我修改的方式是加入这段代码
exchange.getResponse().getHeaders().setContentType(xxx)

当我debug时，发现content-type有单独的方法去获取，可是并不是通过exchange的值获取。

我想问，正确修改response的content-type方式是什么？