Hard coding @PathVariable in Java

Question

I am new to java and am still trying to wrap around my mind around many of its concepts.

Right now in my application that pulls in data from an external api. I am trying to hardcode a path, for now, to make sure that I am getting the response I am expecting (this is a temporary interaction as eventually, I want the app to be stateless. If I pass a hardcoded value for @PathVariable in my controller with the variable defined above the code doesn't read the value.

Where should I be placing the hard-coded value and am I defining it the correct way?

Code:

String identificationCode ="abcd";
@RequestMapping(value ="/download/{identificationCode}", method = RequestMethod.GET)
String downloadDocument(@PathVariable(value="identificationCode") String identificationCode) {
     .
     .
     .
}

Dont you mix up server and client here?

Glains
– Glains

2018-07-27 10:11:22 +00:00
Commented Jul 27, 2018 at 10:11 — Glains
– Glains, Commented Jul 27, 2018 at 10:11

ZhenyaM · Accepted Answer · 2018-07-27 10:13:14Z

0

value is a alias for name. That means that @PathVariable(value="identificationCode") specifies name of variable for this parameter, but not value. See

answered Jul 27, 2018 at 10:13

ZhenyaM

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Comments

davidxxx · Accepted Answer · 2018-07-27 10:14:38Z

Here "/download/{identificationCode}"

identificationCode is not interpolated by the value of the String declared there :

String identificationCode ="abcd";

It will just produce the String : "/download/{identificationCode}".

You could write it :

@RequestMapping(value ="/download/"+identificationCode, method = RequestMethod.GET)

but it will not work either as identificationCode is not a constant expression.

So what you want is just :

@RequestMapping(value ="/download/abc", method = RequestMethod.GET)

Use this way if you don't need to reference the String somewhere else.

Otherwise as alternative declare identificationCode as a constant expression (and you can also do this static by the way) :

final static String identificationCode ="abcd";

And you could so use it :

@RequestMapping(value ="/download/"+identificationCode, method = RequestMethod.GET)

Deepak K Uday · Accepted Answer · 2018-07-27 10:18:41Z

0

Replace {identificationCode} with your hard code value in @RequestMapping(value ="/download/{identificationCode}". Later, when you want the dynamic nature of path, you can go as you have currently coded.

answered Jul 27, 2018 at 10:18

Deepak K Uday

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