How to run two servlets parallely

Question

I have two servlets (e.g. servlet1.java, servlet2.java). I want to run two servlets in parallel with one request. How can I achieve this?

I have some idea about multithreading concepts but I have no idea how to implement this.

This has no sense... a Servlet is made to answer a Http Request. Give a scenario to understand what are you trying to achieve. — Carlos Verdes, Dec 23 '14 at 11:30
How is this related to Android? I am removing the Android tag for now. Please add it back and edit the question if you see it fit. — Sid, Dec 23 '14 at 11:37

score 2 · Answer 1 · edited Dec 25 '14 at 12:07

2

Actually there is no way to do that. For a single HTTP request you cannot pass it to two servlets.

The request belongs to only one servlet.

In a Java EE application every servlet acts as a thread.

One HTTP request belongs to one servlet only. Maybe an HTTP response can be passed to some other servlet (servlet chaining).

edited Dec 25 '14 at 12:07

Arjan Tijms

answered Dec 23 '14 at 11:33

Vignesh Shiv

score 0 · Answer 2 · edited May 23 '17 at 12:12

0

Really not sure why you wold want to do this? What's your use case?

How would the response form each servlet be handled and returned back to the client?

If you need to spawn a thread during the servlet's doGet or doPost method, then I suggest taking a look at this answer

Depending on your usecase though it may be better to implement your thread using a servlet filter.

edited May 23 '17 at 12:12

Community

answered Dec 23 '14 at 11:34

Steve Atkinson

score 0 · Answer 3 · answered Dec 23 '14 at 11:37

0

If you want a single thread to pass through two classes on server side, think of using Servlet filters

answered Dec 23 '14 at 11:37

Sid

3 Answers3