Java将sqlite中blob数据读取到hdfs中代码是心啊

以下是Java将SQLite中blob数据读取到HDFS中的代码示例：

import java.io.*;
import java.sql.*;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;

public class SQLiteToHDFS {

    public static void main(String[] args) throws Exception {
        // SQLite连接配置
        Class.forName("org.sqlite.JDBC");
        Connection conn = DriverManager.getConnection("jdbc:sqlite:/path/to/sqlite.db");

        // HDFS连接配置
        Configuration conf = new Configuration();
        FileSystem fs = FileSystem.get(conf);
        Path outputPath = new Path("/output/path");
        OutputStream outStream = fs.create(outputPath);

        // 读取blob数据并写入HDFS
        PreparedStatement pstmt = conn.prepareStatement("SELECT blob_column FROM table");
        ResultSet rs = pstmt.executeQuery();
        while (rs.next()) {
            InputStream inStream = rs.getBinaryStream("blob_column");
            byte[] buffer = new byte[1024];
            int length;
            while ((length = inStream.read(buffer)) > 0) {
                outStream.write(buffer, 0, length);
            }
            inStream.close();
        }

        // 关闭连接和流
        rs.close();
        pstmt.close();
        outStream.close();
        conn.close();
    }
}

需要注意的是，需要将代码中的`/path/to/sqlite.db`和`/output/path`替换为实际的SQLite数据库和HDFS输出路径。另外，代码中使用了Hadoop的FileSystem API进行HDFS文件的创建和写入，需要先配置好Hadoop的环境。