{"id":15403,"date":"2024-11-17T20:54:51","date_gmt":"2024-11-17T12:54:51","guid":{"rendered":"https:\/\/fwq.ai\/blog\/?p=15403"},"modified":"2024-11-17T20:54:51","modified_gmt":"2024-11-17T12:54:51","slug":"openresty%e4%b8%ad%e7%9a%84ngx-location-capture%e5%92%8cngx-location-capture_multi%e7%9a%84%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/15403\/","title":{"rendered":"openResty\u4e2d\u7684ngx.location.capture\u548cngx.location.capture_multi\u7684\u4f7f\u7528"},"content":{"rendered":"<header class=\"entry-header\">\n<h1 class=\"entry-title\">openResty\u4e2d\u7684ngx.location.capture\u548cngx.location.capture_multi\u7684\u4f7f\u7528<\/h1>\n<\/header>\n<div class=\"entry-content\">\n<p>\u5728openResty\u4e2d\uff0cngx.location.capture_multi\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u529f\u80fd\u3002\u53ef\u4ee5\u5e94\u7528\u4e8e\u5e76\u53d1\u591a\u4e2a\u76f8\u4e92\u4e4b\u95f4\u6ca1\u6709\u4f9d\u8d56\u7684\u8bf7\u6c42\u3002\u5728\u73b0\u4ee3\u7684\u5e94\u7528\u67b6\u6784\u4e2d\u7ecf\u5e38\u4f7f\u7528\u5fae\u670d\u52a1\uff0c\u63d0\u4f9b\u4f4e\u7c92\u5ea6\u7684\u63a5\u53e3\uff1b\u4f46\u5728\u5ba2\u6237\u7aef\uff08\u4f8b\u5982\uff1aapp\u3001\u7f51\u9875\u670d\u52a1\uff09\u7ecf\u5e38\u9700\u8981\u8bf7\u6c42\u591a\u4e2a\u5fae\u670d\u52a1\u63a5\u53e3\uff0c\u624d\u80fd\u5b8c\u6574\u663e\u793a\u9875\u9762\u5185\u5bb9\u3002<\/p>\n<p>\u4f8b\u5982\uff1a\u6253\u5f00\u4e00\u4e2a\u5546\u54c1\u8be6\u60c5\u9875\uff0c\u9700\u8981\u8bf7\u6c42\uff1a<\/p>\n<ol>\n<li>banner\u5e7f\u544a\u63a5\u53e3\uff1b<\/li>\n<li>\u5546\u54c1\u8be6\u60c5\uff1b<\/li>\n<li>\u5546\u54c1\u8bc4\u8bba\u7b49\u3002<\/li>\n<\/ol>\n<p>\u90a3\u4e48ngx.location.capture_multi\u5c31\u6d3e\u4e0a\u5927\u7528\u573a\u4e86\uff0c\u5f53\u7136\u4f7f\u7528ngx.location.capture_multi\u4e0d\u662f\u552f\u4e00\u7684\u529e\u6cd5\uff0c\u5475\u5475\uff5e\u3002\u4e0b\u9762\u5c31\u6765\u770b\u770b\u8fd9\u4e2a\u4e1c\u4e1c\u7684\u7528\u6cd5\uff1b<\/p>\n<p>&nbsp;<\/p>\n<p>\u5148\u4ecb\u7ecd\u4e00\u4e0b\u4e0b\u9762\u8fd9\u51e0\u4e2a\u5e94\u7528\u4e4b\u95f4\u7684\u5dee\u522b\uff1b<\/p>\n<ol>\n<li>ngx.exec\uff1anginx\u8df3\u8f6c\uff1b\u8df3\u8f6c\u5230\u5176\u4ed6\u7684location\u4e2d\u6267\u884c\u3002\u4f46\u4ec5\u9650nginx\u5185\u90e8\u7684location\u3002<\/li>\n<li>ngx.redirect\uff1a\u548cnginx.exec\u76f8\u4f3c\uff0c\u4f46\u652f\u6301\u5916\u90e8\u8df3\u8f6c\u3002<\/li>\n<li>ngx.location.capture_multi\uff1a\u5e76\u53d1\u8bf7\u6c42\uff1b\u4f46\u4ec5\u9650nginx\u5185\u90e8\u7684location\u3002<\/li>\n<li>http\u5305\u4e2dmulti\u65b9\u6cd5\uff1a\u6982\u5ff5\u4e0a\u4e0engx.location.capture_multi\u76f8\u4f3c\uff0c\u4f46\u652f\u6301\u5916\u90e8\u63a5\u53e3\u3002<\/li>\n<\/ol>\n<h1>\u4e00\u3001ngx.location.capture<\/h1>\n<p><strong>\u8bed\u6cd5:<\/strong>\u00a0<em>res = ngx.location.capture(uri, options?)<\/em><strong><br \/>\n\u4f5c\u7528\u57df:<\/strong>\u00a0<em>rewrite_by_lua*, access_by_lua*, content_by_lua*<\/em><\/p>\n<h3><strong>1.1 uri<\/strong><\/h3>\n<p>\u76f4\u63a5\u770b\u6817\u5b50\uff1a<\/p>\n<pre>location ~ \/comment\/([0-9]+) {\r\n    internal;\r\n    set $goodsId $1;\r\n    content_by_lua_block{\r\n        local args = ngx.req.get_uri_args()\r\n        ngx.say(\"comments for goodsId :\", ngx.var.goodsId)\r\n        ngx.say(\"comments for goods:\", args.offset)\r\n    }\r\n}\r\nlocation ~ \/goods\/detail\/([0-9]+) {\r\n    set $goodsId $1;\r\n    default_type  plain\/text;\r\n    content_by_lua_block{\r\n        local res = ngx.location.capture(\"\/comment\/\"..ngx.var.goodsId..\"?offset=0\")\r\n        ngx.say(res.status)\r\n        ngx.say(res.body)\r\n    }\r\n}<\/pre>\n<p>\u8fd4\u56de\u7ed3\u679c\uff1a<\/p>\n<pre>200\r\ncomments for goodsId :123123\r\ncomments for goods:0<\/pre>\n<h3>1.2\u00a0<em>options<\/em><\/h3>\n<pre>method:  \u8bf7\u6c42\u65b9\u6cd5\uff0c\u9ed8\u8ba4\u4e3angx.HTTP_GET\r\nbody: \u8bf7\u6c42\u5185\u5bb9,\u4ec5\u9650\u4e8estring \u6216 nil\r\nargs: \u8bf7\u6c42\u53c2\u6570,\u652f\u6301string \u6216 table\r\nvars: \u53d8\u91cf,\u4ec5\u9650\u4e8etable\r\nctx: \u53ef\u53c2\u8003\u4e2dngx.ctx\u7684\u7528\u6cd5\uff1a <a title=\"openResty\u4e2dngx_lua\u6a21\u5757\u63d0\u4f9b\u7684API\" href=\"http:\/\/www.hangdaowangluo.com\/archives\/2694\" target=\"_blank\" rel=\"noopener\">openResty\u4e2dngx_lua\u6a21\u5757\u63d0\u4f9b\u7684API<\/a>\r\ncopy_all_vars: \u590d\u5236\u53d8\u91cf\r\nshare_all_vars: \u5171\u4eab\u53d8\u91cf\r\nalways_forward_body: \u5f53\u8bbe\u7f6e\u4e3atrue\u65f6,\u7236\u8bf7\u6c42\u4e2d\u7684body\u8f6c\u53d1\u5230\u5b50\u8bf7\u6c42\u3002\r\n\u9ed8\u8ba4\u662ffalse,\u4ec5\u8f6c\u53d1put\u548cpost\u8bf7\u6c42\u65b9\u5f0f\u4e2d\u7684body\u3002\u5982\u679c\u8bbe\u7f6ebody\u9009\u9879\uff0c\u5219\u8be5\u8bbe\u7f6e\u5931\u6548\u3002<\/pre>\n<p><strong>1.2.1 always_forward_body<\/strong><\/p>\n<p>\u8bf7\u770b\u6817\u5b50\uff1a<\/p>\n<pre><strong>\u6817\u5b50 01:<\/strong>\r\n\r\nlocation ~ \/comment\/([0-9]+) {\r\n    internal;\r\n    set $goodsId $1;\r\n    content_by_lua_block{\r\n        ngx.req.read_body();\r\n        local args = ngx.req.get_uri_args()\r\n        local data = ngx.req.get_body_data()\r\n        ngx.say(\"comments for goodsId :\", ngx.var.goodsId)\r\n        ngx.say(\"comments for rank:\", args.rank)\r\n        ngx.say(\"comments for data :\", data)\r\n    }\r\n}\r\nlocation ~ \/goods\/detail\/([0-9]+) {\r\n    set $goodsId $1;\r\n    default_type  plain\/text;\r\n    content_by_lua_block{\r\n        ngx.req.read_body();\r\n        local res = ngx.location.capture(\"\/comment\/\"..ngx.var.goodsId..\"?rank=5\",{\r\n            method = ngx.HTTP_GET,\r\n            always_forward_body = false,\r\n        })\r\n        ngx.say(res.status)\r\n        ngx.say(res.body)\r\n    }\r\n}<\/pre>\n<p>\u8bf7\u6c42raw: uid=37A059714A2B4B4280794DCA5C150DF0\uff0c\u8bf7\u770b\u5982\u4e0b\u8f93\u51fa<\/p>\n<pre>200\r\ncomments for goodsId :123123\r\ncomments for rank:5\r\ncomments for data :nil<\/pre>\n<p>\u5c06\u00a0<strong>\u6817\u5b50 01\u00a0<\/strong>\u4e2d\u7684\uff1amethod = ngx.HTTP_GET \uff0c\u66f4\u6539\u6210 method = ngx.HTTP_PUT\u6216 method = ngx.HTTP_POST\uff0c\u8bf7\u770b\u5982\u4e0b\u8f93\u51fa\uff1a<\/p>\n<pre>200\r\ncomments for goodsId :123123\r\ncomments for rank:5\r\ncomments for data :uid=37A059714A2B4B4280794DCA5C150DF0<\/pre>\n<p>\u91cd\u65b0\u5c06\u00a0<strong>\u6817\u5b50 01<\/strong>\u00a0\u4e2d\u7684 always_forward_body = false \u66f4\u6539\u6210 always_forward_body = true,\u5176\u4ed6\u4e0d\u53d8\uff0c\u8bf7\u770b\u5982\u4e0b\u8f93\u51fa\uff1a<\/p>\n<pre>200\r\ncomments for goodsId :123123\r\ncomments for rank:5\r\ncomments for data :uid=37A059714A2B4B4280794DCA5C150DF0<\/pre>\n<h1><strong>\u7ed3\u8bba 01\uff1a<\/strong><\/h1>\n<pre><strong>always_forward_body\uff1a<\/strong>\u5f53\u8bbe\u7f6e\u4e3atrue\u65f6,\u7236\u8bf7\u6c42\u4e2d\u7684body\u8f6c\u53d1\u5230\u5b50\u8bf7\u6c42\u3002\u8bbe\u7f6e\u4e3afalse,\u4ec5\u8f6c\u53d1put\u548cpost\r\n\u8bf7\u6c42\u65b9\u5f0f\u4e2d\u7684body.<\/pre>\n<p>\u7ee7\u7eed\u66f4\u6539\u00a0<strong>\u6817\u5b50 01<\/strong>\u00a0\uff1a<\/p>\n<pre>local res = ngx.location.capture(\"\/comment\/\"..ngx.var.goodsId..\"?rank=5\",{\r\n    method = ngx.HTTP_GET,\r\n    body = 'hello, world',\r\n    always_forward_body = false, --\u4e5f\u53ef\u4ee5\u8bbe\u7f6e\u4e3atrue\r\n})<\/pre>\n<p>\u67e5\u770b\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre>200\r\ncomments for goodsId :123123\r\ncomments for rank:5\r\ncomments for data :hello, world<\/pre>\n<h1><strong>\u7ed3\u8bba 02\uff1a<\/strong><\/h1>\n<pre>\u5f53\u9009\u9879\u4e2d\u8bbe\u7f6e body \uff08\u53ea\u80fd\u4e3astring\uff09\u65f6\uff0calways_forward_body \u9009\u9879\u5931\u6548\u3002<\/pre>\n<h3>1.2.2 args \u548c vars<\/h3>\n<p>\u8fd9\u4e00\u7ec4\u7684\u7528\u6cd5\u6bd4\u8f83\u76f8\u4f3c\uff0c\u653e\u5728\u4e00\u5757\u8bb2\u4e86\u3002\u770b\u6817\u5b50\u5427\u3002<\/p>\n<pre><strong>\u6817\u5b50 02:<\/strong>\r\n\r\nlocation ~ \/comment\/([0-9]+) {\r\n    internal;\r\n    set $goodsId $1;\r\n    content_by_lua_block{\r\n        local args = ngx.req.get_uri_args()\r\n        ngx.say(\"comments for goodsId :\", ngx.var.goodsId)\r\n        ngx.say(\"comments for rank:\", args.rank)\r\n        ngx.say(\"comments for args.a:\", args.a)\r\n        ngx.say(\"comments for args.b:\", args.b)\r\n        ngx.say(\"comments for vars.a:\", ngx.var.a)\r\n        ngx.say(\"comments for vars.b:\", ngx.var.b)\r\n    }\r\n}\r\nlocation ~ \/goods\/detail\/([0-9]+) {\r\n    set $goodsId $1;\r\n    set $a '';\r\n    set $b '';\r\n    default_type  plain\/text;\r\n    content_by_lua_block{\r\n        local res = ngx.location.capture(\"\/comment\/\"..ngx.var.goodsId..\"?rank=5\",{\r\n            method = ngx.HTTP_GET,\r\n            args = {a = \"aa\", b = \"bb\"},\r\n            vars = {a = \"aa\", b = \"bb\"},\r\n        })\r\n        ngx.say(res.status)\r\n        ngx.say(res.body)\r\n    }\r\n}<\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre>200\r\ncomments for goodsId :123123\r\ncomments for rank:5\r\ncomments for args.a:aa\r\ncomments for args.b:bb\r\ncomments for vars.a:aa\r\ncomments for vars.b:bb<\/pre>\n<p>\u4ece\u6817\u5b50 02 \u4e2d\u53ef\u4ee5\u770b\u51fa\uff0cargs \u548c vars\u7684\u533a\u522b\u3002<\/p>\n<h1>\u7ed3\u8bba 03 \uff1a<\/h1>\n<pre>\u5728\u53d1\u9001\u53c2\u6570\u5230\u5b50\u8bf7\u6c42\u4e2d\uff0c\u4e00\u822c\u53c2\u6570\u4f7f\u7528 args\uff1b\u5982\u7279\u6b8a\u53c2\u6570\u53ef\u4ee5\u4f7f\u7528 vars\uff0c\u4f46\u4e5f\u53ef\u4ee5\u4f7f\u7528 args \u4ee3\u66ff\u3002<\/pre>\n<h1>1.23 ctx<\/h1>\n<p>\u8bf7\u770b\u6817\u5b50 03<\/p>\n<pre><strong>\u6817\u5b50 03:<\/strong>\r\n\r\nlocation ~ \/comment\/([0-9]+) {\r\n    internal;\r\n    set $goodsId $1;\r\n    content_by_lua_block{\r\n        ngx.ctx.foo = \"bar\"\r\n    }\r\n}\r\nlocation ~ \/goods\/detail\/([0-9]+) {\r\n    set $goodsId $1;\r\n    default_type  plain\/text;\r\n    content_by_lua_block{\r\n        local c = {}\r\n        local res = ngx.location.capture(\"\/comment\/\"..ngx.var.goodsId..\"?rank=5\",{\r\n            method = ngx.HTTP_GET,\r\n            ctx = c,\r\n        })\r\n        ngx.say(c.foo)\r\n        ngx.say(ngx.ctx.foo)\r\n    }\r\n}<\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre>bar\r\nnil<\/pre>\n<h1>1.24 copy_all_vars\u3001share_all_vars<\/h1>\n<p>\u8bf7\u770b\u6817\u5b5004<\/p>\n<pre><strong>\u6817\u5b50 04 \uff1a<\/strong>\r\n\r\nlocation ~ \/comment\/([0-9]+) {\r\n    internal;\r\n    set $goodsId $1;\r\n    set $dog \"$dog world\";\r\n    echo \"$uri dog: $dog\";\r\n}\r\nlocation ~ \/goods\/detail\/([0-9]+) {\r\n    set $goodsId $1;\r\n    default_type  plain\/text;\r\n    set $dog 'hello';\r\n    content_by_lua_block{\r\n        local res = ngx.location.capture(\"\/comment\/\"..ngx.var.goodsId..\"?rank=5\",{\r\n            method = ngx.HTTP_GET,\r\n            share_all_vars = true,\r\n        })\r\n        ngx.print(res.body)\r\n        ngx.say(ngx.var.uri, \": \", ngx.var.dog)\r\n    }\r\n}<\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre>\/comment\/123123 dog: hello world\r\n\/goods\/detail\/123123\/view: hello world<\/pre>\n<p>\u66f4\u6539\u6817\u5b50 04 \uff1a\u66f4\u6539 share_all_vars = true \u6210\u00a0<span class=\"pl-k\">copy_all_vars<\/span>\u00a0=<span class=\"pl-c1\">\u00a0true<\/span><\/p>\n<p>\u67e5\u770b\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre>\/comment\/123123 dog: hello world\r\n\/goods\/detail\/123123\/view: hello<\/pre>\n<h1>\u7ed3\u8bba 04 \uff1a<\/h1>\n<pre>share_all_vars \u53ef\u80fd\u4f1a\u6c61\u67d3\u5168\u5c40\u53d8\u91cf\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u3002<\/pre>\n<h1>\u4e8c\u3001ngx.location.capture_multi<\/h1>\n<p>\u548c ngx.location.capture \u7684\u7528\u6cd5\u76f8\u4f3c\uff0c\u4f46\u53ef\u4ee5\u540c\u65f6\u5e76\u53d1\u591a\u4e2a\u8bf7\u6c42\u3002<\/p>\n<p>\u67e5\u770b\u6817\u5b50 0 5<\/p>\n<pre>res1, res2, res3 <span class=\"pl-k\">=<\/span> ngx.<span class=\"pl-smi\">location<\/span>.<span class=\"pl-c1\">capture_multi<\/span>{\r\n     { <span class=\"pl-s\"><span class=\"pl-pds\">\"<\/span>\/foo<span class=\"pl-pds\">\"<\/span><\/span>, { args <span class=\"pl-k\">=<\/span> <span class=\"pl-s\"><span class=\"pl-pds\">\"<\/span>a=3&amp;b=4<span class=\"pl-pds\">\"<\/span><\/span> } },\r\n     { <span class=\"pl-s\"><span class=\"pl-pds\">\"<\/span>\/bar<span class=\"pl-pds\">\"<\/span><\/span> },\r\n     { <span class=\"pl-s\"><span class=\"pl-pds\">\"<\/span>\/baz<span class=\"pl-pds\">\"<\/span><\/span>, { method <span class=\"pl-k\">=<\/span> ngx.<span class=\"pl-smi\">HTTP_POST<\/span>, body <span class=\"pl-k\">=<\/span> <span class=\"pl-s\"><span class=\"pl-pds\">\"<\/span>hello<span class=\"pl-pds\">\"<\/span><\/span> } },\r\n } --\u6ce8\u610f\uff1a\u8fd9\u91cc\u7701\u7565\u4e86(),\u76f8\u5f53\u4e8e({{}})\r\n\r\n <span class=\"pl-k\">if<\/span> res1.<span class=\"pl-smi\">status<\/span> <span class=\"pl-k\">==<\/span> ngx.<span class=\"pl-smi\">HTTP_OK<\/span> <span class=\"pl-k\">then<\/span>\r\n     <span class=\"pl-c1\">...<\/span>\r\n <span class=\"pl-k\">end<\/span>\r\n\r\n <span class=\"pl-k\">if<\/span> res2.<span class=\"pl-smi\">body<\/span> <span class=\"pl-k\">==<\/span> <span class=\"pl-s\"><span class=\"pl-pds\">\"<\/span>BLAH<span class=\"pl-pds\">\"<\/span><\/span> <span class=\"pl-k\">then<\/span>\r\n     <span class=\"pl-c1\">...<\/span>\r\n <span class=\"pl-k\">end<\/span><\/pre>\n<pre><span class=\"pl-k\"> local<\/span> reqs <span class=\"pl-k\">=<\/span> {}\r\n <span class=\"pl-c1\">table.insert<\/span>(reqs, { <span class=\"pl-s\"><span class=\"pl-pds\">\"<\/span>\/mysql<span class=\"pl-pds\">\"<\/span><\/span> })\r\n <span class=\"pl-c1\">table.insert<\/span>(reqs, { <span class=\"pl-s\"><span class=\"pl-pds\">\"<\/span>\/postgres<span class=\"pl-pds\">\"<\/span><\/span> })\r\n <span class=\"pl-c1\">table.insert<\/span>(reqs, { <span class=\"pl-s\"><span class=\"pl-pds\">\"<\/span>\/redis<span class=\"pl-pds\">\"<\/span><\/span> })\r\n <span class=\"pl-c1\">table.insert<\/span>(reqs, { <span class=\"pl-s\"><span class=\"pl-pds\">\"<\/span>\/memcached<span class=\"pl-pds\">\"<\/span><\/span> })\r\n\r\n <span class=\"pl-c\">-- issue all the requests at once and wait until they all return<\/span>\r\n <span class=\"pl-k\">local<\/span> resps <span class=\"pl-k\">=<\/span> { ngx.<span class=\"pl-smi\">location<\/span>.<span class=\"pl-c1\">capture_multi<\/span>(reqs) }\r\n\r\n <span class=\"pl-c\">-- loop over the responses table<\/span>\r\n <span class=\"pl-k\">for<\/span> i, resp <span class=\"pl-k\">in<\/span> <span class=\"pl-c1\">ipairs<\/span>(resps) <span class=\"pl-k\">do<\/span>\r\n     <span class=\"pl-c\">-- process the response table \"resp\"<\/span>\r\n <span class=\"pl-k\">end<\/span><\/pre>\n<pre>ngx.<span class=\"pl-smi\">location<\/span>.<span class=\"pl-smi\">capture<\/span> <span class=\"pl-k\">=<\/span> <span class=\"pl-k\">function<\/span> (<span class=\"pl-smi\">uri<\/span>, <span class=\"pl-smi\">args<\/span>)\r\n    <span class=\"pl-k\">return<\/span> ngx.<span class=\"pl-smi\">location<\/span>.<span class=\"pl-c1\">capture_multi<\/span>({ {uri, args} })\r\n<span class=\"pl-k\">end<\/span><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>openResty\u4e2d\u7684ngx.location.capture\u548cngx.location.capture_multi\u7684\u4f7f\u7528 \u5728openResty\u4e2d\uff0cngx.location.capture_multi\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u529f\u80fd\u3002\u53ef\u4ee5\u5e94\u7528\u4e8e\u5e76\u53d1\u591a\u4e2a\u76f8\u4e92\u4e4b\u95f4\u6ca1\u6709\u4f9d\u8d56\u7684\u8bf7\u6c42\u3002\u5728\u73b0\u4ee3\u7684\u5e94\u7528\u67b6\u6784\u4e2d\u7ecf\u5e38\u4f7f\u7528\u5fae\u670d\u52a1\uff0c\u63d0\u4f9b\u4f4e\u7c92\u5ea6\u7684\u63a5\u53e3\uff1b\u4f46\u5728\u5ba2\u6237\u7aef\uff08\u4f8b\u5982\uff1aapp\u3001\u7f51\u9875\u670d\u52a1\uff09\u7ecf\u5e38\u9700\u8981\u8bf7\u6c42\u591a\u4e2a\u5fae\u670d\u52a1\u63a5\u53e3\uff0c\u624d\u80fd\u5b8c\u6574\u663e\u793a\u9875\u9762\u5185\u5bb9\u3002 \u4f8b\u5982\uff1a\u6253\u5f00\u4e00\u4e2a\u5546\u54c1\u8be6\u60c5\u9875\uff0c\u9700\u8981\u8bf7\u6c42\uff1a banner\u5e7f\u544a\u63a5\u53e3\uff1b \u5546\u54c1\u8be6\u60c5\uff1b \u5546\u54c1\u8bc4\u8bba\u7b49\u3002 \u90a3\u4e48ngx.location.capture_multi\u5c31\u6d3e\u4e0a\u5927\u7528\u573a\u4e86\uff0c\u5f53\u7136\u4f7f\u7528ngx.location.capture_multi\u4e0d\u662f\u552f\u4e00\u7684\u529e\u6cd5\uff0c\u5475\u5475\uff5e\u3002\u4e0b\u9762\u5c31\u6765\u770b\u770b\u8fd9\u4e2a\u4e1c\u4e1c\u7684\u7528\u6cd5\uff1b &nbsp; \u5148\u4ecb\u7ecd\u4e00\u4e0b\u4e0b\u9762\u8fd9\u51e0\u4e2a\u5e94\u7528\u4e4b\u95f4\u7684\u5dee\u522b\uff1b ngx.exec\uff1anginx\u8df3\u8f6c\uff1b\u8df3\u8f6c\u5230\u5176\u4ed6\u7684location\u4e2d\u6267\u884c\u3002\u4f46\u4ec5\u9650nginx\u5185\u90e8\u7684location\u3002 ngx.redirect\uff1a\u548cnginx.exec\u76f8\u4f3c\uff0c\u4f46\u652f\u6301\u5916\u90e8\u8df3\u8f6c\u3002 ngx.location.capture_multi\uff1a\u5e76\u53d1\u8bf7\u6c42\uff1b\u4f46\u4ec5\u9650nginx\u5185\u90e8\u7684location\u3002 http\u5305\u4e2dmulti\u65b9\u6cd5\uff1a\u6982\u5ff5\u4e0a\u4e0engx.location.capture_multi\u76f8\u4f3c\uff0c\u4f46\u652f\u6301\u5916\u90e8\u63a5\u53e3\u3002 \u4e00\u3001ngx.location.capture \u8bed\u6cd5:\u00a0res = ngx.location.capture(uri, options?) \u4f5c\u7528\u57df:\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua* 1.1 uri \u76f4\u63a5\u770b\u6817\u5b50\uff1a location ~ \/comment\/([0-9]+) { internal; set $goodsId $1; content_by_lua_block{ local args = ngx.req.get_uri_args() ngx.say(&#8220;comments for goodsId :&#8221;, ngx.var.goodsId) ngx.say(&#8220;comments for goods:&#8221;, args.offset) } } location ~ \/goods\/detail\/([0-9]+) { set $goodsId $1; 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