{"id":62079,"date":"2024-10-13T16:00:22","date_gmt":"2024-10-13T08:00:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62079\/"},"modified":"2024-10-13T16:00:22","modified_gmt":"2024-10-13T08:00:22","slug":"java%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%a5%e5%8f%a3%e7%b7%a8%e5%af%ab%e6%8c%87%e5%8d%97-%e5%a6%82%e4%bd%95%e7%94%a8java%e5%af%ab%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%a5%e5%8f%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62079\/","title":{"rendered":"Java\u6578\u64da\u5eab\u63a5\u53e3\u7de8\u5beb\u6307\u5357 (\u5982\u4f55\u7528java\u5beb\u6578\u64da\u5eab\u63a5\u53e3)"},"content":{"rendered":"<h1 id=\"java%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%a5%e5%8f%a3%e7%b7%a8%e5%af%ab%e6%8c%87%e5%8d%97-%e5%a6%82%e4%bd%95%e7%94%a8java%e5%af%ab%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%a5%e5%8f%a3-GpyzfwAJzA\">Java\u6578\u64da\u5eab\u63a5\u53e3\u7de8\u5beb\u6307\u5357 (\u5982\u4f55\u7528Java\u5beb\u6578\u64da\u5eab\u63a5\u53e3)<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u5df2\u7d93\u6210\u70ba\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\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u7528Java\u7de8\u5beb\u6578\u64da\u5eab\u63a5\u53e3\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u5be6\u73fe\u6578\u64da\u5eab\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"1-%e7%90%86%e8%a7%a3%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%a5%e5%8f%a3-GpyzfwAJzA\">1. \u7406\u89e3\u6578\u64da\u5eab\u63a5\u53e3<\/h2>\n<p>\u6578\u64da\u5eab\u63a5\u53e3\u662f\u61c9\u7528\u7a0b\u5e8f\u8207\u6578\u64da\u5eab\u4e4b\u9593\u7684\u6a4b\u6a11\u3002\u5b83\u8ca0\u8cac\u8655\u7406\u6578\u64da\u7684\u589e\u522a\u6539\u67e5\uff08CRUD\uff09\u64cd\u4f5c\u3002Java\u63d0\u4f9b\u4e86\u591a\u7a2eAPI\u4f86\u5be6\u73fe\u9019\u4e00\u529f\u80fd\uff0c\u5176\u4e2d\u6700\u5e38\u7528\u7684\u662fJava Database Connectivity\uff08JDBC\uff09\u3002<\/p>\n<h2 id=\"2-jdbc%e6%a6%82%e8%bf%b0-GpyzfwAJzA\">2. JDBC\u6982\u8ff0<\/h2>\n<p>JDBC\u662f\u4e00\u500bJava API\uff0c\u5141\u8a31Java\u61c9\u7528\u7a0b\u5e8f\u8207\u5404\u7a2e\u6578\u64da\u5eab\u9032\u884c\u9023\u63a5\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u7d44\u6a19\u6e96\u7684\u63a5\u53e3\u548c\u985e\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u9019\u4e9b\u63a5\u53e3\u548c\u985e\u4f86\u57f7\u884cSQL\u8a9e\u53e5\uff0c\u4e26\u8655\u7406\u7d50\u679c\u96c6\u3002<\/p>\n<h3 id=\"2-1-jdbc%e7%9a%84%e4%b8%bb%e8%a6%81%e7%b5%84%e4%bb%b6-GpyzfwAJzA\">2.1 JDBC\u7684\u4e3b\u8981\u7d44\u4ef6<\/h3>\n<ul>\n<li><strong>DriverManager\uff1a<\/strong>\u8ca0\u8cac\u7ba1\u7406\u6578\u64da\u5eab\u9a45\u52d5\u7a0b\u5e8f\u7684\u985e\u3002<\/li>\n<li><strong>Connection\uff1a<\/strong>\u8868\u793a\u8207\u7279\u5b9a\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002<\/li>\n<li><strong>Statement\uff1a<\/strong>\u7528\u65bc\u57f7\u884cSQL\u8a9e\u53e5\u7684\u63a5\u53e3\u3002<\/li>\n<li><strong>ResultSet\uff1a<\/strong>\u8868\u793a\u67e5\u8a62\u7d50\u679c\u7684\u6578\u64da\u96c6\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e7%b7%a8%e5%af%ab%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%a5%e5%8f%a3%e7%9a%84%e6%ad%a5%e9%a9%9f-GpyzfwAJzA\">3. \u7de8\u5beb\u6578\u64da\u5eab\u63a5\u53e3\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"3-1-%e6%b7%bb%e5%8a%a0jdbc%e4%be%9d%e8%b3%b4-GpyzfwAJzA\">3.1 \u6dfb\u52a0JDBC\u4f9d\u8cf4<\/h3>\n<p>\u9996\u5148\uff0c\u78ba\u4fdd\u4f60\u7684Java\u9805\u76ee\u4e2d\u5305\u542bJDBC\u9a45\u52d5\u7a0b\u5e8f\u7684\u4f9d\u8cf4\u3002\u5982\u679c\u4f60\u4f7f\u7528Maven\uff0c\u53ef\u4ee5\u5728pom.xml\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u4f9d\u8cf4\uff1a<\/p>\n<pre><code>\n&lt;dependency&gt;\n    &lt;groupId&gt;mysql&lt;\/groupId&gt;\n    &lt;artifactId&gt;mysql-connector-java&lt;\/artifactId&gt;\n    &lt;version&gt;8.0.26&lt;\/version&gt;\n&lt;\/dependency&gt;\n<\/code><\/pre>\n<h3 id=\"3-2-%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-GpyzfwAJzA\">3.2 \u5275\u5efa\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u4f7f\u7528DriverManager\u4f86\u7372\u53d6\u6578\u64da\u5eab\u9023\u63a5\uff1a<\/p>\n<pre><code>\nimport java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n\npublic class DatabaseConnection {\n    public static Connection getConnection() {\n        Connection connection = null;\n        try {\n            String url = \"jdbc:mysql:\/\/localhost:3306\/your_database\";\n            String user = \"your_username\";\n            String password = \"your_password\";\n            connection = DriverManager.getConnection(url, user, password);\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n        return connection;\n    }\n}\n<\/code><\/pre>\n<h3 id=\"3-3-%e5%9f%b7%e8%a1%8csql%e8%aa%9e%e5%8f%a5-GpyzfwAJzA\">3.3 \u57f7\u884cSQL\u8a9e\u53e5<\/h3>\n<p>\u4f7f\u7528Statement\u6216PreparedStatement\u4f86\u57f7\u884cSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>\nimport java.sql.Connection;\nimport java.sql.PreparedStatement;\nimport java.sql.SQLException;\n\npublic class UserDAO {\n    public void addUser(String name, String email) {\n        String sql = \"INSERT INTO users (name, email) VALUES (?, ?)\";\n        try (Connection connection = DatabaseConnection.getConnection();\n             PreparedStatement preparedStatement = connection.prepareStatement(sql)) {\n            preparedStatement.setString(1, name);\n            preparedStatement.setString(2, email);\n            preparedStatement.executeUpdate();\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<h3 id=\"3-4-%e8%99%95%e7%90%86%e7%b5%90%e6%9e%9c%e9%9b%86-GpyzfwAJzA\">3.4 \u8655\u7406\u7d50\u679c\u96c6<\/h3>\n<p>\u67e5\u8a62\u6578\u64da\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528ResultSet\u4f86\u8655\u7406\u8fd4\u56de\u7684\u6578\u64da\uff1a<\/p>\n<pre><code>\nimport java.sql.Connection;\nimport java.sql.PreparedStatement;\nimport java.sql.ResultSet;\nimport java.sql.SQLException;\n\npublic class UserDAO {\n    public void getUsers() {\n        String sql = \"SELECT * FROM users\";\n        try (Connection connection = DatabaseConnection.getConnection();\n             PreparedStatement preparedStatement = connection.prepareStatement(sql);\n             ResultSet resultSet = preparedStatement.executeQuery()) {\n            while (resultSet.next()) {\n                System.out.println(\"Name: \" + resultSet.getString(\"name\"));\n                System.out.println(\"Email: \" + resultSet.getString(\"email\"));\n            }\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<h2 id=\"4-%e7%b8%bd%e7%b5%90-GpyzfwAJzA\">4. \u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\u5982\u4f55\u7528Java\u7de8\u5beb\u6578\u64da\u5eab\u63a5\u53e3\u3002JDBC\u63d0\u4f9b\u4e86\u4e00\u500b\u9748\u6d3b\u4e14\u5f37\u5927\u7684\u65b9\u5f0f\u4f86\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\uff0c\u7121\u8ad6\u662f\u57f7\u884c\u67e5\u8a62\u9084\u662f\u66f4\u65b0\u6578\u64da\u3002\u96a8\u8457\u6280\u8853\u7684\u767c\u5c55\uff0c\u9084\u6709\u8a31\u591a\u5176\u4ed6\u7684ORM\u6846\u67b6\uff08\u5982Hibernate\uff09\u53ef\u4ee5\u9032\u4e00\u6b65\u7c21\u5316\u6578\u64da\u5eab\u64cd\u4f5c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\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\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u7528Java\u7de8\u5beb\u6578\u64da\u5eab\u63a5\u53e3\uff0c\u638c\u63e1\u9023\u63a5\u3001\u67e5\u8a62\u548c\u64cd\u4f5c\u6578\u64da\u7684\u6280\u5de7\uff0c\u63d0\u5347\u4f60\u7684\u958b\u767c\u6280\u80fd\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-62079","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62079","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=62079"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62079\/revisions"}],"predecessor-version":[{"id":62080,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62079\/revisions\/62080"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}