{"id":1343,"date":"2025-02-19T16:30:53","date_gmt":"2025-02-19T08:30:53","guid":{"rendered":"http:\/\/www.chan.ink\/?p=1343"},"modified":"2025-02-19T16:30:56","modified_gmt":"2025-02-19T08:30:56","slug":"%e3%80%90django%e7%9a%84%e4%b8%ad%e9%97%b4%e4%bb%b6%e3%80%91response-response-or-self-get_responserequest","status":"publish","type":"post","link":"http:\/\/www.chan.ink\/index.php\/2025\/02\/19\/%e3%80%90django%e7%9a%84%e4%b8%ad%e9%97%b4%e4%bb%b6%e3%80%91response-response-or-self-get_responserequest\/","title":{"rendered":"\u3010Django\u7684\u4e2d\u95f4\u4ef6\u3011response = response or self.get_response(request)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u8fd9\u4e2a\u95ee\u9898\u975e\u5e38\u597d\uff01<code>response = response or self.get_response(request)<\/code> \u8fd9\u884c\u4ee3\u7801\u662f Django \u4e2d\u95f4\u4ef6\u4e2d\u975e\u5e38\u5173\u952e\u7684\u4e00\u90e8\u5206\uff0c\u5b83\u7684\u4f5c\u7528\u662f\u51b3\u5b9a\u662f\u5426\u7ee7\u7eed\u5c06\u8bf7\u6c42\u4f20\u9012\u7ed9\u4e0b\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u6216\u89c6\u56fe\u51fd\u6570\u3002\u4e0b\u9762\u6211\u4f1a\u8be6\u7ec6\u89e3\u91ca\u8fd9\u884c\u4ee3\u7801\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u4ee5\u53ca\u4e3a\u4ec0\u4e48\u5b83\u4f1a\u6267\u884c\u89c6\u56fe\u51fd\u6570\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>\u4ee3\u7801\u7684\u4f5c\u7528<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>response = response or self.get_response(request)<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u884c\u4ee3\u7801\u7684\u903b\u8f91\u662f\uff1a<\/li>\n\n\n\n<li>\u5982\u679c <code>response<\/code> \u662f <code>None<\/code>\uff08\u5373\u524d\u9762\u7684 <code>process_request<\/code> \u6ca1\u6709\u8fd4\u56de\u54cd\u5e94\uff09\uff0c\u5219\u8c03\u7528 <code>self.get_response(request)<\/code>\u3002<\/li>\n\n\n\n<li>\u5982\u679c <code>response<\/code> \u4e0d\u662f <code>None<\/code>\uff08\u5373\u524d\u9762\u7684 <code>process_request<\/code> \u8fd4\u56de\u4e86\u54cd\u5e94\uff09\uff0c\u5219\u76f4\u63a5\u4f7f\u7528 <code>response<\/code>\uff0c\u4e0d\u518d\u8c03\u7528 <code>self.get_response(request)<\/code>\u3002<\/li>\n\n\n\n<li>\u6362\u53e5\u8bdd\u8bf4\uff1a<\/li>\n\n\n\n<li>\u5982\u679c\u67d0\u4e2a\u4e2d\u95f4\u4ef6\u7684 <code>process_request<\/code> \u8fd4\u56de\u4e86\u54cd\u5e94\uff0c\u5219\u76f4\u63a5\u8df3\u8fc7\u540e\u7eed\u4e2d\u95f4\u4ef6\u548c\u89c6\u56fe\u51fd\u6570\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u6240\u6709\u4e2d\u95f4\u4ef6\u7684 <code>process_request<\/code> \u90fd\u6ca1\u6709\u8fd4\u56de\u54cd\u5e94\uff0c\u5219\u8c03\u7528 <code>self.get_response(request)<\/code> \u7ee7\u7eed\u5904\u7406\u8bf7\u6c42\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong><code>self.get_response(request)<\/code> \u7684\u4f5c\u7528<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>self.get_response(request)<\/code> \u662f Django \u4e2d\u95f4\u4ef6\u94fe\u4e2d\u7684\u6838\u5fc3\u65b9\u6cd5\uff0c\u5b83\u7684\u4f5c\u7528\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c06\u8bf7\u6c42\u4f20\u9012\u7ed9\u4e0b\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u5f53\u524d\u4e2d\u95f4\u4ef6\u662f\u6700\u540e\u4e00\u4e2a\u4e2d\u95f4\u4ef6\uff0c\u5219\u5c06\u8bf7\u6c42\u4f20\u9012\u7ed9\u89c6\u56fe\u51fd\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e2d\u95f4\u4ef6\u94fe\u7684\u6267\u884c\u987a\u5e8f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe\u6709\u4ee5\u4e0b\u4e2d\u95f4\u4ef6\u914d\u7f6e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MIDDLEWARE = &#91;\n    'middleware1',\n    'middleware2',\n    'middleware3',\n]<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u8bf7\u6c42\u5230\u8fbe\u65f6\uff0cDjango \u4f1a\u6309\u7167\u4ee5\u4e0b\u987a\u5e8f\u8c03\u7528\u4e2d\u95f4\u4ef6\uff1a<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8c03\u7528 <code>middleware1<\/code> \u7684 <code>process_request<\/code>\u3002<\/li>\n\n\n\n<li>\u8c03\u7528 <code>middleware2<\/code> \u7684 <code>process_request<\/code>\u3002<\/li>\n\n\n\n<li>\u8c03\u7528 <code>middleware3<\/code> \u7684 <code>process_request<\/code>\u3002<\/li>\n\n\n\n<li>\u8c03\u7528\u89c6\u56fe\u51fd\u6570\u3002<\/li>\n\n\n\n<li>\u8c03\u7528 <code>middleware3<\/code> \u7684 <code>process_response<\/code>\u3002<\/li>\n\n\n\n<li>\u8c03\u7528 <code>middleware2<\/code> \u7684 <code>process_response<\/code>\u3002<\/li>\n\n\n\n<li>\u8c03\u7528 <code>middleware1<\/code> \u7684 <code>process_response<\/code>\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>self.get_response(request)<\/code> \u7684\u4f5c\u7528\u5c31\u662f\u5c06\u8bf7\u6c42\u4f20\u9012\u7ed9\u4e0b\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u6216\u89c6\u56fe\u51fd\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>\u4e3a\u4ec0\u4e48 <code>self.get_response(request)<\/code> \u4f1a\u6267\u884c\u89c6\u56fe\u51fd\u6570\uff1f<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 Django \u7684\u4e2d\u95f4\u4ef6\u94fe\u4e2d\uff0c<code>self.get_response(request)<\/code> \u662f\u4e00\u4e2a\u95ed\u5305\uff08closure\uff09\uff0c\u5b83\u5c01\u88c5\u4e86\u540e\u7eed\u4e2d\u95f4\u4ef6\u548c\u89c6\u56fe\u51fd\u6570\u7684\u8c03\u7528\u903b\u8f91\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53 <code>self.get_response(request)<\/code> \u88ab\u8c03\u7528\u65f6\uff0cDjango \u4f1a\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5982\u679c\u5f53\u524d\u4e2d\u95f4\u4ef6\u4e0d\u662f\u6700\u540e\u4e00\u4e2a\u4e2d\u95f4\u4ef6\uff0c\u5219\u8c03\u7528\u4e0b\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u7684 <code>__call__<\/code> \u65b9\u6cd5\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u5f53\u524d\u4e2d\u95f4\u4ef6\u662f\u6700\u540e\u4e00\u4e2a\u4e2d\u95f4\u4ef6\uff0c\u5219\u8c03\u7528\u89c6\u56fe\u51fd\u6570\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u4e2d\u95f4\u4ef6\u94fe\u7684\u8c03\u7528\u903b\u8f91<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe\u6211\u4eec\u6709\u4ee5\u4e0b\u4e2d\u95f4\u4ef6\u548c\u89c6\u56fe\u51fd\u6570\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u4e2d\u95f4\u4ef61\nclass Middleware1:\n    def __init__(self, get_response):\n        self.get_response = get_response\n\n    def __call__(self, request):\n        print(\"Middleware1: \u5904\u7406\u8bf7\u6c42\u524d\")\n        response = self.get_response(request)\n        print(\"Middleware1: \u5904\u7406\u54cd\u5e94\u540e\")\n        return response\n\n# \u4e2d\u95f4\u4ef62\nclass Middleware2:\n    def __init__(self, get_response):\n        self.get_response = get_response\n\n    def __call__(self, request):\n        print(\"Middleware2: \u5904\u7406\u8bf7\u6c42\u524d\")\n        response = self.get_response(request)\n        print(\"Middleware2: \u5904\u7406\u54cd\u5e94\u540e\")\n        return response\n\n# \u89c6\u56fe\u51fd\u6570\ndef my_view(request):\n    print(\"\u89c6\u56fe\u51fd\u6570\u88ab\u8c03\u7528\")\n    return HttpResponse(\"Hello, World!\")<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u8bf7\u6c42\u5230\u8fbe\u65f6\uff0cDjango \u4f1a\u6309\u7167\u4ee5\u4e0b\u987a\u5e8f\u8c03\u7528\uff1a<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><code>Middleware1<\/code> \u7684 <code>__call__<\/code> \u65b9\u6cd5\u3002<\/li>\n\n\n\n<li><code>Middleware2<\/code> \u7684 <code>__call__<\/code> \u65b9\u6cd5\u3002<\/li>\n\n\n\n<li>\u89c6\u56fe\u51fd\u6570 <code>my_view<\/code>\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728 <code>Middleware1<\/code> \u4e2d\uff0c<code>self.get_response(request)<\/code> \u4f1a\u8c03\u7528 <code>Middleware2<\/code> \u7684 <code>__call__<\/code> \u65b9\u6cd5\u3002<\/li>\n\n\n\n<li>\u5728 <code>Middleware2<\/code> \u4e2d\uff0c<code>self.get_response(request)<\/code> \u4f1a\u8c03\u7528\u89c6\u56fe\u51fd\u6570 <code>my_view<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong><code>response = response or self.get_response(request)<\/code> \u7684\u8be6\u7ec6\u903b\u8f91<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8ba9\u6211\u4eec\u518d\u56de\u5230\u8fd9\u884c\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>response = response or self.get_response(request)<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c <code>response<\/code> \u662f <code>None<\/code>\uff0c\u5219\u8c03\u7528 <code>self.get_response(request)<\/code>\u3002<\/li>\n\n\n\n<li><code>self.get_response(request)<\/code> \u4f1a\u5c06\u8bf7\u6c42\u4f20\u9012\u7ed9\u4e0b\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u6216\u89c6\u56fe\u51fd\u6570\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u5f53\u524d\u4e2d\u95f4\u4ef6\u662f\u6700\u540e\u4e00\u4e2a\u4e2d\u95f4\u4ef6\uff0c\u5219 <code>self.get_response(request)<\/code> \u4f1a\u8c03\u7528\u89c6\u56fe\u51fd\u6570\u3002<\/li>\n\n\n\n<li>\u5982\u679c <code>response<\/code> \u4e0d\u662f <code>None<\/code>\uff0c\u5219\u76f4\u63a5\u4f7f\u7528 <code>response<\/code>\uff0c\u4e0d\u518d\u8c03\u7528 <code>self.get_response(request)<\/code>\u3002<\/li>\n\n\n\n<li>\u8fd9\u610f\u5473\u7740\u67d0\u4e2a\u4e2d\u95f4\u4ef6\u7684 <code>process_request<\/code> \u5df2\u7ecf\u8fd4\u56de\u4e86\u54cd\u5e94\uff0c\u540e\u7eed\u4e2d\u95f4\u4ef6\u548c\u89c6\u56fe\u51fd\u6570\u4f1a\u88ab\u8df3\u8fc7\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5. <strong>\u603b\u7ed3<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>response = response or self.get_response(request)<\/code> \u7684\u4f5c\u7528\u662f\u51b3\u5b9a\u662f\u5426\u7ee7\u7eed\u5c06\u8bf7\u6c42\u4f20\u9012\u7ed9\u4e0b\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u6216\u89c6\u56fe\u51fd\u6570\u3002<\/li>\n\n\n\n<li><code>self.get_response(request)<\/code> \u662f\u4e00\u4e2a\u95ed\u5305\uff0c\u5c01\u88c5\u4e86\u540e\u7eed\u4e2d\u95f4\u4ef6\u548c\u89c6\u56fe\u51fd\u6570\u7684\u8c03\u7528\u903b\u8f91\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u6240\u6709\u4e2d\u95f4\u4ef6\u7684 <code>process_request<\/code> \u90fd\u6ca1\u6709\u8fd4\u56de\u54cd\u5e94\uff0c\u5219 <code>self.get_response(request)<\/code> \u4f1a\u8c03\u7528\u89c6\u56fe\u51fd\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e0c\u671b\u8fd9\u4e2a\u89e3\u91ca\u80fd\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3\u8fd9\u884c\u4ee3\u7801\u7684\u5de5\u4f5c\u539f\u7406\uff01\u5982\u679c\u8fd8\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u7ee7\u7eed\u63d0\u95ee\uff01 ?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u4e2a\u95ee\u9898\u975e\u5e38\u597d\uff01response = response or self.get_response(reques [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1343","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/1343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/comments?post=1343"}],"version-history":[{"count":1,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/1343\/revisions"}],"predecessor-version":[{"id":1344,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/1343\/revisions\/1344"}],"wp:attachment":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/media?parent=1343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/categories?post=1343"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/tags?post=1343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}