{"id":1359,"date":"2023-04-04T11:21:51","date_gmt":"2023-04-04T03:21:51","guid":{"rendered":"https:\/\/www.huangrongzhen.ink\/?p=1359"},"modified":"2023-04-11T16:01:48","modified_gmt":"2023-04-11T08:01:48","slug":"qt-%e8%bf%9e%e6%8e%a5mysql%e6%95%b0%e6%8d%ae%e5%ba%93","status":"publish","type":"post","link":"https:\/\/www.huangrongzhen.ink\/?p=1359","title":{"rendered":"Qt  \u8fde\u63a5MySQL\u6570\u636e\u5e93"},"content":{"rendered":"\n<p>\u4e0b\u8f7d\u5b89\u88c5MySql\uff0c\u7136\u540e\u65b0\u5efa\u4e00\u4e2a\u672c\u5730\u6570\u636e\u5e93<\/p>\n\n\n\n<p>\u5728Qt\u65b0\u5efa\u4e00\u4e2aProject\uff0c\u57fa\u7c7b\u9009\u62e9widget\uff0c\u7b80\u5355\u7684\u6d4b\u8bd5\u6570\u636e\u5e93\u8fde\u63a5<\/p>\n\n\n\n<p>\u5728.pro\u52a0\u5165<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"cpp\" class=\"language-cpp line-numbers\">QT += sql<\/code><\/pre>\n\n\n\n<p>\u5728widget.h\u52a0\u5165\u4ee5\u4e0b\u5934\u6587\u4ef6<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"cpp\" class=\"language-cpp line-numbers\">#include &lt;QtSql\/QSqlDatabase&gt;\n#include &lt;QDebug&gt;\n#include &lt;QMessageBox&gt;<\/code><\/pre>\n\n\n\n<p>\u5728widget.cpp widget\u7684\u6784\u9020\u51fd\u6570\u52a0\u5165\u4ee5\u4e0b\u5185\u5bb9<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"cpp\" class=\"language-cpp line-numbers\"> QSqlDatabase db = QSqlDatabase::addDatabase(\"QMYSQL\"); \/\/\u8fd9\u91cc\u4f7f\u7528\u7684\u662fMySQL\u7684\u9a71\u52a8\u7c7b\u578b\uff0c\u5176\u4ed6\u9a71\u52a8\u7c7b\u578b\u53ef\u4ee5\u53c2\u8003Qt\u7684\u5e2e\u52a9\u624b\u518c\n        db.setHostName(\"127.0.0.1\");\/\/localhost\n        db.setPort(3306);           \/\/\u9ed8\u8ba4\u7aef\u53e3\n        db.setDatabaseName(\"data\"); \/\/\u7528\u6237\u81ea\u5efa\u6570\u636e\u5e93\u540d\u79f0\n        db.setUserName(\"root\");     \/\/\u7528\u6237\u540d\n        db.setPassword(\"123456\");   \/\/\u6570\u636e\u5e93\u7684\u5bc6\u7801\uff08\u5982\u679c\u4f7f\u7528\u7684\u662fMySQL\uff0c\u90a3\u5c31\u662f\u4f60\u767b\u5f55\u8d26\u53f7\u7684\u90a3\u4e2a\u5bc6\u7801\uff09\n        bool ok = db.open();        \/\/\u5b9a\u4e49\u4e00\u4e2a\u6807\u5fd7\u91cf\uff0c\u8fd4\u56de\u6570\u636e\u5e93\u8fde\u63a5\u72b6\u6001\n        if (ok){\n            QMessageBox::information(this, \"infor\", \"success\");\n        }\n        else {\n            QMessageBox::information(this, \"infor\", \"open failed\");\n\n        }\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"479\" height=\"412\" src=\"https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/image-1.png\" alt=\"\" class=\"wp-image-1361\" srcset=\"https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/image-1.png 479w, https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/image-1-300x258.png 300w, https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/image-1-349x300.png 349w\" sizes=\"(max-width: 479px) 100vw, 479px\" \/><\/figure>\n\n\n\n<p>\u5f53\u7136\uff0c\u4ee5\u4e0a\u7684\u6b65\u9aa4\u662f\u57fa\u4e8e\u5df2\u7ecf\u5b89\u88c5\u597dMySQL\u9a71\u52a8\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u3002\u6240\u4ee5\u5728\u64cd\u4f5c\u524d\uff0c\u9700\u8981\u68c0\u67e5\u4e00\u4e0b\u73b0\u5728\u6709\u54ea\u4e9b\u53ef\u7528\u7684\u9a71\u52a8\u3002<\/p>\n\n\n\n<p>\u5728widget\u7684\u6784\u9020\u51fd\u6570\u91cc\u6dfb\u52a0\u8fd9\u4e24\u53e5<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"cpp\" class=\"language-cpp line-numbers\"> qDebug() &lt;&lt; QSqlDatabase::drivers();      \/\/\u6253\u5370\u5f53\u524d\u53ef\u7528\u9a71\u52a8<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"564\" height=\"44\" src=\"https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/image-3.png\" alt=\"\" class=\"wp-image-1364\" srcset=\"https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/image-3.png 564w, https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/image-3-300x23.png 300w, https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/image-3-548x44.png 548w\" sizes=\"(max-width: 564px) 100vw, 564px\" \/><figcaption class=\"wp-element-caption\">\u6253\u5370\u51fa\u6765\u7684\u8fd9\u4e9b\u90fd\u53ef\u4ee5\u4f7f\u7528\uff0c\u6bd4\u5982\u6709QSLITE\uff0c\u5c31\u53ef\u4ee5\u5728\u65b0\u5efa\u6570\u636e\u5e93\u7684\u65f6\u5019\u9009\u62e9\u6b64\u7c7b\u578b\u3002\u5982\u679c\u60f3\u8981\u4f7f\u7528\u7684\u6570\u636e\u5e93\u7c7b\u578b\uff0c\u4f46\u662f\u53c8\u6ca1\u6709\u9a71\u52a8\u7684\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u81ea\u5df1\u627e\u5bf9\u5e94\u7684\u9a71\u52a8\u8fdb\u884c\u4e0b\u8f7d\u5b89\u88c5\u3002<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u6ce8\u610f\uff1a<\/strong><\/h2>\n\n\n\n<p class=\"has-sitetext-color has-text-color\">\u7b2c\u4e00\u6b21\u8fde\u63a5mysql\u7684\u65f6\u5019\uff0c\u6700\u5e38\u89c1\u7684\u62a5\u9519\u5c31\u662f\uff1a<em>\u201dQSqlDatabase: QMYSQL driver not loaded\u201c<\/em><\/p>\n\n\n\n<p>\u7f51\u4e0a\u5927\u591a\u6570\u7684\u8bf4\u6cd5\u90fd\u662f\u8981\u5b89\u88c5\u76f8\u5e94\u9a71\u52a8\uff0c\u4f46\u662f\u5982\u679c\u5b89\u88c5\u4e86\u9a71\u52a8\uff0c\u5373\u7528qdebug\u6253\u5370\u51fa\u6765\u663e\u793a\u672c\u5730\u5df2\u6709\u9a71\u52a8\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd8\u662f\u4f1a\u51fa\u73b0\u4e0a\u8ff0\u62a5\u9519\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u7684mysql\u662f64\u4f4d\u7684\uff0c\u90a3\u4e48\u5728qtcreator\u4e2d\u4e5f\u8981\u76f8\u5e94\u4f7f\u752864\u4f4d\u7684\u7f16\u8bd1\u5668\u8fdb\u884c\u7f16\u8bd1\u3002\u5426\u5219\u4f1a\u56e0\u4e3a\u5957\u4ef6\u5bf9\u4e0d\u4e0a\u7684\u539f\u56e0\uff0c\u7f16\u8bd1\u5931\u8d25\u3002\u5c31\u4f1a\u51fa\u73b0\u5982\u4e0a\u62a5\u9519\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"582\" height=\"215\" src=\"https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/8e3d6ee34c03a3ff1273f4e1f54e4bc.png\" alt=\"\" class=\"wp-image-1377\" srcset=\"https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/8e3d6ee34c03a3ff1273f4e1f54e4bc.png 582w, https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/8e3d6ee34c03a3ff1273f4e1f54e4bc-300x111.png 300w, https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/8e3d6ee34c03a3ff1273f4e1f54e4bc-548x202.png 548w\" sizes=\"(max-width: 582px) 100vw, 582px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"381\" height=\"226\" src=\"https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/5ddd8686d13be69fa9277ea113734cc.png\" alt=\"\" class=\"wp-image-1378\" srcset=\"https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/5ddd8686d13be69fa9277ea113734cc.png 381w, https:\/\/www.huangrongzhen.ink\/wp-content\/uploads\/2023\/04\/5ddd8686d13be69fa9277ea113734cc-300x178.png 300w\" sizes=\"(max-width: 381px) 100vw, 381px\" \/><figcaption class=\"wp-element-caption\">\u4e24\u4e2a\u4f4d\u53f7\u4e00\u5b9a\u8981\u5bf9\u4e0a<\/figcaption><\/figure>\n\n\n\n<p>\u5982\u679c\u4f60\u53d1\u73b0\u4f60\u7684Qt\u5f53\u65f6\u5b89\u88c5\u7684\u65f6\u5019\u6ca1\u6709\u4e0b\u8f7d\u76f8\u5e94\u7684\u7f16\u8bd1\u5957\u4ef6<\/p>\n\n\n\n<p>\u90a3\u4e48\u8981\u4e48\u91cd\u88c5\u4e00\u6b21Qt\uff0c\u628a\u7f3a\u5c11\u7684\u5957\u4ef6\u52fe\u9009\u4e0a<\/p>\n\n\n\n<p>\u6216\u8005\u53bb\u4e0b\u8f7d\u5bf9\u5e94\u4f4d\u53f7\u7684mysql<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u5355\u7684\u6d4b\u8bd5\u6570\u636e\u5e93\u8fde\u63a5<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"_links":{"self":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts\/1359"}],"collection":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1359"}],"version-history":[{"count":6,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts\/1359\/revisions"}],"predecessor-version":[{"id":1379,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts\/1359\/revisions\/1379"}],"wp:attachment":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}