{"id":61515,"date":"2024-10-13T11:41:14","date_gmt":"2024-10-13T03:41:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61515\/"},"modified":"2024-10-13T11:41:14","modified_gmt":"2024-10-13T03:41:14","slug":"h2%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8a%bd%e6%95%b8%e6%93%9a%e6%95%99%e7%a8%8b%ef%bc%9a%e7%b0%a1%e5%96%ae%e6%98%93%e6%87%82%ef%bc%8c%e5%bf%ab%e9%80%9f%e5%af%a6%e7%8f%be-h2%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61515\/","title":{"rendered":"H2\u6578\u64da\u5eab\u62bd\u6578\u64da\u6559\u7a0b\uff1a\u7c21\u55ae\u6613\u61c2\uff0c\u5feb\u901f\u5be6\u73fe (h2\u6578\u64da\u5eab\u600e\u9ebc\u62bd\u6578\u64da)"},"content":{"rendered":"<h1 id=\"h2%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8a%bd%e6%95%b8%e6%93%9a%e6%95%99%e7%a8%8b%ef%bc%9a%e7%b0%a1%e5%96%ae%e6%98%93%e6%87%82%ef%bc%8c%e5%bf%ab%e9%80%9f%e5%af%a6%e7%8f%be-ImtIYyYFnl\">H2\u6578\u64da\u5eab\u62bd\u6578\u64da\u6559\u7a0b\uff1a\u7c21\u55ae\u6613\u61c2\uff0c\u5feb\u901f\u5be6\u73fe<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u666e\u904d\u3002H2\u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u6b3e\u8f15\u91cf\u7d1a\u7684\u958b\u6e90\u6578\u64da\u5eab\uff0c\u56e0\u5176\u7c21\u55ae\u6613\u7528\u548c\u9ad8\u6548\u6027\u80fd\u800c\u53d7\u5230\u5ee3\u6cdb\u95dc\u6ce8\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5f9eH2\u6578\u64da\u5eab\u4e2d\u62bd\u53d6\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\uff0c\u5e6b\u52a9\u8b80\u8005\u5feb\u901f\u4e0a\u624b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afh2%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-ImtIYyYFnl\">\u4ec0\u9ebc\u662fH2\u6578\u64da\u5eab\uff1f<\/h2>\n<p>H2\u662f\u4e00\u6b3e\u7528Java\u7de8\u5beb\u7684\u958b\u6e90\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff0c\u652f\u6301\u5d4c\u5165\u5f0f\u548c\u4f3a\u670d\u5668\u6a21\u5f0f\u3002\u5b83\u7684\u7279\u9ede\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u8f15\u91cf\u7d1a\uff1aH2\u7684\u5b89\u88dd\u5305\u975e\u5e38\u5c0f\uff0c\u9069\u5408\u5d4c\u5165\u5f0f\u61c9\u7528\u3002<\/li>\n<li>\u9ad8\u6027\u80fd\uff1aH2\u5728\u5167\u5b58\u4e2d\u904b\u884c\u6642\u901f\u5ea6\u975e\u5e38\u5feb\u3002<\/li>\n<li>\u6613\u65bc\u4f7f\u7528\uff1a\u63d0\u4f9b\u4e86\u7c21\u55ae\u7684SQL\u8a9e\u6cd5\uff0c\u65b9\u4fbf\u958b\u767c\u8005\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e9%80%a3%e6%8e%a5h2%e6%95%b8%e6%93%9a%e5%ba%ab-ImtIYyYFnl\">\u5982\u4f55\u9023\u63a5H2\u6578\u64da\u5eab<\/h2>\n<p>\u5728\u958b\u59cb\u62bd\u53d6\u6578\u64da\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u9023\u63a5\u5230H2\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Java\u9023\u63a5H2\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n\npublic class H2Connection {\n    public static void main(String[] args) {\n        String url = \"jdbc:h2:~\/test\"; \/\/ \u6578\u64da\u5eabURL\n        String user = \"sa\"; \/\/ \u9ed8\u8a8d\u7528\u6236\u540d\n        String password = \"\"; \/\/ \u9ed8\u8a8d\u5bc6\u78bc\n\n        try {\n            Connection conn = DriverManager.getConnection(url, user, password);\n            System.out.println(\"\u6210\u529f\u9023\u63a5\u5230H2\u6578\u64da\u5eab\uff01\");\n            \/\/ \u5728\u9019\u88e1\u53ef\u4ee5\u9032\u884c\u6578\u64da\u64cd\u4f5c\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e6%8a%bd%e5%8f%96%e6%95%b8%e6%93%9a%e7%9a%84%e5%9f%ba%e6%9c%acsql%e8%aa%9e%e6%b3%95-ImtIYyYFnl\">\u62bd\u53d6\u6578\u64da\u7684\u57fa\u672cSQL\u8a9e\u6cd5<\/h2>\n<p>\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230H2\u6578\u64da\u5eab\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528SQL\u8a9e\u53e5\u4f86\u62bd\u53d6\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684SQL\u8a9e\u6cd5\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"1-%e6%9f%a5%e8%a9%a2%e6%89%80%e6%9c%89%e6%95%b8%e6%93%9a-ImtIYyYFnl\">1. \u67e5\u8a62\u6240\u6709\u6578\u64da<\/h3>\n<pre><code>SELECT * FROM \u8868\u540d;<\/code><\/pre>\n<h3 id=\"2-%e6%a0%b9%e6%93%9a%e6%a2%9d%e4%bb%b6%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-ImtIYyYFnl\">2. \u6839\u64da\u689d\u4ef6\u67e5\u8a62\u6578\u64da<\/h3>\n<pre><code>SELECT * FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n<h3 id=\"3-%e9%99%90%e5%88%b6%e6%9f%a5%e8%a9%a2%e7%b5%90%e6%9e%9c%e7%9a%84%e6%95%b8%e9%87%8f-ImtIYyYFnl\">3. \u9650\u5236\u67e5\u8a62\u7d50\u679c\u7684\u6578\u91cf<\/h3>\n<pre><code>SELECT * FROM \u8868\u540d LIMIT \u6578\u91cf;<\/code><\/pre>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%be%9eh2%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e6%8a%bd%e5%8f%96%e6%95%b8%e6%93%9a-ImtIYyYFnl\">\u5be6\u969b\u793a\u4f8b\uff1a\u5f9eH2\u6578\u64da\u5eab\u4e2d\u62bd\u53d6\u6578\u64da<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5b8c\u6574\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5f9eH2\u6578\u64da\u5eab\u4e2d\u62bd\u53d6\u6578\u64da\u4e26\u986f\u793a\u5728\u63a7\u5236\u53f0\u4e0a\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 H2DataExtraction {\n    public static void main(String[] args) {\n        String url = \"jdbc:h2:~\/test\";\n        String user = \"sa\";\n        String password = \"\";\n\n        try {\n            Connection conn = DriverManager.getConnection(url, user, password);\n            Statement stmt = conn.createStatement();\n            String sql = \"SELECT * FROM \u8868\u540d\"; \/\/ \u66ff\u63db\u70ba\u4f60\u7684\u8868\u540d\n            ResultSet rs = stmt.executeQuery(sql);\n\n            while (rs.next()) {\n                \/\/ \u5047\u8a2d\u8868\u4e2d\u6709\u4e00\u500b\u540d\u70ba'column1'\u7684\u5217\n                System.out.println(\"Column1: \" + rs.getString(\"column1\"));\n            }\n\n            rs.close();\n            stmt.close();\n            conn.close();\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ImtIYyYFnl\">\u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u5f9eH2\u6578\u64da\u5eab\u4e2d\u62bd\u53d6\u6578\u64da\uff0c\u5305\u62ec\u9023\u63a5\u6578\u64da\u5eab\u7684\u6b65\u9a5f\u3001\u57fa\u672c\u7684SQL\u8a9e\u6cd5\u4ee5\u53ca\u5be6\u969b\u7684\u4ee3\u78bc\u793a\u4f8b\u3002H2\u6578\u64da\u5eab\u56e0\u5176\u8f15\u91cf\u7d1a\u548c\u9ad8\u6548\u6027\u80fd\uff0c\u6210\u70ba\u8a31\u591a\u958b\u767c\u8005\u7684\u9996\u9078\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u96f2\u7aef\u74b0\u5883\u4e2d\u4f7f\u7528H2\u6578\u64da\u5eab\uff0c\u5efa\u8b70\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u4ee5\u4fbf\u7372\u5f97\u66f4\u597d\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2H2\u6578\u64da\u5eab\u62bd\u6578\u64da\u7684\u7c21\u55ae\u6613\u61c2\u6559\u7a0b\uff0c\u5feb\u901f\u638c\u63e1\u6578\u64da\u63d0\u53d6\u6280\u5de7\uff0c\u8f15\u9b06\u5be6\u73fe\u6578\u64da\u64cd\u4f5c\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-61515","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61515","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=61515"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61515\/revisions"}],"predecessor-version":[{"id":61516,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61515\/revisions\/61516"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}