{"id":61923,"date":"2024-10-13T14:45:16","date_gmt":"2024-10-13T06:45:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61923\/"},"modified":"2024-10-13T14:45:16","modified_gmt":"2024-10-13T06:45:16","slug":"java%e6%8a%80%e8%a1%93%e8%bc%95%e9%ac%86%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e5%af%a6%e7%8f%be%e5%b0%8f%e7%a8%8b%e5%ba%8f-java%e5%b0%8f%e7%a8%8b%e5%ba%8f%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61923\/","title":{"rendered":"Java\u6280\u8853\u8f15\u9b06\u9023\u63a5\u6578\u64da\u5eab\u5be6\u73fe\u5c0f\u7a0b\u5e8f (java\u5c0f\u7a0b\u5e8f\u9023\u63a5\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"java%e6%8a%80%e8%a1%93%e8%bc%95%e9%ac%86%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e5%af%a6%e7%8f%be%e5%b0%8f%e7%a8%8b%e5%ba%8f-zNltbdCMUV\">Java\u6280\u8853\u8f15\u9b06\u9023\u63a5\u6578\u64da\u5eab\u5be6\u73fe\u5c0f\u7a0b\u5e8f<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0cJava\u4f5c\u70ba\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u56e0\u5176\u7a69\u5b9a\u6027\u548c\u53ef\u64f4\u5c55\u6027\u800c\u53d7\u5230\u958b\u767c\u8005\u7684\u9752\u775e\u3002\u7279\u5225\u662f\u5728\u958b\u767c\u5c0f\u7a0b\u5e8f\u6642\uff0cJava\u6280\u8853\u80fd\u5920\u8f15\u9b06\u5730\u9023\u63a5\u6578\u64da\u5eab\uff0c\u5be6\u73fe\u6578\u64da\u7684\u5b58\u53d6\u548c\u7ba1\u7406\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Java\u9023\u63a5\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"java%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-zNltbdCMUV\">Java\u9023\u63a5\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Java\u901a\u904eJDBC\uff08Java Database Connectivity\uff09API\u4f86\u5be6\u73fe\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002JDBC\u662f\u4e00\u7d44API\uff0c\u5141\u8a31Java\u61c9\u7528\u7a0b\u5e8f\u8207\u5404\u7a2e\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u4f7f\u7528JDBC\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u57f7\u884cSQL\u67e5\u8a62\u3001\u66f4\u65b0\u6578\u64da\u4ee5\u53ca\u8655\u7406\u7d50\u679c\u96c6\u3002<\/p>\n<h2 id=\"%e6%ba%96%e5%82%99%e5%b7%a5%e4%bd%9c-zNltbdCMUV\">\u6e96\u5099\u5de5\u4f5c<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u5b89\u88ddJava\u958b\u767c\u5de5\u5177\u5305\uff08JDK\uff09\u3002<\/li>\n<li>\u9078\u64c7\u4e26\u5b89\u88dd\u4e00\u500b\u6578\u64da\u5eab\uff0c\u4f8b\u5982MySQL\u6216PostgreSQL\u3002<\/li>\n<li>\u4e0b\u8f09\u76f8\u61c9\u7684JDBC\u9a45\u52d5\u7a0b\u5e8f\uff0c\u4e26\u5c07\u5176\u6dfb\u52a0\u5230\u60a8\u7684\u9805\u76ee\u4e2d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%ad%a5%e9%a9%9f-zNltbdCMUV\">\u9023\u63a5\u6578\u64da\u5eab\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"1-%e5%8a%a0%e8%bc%89jdbc%e9%a9%85%e5%8b%95%e7%a8%8b%e5%ba%8f-zNltbdCMUV\">1. \u52a0\u8f09JDBC\u9a45\u52d5\u7a0b\u5e8f<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u52a0\u8f09JDBC\u9a45\u52d5\u7a0b\u5e8f\u3002\u4ee5\u4e0b\u662f\u52a0\u8f09MySQL\u9a45\u52d5\u7a0b\u5e8f\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>Class.forName(\"com.mysql.cj.jdbc.Driver\");<\/code><\/pre>\n<h3 id=\"2-%e5%bb%ba%e7%ab%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-zNltbdCMUV\">2. \u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u4f7f\u7528DriverManager\u4f86\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\uff1a<\/p>\n<pre><code>String url = \"jdbc:mysql:\/\/localhost:3306\/your_database\";\nString user = \"your_username\";\nString password = \"your_password\";\n\nConnection connection = DriverManager.getConnection(url, user, password);<\/code><\/pre>\n<h3 id=\"3-%e5%9f%b7%e8%a1%8csql%e6%9f%a5%e8%a9%a2-zNltbdCMUV\">3. \u57f7\u884cSQL\u67e5\u8a62<\/h3>\n<p>\u4e00\u65e6\u9023\u63a5\u6210\u529f\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528Statement\u6216PreparedStatement\u4f86\u57f7\u884cSQL\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528PreparedStatement\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>String sql = \"SELECT * FROM your_table WHERE id = ?\";\nPreparedStatement preparedStatement = connection.prepareStatement(sql);\npreparedStatement.setInt(1, 1);\nResultSet resultSet = preparedStatement.executeQuery();<\/code><\/pre>\n<h3 id=\"4-%e8%99%95%e7%90%86%e7%b5%90%e6%9e%9c%e9%9b%86-zNltbdCMUV\">4. \u8655\u7406\u7d50\u679c\u96c6<\/h3>\n<p>\u57f7\u884c\u67e5\u8a62\u5f8c\uff0c\u60a8\u53ef\u4ee5\u901a\u904eResultSet\u4f86\u8655\u7406\u67e5\u8a62\u7d50\u679c\uff1a<\/p>\n<pre><code>while (resultSet.next()) {\n    String data = resultSet.getString(\"column_name\");\n    System.out.println(data);\n}<\/code><\/pre>\n<h3 id=\"5-%e9%97%9c%e9%96%89%e9%80%a3%e6%8e%a5-zNltbdCMUV\">5. \u95dc\u9589\u9023\u63a5<\/h3>\n<p>\u6700\u5f8c\uff0c\u8a18\u5f97\u5728\u5b8c\u6210\u64cd\u4f5c\u5f8c\u95dc\u9589\u9023\u63a5\uff1a<\/p>\n<pre><code>resultSet.close();\npreparedStatement.close();\nconnection.close();<\/code><\/pre>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e7%b0%a1%e5%96%ae%e7%9a%84java%e5%b0%8f%e7%a8%8b%e5%ba%8f-zNltbdCMUV\">\u793a\u4f8b\uff1a\u7c21\u55ae\u7684Java\u5c0f\u7a0b\u5e8f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Java\u5c0f\u7a0b\u5e8f\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u9023\u63a5\u5230MySQL\u6578\u64da\u5eab\u4e26\u67e5\u8a62\u6578\u64da\uff1a<\/p>\n<pre><code>import java.sql.*;\n\npublic class DatabaseExample {\n    public static void main(String[] args) {\n        try {\n            Class.forName(\"com.mysql.cj.jdbc.Driver\");\n            Connection connection = DriverManager.getConnection(\"jdbc:mysql:\/\/localhost:3306\/your_database\", \"your_username\", \"your_password\");\n            String sql = \"SELECT * FROM your_table\";\n            Statement statement = connection.createStatement();\n            ResultSet resultSet = statement.executeQuery(sql);\n            \n            while (resultSet.next()) {\n                System.out.println(\"Data: \" + resultSet.getString(\"column_name\"));\n            }\n            \n            resultSet.close();\n            statement.close();\n            connection.close();\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-zNltbdCMUV\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u4f7f\u7528Java\u9023\u63a5\u6578\u64da\u5eab\u4e26\u5be6\u73fe\u5c0f\u7a0b\u5e8f\u7684\u6578\u64da\u5b58\u53d6\u3002\u7121\u8ad6\u662f\u958b\u767c\u7c21\u55ae\u7684\u61c9\u7528\u9084\u662f\u8907\u96dc\u7684\u7cfb\u7d71\uff0c\u638c\u63e1Java\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u6280\u8853\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u82e5\u60a8\u9700\u8981\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u4f86\u90e8\u7f72\u60a8\u7684Java\u61c9\u7528\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528Java\u6280\u8853\u8f15\u9b06\u9023\u63a5\u6578\u64da\u5eab\uff0c\u5be6\u73fe\u9ad8\u6548\u7684\u5c0f\u7a0b\u5e8f\u958b\u767c\uff0c\u63d0\u5347\u4f60\u7684\u7de8\u7a0b\u6280\u80fd\u8207\u9805\u76ee\u6548\u7387\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-61923","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61923","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=61923"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61923\/revisions"}],"predecessor-version":[{"id":61924,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61923\/revisions\/61924"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61923"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61923"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61923"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}