java - How do you store information in session memory in spring mvc to fetch later? -

i have unique situation in want store array of integers memory via post. think want fetch data later request.

this may seem strange, , weird, have use case, , in memory few seconds.

a simple example -- store array somearray = [1, 2, 3]; in sort of in memory storage post, , retrieve via in function.

since have access httpservletrequest in controller, have invoke getsession method:

httpsession session = request.getsession(false); 

now have access session, can store, retrieve , remove data using relevant methods:

• httpsession#setattribute
• httpsession#getattribute
• httpsession#removeattribute

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as said in comments, can omit getting session manually , send parameter method @controller. taken this answer

@requestmapping...) public string processsubmit(..., httpsession session, ...) {     object anattribute = session.getattribute("anattribute"); }