{"id":15405,"date":"2024-11-17T20:55:44","date_gmt":"2024-11-17T12:55:44","guid":{"rendered":"https:\/\/fwq.ai\/blog\/?p=15405"},"modified":"2024-11-17T20:55:44","modified_gmt":"2024-11-17T12:55:44","slug":"openresty%e4%b8%adngx_lua%e6%a8%a1%e5%9d%97%e6%8f%90%e4%be%9b%e7%9a%84api","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/15405\/","title":{"rendered":"openResty\u4e2dngx_lua\u6a21\u5757\u63d0\u4f9b\u7684API"},"content":{"rendered":"

ngx_lua\u6a21\u5757\u7684\u539f\u7406\uff1a<\/p>\n

    \n
  1. \u6bcf\u4e2aworker\uff08\u5de5\u4f5c\u8fdb\u7a0b\uff09\u521b\u5efa\u4e00\u4e2aLua VM\uff0cworker\u5185\u6240\u6709\u534f\u7a0b\u5171\u4eabVM\uff1b<\/li>\n
  2. \u5c06Nginx I\/O\u539f\u8bed\u5c01\u88c5\u540e\u6ce8\u5165 Lua VM\uff0c\u5141\u8bb8Lua\u4ee3\u7801\u76f4\u63a5\u8bbf\u95ee\uff1b<\/li>\n
  3. \u6bcf\u4e2a\u5916\u90e8\u8bf7\u6c42\u90fd\u7531\u4e00\u4e2aLua\u534f\u7a0b\u5904\u7406\uff0c\u534f\u7a0b\u4e4b\u95f4\u6570\u636e\u9694\u79bb\uff1b<\/li>\n
  4. Lua\u4ee3\u7801\u8c03\u7528I\/O\u64cd\u4f5c\u7b49\u5f02\u6b65\u63a5\u53e3\u65f6\uff0c\u4f1a\u6302\u8d77\u5f53\u524d\u534f\u7a0b\uff08\u5e76\u4fdd\u62a4\u4e0a\u4e0b\u6587\u6570\u636e\uff09\uff0c\u800c\u4e0d\u963b\u585eworker\uff1b<\/li>\n
  5. I\/O\u7b49\u5f02\u6b65\u64cd\u4f5c\u5b8c\u6210\u65f6\u8fd8\u539f\u76f8\u5173\u534f\u7a0b\u4e0a\u4e0b\u6587\u6570\u636e\uff0c\u5e76\u7ee7\u7eed\u8fd0\u884c<\/li>\n<\/ol>\n

    \u7cfb\u5217\u6587\u7ae0\uff1a<\/strong>
    \n\u6307\u4ee4\uff1aopenResty\u4e2dngx_lua\u6a21\u5757\u63d0\u4f9b\u7684\u6307\u4ee4
    \n<\/a>\u5e38\u91cf\uff1a    openResty\u4e2dngx_lua\u6a21\u5757\u63d0\u4f9b\u7684\u5e38\u91cf
    \n<\/a>API\uff1a    openResty\u4e2dngx_lua\u6a21\u5757\u63d0\u4f9b\u7684API<\/a><\/p>\n

     <\/p>\n

    \u4e09\u3001API<\/h1>\n

    3.1 print<\/strong><\/h1>\n

    \u8bed\u6cd5:<\/strong>\u00a0print(\u2026)
    \n<\/em>\u6a21\u5757:<\/strong>\u00a0init_by_lua*, init_worker_by_lua*, set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n

    \u7b49\u540c\u4e8e\uff1a<\/p>\n

    ngx.log<\/span>(ngx.NOTICE<\/span>, ...<\/span>)<\/pre>\n
    \u00a03.2 ngx.ctx<\/strong><\/h1>\n
    \u4f5c\u7528\u57df:<\/strong>\u00a0init_worker_by_lua*, set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*<\/em><\/p>\n
    \u4ec5\u5728\u540c\u4e00\u4e2a\u8bf7\u6c42\u5185\u5168\u5c40\uff0c\u6216\u8005\u53ef\u4ee5\u7406\u89e3\u4e3a\u540c\u4e00\u4e2alocation\u5185<\/p>\n
     location<\/span> \/sub <\/span>{\r\n     content_by_lua_block<\/span> {\r\n         ngx.say(\"sub<\/span> pre: \", ngx.ctx.blah)<\/span>\r\n         ngx.ctx.blah = 32<\/span>\r\n         ngx.say(\"<\/span>sub post: \", ngx.ctx.blah)<\/span>\r\n     }<\/span>\r\n }<\/span>\r\n\r\n location \/main {<\/span>\r\n     content_by_lua_block {<\/span>\r\n         ngx.ctx.blah = 73<\/span>\r\n         ngx.say(\"<\/span>main pre: \", ngx.ctx.blah)<\/span>\r\n         local res = ngx.location.capture(\"<\/span>\/sub\") \/\/\u53d1\u8d77\u65b0\u7684\u5b50\u8bf7\u6c42<\/span>\r\n         ngx.print(res.body)<\/span>\r\n         ngx.say(\"<\/span>main post: \", ngx.ctx.blah)<\/span>\r\n     }<\/span>\r\n }<\/span><\/pre>\n
    main pre: 73\r\nsub pre: nil\r\nsub post: 32\r\nmain post: 73<\/pre>\n
    3.3 ngx.location.capture\u3001ngx.location.capture_multi<\/strong><\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0res = ngx.location.capture(uri, options?)<\/em>
    \n\u8bed\u6cd5:<\/strong>\u00a0res1, res2, \u2026 = ngx.location.capture_multi({ {uri, options?}, {uri, options?}, \u2026 })<\/em>
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*<\/em><\/p>\n
    \u4f8b\u5982\uff1a<\/p>\n
    local res\u00a0=<\/span>\u00a0ngx.location<\/span>.capture<\/span>(uri, options)<\/p>\n
    res.status:\r\nres.header:\u8fd4\u56de\u5934\u90e8\u4fe1\u606f\uff0c\u5982 res.header[\"Set-Cookie\"]\uff0c\u8fd4\u56de{\"a=3\",\"foo=bar\",\"baz=blah\"}\r\nres.body:\r\nres.truncated:<\/code><\/code><\/pre>\n
    options:<\/strong><\/p>\n
    method:\r\nbody:\r\nargs:\r\nctx:\r\nvars:\r\ncopy_all_vars:\r\nshare_all_vars:\r\nalways_forward_body:<\/pre>\n
    \u53c2\u8003\uff1aopenResty\u4e2d\u7684ngx.location.capture\u548cngx.location.capture_multi\u7684\u4f7f\u7528<\/a><\/p>\n
    3.4 ngx.status<\/strong><\/h1>\n
    \u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*<\/em><\/p>\n
    \u8bbe\u7f6e nginx\u7684\u8f93\u51fastatus.<\/p>\n
    3.5 ngx.header.HEADER\u3001ngx.resp.get_headers<\/strong><\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.header.HEADER = VALUE<\/em>
    \n\u8bed\u6cd5:<\/strong>\u00a0value = ngx.header.HEADER<\/em>
    \n\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*<\/em><\/p>\n
    \u8bbe\u7f6e nginx\u7684\u8f93\u51faheader.<\/p>\n
    \u793a\u4f8b\uff1a<\/p>\n
    ngx.header<\/span>.content_type<\/span> =<\/span> '<\/span>text\/plain'<\/span><\/span>; --\u7b49\u4e8e ngx.header[\"Content-Type\"] = 'text\/plain'\r\nngx.header<\/span>[\"<\/span>X-My-Header\"<\/span><\/span>] =<\/span> '<\/span>blah blah'<\/span><\/span>; --\u7b49\u4e8e ngx.header.x_my_header = 'blah blah'<\/pre>\n
    \u5220\u9664\u793a\u4f8b\uff1a<\/p>\n
    ngx.header<\/span>[\"<\/span>X-My-Header\"<\/span><\/span>] =<\/span> nil<\/span>;\r\nngx.header<\/span>[\"<\/span>X-My-Header\"<\/span><\/span>] =<\/span> {};<\/pre>\n
    \u8bed\u6cd5:<\/strong>\u00a0headers = ngx.resp.get_headers(max_headers?, raw?)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, balancer_by_lua*<\/em><\/p>\n
    \u83b7\u53d6\u6240\u6709\u7684\u54cd\u5e94\u5934\u3002<\/p>\n
    local headers = ngx.resp.get_headers()\r\nfor k, v in pairs(headers) do\r\n    ngx.say(k,\":\", v)\r\nend<\/pre>\n
    \u00a03.6 ngx.req.raw_header\u3001<\/strong>ngx.req.get_headers<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0str = ngx.req.raw_header(no_request_line?)<\/em>
    \n\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*<\/em><\/p>\n
    \u83b7\u53d6\u8bf7\u6c42\u5934\u90e8\u4fe1\u606f\uff0c\u8fd4\u56de\u5b57\u7b26\u4e32\u3002<\/p>\n
    local header = ngx.req.raw_header()\r\nlocal header_no_request_line = ngx.req.raw_header(true)\r\nngx.say(header)\r\nngx.say(header_no_request_line)<\/pre>\n
    \u8f93\u51fa\uff1a<\/p>\n
    GET \/app\/detail HTTP\/1.1\r\nHost: xopen.100.com:8080\r\nUser-Agent: curl\/7.43.0\r\nAccept: *\/*\r\n\r\n\r\nHost: xopen.100.com:8080\r\nUser-Agent: curl\/7.43.0\r\nAccept: *\/*<\/pre>\n
    \u8bed\u6cd5:<\/strong>\u00a0headers = ngx.req.get_headers(max_headers?, raw?)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*<\/em><\/p>\n
    \u83b7\u53d6\u8bf7\u6c42\u5934\u90e8\u4fe1\u606f\uff0c\u8fd4\u56detable\u3002<\/p>\n
    \u53c2\u6570\uff1amax_headers\uff0c\u9650\u5236\u83b7\u53d6\u6570\u91cf\uff0c\u9ed8\u8ba4100\uff0c0\u4e3a\u4e0d\u9650\u5236\u3002
    \n\u53c2\u6570\uff1araw\uff0c\u662f\u5426\u5927\u5c0f\u5199\uff0c\u9ed8\u8ba4\u4e3afalse\u3002\u8be6\u7ec6\u770b\u4e0b\u9762\u7684\u6817\u5b50\u3002<\/p>\n
    local h = ngx.req.get_headers(10)\r\nfor k, v in pairs(h) do\r\n   ngx.say(k..\":\"..v)\r\nend\r\nngx.say(h[\"User-Agent\"]) --curl\/7.43.0\r\nngx.say(h[\"user-agent\"]) --curl\/7.43.0\r\nngx.say(h.user_agent) --curl\/7.43.0\r\nngx.say(h.User_Agent) --curl\/7.43.0\r\n\r\nlocal h = ngx.req.get_headers(10,true)\r\nfor k, v in pairs(h) do\r\n   ngx.say(k..\":\"..v)\r\nend\r\nngx.say(h[\"User-Agent\"]) --curl\/7.43.0\r\nngx.say(h[\"user-agent\"]) -- nil\r\nngx.say(h.user_agent) -- nil\r\nngx.say(h.User_Agent) -- nil<\/pre>\n
    \u8f93\u51fa\uff1a<\/p>\n
    host:xopen.100.com:8080\r\naccept:*\/*\r\nuser-agent:curl\/7.43.0\r\ncurl\/7.43.0\r\ncurl\/7.43.0\r\ncurl\/7.43.0\r\ncurl\/7.43.0\r\n\r\nHost:xopen.100.com:8080\r\nUser-Agent:curl\/7.43.0\r\nAccept:*\/*\r\ncurl\/7.43.0\r\nnil\r\nnil\r\nnil<\/pre>\n
    3.7 ngx.req.is_internal<\/strong><\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0is_internal = ngx.req.is_internal()
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*<\/em><\/p>\n
    \u5224\u65ad\u662f\u5426nginx\u5185\u90e8\u8df3\u8f6c\uff0c\u7b49\u4e8e false\u8868\u793a\u4e3a\u5916\u90e8\u8bf7\u6c42\u3002<\/p>\n
    3.8 ngx.req.start_time<\/strong><\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0secs = ngx.req.start_time()
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*<\/em><\/p>\n
    \u8ba1\u7b97\u8bf7\u6c42\u7684\u6267\u884c\u65f6\u95f4\uff0c\u53ef\u4ee5\u6a21\u62dfnginx\u4e2d\u7684\u00a0$request_time<\/code><\/p>\n
    ngx.update_time()\r\nlocal<\/span> request_time =<\/span> ngx.now<\/span>() -<\/span> ngx.req<\/span>.start_time<\/span>()<\/pre>\n
    tips 01:<\/strong>\u5728openResty\u4e2d\u7684\u65f6\u95f4\u90fd\u662f\u7f13\u5b58\u65f6\u95f4(\u540c\u4e00\u4e2a\u8bf7\u6c42\u5185)\uff0c\u5fc5\u987b\u4f7f\u7528 ngx.update_time() \u66f4\u65b0\u540e\uff0c\u624d\u80fd\u83b7\u53d6\u5230\u5f53\u524d\u7684\u51c6\u786e\u65f6\u95f4\u3002<\/p>\n
    tips 02\uff1a<\/strong>\u4f7f\u7528\u8be5\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u6bd4\u8f83\u4e0b lua_code_cache \u5f00\u542f\u548c\u5173\u95ed\u65f6\uff0c\u8bf7\u6c42\u6267\u884c\u7684\u65f6\u95f4\u3002\u6bd4\u8f83\u540e\u53d1\u73b0\u76f8\u5dee\u5f88\u591a\u5662\u2026.<\/p>\n
    tips 03\uff1a<\/strong>\u6709\u4e00\u4e2a\u56f0\u60d1\uff0c\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n
    local a = 0\r\nfor i = 1, 100, 1 do\r\n   a = a + 1\r\nend\r\nngx.update_time()\r\nlocal request_time = ngx.now() - ngx.req.start_time()\r\nngx.say(ngx.now())\r\nngx.say(ngx.req.start_time())\r\nngx.say(request_time)<\/pre>\n
    \u8f93\u51fa\uff1a<\/p>\n
    1511859137.633\r\n1511859137.631\r\n0.0019998550415039 --\u76f8\u51cf\u540e\u6210\u8fd9\u6837\u7684\u52d2\uff01\uff01<\/pre>\n
    3.9 ngx.today\u3001ngx.time\u3001ngx.now\u3001ngx.update_time\u3001ngx.localtime\u3001<\/strong>ngx.utctime\u3001ngx.cookie_time\u3001ngx.http_time\u3001ngx.parse_http_time<\/strong><\/h1>\n
    \u4f5c\u7528\u57df:<\/strong>\u00a0init_worker_by_lua*, set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0str = ngx.today()<\/em><\/p>\n
    local today = ngx.today()\r\nngx.say(today) -- 2017-11-28<\/pre>\n
    \u8bed\u6cd5:<\/strong>\u00a0secs = ngx.time()<\/em><\/p>\n
    local secs = ngx.time()\r\nngx.say(secs)  -- 1511859418<\/pre>\n
    \u8bed\u6cd5:<\/strong>\u00a0secs = ngx.now()<\/em><\/p>\n
    local secs = ngx.now()\r\nngx.say(secs) -- 1511859590.807<\/pre>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.update_time()<\/em><\/p>\n
    tips 04<\/strong>\uff1a\u66f4\u65b0\u5f53\u524d\u8bf7\u6c42\u5185\u7684\u7f13\u5b58\u65f6\u95f4\uff0c\u4f46ngx.req.start_time\u4e0d\u4f1a\u88ab\u66f4\u65b0\u3002<\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0str = ngx.localtime()<\/em><\/p>\n
    local date = ngx.localtime()\r\nngx.say(date) -- 2017-11-28 09:02:13<\/pre>\n
    \u8bed\u6cd5:<\/strong>\u00a0str = ngx.utctime()<\/em><\/p>\n
    local date = ngx.utctime()\r\nngx.say(date) -- 2017-11-28 09:02:13<\/pre>\n
    \u8bed\u6cd5:<\/strong>\u00a0str = ngx.cookie_time(sec)<\/em><\/p>\n
    \u8fd4\u56decookie\u8fc7\u671f\u65f6\u95f4\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n
    local date = ngx.cookie_time(ngx.time())\r\nngx.say(date) -- Tue, 28-Nov-17 09:20:13 GMT<\/pre>\n
    \u8bed\u6cd5:<\/strong>\u00a0str = ngx.http_time(sec)<\/em><\/p>\n
    \u8fd4\u56dehttp\u5934\u90e8\u7684Date\u7684\u5b57\u7b26\u4e32\u3002\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u54cd\u5e94\u7684\u5934\u90e8\u90fd\u4f1a\u6709\u4e00\u4e2aDate\uff0c\u5c31\u662f\u8fd9\u4e2a\u4e1c\u4e1c\u751f\u6210\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n
    local date = ngx.http_time(ngx.time())\r\nngx.say(date) -- Tue, 28 Nov 2017 09:22:24 GMT<\/pre>\n
    \u8bed\u6cd5:<\/strong>\u00a0sec = ngx.parse_http_time(str)<\/em><\/p>\n
    \u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u8fd4\u56de\u65f6\u95f4\u6233\u6216nil.<\/p>\n
    local date = ngx.parse_http_time(\"Tue, 28 Nov 2017 09:24:32 GMT\")\r\nngx.say(date)<\/pre>\n
    3.10 ngx.req.http_version<\/strong><\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0num = ngx.req.http_version()
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*<\/em><\/p>\n
    \u8fd4\u56de\u8bf7\u6c42\u534f\u8bae\u7684\u7248\u672c\u3002<\/p>\n
    local http_protocol = ngx.req.http_version()\r\nngx.say(http_protocol) -- 1.1<\/pre>\n
    3.11 ngx.req.get_method\u3001ngx.req.set_method<\/strong><\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0method_name = ngx.req.get_method()
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, balancer_by_lua*<\/em><\/p>\n
    \u83b7\u53d6\u5f53\u524d\u8bf7\u6c42\u7684\u65b9\u6cd5\u3002\u4f8b\u5982 GET\u3001POST<\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.req.set_method(method_id)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*<\/em><\/p>\n
    \u8bbe\u7f6e\u5b50<\/strong>\u8bf7\u6c42\u7684\u65b9\u6cd5\u3002\u6ce8\u610f\u53c2\u6570\u662fmethod\u7684id\uff0c\u5373\u5fc5\u987b\u4f7f\u7528ngx.HTTP_GET\u3001ngx.HTTP_POST\u8bbe\u7f6e\uff0c\u5177\u4f53\u53ef\u53c2\u8003\uff1aopenResty\u4e2dngx_lua\u6a21\u5757\u63d0\u4f9b\u7684\u5e38\u91cf<\/a><\/p>\n
    3.12 ngx.req.set_uri\u3001ngx.req.set_uri_args<\/strong><\/h1>\n
    tips 05\uff1a<\/strong>\u8fd9\u662f\u4e00\u7ec4\u975e\u5e38\u5b9e\u7528\u7684API\uff0c\u5b8c\u5168\u53ef\u4ee5\u66ff\u6362nginx\u4e2drewrite\u6a21\u5757\u3002\u4e3b\u8981\u5e94\u7528\u5728\u00a0rewrite_by_lua*\u6a21\u5757\u5185\u3002<\/span><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.req.set_uri(uri, jump?)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.req.set_uri_args(args)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*<\/em><\/p>\n
    ngx.req<\/span>.set_uri<\/span>(\"<\/span>\/foo\"<\/span><\/span>, true<\/span>) \r\n\u76f8\u5f53\u4e8e rewrite ^ <\/span>\/foo last<\/span>;<\/pre>\n
    ngx.req<\/span>.set_uri<\/span>(\"<\/span>\/foo\"<\/span><\/span>, false<\/span>) \r\n\u76f8\u5f53\u4e8e rewrite ^ <\/span>\/foo break; \r\n\u76f8\u5f53\u4e8e ngx.req<\/span>.set_uri<\/span>(\"<\/span>\/foo\"<\/span><\/span>)<\/pre>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    location<\/span> \/test <\/span>{\r\n     rewrite_by_lua_block<\/span> {\r\n         local<\/span> uri = ngx.re.sub(ngx.var.uri, \"^\/test\/(.*)\"<\/span>, \"\/$1<\/span>\"<\/span>, \"o\"<\/span>)\r\n         ngx.req.set_uri(uri)\r\n     }\r\n     proxy_pass<\/span> http:\/\/my_backend;\r\n }<\/pre>\n
    rewrite<\/span> ^ <\/span>\/foo?a=3? last<\/span>; \r\n\u76f8\u5f53\u4e8e\r\nngx.req.set_uri_args(\"a=3\")\r\nngx.req.set_uri(\"\/foo\", true)\r\n\u76f8\u5f53\u4e8e\r\nngx.req.set_uri_args({a<\/span> = 3})\r\nngx.req.set_uri(\"\/foo\", true)<\/pre>\n
    \u00a0\u793a\u4f8b\uff1a<\/strong><\/p>\n
    location \/test {\r\n    set_by_lua_block $res {\r\n        ngx.req.set_uri_args({a=1,aa=11})\r\n        ngx.req.set_uri(ngx.var.uri..\"\/set_lua_by_block\")\r\n    }\r\n    rewrite_by_lua_block {\r\n        ngx.req.set_uri_args({b=2,bb=22})\r\n        ngx.req.set_uri(ngx.var.uri..\"\/rewrite_lua_by_block\")\r\n    }\r\n    access_by_lua_block {\r\n        ngx.req.set_uri_args({c=3,cc=33})\r\n        ngx.req.set_uri(ngx.var.uri..\"\/access_by_lua_block\")\r\n    }\r\n    content_by_lua_block {\r\n        local args = ngx.req.get_uri_args()\r\n        for k, v in pairs(args) do\r\n            ngx.say(k,\":\",v)\r\n        end\r\n        ngx.say(ngx.var.uri)\r\n    }\r\n}<\/pre>\n
    \u8f93\u51fa\uff1a<\/strong><\/p>\n
    cc:33\r\n<\/span>c:3\r\n\/test\/set_lua_by_block\/rewrite_lua_by_block\/access_by_lua_block<\/pre>\n
    \u4e0b\u9762\u662f\u4e00\u4e2anginx\u7684rewrite\u7684\u4ee3\u7801<\/p>\n
    rewrite ^\/$                             \/index.php              break;\r\nrewrite ^\/index\\.html$                  \/index.php              break;\r\nrewrite ^\/case\\.html$                   \/vcase.php              break;\r\nrewrite ^\/case\/([0-9a-zA-Z]+)\\.html$    \/vcase.php?iid=$1       break;\r\nrewrite ^\/mobile\\.html$                 \/vmobile.php            break;\r\nrewrite ^\/email\\.html$                  \/vemail.php             break;\r\nrewrite ^\/mail\\.html$                   \/vmail.php              break;\r\nrewrite ^\/mail\/([0-9a-zA-Z]+)\\.html$    \/vmail.php?iid=$1       break;\r\nrewrite ^\/hosting\\.html$                \/vhosting.php           break;\r\nrewrite ^\/flow\\.html$                   \/vflow.php              break;\r\nrewrite ^\/news\\.html$                   \/vnews.php              break;\r\nrewrite ^\/news\/([0-9a-zA-Z]+)\/?$        \/vnews.php?do=$1        break;\r\nrewrite ^\/news\/([0-9a-zA-Z]+)\/([0-9a-zA-Z]+)\\.html$  \/vnews.php?do=$1&iid=$2    break;<\/pre>\n
    \u4f7f\u7528ngx_lua\u66ff\u6362\uff1a<\/p>\n
    local rules = {\r\n   [\"^\/$\"]                                        = \"\/php\/index.php\",\r\n   [\"^\/index.html$\"]                              = \"\/php\/index.php\",\r\n   [\"^\/case.html$\"]                               = \"\/php\/vcase.php\",\r\n   [\"^\/case\/([0-9a-zA-Z]+).html$\"]                = \"\/php\/vcase.php?iid=$1\",\r\n   [\"^\/mobile.html$\"]                             = \"\/php\/vmobile.php\",\r\n   [\"^\/email.html$\"]                              = \"\/php\/vemail.php\",\r\n   [\"^\/mail.html$\"]                               = \"\/php\/vmail.php\",\r\n   [\"^\/mail\/([0-9a-zA-Z]+).html$\"]                = \"\/php\/vmail.php?iid=$1\",\r\n   [\"^\/hosting.html$\"]                            = \"\/php\/vhosting.php\",\r\n   [\"^\/flow.html$\"]                               = \"\/php\/vflow.php\",\r\n   [\"^\/news.html$\"]                               = \"\/php\/vnews.php\",\r\n   [\"^\/news\/([0-9a-zA-Z]+).html$\"]                = \"\/php\/vnews.php?do=$1\",\r\n   [\"^\/news\/([0-9a-zA-Z]+)\/([0-9a-zA-Z]+).html$\"] = \"\/php\/vnews.php?do=$1&iid=$2\",\r\n}\r\n\r\nlocal replaceUri = \"\"\r\nfor pattern, replace in pairs(rules) do\r\n   local uri, n, _ = ngx.re.sub(ngx.var.uri, pattern, replace, \"jo\")\r\n   if n > 0 then\r\n      replaceUri = uri\r\n      break\r\n   end\r\nend\r\nif replaceUri ~= \"\" then\r\n   local splits = string:split(replaceUri, \"?\")\r\n   if splits[2] then\r\n      ngx.req.set_uri_args(splits[2])\r\n   end\r\n   ngx.req.set_uri(splits[1],true)\r\nend<\/pre>\n
    ngx\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u53c2\u8003\uff1aopenResty\u4e2d\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u4f7f\u7528<\/a><\/p>\n
    \u6ce8\uff1a\u867d\u7136\u770b\u4e0a\u53bb\u4f7f\u7528 ngx_lua\u66f4\u590d\u6742\u4e86\uff0c\u4f46\u78b0\u5230\u590d\u6742\u7684 rewrite \u7684\u65f6\uff0c\u5c31\u6d3e\u4e0a\u5927\u7528\u573a\u4e86\u3002<\/p>\n
    3.13\u00a0<\/strong>ngx.req.get_uri_args\u3001ngx.req.get_post_args<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0args = ngx.req.get_uri_args(max_args?)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, balancer_by_lua*<\/em><\/p>\n
    \u63a5\u6536url\u4e2d\u7684query\u53c2\u6570\uff0c\u9ed8\u8ba4\u63a5\u53d7\u6700\u5927\u7684\u53c2\u6570\u4e2a\u6570\u662f100\u3002<\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0args, err = ngx.req.get_post_args(max_args?)<\/em>
    \n\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*<\/em><\/p>\n
    \u63a5\u6536POST\u4e2dquery\u53c2\u6570\uff0c\u9ed8\u8ba4\u63a5\u53d7\u6700\u5927\u7684\u53c2\u6570\u4e2a\u6570\u662f100\u3002<\/p>\n
    \u7ed3\u8bba\uff1a<\/h1>\n
    \u6ce8\u610fMime Type \u5fc5\u9700\u662f application\/x-www-form-urlencoded \uff0c\u5728\u8c03\u7528\u8be5\u51fd\u6570\u524d\u5fc5\u9700\u5148\u8c03\u7528 \r\nngx.req.read_body \u6216\u8005\u5728nginx.conf\u4e2d\u5f00\u542f lua_need_request_body.<\/code><\/pre>\n
    \u00a03.14\u00a0<\/strong>ngx.req.set_header\u3001ngx.req.clear_header<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.req.set_header(header_name, header_value)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*<\/em><\/p>\n
    \u8bbe\u7f6e\u5b50\u8bf7\u6c42\u7684header.<\/p>\n
    ngx.req<\/span>.set_header<\/span>(\"<\/span>X-Foo\"<\/span><\/span>, nil<\/span>)\r\n\u7b49\u540c\u4e8e\r\nngx.req<\/span>.clear_header<\/span>(\"<\/span>X-Foo\"<\/span><\/span>)<\/pre>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.req.clear_header(header_name)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*<\/em><\/p>\n
    \u6e05\u9664\u5b50\u8bf7\u6c42\u7684header.<\/p>\n
    3.15
    \nngx.req.read_body\u3001ngx.req.discard_body\u3001ngx.req.get_body_data\u3001ngx.req.get_body_file\u3001ngx.req.set_body_data\u3001ngx.req.set_body_file\u3001ngx.req.init_body\u3001ngx.req.append_body\u3001ngx.req.finish_body<\/h1>\n
    \u53c2\u8003\uff1aopenResty\u4e2d\u8bf7\u6c42\u4f53(request body)\u7684\u8bbe\u7f6e\u4e0e\u8bfb\u53d6<\/a><\/p>\n
    3.16 ngx.req.socket<\/h1>\n
    \u53c2\u8003\uff1aopenResty\u4e2dcosocket\u7684\u63a7\u5236<\/a>
    \n<\/em><\/p>\n
    3.17 ngx.exec\u3001ngx.redirect<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.exec(uri, args?)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*<\/em><\/p>\n
    ngx.exce\u4ec5\u9650nginx\u5185\u90e8\u8df3\u8f6c\u3002<\/p>\n
    \u4f8b\u5982\uff1a<\/strong><\/p>\n
    ngx.exec<\/span>('<\/span>\/some-location'<\/span><\/span>);\r\nngx.exec<\/span>('<\/span>\/some-location'<\/span><\/span>, '<\/span>a=3&b=5&c=6'<\/span><\/span>);\r\nngx.exec<\/span>('<\/span>\/some-location?a=3&b=5'<\/span><\/span>, '<\/span>c=6'<\/span><\/span>);<\/pre>\n
    \u00a0\u4f8b\u5982\uff1a<\/strong><\/p>\n
    location<\/span> \/foo <\/span>{\r\n     content_by_lua_block<\/span> {\r\n         ngx.exec(\"@bar\", \"a=goodbye\");\r\n     }\r\n }\r\n\r\n location<\/span> @bar <\/span>{\r\n     content_by_lua_block<\/span> {\r\n         local<\/span> args = ngx.req.get_uri_args()\r\n         for<\/span> key, val in pairs(args) do\r\n             if<\/span> key == \"a\"<\/span> then\r\n                 ngx.say(val)\r\n             end<\/span>\r\n         end<\/span>\r\n     }\r\n }<\/pre>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.redirect(uri, status?)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*<\/em><\/p>\n
    \u652f\u6301\u5185\u90e8 \/ \u5916\u90e8\u8df3\u8f6c\u3002\u6ce8\u610f\u548cngx.exec\u7684\u533a\u522b\u3002<\/p>\n
    return<\/span> ngx.redirect<\/span>(\"<\/span>\/foo\"<\/span><\/span>)\r\nreturn<\/span> ngx.redirect<\/span>(\"<\/span>\/foo\"<\/span><\/span>, ngx.HTTP_MOVED_TEMPORARILY<\/span>)\r\nreturn<\/span> ngx.redirect<\/span>(\"<\/span>http:\/\/www.google.com\"<\/span><\/span>)\r\nreturn<\/span> ngx.redirect<\/span>(\"<\/span>\/foo\"<\/span><\/span>, 301<\/span>)<\/pre>\n
    3.18 ngx.send_headers\u3001ngx.headers_sent<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0ok, err = ngx.send_headers()
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0value = ngx.headers_sent
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*<\/em><\/p>\n
    3.19\u00a0 ngx.print\u3001ngx.say\u3001ngx.flush\u3001ngx.sleep<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0ok, err = ngx.print(\u2026)<\/em>
    \n\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0ok, err = ngx.say(\u2026)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0ok, err = ngx.flush(wait?)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.sleep(seconds)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*, ngx.timer.*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*<\/em><\/p>\n
    3.20 ngx.exit\u3001ngx.eof<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.exit(status)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    \u4e2d\u65ad\u8bf7\u6c42\u3002<\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0ok, err = ngx.eof()
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0rewrite_by_lua*, access_by_lua*, content_by_lua*<\/em><\/p>\n
    \u663e\u5f0f\u6307\u5b9a\u54cd\u5e94\u8f93\u51fa\u6d41\u7684\u7ed3\u675f\u3002<\/p>\n
    ngx.exit() \u548c ngx.eof()\u7684\u533a\u522b\uff1a<\/h3>\n
    \u672c\u8d28\u533a\u522b\u5728\u4e8engx.exit()<\/code>\u4f5c\u7528\u5728\u4e8e\u4e2d\u65ad\u5f53\u524d\u64cd\u4f5c\uff0c\u4e0d\u7ba1\u662fngx-lua\u6a21\u5757\u8bf7\u6c42\u5904\u7406\u7684\u5f53\u524d\u9636\u6bb5\u8fd8\u662f\u6574\u4e2a\u8bf7\u6c42\uff0c \u800c ngx.eof\uff08\uff09<\/code> \u53ea\u662f\u7ed3\u675f\u54cd\u5e94\u6d41\u7684\u8f93\u51fa\uff0c\u4e2d\u65adHTTP\u8fde\u63a5\uff0c\u540e\u9762\u7684\u4ee3\u7801\u903b\u8f91\u8fd8\u4f1a\u7ee7\u7eed\u5728\u670d\u52a1\u7aef\u6267\u884c\uff0c \u800c\u4e14 ngx.eof\uff08\uff09<\/code>\u652f\u6301\u8fd0\u884c\u7684\u4e0a\u4e0b\u6587\u6bd4 ngx.exit\uff08\uff09<\/code>\u5c11\u592a\u591a\uff0c ngx.eof\uff08\uff09<\/code> \u6709\u8fd4\u56de\u503c\uff0c ngx.exit\uff08\uff09<\/code>\u5219\u6ca1\u6709\uff0c\u56e0\u4e3a\u8bf7\u6c42\u5df2\u7ecf\u7ed3\u675f\u3002<\/pre>\n
    3.21 ngx.log<\/h2>\n
    \u8bed\u6cd5:<\/strong>\u00a0ngx.log(log_level, \u2026)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0init_by_lua*, init_worker_by_lua*, set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    3.22 ngx.escape_uri\u3001ngx.unescape_uri<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0newstr = ngx.escape_uri(str)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0init_by_lua*, init_worker_by_lua*, set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0newstr = ngx.unescape_uri(str)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0init_by_lua*, init_worker_by_lua*, set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*<\/em><\/p>\n
    3.23 ngx.encode_args\u3001ngx.decode_args<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0str = ngx.encode_args(table)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0table = ngx.decode_args(str, max_args?)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    3.24 ngx.encode_base64\u3001ngx.decode_base64<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0newstr = ngx.encode_base64(str, no_padding?)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0newstr = ngx.decode_base64(str)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    3.25 ngx.crc32_short\u3001ngx.crc32_long<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0intval = ngx.crc32_short(str)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0intval = ngx.crc32_long(str)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    3.26 ngx.hmac_sha1\u3001ngx.sha1_bin<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0digest = ngx.hmac_sha1(secret_key, str)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0digest = ngx.sha1_bin(str)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    3.27 ngx.md5\u3001ngx.md5_bin<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0digest = ngx.md5(str)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    \u8bed\u6cd5:<\/strong>\u00a0digest = ngx.md5_bin(str)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    3.28 ngx.quote_sql_str<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0quoted_value = ngx.quote_sql_str(raw_value)
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua*<\/em><\/p>\n
    3.29 ngx.is_subrequest<\/h1>\n
    \u8bed\u6cd5:<\/strong>\u00a0value = ngx.is_subrequest
    \n<\/em>\u4f5c\u7528\u57df:<\/strong>\u00a0set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*<\/em><\/p>\n
    3.30 ngx.shared.DICT<\/h1>\n
    \u7528\u6cd5\u53c2\u8003\uff1aopenResty\u4e2dngx.shared.DICT\u7684\u7528\u6cd5<\/a><\/p>\n
     <\/p>\n","protected":false},"excerpt":{"rendered":"
    ngx_lua\u6a21\u5757\u7684\u539f\u7406\uff1a \u6bcf\u4e2aworker\uff08\u5de5\u4f5c\u8fdb\u7a0b\uff09\u521b\u5efa\u4e00\u4e2aLua VM\uff0cworker\u5185\u6240\u6709\u534f\u7a0b\u5171\u4eabVM\uff1b \u5c06Nginx I\/O\u539f\u8bed\u5c01\u88c5\u540e\u6ce8\u5165 Lua VM\uff0c\u5141\u8bb8Lua\u4ee3\u7801\u76f4\u63a5\u8bbf\u95ee\uff1b \u6bcf\u4e2a\u5916\u90e8\u8bf7\u6c42\u90fd\u7531\u4e00\u4e2aLua\u534f\u7a0b\u5904\u7406\uff0c\u534f\u7a0b\u4e4b\u95f4\u6570\u636e\u9694\u79bb\uff1b Lua\u4ee3\u7801\u8c03\u7528I\/O\u64cd\u4f5c\u7b49\u5f02\u6b65\u63a5\u53e3\u65f6\uff0c\u4f1a\u6302\u8d77\u5f53\u524d\u534f\u7a0b\uff08\u5e76\u4fdd\u62a4\u4e0a\u4e0b\u6587\u6570\u636e\uff09\uff0c\u800c\u4e0d\u963b\u585eworker\uff1b I\/O\u7b49\u5f02\u6b65\u64cd\u4f5c\u5b8c\u6210\u65f6\u8fd8\u539f\u76f8\u5173\u534f\u7a0b\u4e0a\u4e0b\u6587\u6570\u636e\uff0c\u5e76\u7ee7\u7eed\u8fd0\u884c \u7cfb\u5217\u6587\u7ae0\uff1a \u6307\u4ee4\uff1aopenResty\u4e2dngx_lua\u6a21\u5757\u63d0\u4f9b\u7684\u6307\u4ee4 \u5e38\u91cf\uff1aopenResty\u4e2dngx_lua\u6a21\u5757\u63d0\u4f9b\u7684\u5e38\u91cf API\uff1aopenResty\u4e2dngx_lua\u6a21\u5757\u63d0\u4f9b\u7684API   \u4e09\u3001API 3.1 print \u8bed\u6cd5:\u00a0print(\u2026) \u6a21\u5757:\u00a0init_by_lua*, init_worker_by_lua*, set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua*, ssl_certificate_by_lua*, ssl_session_fetch_by_lua*, ssl_session_store_by_lua* \u7b49\u540c\u4e8e\uff1a ngx.log(ngx.NOTICE, …) \u00a03.2 ngx.ctx \u4f5c\u7528\u57df:\u00a0init_worker_by_lua*, set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*, balancer_by_lua* \u4ec5\u5728\u540c\u4e00\u4e2a\u8bf7\u6c42\u5185\u5168\u5c40\uff0c\u6216\u8005\u53ef\u4ee5\u7406\u89e3\u4e3a\u540c\u4e00\u4e2alocation\u5185 location \/sub { content_by_lua_block { ngx.say(“sub […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-15405","post","type-post","status-publish","format-standard","hentry","category-docker"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=15405"}],"version-history":[{"count":1,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15405\/revisions"}],"predecessor-version":[{"id":15406,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15405\/revisions\/15406"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=15405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=15405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=15405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}