CODEWITHSUNDEEP
javaspring
Sal-laS
Sal-laS

Reputation: 11649

pass arithmetic operation with http get request

I am required to pass an arithmetic operation like 2+8 to a restful back-end and receive the result. I know that a simple operation can be handled in frontend using javascript, but i just want to follow the requirement.

I send the operations with the following uri:

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

and in the back-end i have:

@RequestMapping("/")
public String getAnswer(@RequestParam("question") String question){

    System.out.println("recieved question is: "+question);
    return botService.Evaluator(question);
}

When i print the question it is like 2 3 so there is no operation there. And the component complains with:

javax.script.ScriptException: <eval>:1:2 Expected ; but found 5
2 5
  ^ in <eval> at line number 1 at column number 2

So, why the + is missing? and how can i fix it?

Upvotes: 0

Views: 445

Answers (3)

Umais Gillani
Umais Gillani

Reputation: 608

You need URL Encoding here. for more details regarding URL Encoding please have a look in below link.

URL Encoding

Upvotes: 0

Kayaman
Kayaman

Reputation: 73558

Use the URLEncoder class to make sure any special characters are encoded safely for transport.

Upvotes: 2

TedTrippin
TedTrippin

Reputation: 3667

You need to encode the '+' symbol as the server will just translate it as a space.

Send...

http://localhost:8080/?question=2%2B5

Upvotes: 0

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