How to convert one request param into several request params in Spring before calling a controller?

Question

The client sends some data in one request param like:

example.com/test?myparam=some123data

I would like to convert myparam into several other params and call a necessary controller with such parameters. Like this one:

@RequestMapping(value = "/test")
public @ResponseBody MyObject test(
    @RequestParam(value = "prefix") String prefix, // some
    @RequestParam(value = "number") int number, // 123
    @RequestParam(value = "suffix") String suffix)  //data
{ ... }

It is possible to put some custom converter for such situation?

Ervin Szilagyi · Accepted Answer · 2018-08-12 12:24:26Z

2

I'm not really sure if it can be made wit request params. Instead, you could use path variables with regular expressions in the following way:

@RequestMapping(value = "/test/{prefix:[a-z]+}{number:[0-9]+}{suffix:[a-z]+}")
public @ResponseBody MyObject test(
    @PathVariable(value = "prefix") String prefix, // some
    @PathVariable(value = "number") int number, // 123
    @PathVariable(value = "suffix") String suffix)  //data
{ ... }

In this case your request URL will look like this:

example.com/test/some123data

answered Aug 12, 2018 at 12:24

Ervin Szilagyi

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1 Comment

Oleksandr Over a year ago

Thank you for your solution! Your method solves the problem above but I will leave the question open because I need a little bit more logic here than regex.

Max Farsikov · Accepted Answer · 2018-08-12 11:44:45Z

0

You can try to implement your own argument resolver, here an example

answered Aug 12, 2018 at 11:44

Max Farsikov

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