Java API操作hbase数据案例

Java API操作hbase数据案例

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- 使用addResource()方法

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1. 将habse安装目录（./hbase/conf/）下的habse.xml文件放置在项目根目录下，项目结构如下：
   

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2 需修改windows的host地址，在hosts文件下添加
hdp3.site 192.168.×.×
hdp2.site 192.168.×.×
hdp1.site 192.168.×.×
hdp3.site,hdp2.site,hdp1.site为hbase对应的hadoop集群的host

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3 具体代码

import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.util.Bytes;

/**
 * HBase 工具类
 */
@SuppressWarnings("deprecation")
public class HBaseUtil {
   
   

    private static HBaseConfiguration conf = null;

    static {
        conf = new HBaseConfiguration();
        conf.addResource("hbase-site.xml");
    }

    /**
     * 建立表格
     * 
     * @param tableName
     * @param family
     *            列簇数组
     * 
     */
    @SuppressWarnings("resource")
    public static void creatTable(String tableName, String[] family) {
        try {
            HBaseAdmin admin = new HBaseAdmin(conf);
            HTableDescriptor desc = new HTableDescriptor(tableName.getBytes("utf-8"));
            for (int i = 0; i < family.length; i++) {
                desc.addFamily(new HColumnDescriptor(family[i]));
            }