{"id":2399,"date":"2025-03-05T23:06:02","date_gmt":"2025-03-05T15:06:02","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2399"},"modified":"2025-03-05T23:06:02","modified_gmt":"2025-03-05T15:06:02","slug":"sqlite-java","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/05\/sqlite-java\/","title":{"rendered":"SQLite –\u00a0Java"},"content":{"rendered":"\n

\u5728 Java \u4e2d\uff0cSQLite \u901a\u5e38\u901a\u8fc7 JDBC\uff08Java Database Connectivity\uff09<\/strong> \u8fdb\u884c\u64cd\u4f5c\uff0c\u4f7f\u7528 sqlite-jdbc \u9a71\u52a8<\/strong> \u6765\u8fde\u63a5\u548c\u64cd\u4f5c SQLite \u6570\u636e\u5e93\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u8bb2\u89e3\uff0c\u5305\u62ec \u6570\u636e\u5e93\u8fde\u63a5\u3001\u6267\u884c SQL \u8bed\u53e5\u3001\u9884\u7f16\u8bd1\u67e5\u8be2\u3001\u4e8b\u52a1\u7ba1\u7406\u3001BLOB \u5904\u7406\u3001\u591a\u7ebf\u7a0b\u652f\u6301\u7b49<\/strong>\u3002<\/p>\n\n\n\n

\n\n\n\n

1. \u6dfb\u52a0 SQLite \u4f9d\u8d56<\/strong><\/h2>\n\n\n\n

Maven \u4f9d\u8d56<\/strong><\/h3>\n\n\n\n

\u5982\u679c\u4f60\u4f7f\u7528 Maven\uff0c\u53ef\u4ee5\u5728 pom.xml<\/code> \u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u4f9d\u8d56\uff1a<\/p>\n\n\n\n

<dependency>\n    <groupId>org.xerial<\/groupId>\n    <artifactId>sqlite-jdbc<\/artifactId>\n    <version>3.42.0.0<\/version>  <!-- \u6700\u65b0\u7248\u672c\u8bf7\u67e5\u770b\u5b98\u65b9 -->\n<\/dependency><\/code><\/pre>\n\n\n\n
\u5982\u679c\u4e0d\u4f7f\u7528 Maven\uff0c\u53ef\u4ee5\u76f4\u63a5\u4e0b\u8f7d sqlite-jdbc.jar<\/code>\uff0c\u5e76\u624b\u52a8\u6dfb\u52a0\u5230 classpath<\/code>\u3002<\/p>\n\n\n\n
\n\n\n\n
2. \u8fde\u63a5 SQLite \u6570\u636e\u5e93<\/strong><\/h2>\n\n\n\n
import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n\npublic class SQLiteConnection {\n    public static void main(String[] args) {\n        String url = \"jdbc:sqlite:test.db\";  \/\/ \u6570\u636e\u5e93\u6587\u4ef6\n\n        try (Connection conn = DriverManager.getConnection(url)) {\n            if (conn != null) {\n                System.out.println(\"\u6210\u529f\u8fde\u63a5\u5230 SQLite \u6570\u636e\u5e93\uff01\");\n            }\n        } catch (SQLException e) {\n            System.out.println(\"\u8fde\u63a5\u5931\u8d25: \" + e.getMessage());\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
\u5173\u952e\u70b9<\/strong><\/h3>\n\n\n\n
    \n
  • jdbc:sqlite:test.db<\/code><\/strong>\uff1a\u8868\u793a\u8fde\u63a5 test.db<\/code> \u6587\u4ef6\uff08\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\uff0c\u4f1a\u81ea\u52a8\u521b\u5efa\uff09\u3002<\/li>\n\n\n\n
  • DriverManager.getConnection(url)<\/code><\/strong>\uff1a\u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5\u3002<\/li>\n\n\n\n
  • try-with-resources<\/code> \u7ed3\u6784<\/strong>\uff1a\u81ea\u52a8\u5173\u95ed Connection<\/code> \u8d44\u6e90\uff0c\u907f\u514d\u6cc4\u6f0f\u3002<\/li>\n<\/ul>\n\n\n\n
    \n\n\n\n
    3. \u521b\u5efa\u8868<\/strong><\/h2>\n\n\n\n
    import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\nimport java.sql.Statement;\n\npublic class CreateTable {\n    public static void main(String[] args) {\n        String url = \"jdbc:sqlite:test.db\";\n\n        String sql = \"CREATE TABLE IF NOT EXISTS users (\"\n                   + \"id INTEGER PRIMARY KEY AUTOINCREMENT, \"\n                   + \"name TEXT NOT NULL, \"\n                   + \"age INTEGER);\";\n\n        try (Connection conn = DriverManager.getConnection(url);\n             Statement stmt = conn.createStatement()) {\n            stmt.execute(sql);\n            System.out.println(\"\u6570\u636e\u8868\u521b\u5efa\u6210\u529f\uff01\");\n        } catch (SQLException e) {\n            System.out.println(\"\u521b\u5efa\u8868\u5931\u8d25: \" + e.getMessage());\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
    CREATE TABLE IF NOT EXISTS<\/code><\/strong><\/h3>\n\n\n\n
      \n
    • \u9632\u6b62\u91cd\u590d\u521b\u5efa\u8868<\/strong><\/li>\n\n\n\n
    • id<\/code> \u662f \u81ea\u52a8\u9012\u589e\u4e3b\u952e<\/strong><\/li>\n\n\n\n
    • name<\/code> \u662f \u5fc5\u586b\u5b57\u6bb5<\/strong><\/li>\n\n\n\n
    • age<\/code> \u662f \u6574\u6570\u5b57\u6bb5<\/strong><\/li>\n<\/ul>\n\n\n\n
      \n\n\n\n
      4. \u63d2\u5165\u6570\u636e<\/strong><\/h2>\n\n\n\n
      import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\nimport java.sql.Statement;\n\npublic class InsertData {\n    public static void main(String[] args) {\n        String url = \"jdbc:sqlite:test.db\";\n\n        String sql = \"INSERT INTO users (name, age) VALUES ('Alice', 25);\";\n\n        try (Connection conn = DriverManager.getConnection(url);\n             Statement stmt = conn.createStatement()) {\n            stmt.executeUpdate(sql);\n            System.out.println(\"\u6570\u636e\u63d2\u5165\u6210\u529f\uff01\");\n        } catch (SQLException e) {\n            System.out.println(\"\u63d2\u5165\u5931\u8d25: \" + e.getMessage());\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      5. \u67e5\u8be2\u6570\u636e<\/strong><\/h2>\n\n\n\n
      import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.ResultSet;\nimport java.sql.SQLException;\nimport java.sql.Statement;\n\npublic class SelectData {\n    public static void main(String[] args) {\n        String url = \"jdbc:sqlite:test.db\";\n\n        String sql = \"SELECT id, name, age FROM users\";\n\n        try (Connection conn = DriverManager.getConnection(url);\n             Statement stmt = conn.createStatement();\n             ResultSet rs = stmt.executeQuery(sql)) {\n\n            while (rs.next()) {\n                int id = rs.getInt(\"id\");\n                String name = rs.getString(\"name\");\n                int age = rs.getInt(\"age\");\n                System.out.println(\"ID: \" + id + \", Name: \" + name + \", Age: \" + age);\n            }\n        } catch (SQLException e) {\n            System.out.println(\"\u67e5\u8be2\u5931\u8d25: \" + e.getMessage());\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      6. \u4f7f\u7528\u9884\u7f16\u8bd1 SQL\uff08\u9632\u6b62 SQL \u6ce8\u5165\uff09<\/strong><\/h2>\n\n\n\n
      import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.PreparedStatement;\nimport java.sql.SQLException;\n\npublic class PreparedInsert {\n    public static void main(String[] args) {\n        String url = \"jdbc:sqlite:test.db\";\n\n        String sql = \"INSERT INTO users (name, age) VALUES (?, ?)\";\n\n        try (Connection conn = DriverManager.getConnection(url);\n             PreparedStatement pstmt = conn.prepareStatement(sql)) {\n\n            pstmt.setString(1, \"Bob\");\n            pstmt.setInt(2, 30);\n            pstmt.executeUpdate();\n\n            System.out.println(\"\u6570\u636e\u63d2\u5165\u6210\u529f\uff01\");\n        } catch (SQLException e) {\n            System.out.println(\"\u63d2\u5165\u5931\u8d25: \" + e.getMessage());\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
      ?<\/code> \u5360\u4f4d\u7b26<\/strong>\uff1a\u53ef\u4ee5\u9632\u6b62 SQL \u6ce8\u5165\u653b\u51fb\u3002<\/p>\n\n\n\n
      \n\n\n\n
      7. \u4e8b\u52a1\u7ba1\u7406<\/strong><\/h2>\n\n\n\n
      import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\nimport java.sql.Statement;\n\npublic class TransactionExample {\n    public static void main(String[] args) {\n        String url = \"jdbc:sqlite:test.db\";\n\n        try (Connection conn = DriverManager.getConnection(url)) {\n            conn.setAutoCommit(false);  \/\/ \u5173\u95ed\u81ea\u52a8\u63d0\u4ea4\uff0c\u542f\u7528\u4e8b\u52a1\n\n            try (Statement stmt = conn.createStatement()) {\n                stmt.executeUpdate(\"INSERT INTO users (name, age) VALUES ('Tom', 35);\");\n                stmt.executeUpdate(\"INSERT INTO users (name, age) VALUES ('Jerry', 28);\");\n\n                conn.commit();  \/\/ \u63d0\u4ea4\u4e8b\u52a1\n                System.out.println(\"\u4e8b\u52a1\u63d0\u4ea4\u6210\u529f\uff01\");\n            } catch (SQLException e) {\n                conn.rollback();  \/\/ \u53d1\u751f\u9519\u8bef\u65f6\u56de\u6eda\n                System.out.println(\"\u4e8b\u52a1\u56de\u6eda: \" + e.getMessage());\n            }\n        } catch (SQLException e) {\n            System.out.println(\"\u6570\u636e\u5e93\u8fde\u63a5\u5931\u8d25: \" + e.getMessage());\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      8. \u5904\u7406 BLOB\uff08\u5b58\u50a8\u56fe\u7247\u3001\u6587\u4ef6\u7b49\uff09<\/strong><\/h2>\n\n\n\n
      import java.io.File;\nimport java.io.FileInputStream;\nimport java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.PreparedStatement;\nimport java.sql.SQLException;\n\npublic class InsertBlob {\n    public static void main(String[] args) {\n        String url = \"jdbc:sqlite:test.db\";\n\n        String sql = \"INSERT INTO files (name, data) VALUES (?, ?)\";\n\n        try (Connection conn = DriverManager.getConnection(url);\n             PreparedStatement pstmt = conn.prepareStatement(sql);\n             FileInputStream fis = new FileInputStream(new File(\"image.jpg\"))) {\n\n            pstmt.setString(1, \"image.jpg\");\n            pstmt.setBinaryStream(2, fis, (int) new File(\"image.jpg\").length());\n            pstmt.executeUpdate();\n\n            System.out.println(\"BLOB \u6570\u636e\u63d2\u5165\u6210\u529f\uff01\");\n        } catch (SQLException | java.io.IOException e) {\n            System.out.println(\"\u63d2\u5165\u5931\u8d25: \" + e.getMessage());\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      9. \u591a\u7ebf\u7a0b\u652f\u6301<\/strong><\/h2>\n\n\n\n
      \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cSQLite \u4e0d\u652f\u6301\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u5199\u5165<\/strong>\uff0c\u5982\u679c\u9700\u8981\u652f\u6301\u5e76\u53d1\u5199\u5165\uff1a<\/p>\n\n\n\n
      Connection conn = DriverManager.getConnection(\"jdbc:sqlite:test.db?journal_mode=WAL\");<\/code><\/pre>\n\n\n\n
        \n
      • WAL\uff08Write-Ahead Logging\uff09<\/code> \u6a21\u5f0f\u53ef\u4ee5\u8ba9\u591a\u4e2a\u7ebf\u7a0b\u8bfb\u5199\u64cd\u4f5c\u66f4\u52a0\u7a33\u5b9a\u3002<\/li>\n<\/ul>\n\n\n\n
        \n\n\n\n
        10. SQLite \u5728 Java \u4e2d\u7684\u9ad8\u7ea7\u4f18\u5316<\/strong><\/h2>\n\n\n\n
        \u5728 Java \u4e2d\u4f7f\u7528 SQLite \u65f6\uff0c\u6027\u80fd\u4f18\u5316\u662f\u4e00\u4e2a\u5173\u952e\u95ee\u9898\uff0c\u7279\u522b\u662f\u5f53\u6570\u636e\u91cf\u589e\u5927\u65f6\u3002\u4e0b\u9762\u4ecb\u7ecd\u4e00\u4e9b\u4f18\u5316\u6280\u5de7\uff0c\u5305\u62ec \u7d22\u5f15\u4f18\u5316\u3001\u6279\u91cf\u63d2\u5165\u3001WAL \u6a21\u5f0f\u3001\u7f13\u5b58\u4f18\u5316\u3001pragma \u6307\u4ee4\u7b49<\/strong>\u3002<\/p>\n\n\n\n
        \n\n\n\n
        10.1. \u4f7f\u7528\u7d22\u5f15\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd<\/strong><\/h3>\n\n\n\n
        \u5f53\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\u91cf\u8f83\u5927\u65f6\uff0c\u5408\u7406\u521b\u5efa\u7d22\u5f15\u53ef\u4ee5 \u5927\u5e45\u63d0\u9ad8\u67e5\u8be2\u901f\u5ea6<\/strong>\u3002<\/p>\n\n\n\n
        String sql = \"CREATE INDEX IF NOT EXISTS idx_users_name ON users(name);\";<\/code><\/pre>\n\n\n\n
        \u793a\u4f8b\uff1a\u67e5\u8be2\u4f7f\u7528\u7d22\u5f15<\/strong><\/h4>\n\n\n\n
        String sql = \"SELECT * FROM users WHERE name = 'Alice';\";<\/code><\/pre>\n\n\n\n
        \u5728 name<\/code> \u5217\u4e0a\u521b\u5efa\u7d22\u5f15\u540e\uff0c\u67e5\u8be2\u901f\u5ea6\u4f1a\u663e\u8457\u63d0\u9ad8\u3002<\/p>\n\n\n\n
        \u7d22\u5f15\u4f18\u5316\u5efa\u8bae<\/strong><\/h4>\n\n\n\n
          \n
        • \u9891\u7e41\u67e5\u8be2\u7684\u5217<\/strong> \u5e94\u8be5\u5efa\u7acb\u7d22\u5f15\uff0c\u4f8b\u5982 WHERE<\/code> \u6761\u4ef6\u4e2d\u7684\u5217\u3002<\/li>\n\n\n\n
        • \u907f\u514d\u8fc7\u591a\u7d22\u5f15<\/strong>\uff0c\u7d22\u5f15\u4f1a\u5f71\u54cd INSERT<\/code> \u548c UPDATE<\/code> \u7684\u6027\u80fd\u3002<\/li>\n\n\n\n
        • \u4f7f\u7528 EXPLAIN QUERY PLAN<\/code><\/strong> \u5206\u6790\u67e5\u8be2\u8ba1\u5212\uff1a<\/li>\n<\/ul>\n\n\n\n
            String sql = \"EXPLAIN QUERY PLAN SELECT * FROM users WHERE name = 'Alice';\";<\/code><\/pre>\n\n\n\n
          \n\n\n\n
          10.2. \u542f\u7528 WAL\uff08Write-Ahead Logging\uff09\u6a21\u5f0f<\/strong><\/h3>\n\n\n\n
          \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cSQLite \u4f7f\u7528 “DELETE”<\/strong> \u65e5\u5fd7\u6a21\u5f0f\uff0c\u5728\u5e76\u53d1\u5199\u5165\u65f6\u53ef\u80fd\u5bfc\u81f4\u9501\u51b2\u7a81\u3002\u542f\u7528 WAL \u6a21\u5f0f<\/strong> \u53ef\u4ee5\u63d0\u9ad8 \u5e76\u53d1\u8bfb\u5199\u6027\u80fd<\/strong>\u3002<\/p>\n\n\n\n
          try (Connection conn = DriverManager.getConnection(\"jdbc:sqlite:test.db\")) {\n    try (Statement stmt = conn.createStatement()) {\n        stmt.execute(\"PRAGMA journal_mode=WAL;\");\n        System.out.println(\"WAL \u6a21\u5f0f\u5df2\u542f\u7528\");\n    }\n} catch (SQLException e) {\n    System.out.println(\"\u542f\u7528 WAL \u5931\u8d25: \" + e.getMessage());\n}<\/code><\/pre>\n\n\n\n
          WAL \u4f18\u52bf<\/strong><\/p>\n\n\n\n
            \n
          • \u8bfb\u5199\u64cd\u4f5c\u53ef\u540c\u65f6\u8fdb\u884c\uff08\u63d0\u9ad8\u5e76\u53d1\uff09\u3002<\/li>\n\n\n\n
          • \u9002\u7528\u4e8e\u591a\u7ebf\u7a0b Java \u7a0b\u5e8f\u3002<\/li>\n<\/ul>\n\n\n\n
            \n\n\n\n
            10.3. \u6279\u91cf\u63d2\u5165\u6570\u636e<\/strong><\/h3>\n\n\n\n
            \u6279\u91cf\u63d2\u5165\u6bd4\u5355\u6761\u63d2\u5165\u5feb 10~100 \u500d<\/strong>\uff0c\u56e0\u4e3a SQLite \u9ed8\u8ba4\u6bcf\u6b21 INSERT<\/code> \u64cd\u4f5c\u90fd\u4f1a\u8fdb\u884c\u4e00\u6b21\u4e8b\u52a1\u63d0\u4ea4<\/strong>\u3002<\/p>\n\n\n\n
            \u9519\u8bef\u7684\u65b9\u5f0f\uff08\u6162\uff09<\/strong><\/h4>\n\n\n\n
            for (int i = 0; i < 1000; i++) {\n    stmt.executeUpdate(\"INSERT INTO users (name, age) VALUES ('User\" + i + \"', 25);\");\n}<\/code><\/pre>\n\n\n\n
            \u6bcf\u6761 INSERT<\/code> \u8bed\u53e5\u90fd\u4f1a\u6267\u884c\u4e00\u6b21\u4e8b\u52a1\u63d0\u4ea4\uff0c\u5bfc\u81f4 \u6027\u80fd\u4f4e\u4e0b<\/strong>\u3002<\/p>\n\n\n\n
            \u4f18\u5316\u65b9\u5f0f\uff08\u5feb\uff09<\/strong><\/h4>\n\n\n\n
            \u4f7f\u7528 \u4e8b\u52a1+\u6279\u5904\u7406<\/strong>\uff1a<\/p>\n\n\n\n
            try (Connection conn = DriverManager.getConnection(\"jdbc:sqlite:test.db\")) {\n    conn.setAutoCommit(false);  \/\/ \u5173\u95ed\u81ea\u52a8\u63d0\u4ea4\uff0c\u4f7f\u7528\u4e8b\u52a1\n\n    try (PreparedStatement pstmt = conn.prepareStatement(\"INSERT INTO users (name, age) VALUES (?, ?)\")) {\n        for (int i = 0; i < 1000; i++) {\n            pstmt.setString(1, \"User\" + i);\n            pstmt.setInt(2, 25);\n            pstmt.addBatch();  \/\/ \u52a0\u5165\u6279\u5904\u7406\n        }\n        pstmt.executeBatch();  \/\/ \u4e00\u6b21\u6027\u63d0\u4ea4\u6279\u91cf\u63d2\u5165\n        conn.commit();\n        System.out.println(\"\u6279\u91cf\u63d2\u5165\u5b8c\u6210\uff01\");\n    } catch (SQLException e) {\n        conn.rollback();  \/\/ \u4e8b\u52a1\u56de\u6eda\n        System.out.println(\"\u63d2\u5165\u5931\u8d25: \" + e.getMessage());\n    }\n}<\/code><\/pre>\n\n\n\n
            \u4e3a\u4ec0\u4e48\u8fd9\u6837\u66f4\u5feb\uff1f<\/strong><\/p>\n\n\n\n
              \n
            • \u51cf\u5c11\u78c1\u76d8 IO<\/strong>\uff1a\u4e8b\u52a1\u63d0\u4ea4\u4e00\u6b21\uff0c\u907f\u514d \u6bcf\u6761 INSERT<\/code> \u90fd\u89e6\u53d1 COMMIT<\/code><\/strong>\u3002<\/li>\n\n\n\n
            • \u6279\u5904\u7406<\/strong>\uff1a\u4e00\u6b21\u6027\u6267\u884c 1000 \u6761 INSERT<\/code>\uff0c\u5927\u5e45\u51cf\u5c11 SQL \u89e3\u6790\u65f6\u95f4\u3002<\/li>\n<\/ul>\n\n\n\n
              \n\n\n\n
              10.4. \u9002\u5f53\u4f7f\u7528 PRAGMA \u6307\u4ee4<\/strong><\/h3>\n\n\n\n
              SQLite \u5141\u8bb8\u901a\u8fc7 PRAGMA<\/code> \u8fdb\u884c \u6570\u636e\u5e93\u4f18\u5316<\/strong>\u3002<\/p>\n\n\n\n
              \u8c03\u6574\u7f13\u5b58\u5927\u5c0f<\/strong><\/h4>\n\n\n\n
              stmt.execute(\"PRAGMA cache_size = 10000;\");  \/\/ \u4ee5\u9875\u9762\u4e3a\u5355\u4f4d\uff0c\u6bcf\u9875 4KB<\/code><\/pre>\n\n\n\n
              \u7f13\u5b58\u53ef\u4ee5\u51cf\u5c11\u78c1\u76d8 IO\uff0c\u63d0\u9ad8\u67e5\u8be2\u901f\u5ea6<\/strong>\u3002<\/p>\n\n\n\n
              \u63d0\u5347 INSERT<\/code> \u901f\u5ea6<\/strong><\/h4>\n\n\n\n
              stmt.execute(\"PRAGMA synchronous = OFF;\");\nstmt.execute(\"PRAGMA journal_mode = MEMORY;\");<\/code><\/pre>\n\n\n\n
                \n
              • PRAGMA synchronous = OFF;<\/code>\uff1a\u51cf\u5c11\u540c\u6b65\u64cd\u4f5c\uff0c\u63d0\u9ad8\u5199\u5165\u901f\u5ea6\u3002<\/li>\n\n\n\n
              • PRAGMA journal_mode = MEMORY;<\/code>\uff1a\u4e8b\u52a1\u65e5\u5fd7\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\uff0c\u52a0\u5feb\u5199\u5165\u901f\u5ea6\u3002<\/li>\n<\/ul>\n\n\n\n
                \n\n\n\n
                10.5. \u5904\u7406\u5927\u6570\u636e\u67e5\u8be2<\/strong><\/h3>\n\n\n\n
                \u5f53\u8868\u4e2d\u6570\u636e\u91cf\u8f83\u5927\uff08\u767e\u4e07\u7ea7\uff09\uff0c\u67e5\u8be2\u53ef\u80fd\u4f1a\u53d8\u6162\u3002\u4f18\u5316\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
                  \n
                1. \u4f7f\u7528 LIMIT<\/code> \u5206\u9875\u67e5\u8be2<\/strong><\/li>\n<\/ol>\n\n\n\n
                     String sql = \"SELECT * FROM users ORDER BY id LIMIT 10 OFFSET 100;\";<\/code><\/pre>\n\n\n\n
                    \n
                  1. \u907f\u514d SELECT *<\/code>\uff0c\u53ea\u67e5\u8be2\u9700\u8981\u7684\u5b57\u6bb5<\/strong><\/li>\n<\/ol>\n\n\n\n
                       String sql = \"SELECT name, age FROM users WHERE age > 20;\";<\/code><\/pre>\n\n\n\n
                      \n
                    1. \u4f7f\u7528 EXPLAIN QUERY PLAN<\/code> \u5206\u6790\u67e5\u8be2\u6267\u884c<\/strong><\/li>\n<\/ol>\n\n\n\n
                         String sql = \"EXPLAIN QUERY PLAN SELECT * FROM users WHERE name = 'Alice';\";<\/code><\/pre>\n\n\n\n
                      \n\n\n\n
                      10.6. \u5e76\u53d1\u63a7\u5236<\/strong><\/h3>\n\n\n\n
                      SQLite \u7ebf\u7a0b\u6a21\u5f0f<\/strong><\/h4>\n\n\n\n
                      SQLite \u63d0\u4f9b \u4e09\u79cd\u7ebf\u7a0b\u6a21\u5f0f<\/strong>\uff1a<\/p>\n\n\n\n
                        \n
                      • PRAGMA threading_mode = SINGLE;<\/code> \/\/ \u5355\u7ebf\u7a0b<\/li>\n\n\n\n
                      • PRAGMA threading_mode = MULTI;<\/code> \/\/ \u591a\u7ebf\u7a0b\uff08\u9ed8\u8ba4\uff09<\/li>\n\n\n\n
                      • PRAGMA threading_mode = SERIALIZED;<\/code> \/\/ \u4e32\u884c\u6a21\u5f0f\uff0c\u4fdd\u8bc1\u7ebf\u7a0b\u5b89\u5168<\/li>\n<\/ul>\n\n\n\n
                        \u5bf9\u4e8e \u591a\u7ebf\u7a0b\u5199\u5165<\/strong>\uff0c\u5efa\u8bae\uff1a<\/p>\n\n\n\n
                        Connection conn = DriverManager.getConnection(\"jdbc:sqlite:test.db?journal_mode=WAL\");<\/code><\/pre>\n\n\n\n
                        \u8fd9\u6837\u53ef\u4ee5\u652f\u6301\u591a\u4e2a\u7ebf\u7a0b\u5e76\u53d1\u5199\u5165\u3002<\/strong><\/p>\n\n\n\n
                        \n\n\n\n
                        10.7. SQLite \u6570\u636e\u5e93\u5907\u4efd<\/strong><\/h3>\n\n\n\n
                        try (Connection conn = DriverManager.getConnection(\"jdbc:sqlite:test.db\");\n     Statement stmt = conn.createStatement()) {\n    stmt.executeUpdate(\"VACUUM;\");\n    System.out.println(\"\u6570\u636e\u5e93\u5df2\u4f18\u5316\uff01\");\n} catch (SQLException e) {\n    System.out.println(\"\u4f18\u5316\u5931\u8d25: \" + e.getMessage());\n}<\/code><\/pre>\n\n\n\n
                        VACUUM;<\/code><\/strong><\/p>\n\n\n\n
                          \n
                        • \u51cf\u5c11\u6570\u636e\u5e93\u6587\u4ef6\u5927\u5c0f<\/strong><\/li>\n\n\n\n
                        • \u63d0\u9ad8\u67e5\u8be2\u6027\u80fd<\/strong><\/li>\n<\/ul>\n\n\n\n
                          \n\n\n\n
                          11. Java \u4e0e SQLite \u9ad8\u7ea7\u5e94\u7528<\/strong><\/h2>\n\n\n\n
                          \u672c\u8282\u7ee7\u7eed\u6df1\u5165\u8bb2\u89e3 Java \u4e0e SQLite \u7684\u9ad8\u7ea7\u5e94\u7528\uff0c\u6db5\u76d6 \u591a\u7ebf\u7a0b\u6570\u636e\u5e93\u64cd\u4f5c\u3001ORM \u6846\u67b6\uff08Hibernate\uff09\u3001Spring Boot \u96c6\u6210 SQLite\u3001\u52a0\u5bc6\u6570\u636e\u5e93\u3001\u5b89\u5168\u6027\u4f18\u5316<\/strong> \u7b49\u5185\u5bb9\u3002<\/p>\n\n\n\n
                          \n\n\n\n
                          11.1. SQLite \u5728\u591a\u7ebf\u7a0b Java \u5e94\u7528\u4e2d\u7684\u4f7f\u7528<\/strong><\/h3>\n\n\n\n
                          \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cSQLite \u4ee5\u5355\u7ebf\u7a0b\u6a21\u5f0f<\/strong>\u8fd0\u884c\uff0c\u5982\u679c\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u64cd\u4f5c\u6570\u636e\u5e93\uff0c\u53ef\u80fd\u4f1a\u5f15\u53d1 database is locked<\/code> \u9519\u8bef\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u7b56\u7565\uff1a<\/p>\n\n\n\n
                          1. \u8bbe\u7f6e SQLite \u7ebf\u7a0b\u6a21\u5f0f<\/strong><\/h4>\n\n\n\n
                          SQLite \u63d0\u4f9b\u4e09\u79cd\u7ebf\u7a0b\u6a21\u5f0f\uff1a<\/p>\n\n\n\n
                            \n
                          • SINGLE<\/code><\/strong>\uff08\u9ed8\u8ba4\uff09\uff1a\u6240\u6709\u6570\u636e\u5e93\u8fde\u63a5\u5fc5\u987b\u5728\u540c\u4e00\u7ebf\u7a0b\u4e2d\u3002<\/li>\n\n\n\n
                          • MULTI<\/code><\/strong>\uff1a\u591a\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684\u8fde\u63a5\uff0c\u4f46\u540c\u4e00\u8fde\u63a5\u4e0d\u80fd\u88ab\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u3002<\/li>\n\n\n\n
                          • SERIALIZED<\/code><\/strong>\uff08\u63a8\u8350\uff09\uff1a\u5141\u8bb8\u591a\u4e2a\u7ebf\u7a0b\u5b89\u5168\u5730\u8bbf\u95ee\u540c\u4e00\u8fde\u63a5\u3002<\/li>\n<\/ul>\n\n\n\n
                            try (Connection conn = DriverManager.getConnection(\"jdbc:sqlite:test.db?threadsafe=3\")) {\n    System.out.println(\"SQLite \u7ebf\u7a0b\u6a21\u5f0f\u8bbe\u7f6e\u4e3a SERIALIZED\");\n}<\/code><\/pre>\n\n\n\n
                            2. \u4f7f\u7528 synchronized<\/code> \u4fdd\u8bc1\u7ebf\u7a0b\u5b89\u5168<\/strong><\/h4>\n\n\n\n
                            \u5982\u679c\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u540c\u4e00\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u53ef\u4ee5\u4f7f\u7528 synchronized<\/code> \u5173\u952e\u5b57\uff1a<\/p>\n\n\n\n
                            public synchronized void insertUser(String name, int age) {\n    try (PreparedStatement pstmt = conn.prepareStatement(\"INSERT INTO users (name, age) VALUES (?, ?)\")) {\n        pstmt.setString(1, name);\n        pstmt.setInt(2, age);\n        pstmt.executeUpdate();\n    } catch (SQLException e) {\n        e.printStackTrace();\n    }\n}<\/code><\/pre>\n\n\n\n
                            3. \u4f7f\u7528\u6570\u636e\u5e93\u8fde\u63a5\u6c60<\/strong><\/h4>\n\n\n\n
                            SQLite \u662f\u8f7b\u91cf\u7ea7\u6570\u636e\u5e93<\/strong>\uff0c\u4e0d\u652f\u6301\u6807\u51c6\u7684\u6570\u636e\u5e93\u8fde\u63a5\u6c60\uff08\u5982 HikariCP\uff09\u3002\u4e0d\u8fc7\u53ef\u4ee5\u4f7f\u7528 SQLite \u8fde\u63a5\u6c60\u5e93 org.sqlite.SQLiteDataSource<\/code><\/strong> \u6765\u7ba1\u7406\u8fde\u63a5\uff1a<\/p>\n\n\n\n
                            SQLiteDataSource dataSource = new SQLiteDataSource();\ndataSource.setUrl(\"jdbc:sqlite:test.db\");\n\ntry (Connection conn = dataSource.getConnection()) {\n    System.out.println(\"\u4f7f\u7528 SQLite \u8fde\u63a5\u6c60\u521b\u5efa\u8fde\u63a5\uff01\");\n}<\/code><\/pre>\n\n\n\n
                            \n\n\n\n
                            11.2. \u5728 Java \u4e2d\u4f7f\u7528 Hibernate \u64cd\u4f5c SQLite<\/strong><\/h3>\n\n\n\n
                            Hibernate \u662f\u4e00\u4e2a\u5e38\u89c1\u7684 ORM\uff08\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04\uff09\u6846\u67b6\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u4f7f\u7528 Java \u7c7b\u6765\u64cd\u4f5c SQLite \u6570\u636e\u5e93\u3002<\/p>\n\n\n\n
                            1. \u6dfb\u52a0 Hibernate \u4f9d\u8d56<\/strong><\/h4>\n\n\n\n
                            \u5982\u679c\u4f7f\u7528 Maven<\/strong>\uff0c\u5728 pom.xml<\/code> \u6dfb\u52a0\uff1a<\/p>\n\n\n\n
                            <dependency>\n    <groupId>org.hibernate<\/groupId>\n    <artifactId>hibernate-core<\/artifactId>\n    <version>6.0.0.Final<\/version>\n<\/dependency>\n\n<dependency>\n    <groupId>org.xerial<\/groupId>\n    <artifactId>sqlite-jdbc<\/artifactId>\n    <version>3.41.2.1<\/version>\n<\/dependency><\/code><\/pre>\n\n\n\n
                            2. \u914d\u7f6e Hibernate<\/strong><\/h4>\n\n\n\n
                            \u521b\u5efa hibernate.cfg.xml<\/code>\uff1a<\/p>\n\n\n\n
                            <hibernate-configuration>\n    <session-factory>\n        <property name=\"hibernate.connection.driver_class\">org.sqlite.JDBC<\/property>\n        <property name=\"hibernate.connection.url\">jdbc:sqlite:test.db<\/property>\n        <property name=\"hibernate.dialect\">org.hibernate.community.dialect.SQLiteDialect<\/property>\n        <property name=\"hibernate.hbm2ddl.auto\">update<\/property>\n        <property name=\"hibernate.show_sql\">true<\/property>\n    <\/session-factory>\n<\/hibernate-configuration><\/code><\/pre>\n\n\n\n
                            3. \u5b9a\u4e49\u5b9e\u4f53\u7c7b<\/strong><\/h4>\n\n\n\n
                            \u521b\u5efa User.java<\/code>\uff1a<\/p>\n\n\n\n
                            @Entity\n@Table(name = \"users\")\npublic class User {\n    @Id\n    @GeneratedValue(strategy = GenerationType.IDENTITY)\n    private Long id;\n\n    @Column(name = \"name\")\n    private String name;\n\n    @Column(name = \"age\")\n    private int age;\n\n    \/\/ Getters \u548c Setters\n}<\/code><\/pre>\n\n\n\n
                            4. \u4f7f\u7528 Hibernate \u8fdb\u884c\u6570\u636e\u5e93\u64cd\u4f5c<\/strong><\/h4>\n\n\n\n
                            SessionFactory factory = new Configuration().configure(\"hibernate.cfg.xml\").buildSessionFactory();\nSession session = factory.openSession();\nTransaction tx = session.beginTransaction();\n\nUser user = new User();\nuser.setName(\"Alice\");\nuser.setAge(25);\nsession.save(user);\n\ntx.commit();\nsession.close();\nfactory.close();<\/code><\/pre>\n\n\n\n
                            Hibernate \u81ea\u52a8\u7ba1\u7406 SQL \u8bed\u53e5\uff0c\u5e76\u4f18\u5316\u67e5\u8be2\u6027\u80fd\uff01<\/strong><\/p>\n\n\n\n
                            \n\n\n\n
                            11.3. \u5728 Spring Boot \u4e2d\u4f7f\u7528 SQLite<\/strong><\/h3>\n\n\n\n
                            \u5982\u679c\u4f60\u7684 Java \u9879\u76ee\u662f Spring Boot<\/strong>\uff0c\u53ef\u4ee5\u76f4\u63a5\u96c6\u6210 SQLite\uff01<\/p>\n\n\n\n
                            1. \u6dfb\u52a0 SQLite \u4f9d\u8d56<\/strong><\/h4>\n\n\n\n
                            \u5728 pom.xml<\/code> \u4e2d\uff1a<\/p>\n\n\n\n
                            <dependency>\n    <groupId>org.springframework.boot<\/groupId>\n    <artifactId>spring-boot-starter-data-jpa<\/artifactId>\n<\/dependency>\n\n<dependency>\n    <groupId>org.xerial<\/groupId>\n    <artifactId>sqlite-jdbc<\/artifactId>\n    <version>3.41.2.1<\/version>\n<\/dependency><\/code><\/pre>\n\n\n\n
                            2. \u914d\u7f6e application.properties<\/code><\/strong><\/h4>\n\n\n\n
                            spring.datasource.url=jdbc:sqlite:test.db\nspring.datasource.driver-class-name=org.sqlite.JDBC\nspring.jpa.database-platform=org.hibernate.community.dialect.SQLiteDialect<\/code><\/pre>\n\n\n\n
                            3. \u521b\u5efa JPA \u5b9e\u4f53\u7c7b<\/strong><\/h4>\n\n\n\n
                            @Entity\n@Table(name = \"users\")\npublic class User {\n    @Id\n    @GeneratedValue(strategy = GenerationType.IDENTITY)\n    private Long id;\n\n    private String name;\n    private int age;\n\n    \/\/ Getters & Setters\n}<\/code><\/pre>\n\n\n\n
                            4. \u521b\u5efa Repository<\/strong><\/h4>\n\n\n\n
                            @Repository\npublic interface UserRepository extends JpaRepository<User, Long> {\n    List<User> findByName(String name);\n}<\/code><\/pre>\n\n\n\n
                            5. \u7f16\u5199\u63a7\u5236\u5668<\/strong><\/h4>\n\n\n\n
                            @RestController\n@RequestMapping(\"\/users\")\npublic class UserController {\n    @Autowired\n    private UserRepository userRepository;\n\n    @PostMapping\n    public User createUser(@RequestBody User user) {\n        return userRepository.save(user);\n    }\n\n    @GetMapping\n    public List<User> getAllUsers() {\n        return userRepository.findAll();\n    }\n}<\/code><\/pre>\n\n\n\n
                            \u8fd9\u6837\uff0c\u6211\u4eec\u7684 Spring Boot \u5e94\u7528\u5df2\u7ecf\u53ef\u4ee5\u901a\u8fc7 REST API<\/strong> \u64cd\u4f5c SQLite \u6570\u636e\u5e93\uff01 \ud83d\ude80<\/p>\n\n\n\n
                            \n\n\n\n
                            11.4. SQLite \u6570\u636e\u5e93\u52a0\u5bc6<\/strong><\/h3>\n\n\n\n
                            SQLite \u9ed8\u8ba4\u4e0d\u652f\u6301\u52a0\u5bc6\uff0c\u4f46\u53ef\u4ee5\u4f7f\u7528 SQLCipher<\/strong> \u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u52a0\u5bc6\u3002<\/p>\n\n\n\n
                            1. \u6dfb\u52a0 SQLCipher \u4f9d\u8d56<\/strong><\/h4>\n\n\n\n
                            <dependency>\n    <groupId>net.zetetic<\/groupId>\n    <artifactId>sqlite-jdbc<\/artifactId>\n    <version>3.41.2.1<\/version>\n<\/dependency><\/code><\/pre>\n\n\n\n
                            2. \u8bbe\u7f6e\u6570\u636e\u5e93\u52a0\u5bc6<\/strong><\/h4>\n\n\n\n
                            try (Connection conn = DriverManager.getConnection(\"jdbc:sqlite:test.db\")) {\n    try (Statement stmt = conn.createStatement()) {\n        stmt.execute(\"PRAGMA key = 'my_secure_password';\");\n        System.out.println(\"\u6570\u636e\u5e93\u5df2\u52a0\u5bc6\uff01\");\n    }\n}<\/code><\/pre>\n\n\n\n
                            \n\n\n\n
                            11.5. SQLite \u6570\u636e\u5e93\u7684\u5b89\u5168\u6027\u4f18\u5316<\/strong><\/h3>\n\n\n\n
                            1. \u4f7f\u7528 WAL \u6a21\u5f0f<\/strong><\/h4>\n\n\n\n
                            stmt.execute(\"PRAGMA journal_mode=WAL;\");<\/code><\/pre>\n\n\n\n
                            \u53ef\u4ee5\u63d0\u9ad8\u5e76\u53d1\u6027\u80fd\uff0c\u540c\u65f6\u51cf\u5c11\u6570\u636e\u5e93\u6587\u4ef6\u635f\u574f\u7684\u98ce\u9669\u3002<\/p>\n\n\n\n
                            2. \u53ea\u5141\u8bb8\u53ea\u8bfb\u6a21\u5f0f<\/strong><\/h4>\n\n\n\n
                            Connection conn = DriverManager.getConnection(\"jdbc:sqlite:file:test.db?mode=ro\");<\/code><\/pre>\n\n\n\n
                            \u9632\u6b62\u8bef\u4fee\u6539\u6570\u636e\u3002<\/p>\n\n\n\n
                            3. \u7981\u7528\u5916\u90e8 SQL \u8bbf\u95ee<\/strong><\/h4>\n\n\n\n
                            stmt.execute(\"PRAGMA foreign_keys=ON;\");\nstmt.execute(\"PRAGMA secure_delete=ON;\");<\/code><\/pre>\n\n\n\n
                            \n\n\n\n
                            \u603b\u7ed3<\/strong><\/h2>\n\n\n\n
                            \u4e3b\u9898<\/th>\u5173\u952e\u6280\u672f<\/th><\/tr><\/thead>
                            \u591a\u7ebf\u7a0b\u652f\u6301<\/strong><\/td>PRAGMA threads=3;<\/code> + synchronized<\/code> \u5173\u952e\u5b57<\/td><\/tr>
                            \u4f7f\u7528 Hibernate<\/strong><\/td>\u914d\u7f6e hibernate.cfg.xml<\/code>\uff0c\u4f7f\u7528 SessionFactory<\/code><\/td><\/tr>
                            Spring Boot \u96c6\u6210<\/strong><\/td>spring-boot-starter-data-jpa<\/code> + JpaRepository<\/code><\/td><\/tr>
                            \u6570\u636e\u5e93\u52a0\u5bc6<\/strong><\/td>PRAGMA key = 'password';<\/code>\uff08SQLCipher\uff09<\/td><\/tr>
                            \u5b89\u5168\u4f18\u5316<\/strong><\/td>PRAGMA journal_mode=WAL;<\/code> + \u53ea\u8bfb\u6a21\u5f0f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                            \n\n\n\n
                            \u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                            \u5728 Java \u4e2d\uff0cSQLite \u901a\u5e38\u901a\u8fc7 JDBC\uff08Java Database Connectivity\uff09 \u8fdb […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76],"tags":[],"class_list":["post-2399","post","type-post","status-publish","format-standard","hentry","category-sqlite"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=2399"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2399\/revisions"}],"predecessor-version":[{"id":2400,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2399\/revisions\/2400"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}