{"id":188568,"date":"2024-11-11T23:52:28","date_gmt":"2024-11-11T15:52:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/188568\/"},"modified":"2024-11-11T23:52:29","modified_gmt":"2024-11-11T15:52:29","slug":"%e6%8e%a2%e7%b4%a2java-jdbc%e9%a9%85%e5%8b%95%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%8c%87%e5%8d%97-java%e7%9a%84jdbc%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/188568\/","title":{"rendered":"\u63a2\u7d22Java JDBC\u9a45\u52d5\uff1a\u6578\u64da\u5eab\u64cd\u4f5c\u6307\u5357 (java\u7684jdbc\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e6%8e%a2%e7%b4%a2java-jdbc%e9%a9%85%e5%8b%95%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%8c%87%e5%8d%97-RqzdgXHQIc\">\u63a2\u7d22Java JDBC\u9a45\u52d5\uff1a\u6578\u64da\u5eab\u64cd\u4f5c\u6307\u5357<\/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\u3002Java\u4f5c\u70ba\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86Java Database Connectivity\uff08JDBC\uff09API\uff0c\u9019\u662f\u4e00\u500b\u7528\u65bc\u9023\u63a5\u548c\u64cd\u4f5c\u5404\u7a2e\u6578\u64da\u5eab\u7684\u6a19\u6e96\u63a5\u53e3\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eJava JDBC\u9a45\u52d5\u7684\u57fa\u672c\u6982\u5ff5\u3001\u4f7f\u7528\u65b9\u6cd5\u4ee5\u53ca\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afjdbc%ef%bc%9f-RqzdgXHQIc\">\u4ec0\u9ebc\u662fJDBC\uff1f<\/h2>\n<p>JDBC\u662f\u4e00\u500bJava 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\u901a\u904eODBC\u9a45\u52d5\u9023\u63a5\u6578\u64da\u5eab\uff0c\u6027\u80fd\u8f03\u5dee\uff0c\u5df2\u4e0d\u518d\u63a8\u85a6\u4f7f\u7528\u3002<\/li>\n<li><strong>\u985e\u578b2\uff1a\u672c\u5730API\u9a45\u52d5<\/strong> &#8211; \u4f7f\u7528\u672c\u5730\u6578\u64da\u5eabAPI\uff0c\u9700\u5b89\u88dd\u672c\u5730\u5eab\uff0c\u79fb\u690d\u6027\u5dee\u3002<\/li>\n<li><strong>\u985e\u578b3\uff1a\u7db2\u7d61\u5354\u8b70\u9a45\u52d5<\/strong> &#8211; \u901a\u904e\u4e2d\u9593\u5c64\u670d\u52d9\u5668\u9023\u63a5\u6578\u64da\u5eab\uff0c\u9069\u5408\u5206\u4f48\u5f0f\u61c9\u7528\u3002<\/li>\n<li><strong>\u985e\u578b4\uff1a\u7d14Java\u9a45\u52d5<\/strong> &#8211; \u5b8c\u5168\u7528Java\u7de8\u5beb\uff0c\u7121\u9700\u5b89\u88dd\u5176\u4ed6\u5eab\uff0c\u6700\u70ba\u5e38\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8jdbc%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c-RqzdgXHQIc\">\u5982\u4f55\u4f7f\u7528JDBC\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c<\/h2>\n<p>\u4f7f\u7528JDBC\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u57fa\u672c\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li><strong>\u52a0\u8f09\u9a45\u52d5\u7a0b\u5e8f\uff1a<\/strong>\u4f7f\u7528Class.forName()\u65b9\u6cd5\u52a0\u8f09\u6240\u9700\u7684JDBC\u9a45\u52d5\u3002<\/li>\n<li><strong>\u5efa\u7acb\u9023\u63a5\uff1a<\/strong>\u4f7f\u7528DriverManager.getConnection()\u65b9\u6cd5\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002<\/li>\n<li><strong>\u5275\u5efa\u8a9e\u53e5\u5c0d\u8c61\uff1a<\/strong>\u4f7f\u7528Connection.createStatement()\u6216PreparedStatement\u4f86\u5275\u5efaSQL\u8a9e\u53e5\u3002<\/li>\n<li><strong>\u57f7\u884c\u67e5\u8a62\uff1a<\/strong>\u4f7f\u7528executeQuery()\u6216executeUpdate()\u65b9\u6cd5\u57f7\u884cSQL\u8a9e\u53e5\u3002<\/li>\n<li><strong>\u8655\u7406\u7d50\u679c\u96c6\uff1a<\/strong>\u5c0d\u65bc\u67e5\u8a62\u7d50\u679c\uff0c\u4f7f\u7528ResultSet\u4f86\u8655\u7406\u8fd4\u56de\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u95dc\u9589\u9023\u63a5\uff1a<\/strong>\u6700\u5f8c\uff0c\u95dc\u9589ResultSet\u3001Statement\u548cConnection\u4ee5\u91cb\u653e\u8cc7\u6e90\u3002<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-RqzdgXHQIc\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.ResultSet;\nimport java.sql.Statement;\n\npublic class JdbcExample {\n    public static void main(String[] args) {\n        Connection connection = null;\n        Statement statement = null;\n        ResultSet resultSet = null;\n\n        try {\n            \/\/ \u52a0\u8f09\u9a45\u52d5\u7a0b\u5e8f\n            Class.forName(\"com.mysql.cj.jdbc.Driver\");\n            \/\/ \u5efa\u7acb\u9023\u63a5\n            connection = DriverManager.getConnection(\"jdbc:mysql:\/\/localhost:3306\/testdb\", \"username\", \"password\");\n            \/\/ \u5275\u5efa\u8a9e\u53e5\u5c0d\u8c61\n            statement = connection.createStatement();\n            \/\/ \u57f7\u884c\u67e5\u8a62\n            resultSet = statement.executeQuery(\"SELECT * FROM users\");\n\n            \/\/ \u8655\u7406\u7d50\u679c\u96c6\n            while (resultSet.next()) {\n                System.out.println(\"User ID: \" + resultSet.getInt(\"id\"));\n                System.out.println(\"User Name: \" + resultSet.getString(\"name\"));\n            }\n        } catch (Exception e) {\n            e.printStackTrace();\n        } finally {\n            \/\/ \u95dc\u9589\u9023\u63a5\n            try {\n                if (resultSet != null) resultSet.close();\n                if (statement != null) statement.close();\n                if (connection != null) connection.close();\n            } catch (Exception e) {\n                e.printStackTrace();\n            }\n        }\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-RqzdgXHQIc\">\u7e3d\u7d50<\/h2>\n<p>Java 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JDBC\u9a45\u52d5\u7684\u5168\u9762\u6307\u5357\uff0c\u5b78\u7fd2\u5982\u4f55\u9ad8\u6548\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u63d0\u5347\u4f60\u7684Java\u958b\u767c\u6280\u80fd\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-188568","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188568","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=188568"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188568\/revisions"}],"predecessor-version":[{"id":188569,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188568\/revisions\/188569"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=188568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=188568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=188568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}