Sending a Java object through javascript AJAX

Question

Currently I have a Java servlet that takes in a serialized POJO through the request. It works when I send a request from a Java client to the servlet. My question is: is there a way to make such a request through JavaScript using AJAX passing the Java object directly as opposed to converting it to a JSON first? This is how my server receives the Java object

ObjectInputStream inData = new ObjectInputStream (request.getInputStream());
SomeClass mUser = (SomeClass) inData.readObject();

Yes, I wanted to send an AJAX POST request in javascript specifically — user3125693
– user3125693, Commented Sep 22, 2015 at 16:58

Community · Accepted Answer · 2017-05-23 11:59:49Z

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A Java object is just an instance of a class in memory. When you pass data from client to server, it has to be serialized one way or another.

edited May 23, 2017 at 11:59

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answered Sep 22, 2015 at 16:52

Amila

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user3125693 Over a year ago

My POJO implements the serializable interface. I just wanted to be able to send a request through JavaScript AJAX with this POJO attached. Is there an easy way for me to do that? I can't seem to find it anywher eonline

Kevin Hooke · Accepted Answer · 2015-09-22 17:05:50Z

0

No, you have to convert the representation of the Java class instance into something that JavaScript can parse and handle. Java != JavaScript, the two are different technologies.

There are many libraries/frameworks that can help you with the conversion back and forth though. Rather than object serialization, look at using JAX-RS for your serverside resource, and a mapping library like Jackson to map JSON to Java and back.

answered Sep 22, 2015 at 17:05

Kevin Hooke

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