{"id":61909,"date":"2024-10-13T14:39:16","date_gmt":"2024-10-13T06:39:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61909\/"},"modified":"2024-10-13T14:39:16","modified_gmt":"2024-10-13T06:39:16","slug":"java%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%bc%95%e9%ac%86%e9%ab%98%e6%95%88-java%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%81%e8%a3%9d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61909\/","title":{"rendered":"Java\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u8f15\u9b06\u9ad8\u6548 (java\u6578\u64da\u5eab\u5c01\u88dd)"},"content":{"rendered":"<h1 id=\"java%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%bc%95%e9%ac%86%e9%ab%98%e6%95%88-iEBiWTtiJr\">Java\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u8f15\u9b06\u9ad8\u6548<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u64cd\u4f5c\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002Java\u4f5c\u70ba\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u5f0f\u4f86\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u70ba\u4e86\u63d0\u9ad8\u958b\u767c\u6548\u7387\u548c\u4ee3\u78bc\u53ef\u7dad\u8b77\u6027\uff0c\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\u6210\u70ba\u4e86\u4e00\u7a2e\u6d41\u884c\u7684\u505a\u6cd5\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Java\u4e2d\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u4ee5\u9054\u5230\u8f15\u9b06\u9ad8\u6548\u7684\u6548\u679c\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e8%a6%81%e5%b0%81%e8%a3%9d%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%ef%bc%9f-iEBiWTtiJr\">\u70ba\u4ec0\u9ebc\u8981\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\uff1f<\/h2>\n<p>\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u4e3b\u8981\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u4ee3\u78bc\u91cd\u7528\u6027\uff1a<\/strong>\u901a\u904e\u5c01\u88dd\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u91cd\u8907\u4f7f\u7528\u76f8\u540c\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u4ee3\u78bc\uff0c\u6e1b\u5c11\u91cd\u8907\u5de5\u4f5c\u3002<\/li>\n<li><strong>\u53ef\u7dad\u8b77\u6027\uff1a<\/strong>\u7576\u6578\u64da\u5eab\u7d50\u69cb\u6216\u64cd\u4f5c\u908f\u8f2f\u767c\u751f\u8b8a\u5316\u6642\uff0c\u53ea\u9700\u4fee\u6539\u5c01\u88dd\u7684\u4ee3\u78bc\uff0c\u800c\u4e0d\u5fc5\u5728\u6574\u500b\u61c9\u7528\u4e2d\u9032\u884c\u4fee\u6539\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u5c01\u88dd\u53ef\u4ee5\u96c6\u4e2d\u8655\u7406\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u7684\u932f\u8aa4\uff0c\u5f9e\u800c\u63d0\u9ad8\u4ee3\u78bc\u7684\u7a69\u5b9a\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"java%e4%b8%ad%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-iEBiWTtiJr\">Java\u4e2d\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u57fa\u672c\u6b65\u9a5f<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u8207\u6578\u64da\u5eab\u7684\u4ea4\u4e92\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u52a0\u8f09\u6578\u64da\u5eab\u9a45\u52d5\u3002<\/li>\n<li>\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5\u3002<\/li>\n<li>\u5275\u5efa\u548c\u57f7\u884cSQL\u8a9e\u53e5\u3002<\/li>\n<li>\u8655\u7406\u7d50\u679c\u96c6\u3002<\/li>\n<li>\u95dc\u9589\u9023\u63a5\u3002<\/li>\n<\/ol>\n<h2 id=\"%e5%b0%81%e8%a3%9d%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e7%9a%84%e7%a4%ba%e4%be%8b-iEBiWTtiJr\">\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728Java\u4e2d\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\uff1a<\/p>\n<pre><code>\nimport 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    public Connection getConnection() throws SQLException {\n        return DriverManager.getConnection(url, user, password);\n    }\n\n    public void executeUpdate(String sql) {\n        try (Connection conn = getConnection();\n             PreparedStatement pstmt = conn.prepareStatement(sql)) {\n            pstmt.executeUpdate();\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n\n    public ResultSet executeQuery(String sql) {\n        try {\n            Connection conn = getConnection();\n            PreparedStatement pstmt = conn.prepareStatement(sql);\n            return pstmt.executeQuery();\n        } catch (SQLException e) {\n            e.printStackTrace();\n            return null;\n        }\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba <code>DatabaseHelper<\/code> \u7684\u985e\uff0c\u8a72\u985e\u5c01\u88dd\u4e86\u6578\u64da\u5eab\u7684\u9023\u63a5\u548c\u64cd\u4f5c\u3002\u901a\u904e\u9019\u7a2e\u65b9\u5f0f\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u57f7\u884c\u66f4\u65b0\u548c\u67e5\u8a62\u64cd\u4f5c\uff0c\u800c\u4e0d\u5fc5\u91cd\u8907\u7de8\u5beb\u9023\u63a5\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-iEBiWTtiJr\">\u4f7f\u7528\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528 <code>DatabaseHelper<\/code> \u985e\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\npublic class Main {\n    public static void main(String[] args) {\n        DatabaseHelper dbHelper = new DatabaseHelper(\"jdbc:mysql:\/\/localhost:3306\/mydb\", \"user\", \"password\");\n\n        \/\/ \u63d2\u5165\u6578\u64da\n        String insertSQL = \"INSERT INTO users (name, email) VALUES ('John Doe', 'john@example.com')\";\n        dbHelper.executeUpdate(insertSQL);\n\n        \/\/ \u67e5\u8a62\u6578\u64da\n        String querySQL = \"SELECT * FROM users\";\n        ResultSet rs = dbHelper.executeQuery(querySQL);\n        try {\n            while (rs != null &amp;&amp; rs.next()) {\n                System.out.println(\"User: \" + rs.getString(\"name\") + \", Email: \" + rs.getString(\"email\"));\n            }\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-iEBiWTtiJr\">\u7d50\u8ad6<\/h2>\n<p>\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\u4e0d\u50c5\u80fd\u63d0\u9ad8\u958b\u767c\u6548\u7387\uff0c\u9084\u80fd\u589e\u5f37\u4ee3\u78bc\u7684\u53ef\u7dad\u8b77\u6027\u548c\u7a69\u5b9a\u6027\u3002\u901a\u904e\u7c21\u55ae\u7684\u5c01\u88dd\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5c08\u6ce8\u65bc\u696d\u52d9\u908f\u8f2f\uff0c\u800c\u4e0d\u5fc5\u64d4\u5fc3\u5e95\u5c64\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u7d30\u7bc0\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u64f4\u5c55\uff0c\u9019\u7a2e\u65b9\u6cd5\u5c07\u986f\u5f97\u5c24\u70ba\u91cd\u8981\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\u7684Java\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u6578\u64da\u5eab\u548c\u61c9\u7528\u7a0b\u5e8f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Java\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853\uff0c\u5be6\u73fe\u9ad8\u6548\u3001\u7c21\u4fbf\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\u8207\u4ee3\u78bc\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-61909","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61909","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=61909"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61909\/revisions"}],"predecessor-version":[{"id":61910,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61909\/revisions\/61910"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61909"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61909"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61909"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}