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// 后端API示例 - 用户登录验证

@RestController

@RequestMapping("/api/auth")

public class AuthController {

@PostMapping("/login")

public ResponseEntity login(@RequestBody LoginRequest request) {

if (authenticate(request.getUsername(), request.getPassword())) {

String token = JWT.create()

.withSubject(request.getUsername())

.sign(Algorithm.HMAC512("secret"));

return ResponseEntity.ok(new JwtResponse(token));

}

return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body("Invalid credentials");

}

private boolean authenticate(String username, String password) {

// 模拟认证逻辑

return "admin".equals(username) && "password123".equals(password);

}

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}

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