django自定义异常处理类

1.新建utils/exceptions.py文件

from rest_framework.views import exception_handler

from django.db import DatabaseError
from rest_framework.response import Response
from rest_framework import status

import logging
logger = logging.getLogger('django')




def custom_exception_handler(exc, context):
    """
    自定义异常处理
    :param exc: 异常类
    :param context: 抛出异常的上下文
    :return: Response响应对象
    """
    # 调用drf框架原生的异常处理方法
    response = exception_handler(exc, context)

    if response is None:
        view = context['view']
        if isinstance(exc, DatabaseError):
            # 数据库异常
            logger.error('[%s] %s' % (view, exc))
            response = Response({'message': '服务器内部错误'}, status=status.HTTP_507_INSUFFICIENT_STORAGE)

        if isinstance(exc, Exception):
            # 未知错误
            logger.error('发生未知异常，[%s] %s' % (view, exc))
            response = Response({'message': '服务器出现未知错误'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)

    return response

2.settings.py配置文件中添加

REST_FRAMEWORK = {
    # 异常处理
    'EXCEPTION_HANDLER': 'renranapi.utils.exceptions.custom_exception_handler',
}