统一异常处理

利用@ControllerAdvice 注解来捕获控制器抛出的异常

import com.educationtek.common.domain.vo.ResultVo;
import com.educationtek.common.utils.ResultUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;

@ControllerAdvice
@Slf4j
public class GlobalExceptionHandler {
    @ExceptionHandler(value = Exception.class)
    @ResponseBody
    public ResultVo jsonErrorHandlerException(HttpServletRequest req, Exception e) {
        log.error("调用url:{}, 报错信息：{}",req.getRequestURL().toString(),e.getMessage());
        e.printStackTrace();

        if (e instanceof MarkingException) {
            MarkingException exception = (MarkingException) e;
            return ResultUtils.error(exception.getCode(), exception.getMessage());
        } else if (e instanceof BaseException) {
            BaseException exception = (BaseException) e;
            return ResultUtils.error(exception.getCode(), exception.getMessage());
        } else {
            return ResultUtils.error(-1, e.getMessage());
        }
    }
}

把这个类放在Common包下的exception包下，后面在每个模块下的主程序Application类使用@ComponentScan注解引入进来，第一个参数是GlobalExceptionHandler所在的包名，第二个参数为Application所在的包名

@ComponentScan(basePackages = {"com.educationtek.common.exception", "com.educationtek.hystrix"})