{"id":61843,"date":"2024-10-13T14:09:20","date_gmt":"2024-10-13T06:09:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61843\/"},"modified":"2024-10-13T14:09:20","modified_gmt":"2024-10-13T06:09:20","slug":"java%e7%b7%a8%e7%a8%8b%e4%b8%ad%e5%a6%82%e4%bd%95%e5%ad%98%e5%84%b2%e5%92%8c%e8%a8%aa%e5%95%8f%e8%81%8a%e5%a4%a9%e8%a8%98%e9%8c%84%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-java%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61843\/","title":{"rendered":"Java\u7de8\u7a0b\u4e2d\u5982\u4f55\u5b58\u5132\u548c\u8a2a\u554f\u804a\u5929\u8a18\u9304\u6578\u64da\u5eab\uff1f (java\u6578\u64da\u5eab\u804a\u5929\u8a18\u9304)"},"content":{"rendered":"

Java\u7de8\u7a0b\u4e2d\u5982\u4f55\u5b58\u5132\u548c\u8a2a\u554f\u804a\u5929\u8a18\u9304\u6578\u64da\u5eab\uff1f<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u5b57\u6642\u4ee3\uff0c\u804a\u5929\u61c9\u7528\u7a0b\u5e8f\u5df2\u6210\u70ba\u4eba\u5011\u65e5\u5e38\u4ea4\u6d41\u7684\u91cd\u8981\u5de5\u5177\u3002\u7121\u8ad6\u662f\u793e\u4ea4\u5a92\u9ad4\u9084\u662f\u5373\u6642\u901a\u8a0a\uff0c\u804a\u5929\u8a18\u9304\u7684\u5b58\u5132\u548c\u8a2a\u554f\u90fd\u662f\u958b\u767c\u8005\u9700\u8981\u8003\u616e\u7684\u95dc\u9375\u554f\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Java\u7de8\u7a0b\u4e2d\u6709\u6548\u5730\u5b58\u5132\u548c\u8a2a\u554f\u804a\u5929\u8a18\u9304\u6578\u64da\u5eab\u3002<\/p>\n

\u9078\u64c7\u6578\u64da\u5eab<\/h2>\n

\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u3002\u5e38\u898b\u7684\u9078\u64c7\u5305\u62ec\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982MySQL\u3001PostgreSQL\uff09\u548c\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982MongoDB\uff09\u3002\u5c0d\u65bc\u804a\u5929\u8a18\u9304\uff0c\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u901a\u5e38\u66f4\u5177\u9748\u6d3b\u6027\uff0c\u56e0\u70ba\u5b83\u5011\u53ef\u4ee5\u8f15\u9b06\u8655\u7406\u4e0d\u898f\u5247\u7684\u6578\u64da\u7d50\u69cb\u3002<\/p>\n

\u4f7f\u7528MySQL\u5b58\u5132\u804a\u5929\u8a18\u9304<\/h3>\n

\u5982\u679c\u9078\u64c7\u4f7f\u7528MySQL\uff0c\u9996\u5148\u9700\u8981\u8a2d\u8a08\u6578\u64da\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u804a\u5929\u8a18\u9304\u6578\u64da\u8868\u8a2d\u8a08\uff1a<\/p>\n

\nCREATE TABLE chat_records (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    sender VARCHAR(255) NOT NULL,\n    receiver VARCHAR(255) NOT NULL,\n    message TEXT NOT NULL,\n    timestamp DATETIME DEFAULT CURRENT_TIMESTAMP\n);\n<\/code><\/pre>\n
\u9019\u500b\u8868\u5305\u542b\u4e86\u767c\u9001\u8005\u3001\u63a5\u6536\u8005\u3001\u6d88\u606f\u5167\u5bb9\u548c\u6642\u9593\u6233\u7b49\u5b57\u6bb5\u3002<\/p>\n
Java\u4e2d\u9023\u63a5MySQL\u6578\u64da\u5eab<\/h3>\n
\u5728Java\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528JDBC\uff08Java Database Connectivity\uff09\u4f86\u9023\u63a5MySQL\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u9023\u63a5\u6578\u64da\u5eab\u7684\u57fa\u672c\u4ee3\u78bc\uff1a<\/p>\n
\nimport java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n\npublic class DatabaseConnection {\n    private static final String URL = \"jdbc:mysql:\/\/localhost:3306\/your_database\";\n    private static final String USER = \"your_username\";\n    private static final String PASSWORD = \"your_password\";\n\n    public static Connection getConnection() throws SQLException {\n        return DriverManager.getConnection(URL, USER, PASSWORD);\n    }\n}\n<\/code><\/pre>\n
\u5b58\u5132\u804a\u5929\u8a18\u9304<\/h2>\n
\u4e00\u65e6\u9023\u63a5\u6210\u529f\uff0c\u5c31\u53ef\u4ee5\u958b\u59cb\u5b58\u5132\u804a\u5929\u8a18\u9304\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u5b58\u5132\u804a\u5929\u8a18\u9304\u7684\u793a\u4f8b\uff1a<\/p>\n
\nimport java.sql.Connection;\nimport java.sql.PreparedStatement;\nimport java.sql.SQLException;\n\npublic class ChatRecordStorage {\n    public void saveChatRecord(String sender, String receiver, String message) {\n        String sql = \"INSERT INTO chat_records (sender, receiver, message) VALUES (?, ?, ?)\";\n        \n        try (Connection connection = DatabaseConnection.getConnection();\n             PreparedStatement preparedStatement = connection.prepareStatement(sql)) {\n             \n            preparedStatement.setString(1, sender);\n            preparedStatement.setString(2, receiver);\n            preparedStatement.setString(3, message);\n            preparedStatement.executeUpdate();\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n
\u8a2a\u554f\u804a\u5929\u8a18\u9304<\/h2>\n
\u8981\u8a2a\u554f\u804a\u5929\u8a18\u9304\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u67e5\u8a62\u6578\u64da\u5eab\uff1a<\/p>\n
\nimport java.sql.Connection;\nimport java.sql.PreparedStatement;\nimport java.sql.ResultSet;\nimport java.sql.SQLException;\n\npublic class ChatRecordRetrieval {\n    public void getChatRecords(String user1, String user2) {\n        String sql = \"SELECT * FROM chat_records WHERE (sender = ? AND receiver = ?) OR (sender = ? AND receiver = ?)\";\n        \n        try (Connection connection = DatabaseConnection.getConnection();\n             PreparedStatement preparedStatement = connection.prepareStatement(sql)) {\n             \n            preparedStatement.setString(1, user1);\n            preparedStatement.setString(2, user2);\n            preparedStatement.setString(3, user2);\n            preparedStatement.setString(4, user1);\n            \n            ResultSet resultSet = preparedStatement.executeQuery();\n            while (resultSet.next()) {\n                System.out.println(\"Sender: \" + resultSet.getString(\"sender\"));\n                System.out.println(\"Message: \" + resultSet.getString(\"message\"));\n                System.out.println(\"Timestamp: \" + resultSet.getTimestamp(\"timestamp\"));\n            }\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u5728Java\u7de8\u7a0b\u4e2d\uff0c\u5b58\u5132\u548c\u8a2a\u554f\u804a\u5929\u8a18\u9304\u6578\u64da\u5eab\u662f\u4e00\u500b\u91cd\u8981\u7684\u4efb\u52d9\u3002\u901a\u904e\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u3001\u8a2d\u8a08\u6578\u64da\u8868\u3001\u4f7f\u7528JDBC\u9023\u63a5\u6578\u64da\u5eab\u4ee5\u53ca\u7de8\u5beb\u5b58\u5132\u548c\u67e5\u8a62\u7684\u4ee3\u78bc\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u804a\u5929\u8a18\u9304\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5b58\u5132\u548c\u8a2a\u554f\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u61c9\u7528\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u5728Java\u7de8\u7a0b\u4e2d\u5b58\u5132\u548c\u8a2a\u554f\u804a\u5929\u8a18\u9304\u6578\u64da\u5eab\uff0c\u5be6\u73fe\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u548c\u6aa2\u7d22\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-61843","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61843","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=61843"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61843\/revisions"}],"predecessor-version":[{"id":61844,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61843\/revisions\/61844"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61843"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61843"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61843"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}