如何使用Java导出Hbase表？

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.*;

import java.io.FileWriter;
import java.io.IOException;

public class HbaseExport {
    public static void main(String[] args) {
        Configuration conf = HBaseConfiguration.create();
        conf.set("hbase.zookeeper.quorum", "localhost");
        conf.set("hbase.zookeeper.property.clientPort", "2181");

        try (Connection connection = ConnectionFactory.createConnection(conf);
             Admin admin = connection.getAdmin()) {

            String tableName = "your_table_name";

            if (admin.tableExists(TableName.valueOf(tableName))) {
                TableDescriptorBuilder tableDescriptorBuilder = TableDescriptorBuilder.newBuilder(TableName.valueOf(tableName));
                TableDescriptor tableDescriptor = tableDescriptorBuilder.build();
                RegionLocator regionLocator = connection.getRegionLocator(TableName.valueOf(tableName));
                RegionLocator.RegionLocation[] regionLocations = regionLocator.getAllRegionLocations();

                for (RegionLocator.RegionLocation regionLocation : regionLocations) {
                    byte[] startKey = regionLocation.getRegion().getStartKey();
                    byte[] endKey = regionLocation.getRegion().getEndKey();

                    Scan scan = new Scan();
                    scan.withStartRow(startKey);
                    scan.withStopRow(endKey);

                    try (ResultScanner scanner = connection.getTable(TableName.valueOf(tableName)).getScanner(scan);
                         FileWriter writer = new FileWriter("exported_data.txt", true)) {

                        for (Result result : scanner) {
                            // 处理每一行的数据
                            String rowKey = new String(result.getRow());
                            String value = new String(result.getValue("column_family".getBytes(), "column_qualifier".getBytes()));
                            String line = rowKey + "\t" + value + "\n";
                            writer.write(line);
                        }
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            } else {
                System.out.println("Table does not exist.");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}