六，Django异常处理

新建utils/exceptions.py

import logging

from rest_framework.views import exception_handler
from rest_framework.response import Response
from rest_framework import status

from django.db import DatabaseError

logger = logging.getLogger("django")

def custom_exception_handler(exc, context):
    """
    自定义异常处理
    :param exc: 异常类实例对象
    :param context: 抛出异常的执行上下文[context，是一个字典格式的数据，里面记录了异常发生时的环境信息]
    :return: Response 响应对象
    """
    # 先让drf内置的异常处理函数先解决掉它能识别的异常
    response = exception_handler(exc, context)
    
    if response is None:
        """drf无法处理的异常"""
        view = context["view"]
        if isinstance(exc, DatabaseError):
            logger.error('[%s] %s' % (view, exc))
            response = Response({"errmsg":"服务器内部存储错误"}, status=status.HTTP_507_INSUFFICIENT_STORAGE)
        
    return response

settings.py配置文件中添加

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