基于@RestControllerAdvice与@ControllerAdvice的区别说明

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>5.3.3</version>
</dependency>

@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Component
public @interface ControllerAdvice { 
}

@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@ControllerAdvice
@ResponseBody
public @interface RestControllerAdvice { 
}

/**
 * 全局异常处理类
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {
 
 @ExceptionHandler(Exception.class)
 public Result<String> ExceptionHandler(Exception e) {
  log.error("出现异常:", e);
  return Result.failed(e.getMessage());
 }
}

package com.galen.cloud.portal;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication(scanBasePackages = "com.galen.*")
public class galenPortalApplication {
    public static void main(String[] args) {
        SpringApplication.run(galenPortalApplication.class, args);
    }
}

package com.galen.common.exception;
import com.galen.common.core.domain.R;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.dao.DuplicateKeyException;
import org.springframework.http.HttpStatus;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;
/**
 * 异常处理器
 * @author galen
 */
@RestControllerAdvice
public class GlobalExceptionHandler
{
    private Logger logger = LoggerFactory.getLogger(getClass());
    /**
     * 请求方式不支持
     */
    @ExceptionHandler({HttpRequestMethodNotSupportedException.class})
    @ResponseStatus(code = HttpStatus.METHOD_NOT_ALLOWED)
    public R handleException(HttpRequestMethodNotSupportedException e)
    {
        logger.error(e.getMessage(), e);
        return R.error("不支持' " + e.getMethod() + "'请求");
    }
    /**
     * 拦截未知的运行时异常
     */
    @ExceptionHandler(RuntimeException.class)
    public R notFount(RuntimeException e)
    {
        if (AnnotationUtils.findAnnotation(e.getClass(), ResponseStatus.class) != null)
        {
            throw e;
        }
        logger.error("运行时异常:", e);
        return R.error("运行时异常:" + e.getMessage());
    }
    /**
     * 处理自定义异常
     */
    @ExceptionHandler(galenException.class)
    public R handleWindException(galenException e)
    {
        return R.error(e.getCode(), e.getMessage());
    }
    @ExceptionHandler(DuplicateKeyException.class)
    public R handleDuplicateKeyException(DuplicateKeyException e)
    {
        logger.error(e.getMessage(), e);
        return R.error("数据库中已存在该记录");
    }
    @ExceptionHandler(Exception.class)
    public R handleException(Exception e) throws Exception
    {
        logger.error(e.getMessage(), e);
        return R.error("服务器错误，请联系管理员");
    }
    /**
     * 捕获并处理未授权异常
     *
     * @param e 授权异常
     * @return 统一封装的结果类, 含有代码code和提示信息msg
     */
    @ExceptionHandler(UnauthorizedException.class)
    public R handle401(UnauthorizedException e)
    {
        return R.error(401, e.getMessage());
    }
    // 验证码错误
    @ExceptionHandler(ValidateCodeException.class)
    public R handleCaptcha(ValidateCodeException e)
    {
        return R.error(e.getMessage());
    }
}