{"id":183748,"date":"2024-11-10T07:24:18","date_gmt":"2024-11-09T23:24:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183748\/"},"modified":"2024-11-10T07:24:19","modified_gmt":"2024-11-09T23:24:19","slug":"%e4%bd%bf%e7%94%a8java%e5%b0%81%e8%a3%9d%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%ef%bc%8c%e8%ae%93%e6%95%b8%e6%93%9a%e6%93%8d%e4%bd%9c%e6%9b%b4%e7%b0%a1%e5%96%ae%e9%ab%98%e6%95%88-java-%e5%b0%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183748\/","title":{"rendered":"\u4f7f\u7528Java\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u8b93\u6578\u64da\u64cd\u4f5c\u66f4\u7c21\u55ae\u9ad8\u6548 (java \u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c)"},"content":{"rendered":"<h1 id=\"%e4%bd%bf%e7%94%a8java%e5%b0%81%e8%a3%9d%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%ef%bc%8c%e8%ae%93%e6%95%b8%e6%93%9a%e6%93%8d%e4%bd%9c%e6%9b%b4%e7%b0%a1%e5%96%ae%e9%ab%98%e6%95%88-zYFuuYFfmg\">\u4f7f\u7528Java\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u8b93\u6578\u64da\u64cd\u4f5c\u66f4\u7c21\u55ae\u9ad8\u6548<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u64cd\u4f5c\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u7121\u8ad6\u662f\u4f01\u696d\u7d1a\u61c9\u7528\u9084\u662f\u5c0f\u578b\u9805\u76ee\uff0c\u6578\u64da\u7684\u5b58\u53d6\u548c\u7ba1\u7406\u90fd\u9700\u8981\u9ad8\u6548\u4e14\u7c21\u55ae\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u3002Java\u4f5c\u70ba\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u5f9e\u800c\u63d0\u9ad8\u958b\u767c\u6548\u7387\u548c\u4ee3\u78bc\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n<h2 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id=\"java%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e5%b0%81%e8%a3%9d-zYFuuYFfmg\">Java\u4e2d\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u5c01\u88dd<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u6700\u5e38\u7528\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u65b9\u5f0f\u662f\u901a\u904eJDBC\uff08Java Database Connectivity\uff09\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\u3002<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.PreparedStatement;\nimport java.sql.ResultSet;\nimport java.sql.SQLException;\n\npublic class DatabaseHelper {\n    private String url;\n    private String user;\n    private String password;\n\n    public DatabaseHelper(String url, String user, String password) {\n        this.url = url;\n        this.user = user;\n        this.password = password;\n    }\n\n    private Connection getConnection() throws SQLException {\n        return DriverManager.getConnection(url, user, password);\n    }\n\n    public void insertData(String query, Object... params) {\n        try (Connection conn = getConnection();\n             PreparedStatement pstmt = conn.prepareStatement(query)) {\n            for (int i = 0; i &lt; params.length; i++) {\n                pstmt.setObject(i + 1, params[i]);\n            }\n            pstmt.executeUpdate();\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n\n    public ResultSet fetchData(String query, Object... params) {\n        ResultSet rs = null;\n        try {\n            Connection conn = getConnection();\n            PreparedStatement pstmt = conn.prepareStatement(query);\n            for (int i = 0; i &lt; params.length; i++) {\n                pstmt.setObject(i + 1, params[i]);\n            }\n            rs = pstmt.executeQuery();\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n        return rs;\n    }\n}\n<\/code><\/pre>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e8%aa%aa%e6%98%8e-zYFuuYFfmg\">\u793a\u4f8b\u8aaa\u660e<\/h3>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba<code>DatabaseHelper<\/code>\u7684\u985e\uff0c\u8a72\u985e\u8ca0\u8cac\u7ba1\u7406\u6578\u64da\u5eab\u9023\u63a5\u548c\u64cd\u4f5c\u3002\u5b83\u5305\u542b\u4e86\u5169\u500b\u4e3b\u8981\u65b9\u6cd5\uff1a<code>insertData<\/code>\u548c<code>fetchData<\/code>\u3002\u9019\u4e9b\u65b9\u6cd5\u4f7f\u7528\u4e86<code>PreparedStatement<\/code>\u4f86\u57f7\u884cSQL\u67e5\u8a62\uff0c\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u3002<\/p>\n<h2 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