{"id":97150,"date":"2024-10-20T15:25:17","date_gmt":"2024-10-20T07:25:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/97150\/"},"modified":"2024-10-20T15:25:17","modified_gmt":"2024-10-20T07:25:17","slug":"qt%e5%a6%82%e4%bd%95%e5%b0%87%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8c%87%e5%90%91%e4%b9%8b%e4%b8%80%e8%a1%8c%ef%bc%9f-qt-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%80%8e%e9%ba%bc%e6%8c%87%e5%90%91%e4%b9%8b%e4%b8%80","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/97150\/","title":{"rendered":"Qt\u5982\u4f55\u5c07\u6578\u64da\u5eab\u6307\u5411\u4e4b\u4e00\u884c\uff1f (qt \u6578\u64da\u5eab\u600e\u9ebc\u6307\u5411\u4e4b\u4e00\u884c)"},"content":{"rendered":"<h1 id=\"qt%e5%a6%82%e4%bd%95%e5%b0%87%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8c%87%e5%90%91%e4%b9%8b%e4%b8%80%e8%a1%8c%ef%bc%9f-oSzyxbkTxG\">Qt\u5982\u4f55\u5c07\u6578\u64da\u5eab\u6307\u5411\u4e4b\u4e00\u884c\uff1f<\/h1>\n<p>\u5728\u958b\u767c\u61c9\u7528\u7a0b\u5e8f\u6642\uff0c\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002Qt\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u8de8\u5e73\u53f0\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u6846\u67b6\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Qt\u4e2d\u5c07\u6578\u64da\u5eab\u6307\u5411\u7279\u5b9a\u7684\u4e00\u884c\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"qt%e6%95%b8%e6%93%9a%e5%ba%ab%e6%a8%a1%e7%b5%84%e6%a6%82%e8%bf%b0-oSzyxbkTxG\">Qt\u6578\u64da\u5eab\u6a21\u7d44\u6982\u8ff0<\/h2>\n<p>Qt\u63d0\u4f9b\u4e86QtSql\u6a21\u7d44\uff0c\u9019\u662f\u4e00\u500b\u7528\u65bc\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u5f37\u5927\u5de5\u5177\u3002\u5b83\u652f\u6301\u591a\u7a2e\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u5305\u62ecSQLite\u3001MySQL\u3001PostgreSQL\u7b49\u3002\u4f7f\u7528QtSql\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u57f7\u884cSQL\u67e5\u8a62\u3001\u66f4\u65b0\u6578\u64da\u548c\u7ba1\u7406\u6578\u64da\u5eab\u9023\u63a5\u3002<\/p>\n<h2 id=\"%e9%80%a3%e6%8e%a5%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab-oSzyxbkTxG\">\u9023\u63a5\u5230\u6578\u64da\u5eab<\/h2>\n<p>\u5728\u958b\u59cb\u64cd\u4f5c\u6578\u64da\u5eab\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u9023\u63a5\u5230SQLite\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>\n#include &lt;QSqlDatabase&gt;\n#include &lt;QSqlError&gt;\n#include &lt;QSqlQuery&gt;\n#include &lt;QDebug&gt;\n\nQSqlDatabase db = QSqlDatabase::addDatabase(\"QSQLITE\");\ndb.setDatabaseName(\"example.db\");\n\nif (!db.open()) {\n    qDebug() &lt;&lt; \"\u7121\u6cd5\u9023\u63a5\u5230\u6578\u64da\u5eab\uff1a\" &lt;&lt; db.lastError().text();\n}\n<\/code><\/pre>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e7%89%b9%e5%ae%9a%e8%a1%8c-oSzyxbkTxG\">\u67e5\u8a62\u7279\u5b9a\u884c<\/h2>\n<p>\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528SQL\u67e5\u8a62\u4f86\u7372\u53d6\u7279\u5b9a\u7684\u6578\u64da\u884c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u67e5\u8a62\u7279\u5b9a\u884c\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nQSqlQuery query;\nquery.prepare(\"SELECT * FROM users WHERE id = :id\");\nquery.bindValue(\":id\", 1); \/\/ \u5047\u8a2d\u6211\u5011\u8981\u67e5\u8a62ID\u70ba1\u7684\u7528\u6236\n\nif (query.exec()) {\n    while (query.next()) {\n        QString name = query.value(\"name\").toString();\n        QString email = query.value(\"email\").toString();\n        qDebug() &lt;&lt; \"\u7528\u6236\u540d\uff1a\" &lt;&lt; name &lt;&lt; \"\u96fb\u5b50\u90f5\u4ef6\uff1a\" &lt;&lt; email;\n    }\n} else {\n    qDebug() &lt;&lt; \"\u67e5\u8a62\u5931\u6557\uff1a\" &lt;&lt; query.lastError().text();\n}\n<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%a8%a1%e5%9e%8b%e8%a6%96%e5%9c%96%e6%9e%b6%e6%a7%8b-oSzyxbkTxG\">\u4f7f\u7528\u6a21\u578b\u8996\u5716\u67b6\u69cb<\/h2>\n<p>Qt\u9084\u63d0\u4f9b\u4e86\u6a21\u578b\u8996\u5716\u67b6\u69cb\uff0c\u9019\u4f7f\u5f97\u6578\u64da\u7684\u986f\u793a\u548c\u64cd\u4f5c\u66f4\u52a0\u9748\u6d3b\u3002\u4f7f\u7528QSqlTableModel\u53ef\u4ee5\u8f15\u9b06\u5730\u5c07\u6578\u64da\u5eab\u8868\u683c\u6620\u5c04\u5230\u8996\u5716\u4e2d\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528QSqlTableModel\u4f86\u6307\u5411\u7279\u5b9a\u884c\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n#include &lt;QSqlTableModel&gt;\n#include &lt;QTableView&gt;\n\nQSqlTableModel *model = new QSqlTableModel;\nmodel-&gt;setTable(\"users\");\nmodel-&gt;select();\n\nQTableView *view = new QTableView;\nview-&gt;setModel(model);\nview-&gt;setCurrentIndex(model-&gt;index(0, 0)); \/\/ \u6307\u5411\u7b2c\u4e00\u884c\nview-&gt;show();\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-oSzyxbkTxG\">\u7e3d\u7d50<\/h2>\n<p>\u5728Qt\u4e2d\uff0c\u5c07\u6578\u64da\u5eab\u6307\u5411\u7279\u5b9a\u7684\u4e00\u884c\u662f\u901a\u904e\u4f7f\u7528SQL\u67e5\u8a62\u6216\u6a21\u578b\u8996\u5716\u67b6\u69cb\u4f86\u5be6\u73fe\u7684\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u7c21\u55ae\u6613\u7528\uff0c\u9084\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u548c\u986f\u793a\u6578\u64da\u3002\u7121\u8ad6\u662f\u4f7f\u7528QSqlQuery\u9032\u884c\u76f4\u63a5\u67e5\u8a62\uff0c\u9084\u662f\u4f7f\u7528QSqlTableModel\u9032\u884c\u6578\u64da\u7d81\u5b9a\uff0cQt\u90fd\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u6eff\u8db3\u958b\u767c\u8005\u7684\u9700\u6c42\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684Qt\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\uff0cServer.HK\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u60a8\u90fd\u53ef\u4ee5\u5728\u6211\u5011\u7684\u7db2\u7ad9\u4e0a\u627e\u5230\u5408\u9069\u7684\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Qt\u4e2d\u5c07\u6578\u64da\u5eab\u6307\u5411\u7279\u5b9a\u884c\uff0c\u7c21\u5316\u6578\u64da\u64cd\u4f5c\u548c\u67e5\u8a62\u904e\u7a0b\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\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-97150","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97150","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=97150"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97150\/revisions"}],"predecessor-version":[{"id":97151,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97150\/revisions\/97151"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=97150"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=97150"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=97150"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}