How to send Data from Tomcat Server to Client?

Question

I need to write a function that gets a Json via Spring and deliver a Data. The case is that a customer is sending me a Filename and im looking in a database where the file is and send him the data. I only need a little kickstart and someone who can answer me to my Questions:

Do I really need Sockets for this?
What for a Stream I should use (Its several Datatypes likes Pictures, Documents, Pdf....)
How can I identify the Destination to send

You could just send the data as a response to the incoming request, if that's acceptable for you? — fvu, Mar 10 '14 at 16:01
Yes that would be right but how can i realize that ? Thank you for yoru answer :-) — Artur Rem, Mar 10 '14 at 16:15

score 1 · Accepted Answer · answered Mar 10 '14 at 16:10

1

You can use Response like this :

String yourData;
JsonWriter writer = new JsonWriter(response.getWriter());
    writer.beginObject();
    writer.name("data").value(yourData);
    writer.endObject();
    writer.close();

answered Mar 10 '14 at 16:10

HeLL

153
6

Is that rly so easy? my data can be an Image or else. Will the Download windows appear when im doing this ? Excuse my Questions but im very new to File stuff. – Artur Rem Mar 10 '14 at 16:17
it's just a simple example to make ideas you cas see this for image http://stackoverflow.com/questions/2979758/writing-image-to-servlet-response-with-best-performance – HeLL Mar 10 '14 at 16:31

How to send Data from Tomcat Server to Client?

1 Answers1