Spring boot controller URL validation

Question

I have some Sprint controller Mapping like below.

@GetMapping("/hello/{name}/age")
    private String hello(@PathVariable(value = "name", required = true) String name){
        //...
    }

   @GetMapping("/hello/{name}")
    private String hello(@PathVariable(value = "name", required = true) String name){
        //...
    }

    @GetMapping("/name")
    private ResponseEntity<?> queryPerson(@RequestParam(value = "query", required = false) String query) {
        // ...
    }

But there is a client expetection to handle the below case

when client sends /hello/john/age, I should return age related pojo but when client calls /hello//age I have to return 400 with invalid user name as error.

Since im my code I already have other mapping hello/{name} so it is calling this API and trying to find username='age' and returing 404.

Here I am suppossed to 400 when user calls /hello//age, so how to handle this in spring?

Simon Martinelli · Accepted Answer · 2020-04-25 14:04:37Z

1

There will be no chance to create a 400.

Tomcat is collapsing the double slashes:

http://mail-archives.apache.org/mod_mbox/tomcat-users/201912.mbox/%[email protected]%3E

answered Apr 25, 2020 at 14:04

Simon Martinelli

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