{"id":187170,"date":"2024-11-11T12:02:18","date_gmt":"2024-11-11T04:02:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187170\/"},"modified":"2024-11-11T12:02:19","modified_gmt":"2024-11-11T04:02:19","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%af%a6%e7%8f%be%e6%8c%89%e5%b0%8f%e6%99%82%e7%b4%af%e8%a8%88%e6%95%b8%e6%93%9a%e7%b5%b1%e8%a8%88-%e6%95%b8%e6%93%9a%e5%ba%ab-%e6%8c%89%e5%b0%8f%e6%99%82%e7%b4%af","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187170\/","title":{"rendered":"\u6578\u64da\u5eab\u5be6\u73fe\u6309\u5c0f\u6642\u7d2f\u8a08\u6578\u64da\u7d71\u8a08 (\u6578\u64da\u5eab \u6309\u5c0f\u6642\u7d2f\u8a08)"},"content":{"rendered":"

\u6578\u64da\u5eab\u5be6\u73fe\u6309\u5c0f\u6642\u7d2f\u8a08\u6578\u64da\u7d71\u8a08<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u5206\u6790\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u7279\u5225\u662f\u5728\u9700\u8981\u6309\u5c0f\u6642\u7d2f\u8a08\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\uff0c\u5982\u4f55\u6709\u6548\u5730\u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb\u548c\u67e5\u8a62\u8a9e\u53e5\uff0c\u6210\u70ba\u4e86\u8a31\u591a\u4f01\u696d\u9762\u81e8\u7684\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u5be6\u73fe\u6309\u5c0f\u6642\u7d2f\u8a08\u6578\u64da\u7d71\u8a08\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

\u6578\u64da\u5eab\u8a2d\u8a08<\/h2>\n

\u9996\u5148\uff0c\u70ba\u4e86\u5be6\u73fe\u6309\u5c0f\u6642\u7d2f\u8a08\u7684\u6578\u64da\u7d71\u8a08\uff0c\u6211\u5011\u9700\u8981\u8a2d\u8a08\u4e00\u500b\u5408\u9069\u7684\u6578\u64da\u5eab\u7d50\u69cb\u3002\u5047\u8a2d\u6211\u5011\u7684\u61c9\u7528\u5834\u666f\u662f\u8a18\u9304\u7db2\u7ad9\u7684\u8a2a\u554f\u91cf\uff0c\u6211\u5011\u53ef\u4ee5\u8a2d\u8a08\u4e00\u500b\u540d\u70ba visits<\/code> \u7684\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n

\nCREATE TABLE visits (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    visit_time DATETIME NOT NULL,\n    user_id INT NOT NULL,\n    page VARCHAR(255) NOT NULL\n);\n<\/code><\/pre>\n
\u5728\u9019\u500b\u8868\u4e2d\uff0cvisit_time<\/code> \u5b57\u6bb5\u7528\u4f86\u8a18\u9304\u6bcf\u6b21\u8a2a\u554f\u7684\u6642\u9593\uff0cuser_id<\/code> \u7528\u4f86\u6a19\u8b58\u8a2a\u554f\u8005\uff0cpage<\/code> \u5247\u8a18\u9304\u4e86\u8a2a\u554f\u7684\u9801\u9762\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u80fd\u5920\u5e6b\u52a9\u6211\u5011\u5f8c\u7e8c\u9032\u884c\u6578\u64da\u7684\u7d71\u8a08\u548c\u5206\u6790\u3002<\/p>\n
\u6309\u5c0f\u6642\u7d2f\u8a08\u6578\u64da\u7684\u67e5\u8a62<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u7de8\u5beb\u67e5\u8a62\u8a9e\u53e5\u4f86\u5be6\u73fe\u6309\u5c0f\u6642\u7d2f\u8a08\u7684\u6578\u64da\u7d71\u8a08\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u67e5\u8a62\uff0c\u8a72\u67e5\u8a62\u5c07\u8fd4\u56de\u904e\u53bb24\u5c0f\u6642\u5167\u6bcf\u5c0f\u6642\u7684\u8a2a\u554f\u91cf\uff1a<\/p>\n
\nSELECT \n    DATE_FORMAT(visit_time, '%Y-%m-%d %H:00:00') AS hour,\n    COUNT(*) AS visit_count\nFROM \n    visits\nWHERE \n    visit_time >= NOW() - INTERVAL 24 HOUR\nGROUP BY \n    hour\nORDER BY \n    hour;\n<\/code><\/pre>\n
\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86 DATE_FORMAT<\/code> \u51fd\u6578\u4f86\u5c07 visit_time<\/code> \u683c\u5f0f\u5316\u70ba\u5c0f\u6642\uff0c\u4e26\u4f7f\u7528 COUNT(*)<\/code> \u4f86\u8a08\u7b97\u6bcf\u5c0f\u6642\u7684\u8a2a\u554f\u91cf\u3002WHERE<\/code> \u5b50\u53e5\u78ba\u4fdd\u6211\u5011\u53ea\u8003\u616e\u904e\u53bb24\u5c0f\u6642\u7684\u6578\u64da\uff0cGROUP BY<\/code> \u5b50\u53e5\u5247\u5c07\u7d50\u679c\u6309\u5c0f\u6642\u5206\u7d44\u3002<\/p>\n
\u6578\u64da\u7684\u53ef\u8996\u5316<\/h2>\n
\u7372\u5f97\u6309\u5c0f\u6642\u7d2f\u8a08\u7684\u6578\u64da\u5f8c\uff0c\u4e0b\u4e00\u6b65\u662f\u5c07\u9019\u4e9b\u6578\u64da\u9032\u884c\u53ef\u8996\u5316\u3002\u53ef\u4ee5\u4f7f\u7528\u5404\u7a2e\u5716\u8868\u5eab\uff08\u5982 Chart.js \u6216 D3.js\uff09\u4f86\u5c55\u793a\u9019\u4e9b\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 Chart.js \u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n
\nconst ctx = document.getElementById('myChart').getContext('2d');\nconst myChart = new Chart(ctx, {\n    type: 'line',\n    data: {\n        labels: ['2023-10-01 00:00', '2023-10-01 01:00', '2023-10-01 02:00', ...],\n        datasets: [{\n            label: '\u8a2a\u554f\u91cf',\n            data: [12, 19, 3, ...],\n            borderColor: 'rgba(75, 192, 192, 1)',\n            borderWidth: 1\n        }]\n    },\n    options: {\n        scales: {\n            y: {\n                beginAtZero: true\n            }\n        }\n    }\n});\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5275\u5efa\u4e86\u4e00\u500b\u6298\u7dda\u5716\uff0c\u986f\u793a\u6bcf\u5c0f\u6642\u7684\u8a2a\u554f\u91cf\u3002\u901a\u904e\u9019\u7a2e\u65b9\u5f0f\uff0c\u4f01\u696d\u53ef\u4ee5\u76f4\u89c0\u5730\u4e86\u89e3\u7db2\u7ad9\u7684\u6d41\u91cf\u8da8\u52e2\uff0c\u4e26\u6839\u64da\u6578\u64da\u505a\u51fa\u76f8\u61c9\u7684\u6c7a\u7b56\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u901a\u904e\u5408\u7406\u7684\u6578\u64da\u5eab\u8a2d\u8a08\u548c\u6709\u6548\u7684\u67e5\u8a62\u8a9e\u53e5\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u6309\u5c0f\u6642\u7d2f\u8a08\u7684\u6578\u64da\u7d71\u8a08\u3002\u9019\u4e0d\u50c5\u80fd\u5e6b\u52a9\u4f01\u696d\u66f4\u597d\u5730\u7406\u89e3\u7528\u6236\u884c\u70ba\uff0c\u9084\u80fd\u70ba\u672a\u4f86\u7684\u696d\u52d9\u6c7a\u7b56\u63d0\u4f9b\u6709\u529b\u7684\u6578\u64da\u652f\u6301\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5be6\u73fe\u6578\u64da\u5eab\u6309\u5c0f\u6642\u7d2f\u8a08\u6578\u64da\u7d71\u8a08\uff0c\u63d0\u4f9b\u7cbe\u78ba\u7684\u6642\u9593\u5e8f\u5217\u5206\u6790\uff0c\u52a9\u529b\u696d\u52d9\u6c7a\u7b56\u8207\u6578\u64da\u9a45\u52d5\u7684\u6d1e\u5bdf\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-187170","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=187170"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187170\/revisions"}],"predecessor-version":[{"id":187171,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187170\/revisions\/187171"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187170"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}