{"id":185324,"date":"2024-11-10T20:36:18","date_gmt":"2024-11-10T12:36:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/185324\/"},"modified":"2024-11-10T20:36:20","modified_gmt":"2024-11-10T12:36:20","slug":"%e4%bd%bf%e7%94%a8struts2%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%ef%bc%88struts2%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/185324\/","title":{"rendered":"\u4f7f\u7528Struts2\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u5eab\u67e5\u8a62\uff08struts2\u67e5\u8a62\u6578\u64da\u5eab\uff09"},"content":{"rendered":"

\u4f7f\u7528Struts2\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u5eab\u67e5\u8a62<\/h1>\n

\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u67e5\u8a62\u7684\u6548\u7387\u5c0d\u65bc\u61c9\u7528\u7684\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002Struts2\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684Java Web\u61c9\u7528\u6846\u67b6\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\u4f86\u7c21\u5316\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Struts2\u5be6\u73fe\u9ad8\u6548\u7684\u6578\u64da\u5eab\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

Struts2\u7c21\u4ecb<\/h2>\n

Struts2\u662f\u4e00\u500b\u57fa\u65bcMVC\uff08\u6a21\u578b-\u8996\u5716-\u63a7\u5236\u5668\uff09\u67b6\u69cb\u7684Web\u61c9\u7528\u6846\u67b6\u3002\u5b83\u7684\u8a2d\u8a08\u76ee\u7684\u662f\u70ba\u4e86\u7c21\u5316Java EE\u61c9\u7528\u7684\u958b\u767c\u904e\u7a0b\u3002Struts2\u7684\u6838\u5fc3\u7279\u6027\u5305\u62ec\u6613\u65bc\u64f4\u5c55\u7684\u67b6\u69cb\u3001\u5f37\u5927\u7684\u8868\u55ae\u8655\u7406\u80fd\u529b\u4ee5\u53ca\u8207\u591a\u7a2e\u8996\u5716\u6280\u8853\u7684\u517c\u5bb9\u6027\u3002\u9019\u4e9b\u7279\u6027\u4f7f\u5f97Struts2\u6210\u70ba\u958b\u767c\u9ad8\u6548\u6578\u64da\u5eab\u67e5\u8a62\u61c9\u7528\u7684\u7406\u60f3\u9078\u64c7\u3002<\/p>\n

\u6578\u64da\u5eab\u67e5\u8a62\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u5728\u9032\u884c\u6578\u64da\u5eab\u67e5\u8a62\u4e4b\u524d\uff0c\u958b\u767c\u8005\u9700\u8981\u4e86\u89e3\u4e00\u4e9b\u57fa\u672c\u6982\u5ff5\uff0c\u5305\u62ecSQL\u8a9e\u8a00\u3001JDBC\uff08Java Database Connectivity\uff09\u4ee5\u53caORM\uff08Object-Relational Mapping\uff09\u6280\u8853\u3002\u9019\u4e9b\u6280\u8853\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u9ad8\u6548\u5730\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002<\/p>\n

\u4f7f\u7528JDBC\u9032\u884c\u6578\u64da\u5eab\u67e5\u8a62<\/h3>\n

JDBC\u662f\u4e00\u500bJava API\uff0c\u5141\u8a31Java\u61c9\u7528\u7a0b\u5e8f\u8207\u6578\u64da\u5eab\u9032\u884c\u9023\u63a5\u548c\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528JDBC\u9032\u884c\u6578\u64da\u5eab\u67e5\u8a62\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n

import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.PreparedStatement;\nimport java.sql.ResultSet;\n\npublic class DatabaseQuery {\n    public void queryDatabase() {\n        String url = \"jdbc:mysql:\/\/localhost:3306\/mydatabase\";\n        String user = \"username\";\n        String password = \"password\";\n\n        try (Connection conn = DriverManager.getConnection(url, user, password)) {\n            String sql = \"SELECT * FROM users WHERE age > ?\";\n            PreparedStatement pstmt = conn.prepareStatement(sql);\n            pstmt.setInt(1, 18);\n            ResultSet rs = pstmt.executeQuery();\n\n            while (rs.next()) {\n                System.out.println(\"User: \" + rs.getString(\"name\"));\n            }\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n
\u4f7f\u7528Hibernate\u9032\u884c\u6578\u64da\u5eab\u67e5\u8a62<\/h3>\n
Hibernate\u662f\u4e00\u7a2e\u6d41\u884c\u7684ORM\u6846\u67b6\uff0c\u53ef\u4ee5\u7c21\u5316\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u4f7f\u7528Hibernate\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u901a\u904e\u5c0d\u8c61\u4f86\u64cd\u4f5c\u6578\u64da\uff0c\u800c\u4e0d\u9700\u8981\u76f4\u63a5\u7de8\u5bebSQL\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Hibernate\u9032\u884c\u6578\u64da\u5eab\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n
import org.hibernate.Session;\nimport org.hibernate.SessionFactory;\nimport org.hibernate.cfg.Configuration;\nimport org.hibernate.query.Query;\n\nimport java.util.List;\n\npublic class HibernateQuery {\n    public void queryDatabase() {\n        SessionFactory factory = new Configuration().configure(\"hibernate.cfg.xml\").addAnnotatedClass(User.class).buildSessionFactory();\n        Session session = factory.getCurrentSession();\n\n        try {\n            session.beginTransaction();\n            Query query = session.createQuery(\"from User where age > 18\", User.class);\n            List users = query.getResultList();\n\n            for (User user : users) {\n                System.out.println(\"User: \" + user.getName());\n            }\n            session.getTransaction().commit();\n        } finally {\n            factory.close();\n        }\n    }\n}<\/code><\/pre>\n
Struts2\u4e2d\u7684\u6578\u64da\u5eab\u67e5\u8a62\u5be6\u73fe<\/h2>\n
\u5728Struts2\u4e2d\uff0c\u6578\u64da\u5eab\u67e5\u8a62\u901a\u5e38\u901a\u904eAction\u985e\u4f86\u5be6\u73fe\u3002\u958b\u767c\u8005\u53ef\u4ee5\u5728Action\u985e\u4e2d\u8abf\u7528JDBC\u6216Hibernate\u4f86\u57f7\u884c\u67e5\u8a62\uff0c\u7136\u5f8c\u5c07\u7d50\u679c\u50b3\u905e\u5230\u8996\u5716\u5c64\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Struts2 Action\u985e\u793a\u4f8b\uff1a<\/p>\n
import com.opensymphony.xwork2.ActionSupport;\nimport java.util.List;\n\npublic class UserAction extends ActionSupport {\n    private List userList;\n\n    public String execute() {\n        \/\/ \u4f7f\u7528Hibernate\u6216JDBC\u67e5\u8a62\u6578\u64da\u5eab\n        userList = \/\/ \u67e5\u8a62\u7d50\u679c;\n        return SUCCESS;\n    }\n\n    public List getUserList() {\n        return userList;\n    }\n}<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
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\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684Web\u61c9\u7528\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u3002\u7121\u8ad6\u662f\u9ad8\u6548\u7684 \u4e91\u4f3a\u670d\u5668<\/a> \u9084\u662f\u9748\u6d3b\u7684 \u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u6700\u4f73\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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