{"id":174939,"date":"2024-11-08T01:01:35","date_gmt":"2024-11-07T17:01:35","guid":{"rendered":"https:\/\/server.hk\/cnblog\/174939\/"},"modified":"2024-11-08T01:01:36","modified_gmt":"2024-11-07T17:01:36","slug":"%e5%a6%82%e4%bd%95%e8%bc%95%e9%ac%86%e5%ad%b8%e6%9c%83%e6%9f%a5%e7%9c%8bjava%e4%bb%a3%e7%a2%bc%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab-%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8bjava%e4%bb%a3%e7%a2%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/174939\/","title":{"rendered":"\u5982\u4f55\u8f15\u9b06\u5b78\u6703\u67e5\u770bJava\u4ee3\u78bc\u4e2d\u7684\u6578\u64da\u5eab (\u5982\u4f55\u67e5\u770bjava\u4ee3\u78bc\u7684\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e8%bc%95%e9%ac%86%e5%ad%b8%e6%9c%83%e6%9f%a5%e7%9c%8bjava%e4%bb%a3%e7%a2%bc%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab-lWpEMglSHW\">\u5982\u4f55\u8f15\u9b06\u5b78\u6703\u67e5\u770bJava\u4ee3\u78bc\u4e2d\u7684\u6578\u64da\u5eab<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0cJava\u662f\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5c24\u5176\u662f\u5728\u4f01\u696d\u7d1a\u61c9\u7528\u4e2d\u3002\u8a31\u591aJava\u61c9\u7528\u7a0b\u5e8f\u90fd\u9700\u8981\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\uff0c\u56e0\u6b64\u5b78\u6703\u5982\u4f55\u67e5\u770bJava\u4ee3\u78bc\u4e2d\u7684\u6578\u64da\u5eab\u662f\u6bcf\u4f4d\u958b\u767c\u8005\u5fc5\u5099\u7684\u6280\u80fd\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u8f15\u9b06\u5b78\u6703\u67e5\u770bJava\u4ee3\u78bc\u4e2d\u7684\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6280\u5de7\u3002<\/p>\n<h2 id=\"%e7%90%86%e8%a7%a3java%e8%88%87%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e9%97%9c%e4%bf%82-lWpEMglSHW\">\u7406\u89e3Java\u8207\u6578\u64da\u5eab\u7684\u95dc\u4fc2<\/h2>\n<p>Java\u61c9\u7528\u7a0b\u5e8f\u901a\u5e38\u4f7f\u7528Java Database Connectivity\uff08JDBC\uff09\u4f86\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002JDBC\u662f\u4e00\u500bAPI\uff0c\u5141\u8a31Java\u7a0b\u5e8f\u9023\u63a5\u5230\u5404\u7a2e\u6578\u64da\u5eab\uff0c\u57f7\u884cSQL\u67e5\u8a62\uff0c\u4e26\u8655\u7406\u7d50\u679c\u96c6\u3002\u4e86\u89e3JDBC\u7684\u57fa\u672c\u6982\u5ff5\u662f\u67e5\u770bJava\u4ee3\u78bc\u4e2d\u6578\u64da\u5eab\u7684\u7b2c\u4e00\u6b65\u3002<\/p>\n<h3 id=\"jdbc%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%b5%84%e4%bb%b6-lWpEMglSHW\">JDBC\u7684\u57fa\u672c\u7d44\u4ef6<\/h3>\n<ul>\n<li><strong>DriverManager\uff1a<\/strong>\u8ca0\u8cac\u7ba1\u7406\u6578\u64da\u5eab\u9a45\u52d5\u7a0b\u5e8f\u3002<\/li>\n<li><strong>Connection\uff1a<\/strong>\u8868\u793a\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002<\/li>\n<li><strong>Statement\uff1a<\/strong>\u7528\u65bc\u57f7\u884cSQL\u67e5\u8a62\u3002<\/li>\n<li><strong>ResultSet\uff1a<\/strong>\u8868\u793a\u67e5\u8a62\u7d50\u679c\u7684\u96c6\u5408\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9f%a5%e7%9c%8bjava%e4%bb%a3%e7%a2%bc%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-lWpEMglSHW\">\u67e5\u770bJava\u4ee3\u78bc\u4e2d\u7684\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n<p>\u8981\u67e5\u770bJava\u4ee3\u78bc\u4e2d\u7684\u6578\u64da\u5eab\u9023\u63a5\uff0c\u9996\u5148\u9700\u8981\u627e\u5230\u5275\u5efa\u9023\u63a5\u7684\u4ee3\u78bc\u6bb5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n\npublic class DatabaseConnection {\n    public static void main(String[] args) {\n        String url = \"jdbc:mysql:\/\/localhost:3306\/mydatabase\";\n        String user = \"root\";\n        String password = \"password\";\n\n        try {\n            Connection connection = DriverManager.getConnection(url, user, password);\n            System.out.println(\"\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff01\");\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528DriverManager\u4f86\u7372\u53d6\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cURL\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\u662f\u9023\u63a5\u6578\u64da\u5eab\u6240\u9700\u7684\u57fa\u672c\u4fe1\u606f\u3002\u9019\u4e9b\u4fe1\u606f\u901a\u5e38\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u9032\u884c\u7ba1\u7406\uff0c\u4ee5\u4fbf\u65bc\u7dad\u8b77\u548c\u4fee\u6539\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a-lWpEMglSHW\">\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da<\/h2>\n<p>\u4e00\u65e6\u5efa\u7acb\u4e86\u6578\u64da\u5eab\u9023\u63a5\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528Statement\u5c0d\u8c61\u4f86\u57f7\u884cSQL\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u67e5\u8a62\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.ResultSet;\nimport java.sql.SQLException;\nimport java.sql.Statement;\n\npublic class QueryDatabase {\n    public static void main(String[] args) {\n        String url = \"jdbc:mysql:\/\/localhost:3306\/mydatabase\";\n        String user = \"root\";\n        String password = \"password\";\n\n        try {\n            Connection connection = DriverManager.getConnection(url, user, password);\n            Statement statement = connection.createStatement();\n            String sql = \"SELECT * FROM users\";\n            ResultSet resultSet = statement.executeQuery(sql);\n\n            while (resultSet.next()) {\n                System.out.println(\"\u7528\u6236ID: \" + resultSet.getInt(\"id\"));\n                System.out.println(\"\u7528\u6236\u540d: \" + resultSet.getString(\"username\"));\n            }\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528Statement\u5c0d\u8c61\u57f7\u884c\u4e86\u4e00\u500b\u7c21\u55ae\u7684SELECT\u67e5\u8a62\uff0c\u4e26\u901a\u904eResultSet\u5c0d\u8c61\u4f86\u904d\u6b77\u67e5\u8a62\u7d50\u679c\u3002\u9019\u6a23\uff0c\u6211\u5011\u5c31\u80fd\u5920\u67e5\u770b\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u3002<\/p>\n<h2 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id=\"%e7%b8%bd%e7%b5%90-lWpEMglSHW\">\u7e3d\u7d50<\/h2>\n<p>\u5b78\u6703\u67e5\u770bJava\u4ee3\u78bc\u4e2d\u7684\u6578\u64da\u5eab\u662f\u4e00\u9805\u91cd\u8981\u7684\u6280\u80fd\uff0c\u7121\u8ad6\u662f\u4f7f\u7528JDBC\u9084\u662fORM\u6846\u67b6\uff0c\u7406\u89e3\u6578\u64da\u5eab\u7684\u57fa\u672c\u64cd\u4f5c\u90fd\u662f\u958b\u767c\u8005\u5fc5\u9808\u638c\u63e1\u7684\u3002\u901a\u904e\u672c\u6587\u7684\u4ecb\u7d39\uff0c\u76f8\u4fe1\u60a8\u5df2\u7d93\u5c0d\u5982\u4f55\u67e5\u770bJava\u4ee3\u78bc\u4e2d\u7684\u6578\u64da\u5eab\u6709\u4e86\u66f4\u6df1\u5165\u7684\u4e86\u89e3\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\u90e8\u7f72\u60a8\u7684Java\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> 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