Hbase的API（重点）

开发javaAPI操作HBase表数据

1、创建表myuser

public static   void createTable() throws IOException {
     Configuration conf =new Configuration();
    //连接hbase集群不需要指定hbase主节点的ip地址和端口号
    conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
     //创建连接对象
    Connection connection = ConnectionFactory.createConnection(conf);
    //获取连接对象，创建一张表
    //获取管理员对象，来对数据库进行DDL的操作
    Admin admin = connection.getAdmin();
     //指定我们的表名
    TableName myuser = TableName.valueOf("myuser");
    HTableDescriptor hTableDescriptor = new HTableDescriptor(myuser);
     //指定两个列族
    HColumnDescriptor f1 = new HColumnDescriptor("f1");
    HColumnDescriptor f2 = new HColumnDescriptor("f2");
    hTableDescriptor.addFamily(f1);
    hTableDescriptor.addFamily(f2);

    admin.createTable(hTableDescriptor);
    admin.close();
    connection.close();

}

2、向表中添加数据
/**
* 插入数据
*/

 public  void  addDatas() throws IOException {
        //获取连接
      Configuration conf =new Configuration();

        conf.set("hbase.zookeeper.quorum", "node01:2181,node02:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        //获取表
        Table myuser = connection.getTable(TableName.valueOf("myuser"));
        //创建put对象，并指定rowkey
        Put put = new Put("0001".getBytes());
        put.addColumn("f1".getBytes(),"id".getBytes(), Bytes.toBytes(1));
        put.addColumn("f1".getBytes(),"name".getBytes(), Bytes.toBytes("张三"));
        put.addColumn("f1".getBytes(),"age".getBytes(), Bytes.toBytes(18));

        put.addColumn("f2".getBytes(),"address".getBytes(), Bytes.toBytes("地球人"));
        put.addColumn("f2".getBytes(),"phone".getBytes(), Bytes.toBytes("15874102589"));
        //插入数据
        myuser.put(put);
        //关闭表
        myuser.close();

    }

3、查询数据
初始化一批数据到HBase当中用于查询

   public void insertBatchData() throws IOException {

        //获取连接
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum", "node01:2181,node02:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        //获取表
        Table myuser = connection.getTable(TableName.valueOf("myuser"));
        //创建put对象，并指定rowkey
        Put put = new Put("0002".getBytes());
        put.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(1));
        put.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("曹操"));
        put.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(30));
        put.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
        put.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("沛国谯县"));
        put.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("16888888888"));
        put.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("helloworld"));

        Put put2 = new Put("0003".getBytes());
        put2.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(2));
        put2.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("刘备"));
        put2.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(32));
        put2.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
        put2.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("幽州涿郡涿县"));
        put2.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("17888888888"));
        put2.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("talk is cheap , show me the code"));


        Put put3 = new Put("0004".getBytes());
        put3.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(3));
        put3.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("孙权"));
        put3.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(35));
        put3.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
        put3.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("下邳"));
        put3.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("12888888888"));
        put3.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("what are you 弄啥嘞！"));

        Put put4 = new Put("0005".getBytes());
        put4.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(4));
        put4.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("诸葛亮"));
        put4.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(28));
        put4.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
        put4.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("四川隆中"));
        put4.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("14888888888"));
        put4.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("出师表你背了嘛"));

        Put put5 = new Put("0005".getBytes());
        put5.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(5));
        put5.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("司马懿"));
        put5.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(27));
        put5.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
        put5.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("哪里人有待考究"));
        put5.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("15888888888"));
        put5.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("跟诸葛亮死掐"));


        Put put6 = new Put("0006".getBytes());
        put6.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(5));
        put6.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("xiaobubu—吕布"));
        put6.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(28));
        put6.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
        put6.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("内蒙人"));
        put6.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("15788888888"));
        put6.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("貂蝉去哪了"));

        List listPut = new ArrayList();
        listPut.add(put);
        listPut.add(put2);
        listPut.add(put3);
        listPut.add(put4);
        listPut.add(put5);
        listPut.add(put6);

        myuser.put(listPut);
        myuser.close();
    }

按照rowkey进行查询获取所有列的所有值 查询主键rowkey为0003的人

/**
* 查询数据，按照主键id进行查询
*/

 public  void searchData() throws IOException {
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        Table myuser = connection.getTable(TableName.valueOf("myuser"));

        Get get = new Get(Bytes.toBytes("0003"));
        Result result = myuser.get(get);
        Cell[] cells = result.rawCells();
        //获取所有的列名称以及列的值
        for (Cell cell : cells) {
            //注意，如果列属性是int类型，那么这里就不会显示
            
if (Bytes.toString(CellUtil.cloneQualifier(cell)).equals("id" )|| Bytes.toString(CellUtil.cloneQualifier(cell)).equals("age")){
    System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
    System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
    System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
    System.out.println(Bytes.toInt(CellUtil.cloneValue(cell)));
}else {
    System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
    System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
    System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
    System.out.println(Bytes.toString(CellUtil.cloneValue(cell)));
}
        }

        myuser.close();
}

按照rowkey查询指定列族下面的指定列的值

 public  static void searchdata2() throws IOException{
    Configuration conf=new Configuration();
    conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
    Connection connection = ConnectionFactory.createConnection(conf);

    Table myuser = connection.getTable(TableName.valueOf("myuser"));

    Get get=new Get("0003".getBytes());
// get.addFamily("f1".getBytes());

    get.addColumn("f1".getBytes(),"name".getBytes());
    Result result = myuser.get(get);
    Cell[] cells = result.rawCells();
    for (Cell cell : cells) { 
        if (Bytes.toString(CellUtil.cloneQualifier(cell)).equals("id" )|| Bytes.toString(CellUtil.cloneQualifier(cell)).equals("age")){
            System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
            System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
            System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
            System.out.println(Bytes.toInt(CellUtil.cloneValue(cell)));
        }else {
            System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
            System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
            System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
            System.out.println(Bytes.toString(CellUtil.cloneValue(cell)));
        }


    }


}
 

通过startRowKey和endRowKey进行扫描

/**
* 通过startRowKey和endRowKey进行扫描查询
*/

     public  static void scanrowkey() throws IOException{
        Configuration conf=new Configuration();
        conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);

        Table myuser = connection.getTable(TableName.valueOf("myuser"));

        Scan scan =new Scan();
        scan.setStartRow("0002".getBytes());
        scan.setStopRow("0006".getBytes());

        ResultScanner scanner = myuser.getScanner(scan);
        for (Result result : scanner) {
            System.out.println("rowkey   "+Bytes.toString(result.getRow()));
/*
            System.out.println(Bytes.toInt(result.getValue("f1".getBytes(),"id".getBytes())));
            System.out.println(Bytes.toString(result.getValue("f1".getBytes(),"name".getBytes())));
            System.out.println(Bytes.toInt(result.getValue("f1".getBytes(),"age".getBytes())));
*/

            Cell[] cells = result.rawCells();
            for (Cell cell : cells) {
                if (Bytes.toString(CellUtil.cloneQualifier(cell)).equals("id" )|| Bytes.toString(CellUtil.cloneQualifier(cell)).equals("age")){
                    System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
                    System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
                    System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
                    System.out.println(Bytes.toInt(CellUtil.cloneValue(cell)));
                }else {
                    System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
                    System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
                    System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
                    System.out.println(Bytes.toString(CellUtil.cloneValue(cell)));
                }
            }


        }

    }

通过scan进行全表扫描

/**
* 全表扫描
*/

 public  static void scanrow() throws IOException{
    Configuration conf=new Configuration();
    conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
    Connection connection = ConnectionFactory.createConnection(conf);

    Table myuser = connection.getTable(TableName.valueOf("myuser"));

    Scan scan =new Scan();

    ResultScanner scanner = myuser.getScanner(scan);
    for (Result result : scanner) {
        System.out.println("rowkey   "+Bytes.toString(result.getRow()));
        System.out.println(Bytes.toInt(result.getValue("f1".getBytes(),"id".getBytes())));
        System.out.println(Bytes.toString(result.getValue("f1".getBytes(),"name".getBytes())));
        System.out.println(Bytes.toInt(result.getValue("f1".getBytes(),"age".getBytes())));

   /*     Cell[] cells = result.rawCells();
        for (Cell cell : cells) {
            if (Bytes.toString(CellUtil.cloneQualifier(cell)).equals("id" )|| Bytes.toString(CellUtil.cloneQualifier(cell)).equals("age")){
                System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
                System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
                System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
                System.out.println(Bytes.toInt(CellUtil.cloneValue(cell)));
            }else {
                System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
                System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
                System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
                System.out.println(Bytes.toString(CellUtil.cloneValue(cell)));
            }
        }*/


    }

}

4、过滤器查询

过滤器的类型很多，但是可以分为两大类——比较过滤器，专用过滤器
过滤器的作用是在服务端判断数据是否满足条件，然后只将满足条件的数据返回给客户端；

hbase过滤器的比较运算符：
LESS <
LESS_OR_EQUAL <=
EQUAL =
NOT_EQUAL <>
GREATER_OR_EQUAL >=
GREATER >
NO_OP 排除所有

Hbase过滤器的专用过滤器（指定比较机制）：
BinaryComparator 按字节索引顺序比较指定字节数组，采用Bytes.compareTo(byte[])
BinaryPrefixComparator 跟前面相同，只是比较左端的数据是否相同
NullComparator 判断给定的是否为空
BitComparator 按位比较
RegexStringComparator 提供一个正则的比较器，仅支持 EQUAL 和非EQUAL
SubstringComparator 判断提供的子串是否出现在value中。

1、

比较过滤器

1、rowKey过滤器RowFilter
通过RowFilter过滤比rowKey 0003小的所有值出来

/**
* hbase行键过滤器RowFilter
*/

   public  void rowKeyFilter() throws IOException {
        //获取连接
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        Table myuser = connection.getTable(TableName.valueOf("myuser"));

        Scan scan = new Scan();
        RowFilter rowFilter = new RowFilter(CompareFilter.CompareOp.LESS_OR_EQUAL, new BinaryComparator(Bytes.toBytes("0003")));

        scan.setFilter(rowFilter);
        ResultScanner resultScanner = myuser.getScanner(scan);
        for (Result result : resultScanner) {
            //获取rowkey
            System.out.println(Bytes.toString(result.getRow()));

            //指定列族以及列打印列当中的数据出来
            System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
            System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "age".getBytes())));
            System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
        }
        myuser.close();

    }

2、列族过滤器FamilyFilter
查询比f2列族小的所有的列族内的数据
/**
* hbase列族过滤器FamilyFilter
*/

  public  void familyFilter() throws IOException {
        //获取连接
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        Table myuser = connection.getTable(TableName.valueOf("myuser"));
        Scan scan = new Scan();
        FamilyFilter familyFilter = new FamilyFilter(CompareFilter.CompareOp.LESS, new SubstringComparator("f2"));
        scan.setFilter(familyFilter);
        ResultScanner resultScanner = myuser.getScanner(scan);
        for (Result result : resultScanner) {
            //获取rowkey
            System.out.println(Bytes.toString(result.getRow()));
            //指定列族以及列打印列当中的数据出来
            System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
            System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "age".getBytes())));
            System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
        }
        myuser.close();
    }

3、列过滤器QualifierFilter 只查询name列的值

/**
* hbase列过滤器
*/

   public  void qualifierFilter() throws IOException {
        //获取连接
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        Table myuser = connection.getTable(TableName.valueOf("myuser"));
        Scan scan = new Scan();
        QualifierFilter qualifierFilter = new QualifierFilter(CompareFilter.CompareOp.EQUAL, new SubstringComparator("name"));
        scan.setFilter(qualifierFilter);
        ResultScanner resultScanner = myuser.getScanner(scan);
        for (Result result : resultScanner) {
            //获取rowkey
            System.out.println(Bytes.toString(result.getRow()));
            //指定列族以及列打印列当中的数据出来
        //    System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
            System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
        }
        myuser.close();
    }

4、列值过滤器ValueFilter
查询所有列当中包含8的数据
/**
* hbase值过滤器
* 查询包含8的列值
*/

 public  void valueFilter() throws IOException {
        //获取连接
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        Table myuser = connection.getTable(TableName.valueOf("myuser"));
        Scan scan = new Scan();
        ValueFilter valueFilter = new ValueFilter(CompareFilter.CompareOp.EQUAL, new SubstringComparator("8"));

        scan.setFilter(valueFilter);
        ResultScanner resultScanner = myuser.getScanner(scan);
        for (Result result : resultScanner) {
            //获取rowkey
            System.out.println(Bytes.toString(result.getRow()));
            //指定列族以及列打印列当中的数据出来
            //    System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
            System.out.println(Bytes.toString(result.getValue("f2".getBytes(), "phone".getBytes())));
        }
        myuser.close();
    }

2、专用过滤器

1、单列值过滤器 SingleColumnValueFilter
SingleColumnValueFilter会返回满足条件的整列值的所有字段

/**
* 单列值过滤器，返回满足条件的整行数据
*/

   public void singleColumnFilter() throws IOException {
        //获取连接
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        Table myuser = connection.getTable(TableName.valueOf("myuser"));
        Scan scan = new Scan();
        SingleColumnValueFilter singleColumnValueFilter = new SingleColumnValueFilter("f1".getBytes(), "name".getBytes(), CompareFilter.CompareOp.EQUAL, "刘备".getBytes());
        scan.setFilter(singleColumnValueFilter);
        ResultScanner resultScanner = myuser.getScanner(scan);
        for (Result result : resultScanner) {
            //获取rowkey
            System.out.println(Bytes.toString(result.getRow()));
            //指定列族以及列打印列当中的数据出来
            System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
            System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
            System.out.println(Bytes.toString(result.getValue("f2".getBytes(), "phone".getBytes())));
        }
        myuser.close();
    }

2、列值排除过滤器SingleColumnValueExcludeFilter
与SingleColumnValueFilter相反，会排除掉指定的列，其他的列全部返回

3、rowkey前缀过滤器PrefixFilter
查询以00开头的所有前缀的rowkey
/**
* 行键前缀过滤器
*/

   public void preFilter() throws IOException {

        //获取连接
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        Table myuser = connection.getTable(TableName.valueOf("myuser"));
        Scan scan = new Scan();
        PrefixFilter prefixFilter = new PrefixFilter("00".getBytes());
        scan.setFilter(prefixFilter);
        ResultScanner resultScanner = myuser.getScanner(scan);
        for (Result result : resultScanner) {
            //获取rowkey
            System.out.println(Bytes.toString(result.getRow()));
            //指定列族以及列打印列当中的数据出来
            System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
            System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
            System.out.println(Bytes.toString(result.getValue("f2".getBytes(), "phone".getBytes())));
        }
        myuser.close();

    }

4、分页过滤器PageFilter 通过pageFilter实现分页过滤器

    public void pageFilter2() throws IOException {
        //获取连接
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum", "node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        Table myuser = connection.getTable(TableName.valueOf("myuser"));
        int pageNum = 3;
        int pageSize = 2;
        Scan scan = new Scan();
        if (pageNum == 1) {
            PageFilter filter = new PageFilter(pageSize);
            scan.setStartRow(Bytes.toBytes(""));
            scan.setFilter(filter);
            scan.setMaxResultSize(pageSize);
            ResultScanner scanner = myuser.getScanner(scan);
            for (Result result : scanner) {
                //获取rowkey
                System.out.println(Bytes.toString(result.getRow()));
                //指定列族以及列打印列当中的数据出来
//            System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
                System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
                //System.out.println(Bytes.toString(result.getValue("f2".getBytes(), "phone".getBytes())));
            }

        }else{
            String startRowKey ="";
            PageFilter filter = new PageFilter((pageNum - 1) * pageSize + 1  );
            scan.setStartRow(startRowKey.getBytes());
            scan.setMaxResultSize((pageNum - 1) * pageSize + 1);
            scan.setFilter(filter);
            ResultScanner scanner = myuser.getScanner(scan);
            for (Result result : scanner) {
                byte[] row = result.getRow();
                startRowKey =  new String(row);
            }
            Scan scan2 = new Scan();
            scan2.setStartRow(startRowKey.getBytes());
            scan2.setMaxResultSize(Long.valueOf(pageSize));
            PageFilter filter2 = new PageFilter(pageSize);
            scan2.setFilter(filter2);

            ResultScanner scanner1 = myuser.getScanner(scan2);
            for (Result result : scanner1) {
                byte[] row = result.getRow();
                System.out.println(new String(row));
            }
        }
        myuser.close();
    }

3、多过滤器综合查询FilterList
需求：使用SingleColumnValueFilter查询f1列族，name为刘备的数据，并且同时满足rowkey的前缀以00开头的数据（PrefixFilter）

/**
* 多过滤器组合使用
*/

 public void manyFilter() throws IOException {
        //获取连接
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum", "node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        Table myuser = connection.getTable(TableName.valueOf("myuser"));
        Scan scan = new Scan();
        FilterList filterList = new FilterList();

        SingleColumnValueFilter singleColumnValueFilter = new SingleColumnValueFilter("f1".getBytes(), "name".getBytes(), CompareFilter.CompareOp.EQUAL, "刘备".getBytes());
        PrefixFilter prefixFilter = new PrefixFilter("00".getBytes());
        filterList.addFilter(singleColumnValueFilter);
        filterList.addFilter(prefixFilter);
        scan.setFilter(filterList);
        ResultScanner scanner = myuser.getScanner(scan);
        for (Result result : scanner) {
            //获取rowkey
            System.out.println(Bytes.toString(result.getRow()));
            //指定列族以及列打印列当中的数据出来
//            System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
            System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
            //System.out.println(Bytes.toString(result.getValue("f2".getBytes(), "phone".getBytes())));
        }
        myuser.close();

    }

5、根据rowkey删除数据

/**
* 删除数据
*/

 public  void  deleteByRowKey() throws IOException {
        //获取连接
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        Table myuser = connection.getTable(TableName.valueOf("myuser"));
        Delete delete = new Delete("0001".getBytes());
        myuser.delete(delete);
        myuser.close();
    }

6、删除表操作

 public void  deleteTable() throws IOException {
        //获取连接
        Configuration conf =new Configuration();
        conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
        Connection connection = ConnectionFactory.createConnection(conf);
        Admin admin = connection.getAdmin();
        admin.disableTable(TableName.valueOf("myuser"));
        admin.deleteTable(TableName.valueOf("myuser"));
        admin.close();
    }