{"id":182062,"date":"2024-11-09T20:47:24","date_gmt":"2024-11-09T12:47:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/182062\/"},"modified":"2024-11-09T20:47:25","modified_gmt":"2024-11-09T12:47:25","slug":"%e6%b7%b1%e5%85%a5%e6%8e%a2%e8%a8%8ejava%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%81%e8%a3%9d%e6%8a%80%e8%a1%93%ef%bc%88java%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%81%e8%a3%9d%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/182062\/","title":{"rendered":"\u6df1\u5165\u63a2\u8a0eJava\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853\uff08java\u6578\u64da\u5eab\u5c01\u88dd\uff09"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%85%a5%e6%8e%a2%e8%a8%8ejava%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%81%e8%a3%9d%e6%8a%80%e8%a1%93%ef%bc%88java%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%81%e8%a3%9d%ef%bc%89-pdPxnNgKfE\">\u6df1\u5165\u63a2\u8a0eJava\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853\uff08Java\u6578\u64da\u5eab\u5c01\u88dd\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u9ad4\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\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\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u9ad8\u6548\u5730\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eJava\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853\u7684\u57fa\u672c\u6982\u5ff5\u3001\u5e38\u898b\u7684\u5c01\u88dd\u6280\u8853\u4ee5\u53ca\u5176\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u512a\u52e2\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afjava%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%81%e8%a3%9d%e6%8a%80%e8%a1%93%ef%bc%9f-pdPxnNgKfE\">\u4ec0\u9ebc\u662fJava\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853\uff1f<\/h2>\n<p>Java\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853\u662f\u6307\u5728Java\u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0c\u901a\u904e\u7279\u5b9a\u7684API\u6216\u6846\u67b6\u4f86\u7c21\u5316\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u904e\u7a0b\u3002\u9019\u4e9b\u6280\u8853\u901a\u5e38\u5305\u62ec\u5c0d\u6578\u64da\u5eab\u9023\u63a5\u3001\u67e5\u8a62\u57f7\u884c\u3001\u7d50\u679c\u8655\u7406\u7b49\u64cd\u4f5c\u7684\u5c01\u88dd\uff0c\u65e8\u5728\u63d0\u9ad8\u958b\u767c\u6548\u7387\u548c\u4ee3\u78bc\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e7%9a%84java%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%81%e8%a3%9d%e6%8a%80%e8%a1%93-pdPxnNgKfE\">\u5e38\u898b\u7684Java\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853<\/h2>\n<h3 id=\"1-jdbc%ef%bc%88java-database-connectivity%ef%bc%89-pdPxnNgKfE\">1. JDBC\uff08Java Database Connectivity\uff09<\/h3>\n<p>JDBC\u662fJava\u63d0\u4f9b\u7684\u4e00\u500b\u6a19\u6e96API\uff0c\u7528\u65bc\u9023\u63a5\u548c\u64cd\u4f5c\u5404\u7a2e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u3002\u5b83\u5141\u8a31\u958b\u767c\u8005\u4f7f\u7528SQL\u8a9e\u53e5\u4f86\u57f7\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528JDBC\u9023\u63a5MySQL\u6578\u64da\u5eab\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\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        String url = \"jdbc:mysql:\/\/localhost:3306\/mydatabase\";\n        String user = \"username\";\n        String password = \"password\";\n\n        try {\n            Connection connection = DriverManager.getConnection(url, user, password);\n            Statement statement = connection.createStatement();\n            ResultSet resultSet = statement.executeQuery(\"SELECT * FROM users\");\n\n            while (resultSet.next()) {\n                System.out.println(\"User ID: \" + resultSet.getInt(\"id\"));\n                System.out.println(\"User Name: \" + resultSet.getString(\"name\"));\n            }\n\n            connection.close();\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<h3 id=\"2-orm%ef%bc%88object-relational-mapping%ef%bc%89-pdPxnNgKfE\">2. ORM\uff08Object-Relational Mapping\uff09<\/h3>\n<p>ORM\u662f\u4e00\u7a2e\u5c07\u5c0d\u8c61\u6a21\u578b\u8207\u6578\u64da\u5eab\u7d50\u69cb\u9032\u884c\u6620\u5c04\u7684\u6280\u8853\uff0c\u5e38\u898b\u7684Java ORM\u6846\u67b6\u5305\u62ecHibernate\u548cJPA\uff08Java Persistence API\uff09\u3002\u9019\u4e9b\u6846\u67b6\u901a\u904e\u5c07\u6578\u64da\u5eab\u64cd\u4f5c\u5c01\u88dd\u70ba\u5c0d\u8c61\u64cd\u4f5c\uff0c\u7c21\u5316\u4e86\u6578\u64da\u5eab\u7684\u4ea4\u4e92\u904e\u7a0b\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Hibernate\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>import org.hibernate.Session;\nimport org.hibernate.SessionFactory;\nimport org.hibernate.cfg.Configuration;\n\npublic class HibernateExample {\n    public static void main(String[] args) {\n        SessionFactory factory = new Configuration().configure(\"hibernate.cfg.xml\").addAnnotatedClass(User.class).buildSessionFactory();\n        Session session = factory.getCurrentSession();\n\n        try {\n            User user = new User(\"John\", \"Doe\");\n            session.beginTransaction();\n            session.save(user);\n            session.getTransaction().commit();\n        } finally {\n            factory.close();\n        }\n    }\n}\n<\/code><\/pre>\n<h3 id=\"3-spring-data-jpa-pdPxnNgKfE\">3. Spring Data JPA<\/h3>\n<p>Spring Data JPA\u662fSpring\u6846\u67b6\u7684\u4e00\u90e8\u5206\uff0c\u65e8\u5728\u7c21\u5316\u6578\u64da\u8a2a\u554f\u5c64\u7684\u958b\u767c\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u500b\u57fa\u65bcJPA\u7684\u6578\u64da\u8a2a\u554f\u62bd\u8c61\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u901a\u904e\u5b9a\u7fa9\u63a5\u53e3\u4f86\u81ea\u52d5\u751f\u6210\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Spring Data JPA\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>import org.springframework.data.jpa.repository.JpaRepository;\n\npublic interface UserRepository extends JpaRepository {\n    User findByName(String name);\n}\n<\/code><\/pre>\n<h2 id=\"java%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%81%e8%a3%9d%e6%8a%80%e8%a1%93%e7%9a%84%e5%84%aa%e5%8b%a2-pdPxnNgKfE\">Java\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u63d0\u9ad8\u958b\u767c\u6548\u7387\uff1a<\/strong>\u901a\u904e\u5c01\u88dd\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5c08\u6ce8\u65bc\u696d\u52d9\u908f\u8f2f\uff0c\u800c\u4e0d\u5fc5\u8655\u7406\u7e41\u7463\u7684\u6578\u64da\u5eab\u7d30\u7bc0\u3002<\/li>\n<li><strong>\u589e\u5f37\u4ee3\u78bc\u53ef\u7dad\u8b77\u6027\uff1a<\/strong>\u5c01\u88dd\u6280\u8853\u4f7f\u5f97\u4ee3\u78bc\u7d50\u69cb\u66f4\u52a0\u6e05\u6670\uff0c\u4fbf\u65bc\u5f8c\u671f\u7684\u7dad\u8b77\u548c\u64f4\u5c55\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u932f\u8aa4\uff1a<\/strong>\u4f7f\u7528\u9ad8\u7d1aAPI\u6216\u6846\u67b6\u53ef\u4ee5\u6e1b\u5c11\u624b\u52d5\u7de8\u5bebSQL\u8a9e\u53e5\u7684\u932f\u8aa4\u6a5f\u6703\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-pdPxnNgKfE\">\u7e3d\u7d50<\/h2>\n<p>Java\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u548c\u6846\u67b6\uff0c\u4ee5\u7c21\u5316\u6578\u64da\u5eab\u64cd\u4f5c\u4e26\u63d0\u9ad8\u958b\u767c\u6548\u7387\u3002\u7121\u8ad6\u662f\u4f7f\u7528JDBC\u9032\u884c\u76f4\u63a5\u64cd\u4f5c\uff0c\u9084\u662f\u5229\u7528ORM\u6846\u67b6\u5982Hibernate\u548cSpring Data JPA\uff0c\u9019\u4e9b\u6280\u8853\u90fd\u80fd\u6709\u6548\u5730\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u7684\u53ef\u7dad\u8b77\u6027\u548c\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684Java\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u4f01\u696d\u7d1a\u61c9\u7528\u9084\u662f\u500b\u4eba\u9805\u76ee\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eJava\u6578\u64da\u5eab\u5c01\u88dd\u6280\u8853\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u7ba1\u7406\u6578\u64da\u5eab\u9023\u63a5\u3001\u64cd\u4f5c\u548c\u6027\u80fd\u512a\u5316\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u6548\u7387\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-182062","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182062","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=182062"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182062\/revisions"}],"predecessor-version":[{"id":182063,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182062\/revisions\/182063"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=182062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=182062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=182062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}