{"id":6138,"date":"2022-04-05T18:37:22","date_gmt":"2022-04-05T10:37:22","guid":{"rendered":"https:\/\/egonlin.com\/?p=6138"},"modified":"2022-04-16T19:50:04","modified_gmt":"2022-04-16T11:50:04","slug":"%e7%ac%ac%e5%8d%81%e4%ba%94%e8%8a%82%ef%bc%9a%e4%b8%ad%e9%97%b4%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=6138","title":{"rendered":"\u7b2c\u5341\u4e94\u8282\uff1a\u4e2d\u95f4\u4ef6"},"content":{"rendered":"

\u4e2d\u95f4\u4ef6<\/h1>\n

\"\"<\/div><\/p>\n

\u4e00\u3001\u4e2d\u95f4\u4ef6\u4ecb\u7ecd<\/h2>\n

\u5b98\u65b9\u7684\u8bf4\u6cd5\uff1a\u4e2d\u95f4\u4ef6\u662f\u4e00\u4e2a\u7528\u6765\u5904\u7406Django\u7684\u8bf7\u6c42\u548c\u54cd\u5e94\u7684\u6846\u67b6\u7ea7\u522b\u7684\u94a9\u5b50\u3002\u5b83\u662f\u4e00\u4e2a\u8f7b\u91cf\u3001\u4f4e\u7ea7\u522b\u7684\u63d2\u4ef6\u7cfb\u7edf\uff0c\u7528\u4e8e\u5728\u5168\u5c40\u8303\u56f4\u5185\u6539\u53d8Django\u7684\u8f93\u5165\u548c\u8f93\u51fa\u3002\u6bcf\u4e2a\u4e2d\u95f4\u4ef6\u7ec4\u4ef6\u90fd\u8d1f\u8d23\u505a\u4e00\u4e9b\u7279\u5b9a\u7684\u529f\u80fd\u3002<\/p>\n

\u4f46\u662f\u7531\u4e8e\u5176\u5f71\u54cd\u7684\u662f\u5168\u5c40\uff0c\u6240\u4ee5\u9700\u8981\u8c28\u614e\u4f7f\u7528\uff0c\u4f7f\u7528\u4e0d\u5f53\u4f1a\u5f71\u54cd\u6027\u80fd\u3002<\/p>\n

\u8bf4\u7684\u76f4\u767d\u4e00\u70b9\u4e2d\u95f4\u4ef6\u662f\u5e2e\u52a9\u6211\u4eec\u5728\u89c6\u56fe\u51fd\u6570\u6267\u884c\u4e4b\u524d\u548c\u6267\u884c\u4e4b\u540e\u90fd\u53ef\u4ee5\u505a\u4e00\u4e9b\u989d\u5916\u7684\u64cd\u4f5c\uff0c\u5b83\u672c\u8d28\u4e0a\u5c31\u662f\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7c7b\uff0c\u7c7b\u4e2d\u5b9a\u4e49\u4e86\u51e0\u4e2a\u65b9\u6cd5\uff0cDjango\u6846\u67b6\u4f1a\u5728\u8bf7\u6c42\u7684\u7279\u5b9a\u7684\u65f6\u95f4\u53bb\u6267\u884c\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n

\u6211\u4eec\u4e00\u76f4\u90fd\u5728\u4f7f\u7528\u4e2d\u95f4\u4ef6\uff0c\u53ea\u662f\u6ca1\u6709\u6ce8\u610f\u5230\u800c\u5df2\uff0c\u6253\u5f00Django\u9879\u76ee\u7684Settings.py\u6587\u4ef6\uff0c\u770b\u5230\u4e0b\u56fe\u7684MIDDLEWARE\u914d\u7f6e\u9879\u3002<\/p>\n

MIDDLEWARE = [\n    'django.middleware.security.SecurityMiddleware',\n    'django.contrib.sessions.middleware.SessionMiddleware',\n    'django.middleware.common.CommonMiddleware',\n    'django.middleware.csrf.CsrfViewMiddleware',\n    'django.contrib.auth.middleware.AuthenticationMiddleware',\n    'django.contrib.messages.middleware.MessageMiddleware',\n    'django.middleware.clickjacking.XFrameOptionsMiddleware',\n]<\/code><\/pre>\n
MIDDLEWARE\u914d\u7f6e\u9879\u662f\u4e00\u4e2a\u5217\u8868(\u5217\u8868\u662f\u6709\u5e8f\u7684\uff0c\u8bb0\u4f4f\u8fd9\u4e00\u70b9\uff0c\u540e\u9762\u4f60\u5c31\u77e5\u9053\u4e3a\u4ec0\u4e48\u8981\u5f3a\u8c03\u6709\u5e8f\u4e8c\u5b57)\uff0c\u5217\u8868\u4e2d\u662f\u4e00\u4e2a\u4e2a\u5b57\u7b26\u4e32\uff0c\u8fd9\u4e9b\u5b57\u7b26\u4e32\u5176\u5b9e\u662f\u4e00\u4e2a\u4e2a\u7c7b\uff0c\u4e5f\u5c31\u662f\u4e00\u4e2a\u4e2a\u4e2d\u95f4\u4ef6\u3002<\/p>\n
\u6211\u4eec\u4e4b\u524d\u5df2\u7ecf\u63a5\u89e6\u8fc7\u4e00\u4e2acsrf\u76f8\u5173\u7684\u4e2d\u95f4\u4ef6\u4e86\uff1f\u6211\u4eec\u4e00\u5f00\u59cb\u8ba9\u5927\u5bb6\u628a\u4ed6\u6ce8\u91ca\u6389\uff0c\u518d\u63d0\u4ea4post\u8bf7\u6c42\u7684\u65f6\u5019\uff0c\u5c31\u4e0d\u4f1a\u88abforbidden\u4e86\uff0c\u540e\u6765\u5b66\u4f1a\u4f7f\u7528csrf_token\u4e4b\u540e\u5c31\u4e0d\u518d\u6ce8\u91ca\u8fd9\u4e2a\u4e2d\u95f4\u4ef6\u4e86\u3002<\/p>\n
\u90a3\u63a5\u4e0b\u6765\u5c31\u5b66\u4e60\u4e2d\u95f4\u4ef6\u4e2d\u7684\u65b9\u6cd5\u4ee5\u53ca\u8fd9\u4e9b\u65b9\u6cd5\u4ec0\u4e48\u65f6\u5019\u88ab\u6267\u884c\u3002<\/p>\n
\u4e8c\u3001\u81ea\u5b9a\u4e49\u4e2d\u95f4\u4ef6<\/h2>\n
\u4e2d\u95f4\u4ef6\u53ef\u4ee5\u5b9a\u4e49\u4e94\u4e2a\u65b9\u6cd5\uff0c\u5206\u522b\u662f\uff1a\uff08\u4e3b\u8981\u7684\u662fprocess_request\u548cprocess_response\uff09<\/p>\n
process_request(self,request)\nprocess_view(self, request, view_func, view_args, view_kwargs)\nprocess_template_response(self,request,response)\nprocess_exception(self, request, exception)\nprocess_response(self, request, response)<\/code><\/pre>\n
\u4ee5\u4e0a\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u53ef\u4ee5\u662fNone\u6216\u4e00\u4e2aHttpResponse\u5bf9\u8c61\uff0c\u5982\u679c\u662fNone\uff0c\u5219\u7ee7\u7eed\u6309\u7167django\u5b9a\u4e49\u7684\u89c4\u5219\u5411\u540e\u7ee7\u7eed\u6267\u884c\uff0c\u5982\u679c\u662fHttpResponse\u5bf9\u8c61\uff0c\u5219\u76f4\u63a5\u5c06\u8be5\u5bf9\u8c61\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n
\u81ea\u5b9a\u4e49\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u793a\u4f8b<\/p>\n
\"\"<\/div>
\n
\"\"<\/div><\/p>\n
1\u3001process_request<\/h3>\n
process_request\u6709\u4e00\u4e2a\u53c2\u6570\uff0c\u5c31\u662frequest\uff0c\u8fd9\u4e2arequest\u548c\u89c6\u56fe\u51fd\u6570\u4e2d\u7684request\u662f\u4e00\u6837\u7684(\u5728\u4ea4\u7ed9Django\u540e\u9762\u7684\u8def\u7531\u4e4b\u524d\uff0c\u5bf9\u8fd9\u4e2arequest\u5bf9\u8c61\u53ef\u4ee5\u8fdb\u884c\u4e00\u7cfb\u5217\u7684\u64cd\u4f5c)\u3002<\/p>\n
\u7531\u4e8erequest\u5bf9\u8c61\u662f\u4e00\u6837\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5bf9request\u5bf9\u8c61\u8fdb\u884c\u4e00\u7cfb\u5217\u7684\u64cd\u4f5c\uff0c\u5305\u62ecrequest.\u53d8\u91cf\u540d=\u53d8\u91cf\u503c,\u8fd9\u6837\u7684\u64cd\u4f5c\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u540e\u7eed\u7684\u89c6\u56fe\u51fd\u6570\u4e2d\u901a\u8fc7\u76f8\u540c\u7684\u65b9\u5f0f\u5373\u53ef\u83b7\u53d6\u5230\u6211\u4eec\u5728\u4e2d\u95f4\u4ef6\u4e2d\u8bbe\u7f6e\u7684\u503c\u3002<\/p>\n
\u5b83\u7684\u8fd4\u56de\u503c\u53ef\u4ee5\u662fNone\u4e5f\u53ef\u4ee5\u662fHttpResponse\u5bf9\u8c61\u3002\u8fd4\u56de\u503c\u662fNone\u7684\u8bdd\uff0c\u6309\u6b63\u5e38\u6d41\u7a0b\u7ee7\u7eed\u8d70\uff0c\u4ea4\u7ed9\u4e0b\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u5904\u7406\uff0c\u5982\u679c\u662fHttpResponse\u5bf9\u8c61\uff0cDjango\u5c06\u4e0d\u6267\u884c\u89c6\u56fe\u51fd\u6570\uff0c\u800c\u5c06\u76f8\u5e94\u5bf9\u8c61\u8fd4\u56de\u7ed9\u6d4f\u89c8\u5668\u3002<\/p>\n
\u6211\u4eec\u6765\u770b\u770b\u591a\u4e2a\u4e2d\u95f4\u4ef6\u65f6\uff0cDjango\u662f\u5982\u4f55\u6267\u884c\u5176\u4e2d\u7684process_request\u65b9\u6cd5\u7684\u3002<\/p>\n
from django.utils.deprecation import MiddlewareMixin\n\nclass MD1(MiddlewareMixin):\n\n    def process_request(self, request):\n        print("MD1\u91cc\u9762\u7684 process_request")\n\nclass MD2(MiddlewareMixin):\n    def process_request(self, request):\n        print("MD2\u91cc\u9762\u7684 process_request")\n        pass<\/code><\/pre>\n
\u5728settings.py\u7684MIDDLEWARE\u914d\u7f6e\u9879\u4e2d\u6ce8\u518c\u4e0a\u8ff0\u4e24\u4e2a\u81ea\u5b9a\u4e49\u4e2d\u95f4\u4ef6\uff1a<\/p>\n
MIDDLEWARE = [\n    'django.middleware.security.SecurityMiddleware',\n    'django.contrib.sessions.middleware.SessionMiddleware',\n    'django.middleware.common.CommonMiddleware',\n    'django.middleware.csrf.CsrfViewMiddleware',\n    'django.contrib.auth.middleware.AuthenticationMiddleware',\n    'django.contrib.messages.middleware.MessageMiddleware',\n    'django.middleware.clickjacking.XFrameOptionsMiddleware',\n    'middlewares.MD1',  # \u81ea\u5b9a\u4e49\u4e2d\u95f4\u4ef6MD1\n'middlewares.MD2'  # \u81ea\u5b9a\u4e49\u4e2d\u95f4\u4ef6MD2<\/code><\/pre>\n
\u6b64\u65f6\uff0c\u6211\u4eec\u8bbf\u95ee\u4e00\u4e2a\u89c6\u56fe\uff0c\u4f1a\u53d1\u73b0\u7ec8\u7aef\u4e2d\u6253\u5370\u5982\u4e0b\u5185\u5bb9\uff1a<\/p>\n
MD1\u91cc\u9762\u7684 process_request\nMD2\u91cc\u9762\u7684 process_request\napp01 \u4e2d\u7684 index\u89c6\u56fe<\/code><\/pre>\n
\u628aMD1\u548cMD2\u7684\u4f4d\u7f6e\u8c03\u6362\u4e00\u4e0b\uff0c\u518d\u8bbf\u95ee\u4e00\u4e2a\u89c6\u56fe\uff0c\u4f1a\u53d1\u73b0\u7ec8\u7aef\u4e2d\u6253\u5370\u7684\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n
MD2\u91cc\u9762\u7684 process_request\nMD1\u91cc\u9762\u7684 process_request\napp01 \u4e2d\u7684 index\u89c6\u56fe<\/code><\/pre>\n
\u770b\u7ed3\u679c\u6211\u4eec\u77e5\u9053\uff1a\u89c6\u56fe\u51fd\u6570\u8fd8\u662f\u6700\u540e\u6267\u884c\u7684\uff0cMD2\u6bd4MD1\u5148\u6267\u884c\u81ea\u5df1\u7684process_request\u65b9\u6cd5\u3002<\/p>\n
\u5728\u6253\u5370\u4e00\u4e0b\u4e24\u4e2a\u81ea\u5b9a\u4e49\u4e2d\u95f4\u4ef6\u4e2dprocess_request\u65b9\u6cd5\u4e2d\u7684request\u53c2\u6570\uff0c\u4f1a\u53d1\u73b0\u5b83\u4eec\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n
\u7531\u6b64\u603b\u7ed3\u4e00\u4e0b\uff1a<\/p>\n
l \u4e2d\u95f4\u4ef6\u7684process_request\u65b9\u6cd5\u662f\u5728\u6267\u884c\u89c6\u56fe\u51fd\u6570\u4e4b\u524d\u6267\u884c\u7684\u3002<\/p>\n
l \u5f53\u914d\u7f6e\u591a\u4e2a\u4e2d\u95f4\u4ef6\u65f6\uff0c\u4f1a\u6309\u7167MIDDLEWARE\u4e2d\u7684\u6ce8\u518c\u987a\u5e8f\uff0c\u4e5f\u5c31\u662f\u5217\u8868\u7684\u7d22\u5f15\u503c\uff0c\u4ece\u524d\u5230\u540e\u4f9d\u6b21\u6267\u884c\u7684\u3002<\/p>\n
l \u4e0d\u540c\u4e2d\u95f4\u4ef6\u4e4b\u95f4\u4f20\u9012\u7684request\u90fd\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61<\/p>\n
2\u3001process_response<\/h3>\n
\u591a\u4e2a\u4e2d\u95f4\u4ef6\u4e2d\u7684process_response\u65b9\u6cd5\u662f\u6309\u7167MIDDLEWARE\u4e2d\u7684\u6ce8\u518c\u987a\u5e8f\u5012\u5e8f\u6267\u884c\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u7b2c\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u7684process_request\u65b9\u6cd5\u9996\u5148\u6267\u884c\uff0c\u800c\u5b83\u7684process_response\u65b9\u6cd5\u6700\u540e\u6267\u884c\uff0c\u6700\u540e\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u7684process_request\u65b9\u6cd5\u6700\u540e\u4e00\u4e2a\u6267\u884c\uff0c\u5b83\u7684process_response\u65b9\u6cd5\u662f\u6700\u5148\u6267\u884c\u3002\n\u5b9a\u4e49process_response\u65b9\u6cd5\u65f6\uff0c\u5fc5\u987b\u7ed9\u65b9\u6cd5\u4f20\u5165\u4e24\u4e2a\u5f62\u53c2\uff0crequest\u548cresponse\u3002request\u5c31\u662f\u4e0a\u8ff0\u4f8b\u5b50\u4e2d\u4e00\u6837\u7684\u5bf9\u8c61\uff0cresponse\u662f\u89c6\u56fe\u51fd\u6570\u8fd4\u56de\u7684HttpResponse\u5bf9\u8c61(\u4e5f\u5c31\u662f\u8bf4\u8fd9\u662fDjango\u540e\u53f0\u5904\u7406\u5b8c\u4e4b\u540e\u7ed9\u51fa\u4e00\u4e2a\u7684\u4e00\u4e2a\u5177\u4f53\u7684\u89c6\u56fe)\u3002\u8be5\u65b9\u6cd5\u7684\u8fd4\u56de\u503c(\u5fc5\u987b\u8981\u6709\u8fd4\u56de\u503c)\u4e5f\u5fc5\u987b\u662fHttpResponse\u5bf9\u8c61\u3002\u5982\u679c\u4e0d\u8fd4\u56deresponse\u800c\u8fd4\u56de\u5176\u4ed6\u5bf9\u8c61\uff0c\u5219\u6d4f\u89c8\u5668\u4e0d\u4f1a\u62ff\u5230Django\u540e\u53f0\u7ed9\u4ed6\u7684\u89c6\u56fe\uff0c\u800c\u662f\u6211\u7684\u4e2d\u95f4\u4ef6\u4e2d\u8fd4\u56de\u7684\u5bf9\u8c61<\/code><\/pre>\n
from django.utils.deprecation import MiddlewareMixin\n\nclass MD1(MiddlewareMixin):\n\n    def process_request(self, request):\n        print("MD1\u91cc\u9762\u7684 process_request")\n\n    def process_response(self, request, response):\n        print("MD1\u91cc\u9762\u7684 process_response")\n        return response\n\nclass MD2(MiddlewareMixin):\n    def process_request(self, request):\n        print("MD2\u91cc\u9762\u7684 process_request")\n        pass\n\n    def process_response(self, request, response):\n        print("MD2\u91cc\u9762\u7684 process_response")\n        return response\u8bbf\u95ee\u4e00\u4e2a\u89c6\u56fe\uff0c\u770b\u4e00\u4e0b\u7ec8\u7aef\u7684\u8f93\u51fa\uff1a\nMD2\u91cc\u9762\u7684 process_request\nMD1\u91cc\u9762\u7684 process_request\napp01 \u4e2d\u7684 index\u89c6\u56fe\nMD1\u91cc\u9762\u7684 process_response\nMD2\u91cc\u9762\u7684 process_response<\/code><\/pre>\n
\u770b\u7ed3\u679c\u53ef\u77e5\uff1a<\/p>\n
process_response\u65b9\u6cd5\u662f\u5728\u89c6\u56fe\u51fd\u6570\u4e4b\u540e\u6267\u884c\u7684\uff0c\u5e76\u4e14\u987a\u5e8f\u662fMD1\u6bd4MD2\u5148\u6267\u884c\u3002(\u6b64\u65f6settings.py\u4e2d MD2\u6bd4MD1\u5148\u6ce8\u518c)<\/p>\n
\u591a\u4e2a\u4e2d\u95f4\u4ef6\u4e2d\u7684process_response\u65b9\u6cd5\u662f\u6309\u7167MIDDLEWARE\u4e2d\u7684\u6ce8\u518c\u987a\u5e8f\u5012\u5e8f\u6267\u884c\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u7b2c\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u7684process_request\u65b9\u6cd5\u9996\u5148\u6267\u884c\uff0c\u800c\u5b83\u7684process_response\u65b9\u6cd5\u6700\u540e\u6267\u884c\uff0c\u6700\u540e\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u7684process_request\u65b9\u6cd5\u6700\u540e\u4e00\u4e2a\u6267\u884c\uff0c\u5b83\u7684process_response\u65b9\u6cd5\u662f\u6700\u5148\u6267\u884c\u3002<\/p>\n
3\u3001process_view<\/h3>\n
process_view(self, request, view_func, view_args, view_kwargs)<\/p>\n
\u8be5\u65b9\u6cd5\u6709\u56db\u4e2a\u53c2\u6570<\/p>\n
request\u662fHttpRequest\u5bf9\u8c61\u3002<\/p>\n
view_func\u662fDjango\u5373\u5c06\u4f7f\u7528\u7684\u89c6\u56fe\u51fd\u6570\u3002 \uff08\u5b83\u662f\u5b9e\u9645\u7684\u51fd\u6570\u5bf9\u8c61\uff0c\u800c\u4e0d\u662f\u51fd\u6570\u7684\u540d\u79f0\u4f5c\u4e3a\u5b57\u7b26\u4e32\u3002\uff09<\/p>\n
view_args\u662f\u5c06\u4f20\u9012\u7ed9\u89c6\u56fe\u7684\u4f4d\u7f6e\u53c2\u6570\u7684\u5217\u8868.<\/p>\n
view_kwargs\u662f\u5c06\u4f20\u9012\u7ed9\u89c6\u56fe\u7684\u5173\u952e\u5b57\u53c2\u6570\u7684\u5b57\u5178\u3002 view_args\u548cview_kwargs\u90fd\u4e0d\u5305\u542b\u7b2c\u4e00\u4e2a\u89c6\u56fe\u53c2\u6570\uff08request\uff09\u3002<\/p>\n
Django\u4f1a\u5728\u8c03\u7528\u89c6\u56fe\u51fd\u6570\u4e4b\u524d\u8c03\u7528process_view\u65b9\u6cd5\u3002<\/p>\n
\u5b83\u5e94\u8be5\u8fd4\u56deNone\u6216\u4e00\u4e2aHttpResponse\u5bf9\u8c61\u3002 \u5982\u679c\u8fd4\u56deNone\uff0cDjango\u5c06\u7ee7\u7eed\u5904\u7406\u8fd9\u4e2a\u8bf7\u6c42\uff0c\u6267\u884c\u4efb\u4f55\u5176\u4ed6\u4e2d\u95f4\u4ef6\u7684process_view\u65b9\u6cd5\uff0c\u7136\u540e\u5728\u6267\u884c\u76f8\u5e94\u7684\u89c6\u56fe\u3002 \u5982\u679c\u5b83\u8fd4\u56de\u4e00\u4e2aHttpResponse\u5bf9\u8c61\uff0c\u90a3\u4e48\u5c06\u4e0d\u4f1a\u6267\u884cDjango\u7684\u89c6\u56fe\u51fd\u6570\uff0c\u800c\u662f\u76f4\u63a5\u5728\u4e2d\u95f4\u4ef6\u4e2d\u6389\u5934\uff0c\u5012\u53d9\u6267\u884c\u4e00\u4e2a\u4e2aprocess_response\u65b9\u6cd5\uff0c\u6700\u540e\u8fd4\u56de\u7ed9\u6d4f\u89c8\u5668<\/p>\n
\u7ed9MD1\u548cMD2\u6dfb\u52a0process_view\u65b9\u6cd5:<\/p>\n
from django.utils.deprecation import MiddlewareMixin\n\nclass MD1(MiddlewareMixin):\n\n    def process_request(self, request):\n        print("MD1\u91cc\u9762\u7684 process_request")\n\n    def process_response(self, request, response):\n        print("MD1\u91cc\u9762\u7684 process_response")\n        return response\n\n    def process_view(self, request, view_func, view_args, view_kwargs):\n        print("-" * 80)\n        print("MD1 \u4e2d\u7684process_view")\n        print(view_func, view_func.__name__)\n\nclass MD2(MiddlewareMixin):\n    def process_request(self, request):\n        print("MD2\u91cc\u9762\u7684 process_request")\n        pass\n\n    def process_response(self, request, response):\n        print("MD2\u91cc\u9762\u7684 process_response")\n        return response\n\n    def process_view(self, request, view_func, view_args, view_kwargs):\n        print("-" * 80)\n        print("MD2 \u4e2d\u7684process_view")\n        print(view_func, view_func.__name__)<\/code><\/pre>\n
\u8bbf\u95eeindex\u89c6\u56fe\u51fd\u6570\uff0c\u770b\u4e00\u4e0b\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n
MD2\u91cc\u9762\u7684 process_request\nMD1\u91cc\u9762\u7684 process_request\n--------------------------------------------------------------------------------\nMD2 \u4e2d\u7684process_view\n<function index at 0x000001DE68317488> index\n--------------------------------------------------------------------------------\nMD1 \u4e2d\u7684process_view\n<function index at 0x000001DE68317488> index\napp01 \u4e2d\u7684 index\u89c6\u56fe\nMD1\u91cc\u9762\u7684 process_response\nMD2\u91cc\u9762\u7684 process_response<\/code><\/pre>\n
process_view\u65b9\u6cd5\u662f\u5728Django\u8def\u7531\u7cfb\u7edf\u4e4b\u540e\uff0c\u89c6\u56fe\u7cfb\u7edf\u4e4b\u524d\u6267\u884c\u7684\uff0c\u6267\u884c\u987a\u5e8f\u6309\u7167MIDDLEWARE\u4e2d\u7684\u6ce8\u518c\u987a\u5e8f\u4ece\u524d\u5230\u540e\u987a\u5e8f\u6267\u884c\u7684<\/p>\n
4\u3001 process_exception<\/h3>\n
process_exception(self, request, exception)<\/p>\n
\u8be5\u65b9\u6cd5\u4e24\u4e2a\u53c2\u6570:<\/p>\n
\u4e00\u4e2aHttpRequest\u5bf9\u8c61<\/p>\n
\u4e00\u4e2aexception\u662f\u89c6\u56fe\u51fd\u6570\u5f02\u5e38\u4ea7\u751f\u7684Exception\u5bf9\u8c61\u3002<\/p>\n
\u8fd9\u4e2a\u65b9\u6cd5\u53ea\u6709\u5728\u89c6\u56fe\u51fd\u6570\u4e2d\u51fa\u73b0\u5f02\u5e38\u4e86\u624d\u6267\u884c\uff0c\u5b83\u8fd4\u56de\u7684\u503c\u53ef\u4ee5\u662f\u4e00\u4e2aNone\u4e5f\u53ef\u4ee5\u662f\u4e00\u4e2aHttpResponse\u5bf9\u8c61\u3002\u5982\u679c\u662fHttpResponse\u5bf9\u8c61\uff0cDjango\u5c06\u8c03\u7528\u6a21\u677f\u548c\u4e2d\u95f4\u4ef6\u4e2d\u7684process_response\u65b9\u6cd5\uff0c\u5e76\u8fd4\u56de\u7ed9\u6d4f\u89c8\u5668\uff0c\u5426\u5219\u5c06\u9ed8\u8ba4\u5904\u7406\u5f02\u5e38\u3002\u5982\u679c\u8fd4\u56de\u4e00\u4e2aNone\uff0c\u5219\u4ea4\u7ed9\u4e0b\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u7684process_exception\u65b9\u6cd5\u6765\u5904\u7406\u5f02\u5e38\u3002\u5b83\u7684\u6267\u884c\u987a\u5e8f\u4e5f\u662f\u6309\u7167\u4e2d\u95f4\u4ef6\u6ce8\u518c\u987a\u5e8f\u7684\u5012\u5e8f\u6267\u884c\u3002<\/p>\n
\u7ed9MD1\u548cMD2\u6dfb\u52a0\u4e0a\u8fd9\u4e2a\u65b9\u6cd5\uff1a<\/p>\n
from django.utils.deprecation import MiddlewareMixin\n\nclass MD1(MiddlewareMixin):\n\n    def process_request(self, request):\n        print("MD1\u91cc\u9762\u7684 process_request")\n\n    def process_response(self, request, response):\n        print("MD1\u91cc\u9762\u7684 process_response")\n        return response\n\n    def process_view(self, request, view_func, view_args, view_kwargs):\n        print("-" * 80)\n        print("MD1 \u4e2d\u7684process_view")\n        print(view_func, view_func.__name__)\n\n    def process_exception(self, request, exception):\n        print(exception)\n        print("MD1 \u4e2d\u7684process_exception")\n\nclass MD2(MiddlewareMixin):\n    def process_request(self, request):\n        print("MD2\u91cc\u9762\u7684 process_request")\n        pass\n\n    def process_response(self, request, response):\n        print("MD2\u91cc\u9762\u7684 process_response")\n        return response\n\n    def process_view(self, request, view_func, view_args, view_kwargs):\n        print("-" * 80)\n        print("MD2 \u4e2d\u7684process_view")\n        print(view_func, view_func.__name__)\n\n    def process_exception(self, request, exception):\n        print(exception)\n        print("MD2 \u4e2d\u7684process_exception")<\/code><\/pre>\n
\u5982\u679c\u89c6\u56fe\u51fd\u6570\u4e2d\u65e0\u5f02\u5e38\uff0cprocess_exception\u65b9\u6cd5\u4e0d\u6267\u884c\u3002<\/p>\n
\u60f3\u529e\u6cd5\uff0c\u5728\u89c6\u56fe\u51fd\u6570\u4e2d\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38<\/p>\n
def index(request):\n    print("app01 \u4e2d\u7684 index\u89c6\u56fe")\n    raise ValueError("\u5475\u5475")\nreturn HttpResponse("OK")<\/code><\/pre>\n
\u5728MD1\u7684process_exception\u4e2d\u8fd4\u56de\u4e00\u4e2a\u54cd\u5e94\u5bf9\u8c61\uff1a<\/p>\n
class MD1(MiddlewareMixin):\n\n    def process_request(self, request):\n        print("MD1\u91cc\u9762\u7684 process_request")\n\n    def process_response(self, request, response):\n        print("MD1\u91cc\u9762\u7684 process_response")\n        return response\n\n    def process_view(self, request, view_func, view_args, view_kwargs):\n        print("-" * 80)\n        print("MD1 \u4e2d\u7684process_view")\n        print(view_func, view_func.__name__)\n\n    def process_exception(self, request, exception):\n        print(exception)\n        print("MD1 \u4e2d\u7684process_exception")\n        return HttpResponse(str(exception))  # \u8fd4\u56de\u4e00\u4e2a\u54cd\u5e94\u5bf9\u8c61<\/code><\/pre>\n
\u770b\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n
MD2\u91cc\u9762\u7684 process_request\nMD1\u91cc\u9762\u7684 process_request\n--------------------------------------------------------------------------------\nMD2 \u4e2d\u7684process_view\n<function index at 0x0000022C09727488> index\n--------------------------------------------------------------------------------\nMD1 \u4e2d\u7684process_view\n<function index at 0x0000022C09727488> index\napp01 \u4e2d\u7684 index\u89c6\u56fe\n\u5475\u5475\nMD1 \u4e2d\u7684process_exception\nMD1\u91cc\u9762\u7684 process_response\nMD2\u91cc\u9762\u7684 process_response<\/code><\/pre>\n
\u6ce8\u610f\uff0c\u8fd9\u91cc\u5e76\u6ca1\u6709\u6267\u884cMD2\u7684process_exception\u65b9\u6cd5\uff0c\u56e0\u4e3aMD1\u4e2d\u7684process_exception\u65b9\u6cd5\u76f4\u63a5\u8fd4\u56de\u4e86\u4e00\u4e2a\u54cd\u5e94\u5bf9\u8c61\u3002<\/p>\n
5\u3001process_template_response\uff08\u7528\u7684\u6bd4\u8f83\u5c11\uff09<\/h3>\n
process_template_response(self, request, response)<\/p>\n
\u5b83\u7684\u53c2\u6570\uff0c\u4e00\u4e2aHttpRequest\u5bf9\u8c61\uff0cresponse\u662fTemplateResponse\u5bf9\u8c61\uff08\u7531\u89c6\u56fe\u51fd\u6570\u6216\u8005\u4e2d\u95f4\u4ef6\u4ea7\u751f\uff09\u3002<\/p>\n
process_template_response\u662f\u5728\u89c6\u56fe\u51fd\u6570\u6267\u884c\u5b8c\u6210\u540e\u7acb\u5373\u6267\u884c\uff0c\u4f46\u662f\u5b83\u6709\u4e00\u4e2a\u524d\u63d0\u6761\u4ef6\uff0c\u90a3\u5c31\u662f\u89c6\u56fe\u51fd\u6570\u8fd4\u56de\u7684\u5bf9\u8c61\u6709\u4e00\u4e2arender()\u65b9\u6cd5\uff08\u6216\u8005\u8868\u660e\u8be5\u5bf9\u8c61\u662f\u4e00\u4e2aTemplateResponse\u5bf9\u8c61\u6216\u7b49\u4ef7\u65b9\u6cd5\uff09\u3002<\/p>\n
class MD1(MiddlewareMixin):\n\n    def process_request(self, request):\n        print("MD1\u91cc\u9762\u7684 process_request")\n\n    def process_response(self, request, response):\n        print("MD1\u91cc\u9762\u7684 process_response")\n        return response\n\n    def process_view(self, request, view_func, view_args, view_kwargs):\n        print("-" * 80)\n        print("MD1 \u4e2d\u7684process_view")\n        print(view_func, view_func.__name__)\n\n    def process_exception(self, request, exception):\n        print(exception)\n        print("MD1 \u4e2d\u7684process_exception")\n        return HttpResponse(str(exception))\n\n    def process_template_response(self, request, response):\n        print("MD1 \u4e2d\u7684process_template_response")\n        return response\n\nclass MD2(MiddlewareMixin):\n    def process_request(self, request):\n        print("MD2\u91cc\u9762\u7684 process_request")\n        pass\n\n    def process_response(self, request, response):\n        print("MD2\u91cc\u9762\u7684 process_response")\n        return response\n\n    def process_view(self, request, view_func, view_args, view_kwargs):\n        print("-" * 80)\n        print("MD2 \u4e2d\u7684process_view")\n        print(view_func, view_func.__name__)\n\n    def process_exception(self, request, exception):\n        print(exception)\n        print("MD2 \u4e2d\u7684process_exception")\n\n    def process_template_response(self, request, response):\n        print("MD2 \u4e2d\u7684process_template_response")\n        return response<\/code><\/pre>\n
views.py\u4e2d\uff1a<\/p>\n
def index(request):\n    print("app01 \u4e2d\u7684 index\u89c6\u56fe")\n\n    def render():\n        print("in index\/render")\n        return HttpResponse("O98K")\n    rep = HttpResponse("OK")\n    rep.render = render\nreturn rep<\/code><\/pre>\n
\u8bbf\u95eeindex\u89c6\u56fe\uff0c\u7ec8\u7aef\u8f93\u51fa\u7684\u7ed3\u679c<\/p>\n
MD2\u91cc\u9762\u7684 process_request\nMD1\u91cc\u9762\u7684 process_request\n--------------------------------------------------------------------------------\nMD2 \u4e2d\u7684process_view\n<function index at 0x000001C111B97488> index\n--------------------------------------------------------------------------------\nMD1 \u4e2d\u7684process_view\n<function index at 0x000001C111B97488> index\napp01 \u4e2d\u7684 index\u89c6\u56fe\nMD1 \u4e2d\u7684process_template_response\nMD2 \u4e2d\u7684process_template_response\nin index\/render\nMD1\u91cc\u9762\u7684 process_response\nMD2\u91cc\u9762\u7684 process_response<\/code><\/pre>\n
\u4ece\u7ed3\u679c\u770b\u51fa\uff1a<\/p>\n
\u89c6\u56fe\u51fd\u6570\u6267\u884c\u5b8c\u4e4b\u540e\uff0c\u7acb\u5373\u6267\u884c\u4e86\u4e2d\u95f4\u4ef6\u7684process_template_response\u65b9\u6cd5\uff0c\u987a\u5e8f\u662f\u5012\u5e8f\uff0c\u5148\u6267\u884cMD1\u7684\uff0c\u5728\u6267\u884cMD2\u7684\uff0c\u63a5\u7740\u6267\u884c\u4e86\u89c6\u56fe\u51fd\u6570\u8fd4\u56de\u7684HttpResponse\u5bf9\u8c61\u7684render\u65b9\u6cd5\uff0c\u8fd4\u56de\u4e86\u4e00\u4e2a\u65b0\u7684HttpResponse\u5bf9\u8c61\uff0c\u63a5\u7740\u6267\u884c\u4e2d\u95f4\u4ef6\u7684process_response\u65b9\u6cd5\u3002<\/p>\n
\u4e09\u3001\u4e2d\u95f4\u4ef6\u7684\u6267\u884c\u6d41\u7a0b<\/h2>\n
\u4e0a\u4e00\u90e8\u5206\uff0c\u6211\u4eec\u4e86\u89e3\u4e86\u4e2d\u95f4\u4ef6\u4e2d\u76845\u4e2a\u65b9\u6cd5\uff0c\u5b83\u4eec\u7684\u53c2\u6570\u3001\u8fd4\u56de\u503c\u4ee5\u53ca\u4ec0\u4e48\u65f6\u5019\u6267\u884c\uff0c\u73b0\u5728\u603b\u7ed3\u4e00\u4e0b\u4e2d\u95f4\u4ef6\u7684\u6267\u884c\u6d41\u7a0b\u3002<\/p>\n
\u8bf7\u6c42\u5230\u8fbe\u4e2d\u95f4\u4ef6\u4e4b\u540e\uff0c\u5148\u6309\u7167\u6b63\u5e8f\u6267\u884c\u6bcf\u4e2a\u6ce8\u518c\u4e2d\u95f4\u4ef6\u7684process_request\u65b9\u6cd5\uff0cprocess_request\u65b9\u6cd5\u8fd4\u56de\u7684\u503c\u662fNone\uff0c\u5c31\u4f9d\u6b21\u6267\u884c\uff0c\u5982\u679c\u8fd4\u56de\u7684\u503c\u662fHttpResponse\u5bf9\u8c61\uff0c\u4e0d\u518d\u6267\u884c\u540e\u9762\u7684process_request\u65b9\u6cd5\uff0c\u800c\u662f\u6267\u884c\u5f53\u524d\u5bf9\u5e94\u4e2d\u95f4\u4ef6\u7684process_response\u65b9\u6cd5(\u6ce8\u610f\u4e0d\u662f\u6389\u5934\u6267\u884c\u6240\u6709\u7684process_response\u65b9\u6cd5)\uff0c\u5c06HttpResponse\u5bf9\u8c61\u8fd4\u56de\u7ed9\u6d4f\u89c8\u5668\u3002\u4e5f\u5c31\u662f\u8bf4\uff1a\u5982\u679cMIDDLEWARE\u4e2d\u6ce8\u518c\u4e866\u4e2a\u4e2d\u95f4\u4ef6\uff0c\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u7b2c3\u4e2a\u4e2d\u95f4\u4ef6\u8fd4\u56de\u4e86\u4e00\u4e2aHttpResponse\u5bf9\u8c61\uff0c\u90a3\u4e48\u7b2c4,5,6\u4e2d\u95f4\u4ef6\u7684process_request\u548cprocess_response\u65b9\u6cd5\u90fd\u4e0d\u6267\u884c\uff0c\u987a\u5e8f\u6267\u884c3,2,1\u4e2d\u95f4\u4ef6\u7684process_response\u65b9\u6cd5\u3002<\/p>\n
\"\"<\/div><\/p>\n
process_request\u65b9\u6cd5\u90fd\u6267\u884c\u5b8c\u540e\uff0c\u5339\u914d\u8def\u7531\uff0c\u627e\u5230\u8981\u6267\u884c\u7684\u89c6\u56fe\u51fd\u6570\uff0c\u5148\u4e0d\u6267\u884c\u89c6\u56fe\u51fd\u6570\uff0c\u5148\u6267\u884c\u4e2d\u95f4\u4ef6\u4e2d\u7684process_view\u65b9\u6cd5\uff0cprocess_view\u65b9\u6cd5\u8fd4\u56deNone\uff0c\u7ee7\u7eed\u6309\u987a\u5e8f\u6267\u884c\uff0c\u6240\u6709process_view\u65b9\u6cd5\u6267\u884c\u5b8c\u540e\u6267\u884c\u89c6\u56fe\u51fd\u6570\u3002\u5047\u5982\u4e2d\u95f4\u4ef63 \u7684process_view\u65b9\u6cd5\u8fd4\u56de\u4e86HttpResponse\u5bf9\u8c61\uff0c\u52194,5,6\u7684process_view\u4ee5\u53ca\u89c6\u56fe\u51fd\u6570\u90fd\u4e0d\u6267\u884c\uff0c\u76f4\u63a5\u4ece\u6700\u540e\u4e00\u4e2a\u4e2d\u95f4\u4ef6\uff0c\u4e5f\u5c31\u662f\u4e2d\u95f4\u4ef66\u7684process_response\u65b9\u6cd5\u5f00\u59cb\u5012\u5e8f\u6267\u884c\u3002<\/p>\n
\"\"<\/div><\/p>\n
process_template_response\u548cprocess_exception\u4e24\u4e2a\u65b9\u6cd5\u7684\u89e6\u53d1\u662f\u6709\u6761\u4ef6\u7684\uff0c\u6267\u884c\u987a\u5e8f\u4e5f\u662f\u5012\u5e8f\u3002\u603b\u7ed3\u6240\u6709\u7684\u6267\u884c\u6d41\u7a0b\u5982\u4e0b<\/p>\n
\"\"<\/div>
\n
\"\"<\/div><\/p>\n
\u56db\u3001\u4e2d\u95f4\u4ef6\u7248\u767b\u5f55\u9a8c\u8bc1<\/h2>\n
\u4e2d\u95f4\u4ef6\u7248\u7684\u767b\u5f55\u9a8c\u8bc1\u9700\u8981\u4f9d\u9760session\uff0c\u6240\u4ee5\u6570\u636e\u5e93\u4e2d\u8981\u6709django_session\u8868\u3002<\/p>\n
urls.py<\/p>\n
from app02 import views as v2\nurlpatterns = [\n    url(r'^admin\/', admin.site.urls),\n    url(r'^login\/',v2.login),\n    url(r'^home\/',v2.home),\n    url(r'^index\/',v2.index)\n]<\/code><\/pre>\n
views.py<\/p>\n
from django.shortcuts import render,redirect,HttpResponse\nfrom app02 import models\n# Create your views here.\ndef login(request):\n    error_msg=''\n    if request.method=='POST':\n        username=request.POST.get('username')\n        password=request.POST.get('password')\n        user_obj=models.User.objects.filter(username=username,password=password)\n        if  user_obj:\n            #\u8bbe\u7f6esession\n            request.session['login']='ok'\n            #\u83b7\u53d6\u7528\u6237\u60f3\u76f4\u63a5\u8bbf\u95ee\u7684URL\n            url=request.GET.get('next')\n            #\u5982\u679c\u6709\uff0c\u5c31\u8df3\u8f6c\u5230\u5ba2\u6237\u521d\u59cb\u60f3\u8bbf\u95ee\u7684URL\n            if not url:\n                #\u6ca1\u6709\u5219\u9ed8\u8ba4\u8df3\u8f6c\u5230home\u9875\u9762\n                url='\/home\/'\n            return redirect(url)\n        else:\n            error_msg='username or password error!'\n    return render(request,'login.html',{'error_msg':error_msg})\n\ndef home(request):\n    return HttpResponse('<h1>\u8fd9\u662fhome\u9875\u9762 \u53ea\u6709\u767b\u5f55\u4e86\u624d\u80fd\u770b\u5230<\/h1>')\n\ndef index(request):\nreturn HttpResponse('<h1>\u8fd9\u662findex\u9875\u9762 \u4e5f\u53ea\u6709\u767b\u5f55\u4e86\u624d\u80fd\u770b\u5230<h1>')<\/code><\/pre>\n
login.html<\/p>\n
<!DOCTYPE html>\n<html lang="en">\n<head>\n    <meta charset="UTF-8">\n    <title>\u767b\u9646\u9875\u9762<\/title>\n    <meta name="viewport" content="width=device-width, initial-scale=1">\n<\/head>\n<body>\n<form action="" method="post">\n    {% csrf_token %}\n    <label for="">username:<input type="text" name="username"><\/label>\n    <label for="">password:<input type="password" name="password"><\/label>\n    <input type="submit" value="submit">\n<\/form>\n<h1 style="color: red">{{ error_msg }}<\/h1>\n\n<\/body>\n<\/html><\/code><\/pre>\n
middlewares.py<\/p>\n
from django.utils.deprecation import MiddlewareMixin\nfrom django.shortcuts import redirect\n\nclass Check_Login(MiddlewareMixin):\n    def process_request(self,request):\n        next_url=request.path_info\n        if not next_url.startswith('\/login\/'):\n            is_login=request.session.get('login','')\n            if not is_login:\n                return redirect('\/login\/?next={}'.format(next_url))<\/code><\/pre>\n
\u5728settings.py\u4e2d\u6ce8\u518c<\/p>\n
MIDDLEWARE = [\n    'django.middleware.security.SecurityMiddleware',\n    'django.contrib.sessions.middleware.SessionMiddleware',\n    'django.middleware.common.CommonMiddleware',\n    'django.middleware.csrf.CsrfViewMiddleware',\n    'django.contrib.auth.middleware.AuthenticationMiddleware',\n    'django.contrib.messages.middleware.MessageMiddleware',\n    'django.middleware.clickjacking.XFrameOptionsMiddleware',\n    'middleware.my_middleware.Check_Login',\n\n]<\/code><\/pre>\n
\u9644\uff1aDjango\u8bf7\u6c42\u6d41\u7a0b\u56fe<\/p>\n
\"\"<\/div> <\/p>\n","protected":false},"excerpt":{"rendered":"
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