@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@ControllerAdvice
@ResponseBody
public @interface RestControllerAdvice {
    // 可指定包路徑或控制器類
    @AliasFor(annotation = ControllerAdvice.class)
    String[] value() default {};
}

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface ExceptionHandler {
    // 指定要處理的異常類數(shù)組
    Class<? extends Throwable>[] value() default {};
}

import com.sheep.shrine.result.JSONResult;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
/**
 * 全局異常處理器
 * @RestControllerAdvice = @ControllerAdvice + @ResponseBody
 */
@RestControllerAdvice
public class GlobalExceptionHandler {
    /**
     * 處理自定義業(yè)務(wù)異常
     */
    @ExceptionHandler(GlobleException.class)
    public JSONResult handleBusinessException(GlobleException e) {
        e.printStackTrace();
        return JSONResult.error(e.getMessage());
    }
    /**
     * 處理所有未捕獲異常
     */
    @ExceptionHandler(Exception.class)
    public JSONResult handleSystemException(Exception e) {
        e.printStackTrace();
        return JSONResult.error("系統(tǒng)異常，正在毆打程序員...", "50000");
    }
}

// 處理數(shù)據(jù)校驗異常
@ExceptionHandler(MethodArgumentNotValidException.class)
public JSONResult handleValidException(MethodArgumentNotValidException e) {
    String message = e.getBindingResult().getAllErrors()
            .stream()
            .map(DefaultMessageSourceResolvable::getDefaultMessage)
            .collect(Collectors.joining("; "));
    return JSONResult.error(message);
}
// 處理數(shù)據(jù)庫異常
@ExceptionHandler(DataAccessException.class)
public JSONResult handleDataAccessException(DataAccessException e) {
    log.error("數(shù)據(jù)庫操作異常", e);
    return JSONResult.error("數(shù)據(jù)庫服務(wù)異常");
}

@ExceptionHandler(UnauthorizedException.class)
@ResponseStatus(HttpStatus.FORBIDDEN)
public JSONResult handleUnauthorizedException(UnauthorizedException e) {
    return JSONResult.error("無權(quán)限訪問", "403");
}

@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {
    @ExceptionHandler(Exception.class)
    public JSONResult handleException(Exception e) {
        log.error("系統(tǒng)異常: {}", e.getMessage(), e);
        return JSONResult.error("系統(tǒng)繁忙");
    }
}

@SpringBootTest
class GlobalExceptionHandlerTest {
    @Autowired
    private WebApplicationContext context;
    private MockMvc mockMvc;
    @BeforeEach
    void setup() {
        mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
    }
    @Test
    void testBusinessException() throws Exception {
        mockMvc.perform(get("/api/test-exception"))
               .andExpect(status().isOk())
               .andExpect(jsonPath("$.code").value("50000"));
    }
}

@Configuration
public class FeignConfig {
    @Bean
    public ErrorDecoder errorDecoder() {
        return (methodKey, response) -> {
            // 將Feign異常轉(zhuǎn)換為自定義異常
            return new BusinessException("遠(yuǎn)程服務(wù)調(diào)用失敗");
        };
    }
}