No longer use URL paths for parameter passing.

Sep 4, 2024#JavaWeb #异常 #java #前端58

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The backend interface has a method that takes a parameter and returns a string. The frontend request path contains special characters that need to be escaped. The solution is to either escape the special characters in the URL or pass parameters directly 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 seems to be no problem, but in reality, URLs do not support special characters such as +, space, /, ?, %, #, &, =, 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 not use URL path parameters, and instead use form parameters in the body.