通过脚本读取SQL CLOB

import java.sql.*;

public class ReadClobExample {
    public static void main(String[] args) {
        String url = "jdbc:oracle:thin:@localhost:1521:xe";
        String username = "your_username";
        String password = "your_password";
        
        Connection conn = null;
        PreparedStatement stmt = null;
        ResultSet rs = null;
        
        try {
            // 1. 连接数据库
            conn = DriverManager.getConnection(url, username, password);
            
            // 2. 执行SQL查询
            String sql = "SELECT clob_column FROM your_table";
            stmt = conn.prepareStatement(sql);
            rs = stmt.executeQuery();
            
            // 3. 读取CLOB字段
            while (rs.next()) {
                Clob clob = rs.getClob("clob_column");
                String clobData = clob.getSubString(1, (int) clob.length());
                System.out.println(clobData);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            // 4. 关闭资源
            try {
                if (rs != null) rs.close();
                if (stmt != null) stmt.close();
                if (conn != null) conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}