springboot-demo/src/main/java/com/example/demo/controller/auth/SecureDemoController.java

package com.example.demo.controller.auth;

import com.example.demo.common.ApiResponse;
import org.springframework.security.core.Authentication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Map;

@RestController
@RequestMapping("/api/secure")
public class SecureDemoController {

    @GetMapping("/me")
    public ApiResponse<Map<String, Object>> me(Authentication authentication) {
        return ApiResponse.ok(Map.of(
                "principal", authentication.getName(),
                "authorities", authentication.getAuthorities(),
                "message", "你已通过学习用 JWT 鉴权"
        ));
    }
}