java - pass arithmetic operation with http get request -


i required pass arithmetic operation 2+8 restful back-end , receive result. know simple operation can handled in frontend using javascript, want follow requirement.

i send operations following uri:

http://localhost:8080/?question=2+5

and in back-end have:

@requestmapping("/") public string getanswer(@requestparam("question") string question){      system.out.println("recieved question is: "+question);     return botservice.evaluator(question); }

when print question 2 3 there no operation there. , component complains with:

javax.script.scriptexception: <eval>:1:2 expected ; found 5 2 5   ^ in <eval> @ line number 1 @ column number 2

so, why the + is missing? , how can fix it?

use urlencoder class make sure special characters encoded safely transport.


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