{"id":165959,"date":"2024-11-05T14:17:21","date_gmt":"2024-11-05T06:17:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/165959\/"},"modified":"2024-11-05T14:17:22","modified_gmt":"2024-11-05T06:17:22","slug":"%e5%bf%ab%e9%80%9f%e9%ab%98%e6%95%88%ef%bc%9a%e4%bd%bf%e7%94%a8qt%e5%b0%87%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%8e%e5%87%ba-%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%8e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/165959\/","title":{"rendered":"\u5feb\u901f\u9ad8\u6548\uff1a\u4f7f\u7528qt\u5c07\u5167\u5b58\u6578\u64da\u5eab\u5c0e\u51fa (\u5167\u5b58\u6578\u64da\u5eab\u5c0e\u51fa qt)"},"content":{"rendered":"<h1 id=\"%e5%bf%ab%e9%80%9f%e9%ab%98%e6%95%88%ef%bc%9a%e4%bd%bf%e7%94%a8qt%e5%b0%87%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%8e%e5%87%ba-qJpAplsCoh\">\u5feb\u901f\u9ad8\u6548\uff1a\u4f7f\u7528Qt\u5c07\u5167\u5b58\u6578\u64da\u5eab\u5c0e\u51fa<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u7684\u5b58\u5132\u548c\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u5167\u5b58\u6578\u64da\u5eab\u56e0\u5176\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\u800c\u53d7\u5230\u5ee3\u6cdb\u95dc\u6ce8\u3002\u4f7f\u7528Qt\u6846\u67b6\u4f86\u5c0e\u51fa\u5167\u5b58\u6578\u64da\u5eab\u7684\u6578\u64da\uff0c\u4e0d\u50c5\u53ef\u4ee5\u63d0\u9ad8\u958b\u767c\u6548\u7387\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u5b89\u5168\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Qt\u5c07\u5167\u5b58\u6578\u64da\u5eab\u5c0e\u51fa\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-qJpAplsCoh\">\u4ec0\u9ebc\u662f\u5167\u5b58\u6578\u64da\u5eab\uff1f<\/h2>\n<p>\u5167\u5b58\u6578\u64da\u5eab\u662f\u4e00\u7a2e\u5c07\u6578\u64da\u5b58\u5132\u5728\u5167\u5b58\u4e2d\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u3002\u8207\u50b3\u7d71\u7684\u78c1\u789f\u6578\u64da\u5eab\u76f8\u6bd4\uff0c\u5167\u5b58\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u66f4\u5feb\u7684\u6578\u64da\u8b80\u53d6\u548c\u5beb\u5165\u901f\u5ea6\uff0c\u56e0\u70ba\u5b83\u5011\u4e0d\u9700\u8981\u9032\u884c\u78c1\u789fI\/O\u64cd\u4f5c\u3002\u9019\u4f7f\u5f97\u5167\u5b58\u6578\u64da\u5eab\u7279\u5225\u9069\u5408\u9700\u8981\u9ad8\u6027\u80fd\u548c\u4f4e\u5ef6\u9072\u7684\u61c9\u7528\u5834\u666f\uff0c\u4f8b\u5982\u5373\u6642\u5206\u6790\u548c\u9ad8\u983b\u4ea4\u6613\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87qt%ef%bc%9f-qJpAplsCoh\">\u70ba\u4ec0\u9ebc\u9078\u64c7Qt\uff1f<\/h2>\n<p>Qt\u662f\u4e00\u500b\u8de8\u5e73\u53f0\u7684\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u6846\u67b6\uff0c\u63d0\u4f9b\u4e86\u8c50\u5bcc\u7684\u5eab\u548c\u5de5\u5177\u4f86\u7c21\u5316\u958b\u767c\u904e\u7a0b\u3002\u4f7f\u7528Qt\u9032\u884c\u5167\u5b58\u6578\u64da\u5eab\u7684\u5c0e\u51fa\u6709\u4ee5\u4e0b\u5e7e\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u8de8\u5e73\u53f0\u652f\u6301\uff1a<\/strong>Qt\u652f\u6301\u591a\u7a2e\u64cd\u4f5c\u7cfb\u7d71\uff0c\u5305\u62ecWindows\u3001Linux\u548cmacOS\uff0c\u9019\u4f7f\u5f97\u958b\u767c\u8005\u53ef\u4ee5\u5728\u4e0d\u540c\u5e73\u53f0\u4e0a\u8f15\u9b06\u90e8\u7f72\u61c9\u7528\u3002<\/li>\n<li><strong>\u5f37\u5927\u7684\u6578\u64da\u5eab\u652f\u6301\uff1a<\/strong>Qt\u63d0\u4f9b\u4e86\u5c0d\u591a\u7a2e\u6578\u64da\u5eab\u7684\u652f\u6301\uff0c\u5305\u62ecSQLite\u3001MySQL\u548cPostgreSQL\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6613\u7528\u7684API\uff1a<\/strong>Qt\u7684API\u8a2d\u8a08\u7c21\u6f54\u660e\u4e86\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5feb\u901f\u4e0a\u624b\uff0c\u6e1b\u5c11\u5b78\u7fd2\u66f2\u7dda\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%b0%8e%e5%87%ba%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%ad%a5%e9%a9%9f-qJpAplsCoh\">\u5c0e\u51fa\u5167\u5b58\u6578\u64da\u5eab\u7684\u6b65\u9a5f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528Qt\u5c0e\u51fa\u5167\u5b58\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%89%b5%e5%bb%ba%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab-qJpAplsCoh\">1. \u5275\u5efa\u5167\u5b58\u6578\u64da\u5eab<\/h3>\n<pre><code>\n#include &lt;QSqlDatabase&gt;\n#include &lt;QSqlQuery&gt;\n\nQSqlDatabase db = QSqlDatabase::addDatabase(\"QSQLITE\", \"memory\");\ndb.setDatabaseName(\":memory:\");\nif (!db.open()) {\n    qDebug() &lt;&lt; \"\u7121\u6cd5\u6253\u958b\u5167\u5b58\u6578\u64da\u5eab\";\n}\n<\/code><\/pre>\n<h3 id=\"2-%e5%89%b5%e5%bb%ba%e8%a1%a8%e4%b8%a6%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-qJpAplsCoh\">2. \u5275\u5efa\u8868\u4e26\u63d2\u5165\u6578\u64da<\/h3>\n<pre><code>\nQSqlQuery query(db);\nquery.exec(\"CREATE TABLE users (id INTEGER PRIMARY KEY, name TEXT)\");\nquery.exec(\"INSERT INTO users (name) VALUES ('Alice')\");\nquery.exec(\"INSERT INTO users (name) VALUES ('Bob')\");\n<\/code><\/pre>\n<h3 id=\"3-%e5%b0%87%e6%95%b8%e6%93%9a%e5%b0%8e%e5%87%ba%e5%88%b0%e6%96%87%e4%bb%b6-qJpAplsCoh\">3. \u5c07\u6578\u64da\u5c0e\u51fa\u5230\u6587\u4ef6<\/h3>\n<p>\u5c0e\u51fa\u6578\u64da\u7684\u5e38\u898b\u65b9\u6cd5\u662f\u5c07\u5176\u5beb\u5165CSV\u6587\u4ef6\u3002\u4ee5\u4e0b\u662f\u5c07\u5167\u5b58\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u5c0e\u51fa\u5230CSV\u6587\u4ef6\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n#include &lt;QFile&gt;\n#include &lt;QTextStream&gt;\n\nQFile file(\"output.csv\");\nif (file.open(QIODevice::WriteOnly | QIODevice::Text)) {\n    QTextStream out(&amp;file);\n    QSqlQuery query(\"SELECT * FROM users\", db);\n    while (query.next()) {\n        out &lt;&lt; query.value(0).toString() &lt;&lt; \",\" &lt;&lt; query.value(1).toString() &lt;&lt; \"n\";\n    }\n    file.close();\n}\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-qJpAplsCoh\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u5c0e\u51fa\u5167\u5b58\u6578\u64da\u5eab\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u6578\u64da\u5eab\u5728\u5c0e\u51fa\u904e\u7a0b\u4e2d\u4fdd\u6301\u958b\u555f\u72c0\u614b\uff0c\u4ee5\u907f\u514d\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<li>\u8003\u616e\u6578\u64da\u7684\u683c\u5f0f\u548c\u7d50\u69cb\uff0c\u9078\u64c7\u5408\u9069\u7684\u6587\u4ef6\u683c\u5f0f\u4ee5\u4fbf\u65bc\u5f8c\u7e8c\u7684\u6578\u64da\u8655\u7406\u3002<\/li>\n<li>\u5728\u5c0e\u51fa\u5927\u91cf\u6578\u64da\u6642\uff0c\u6ce8\u610f\u6027\u80fd\u554f\u984c\uff0c\u53ef\u80fd\u9700\u8981\u9032\u884c\u5206\u6279\u5c0e\u51fa\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-qJpAplsCoh\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528Qt\u5c07\u5167\u5b58\u6578\u64da\u5eab\u5c0e\u51fa\u662f\u4e00\u500b\u9ad8\u6548\u4e14\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u9069\u5408\u5404\u7a2e\u61c9\u7528\u5834\u666f\u3002\u901a\u904e\u7c21\u55ae\u7684\u6b65\u9a5f\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5c07\u5167\u5b58\u4e2d\u7684\u6578\u64da\u5c0e\u51fa\u5230\u6587\u4ef6\u4e2d\uff0c\u5f9e\u800c\u5be6\u73fe\u6578\u64da\u7684\u6301\u4e45\u5316\u548c\u5171\u4eab\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684\u61c9\u7528\uff0c\u4eab\u53d7\u66f4\u5feb\u7684\u6578\u64da\u8655\u7406\u901f\u5ea6\u548c\u66f4\u9ad8\u7684\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528Qt\u5feb\u901f\u9ad8\u6548\u5730\u5c0e\u51fa\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u7c21\u5316\u958b\u767c\u6d41\u7a0b\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-165959","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165959","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=165959"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165959\/revisions"}],"predecessor-version":[{"id":165960,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165959\/revisions\/165960"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=165959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=165959"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=165959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}