No longer use URL path parameters

Sep 4, 2024#JavaWeb #异常 #java #前端47

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The backend interface is set up to receive a POST request at "/test" with a parameter "account" and return a message with the account value. The frontend request path should be modified to avoid special characters in the URL by either encoding them or switching to passing parameters in the request body instead of the URL.

This is my backend interface:

@PostMapping("/test")
public String test(@RequestParam String account) {
    return "Hello, World! " + account;
}

This is the frontend request path:

http://localhost:8088/api/test/test?account=[111]

At first glance, there doesn't seem to be any problem, but in reality, URLs do not support special characters such as +, spaces, /, ?, %, #, &, =, etc. If you want to pass parameters by concatenating the request, you must escape these special characters.

Solution 1#

Change the request to:

http://localhost:8088/api/test/test?account=%5B111%5D

Reached the breakpoint

Solution 2#

The best solution is to avoid using URL path parameters and instead use form parameters in the body.