CODEWITHSUNDEEP
jsonservletshttprequestcontent-typehttp-request
yathirigan
yathirigan

Reputation: 6079

How to determine Content Type of a HTTP Servlet Request?

How can I get the content type from the HttpServletRequest without reading the request body?

When I use the following, I get null:

request.getContentType()

When I try to read the JSON data that comes in the request body using the following:

StringBuilder jsonsb = new StringBuilder();
BufferedReader jsonbr = request.getReader();

The request.getReader() throws 

Caused by: java.lang.NullPointerException: null
    at java.io.ByteArrayInputStream.<init>(ByteArrayInputStream.java:106)

I even tried using the following and was able to get the content type but, still getting the same NullPointerException while getting the reader from request after this statement.

request.getHeader("Accept")

Upvotes: 3

Views: 11362

Answers (1)

rootExplorr
rootExplorr

Reputation: 575

Are you handling a GET request. That might not contain a Content-Types header and therefore you are seeing a null there.

Upvotes: 6

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