一、环境准备

在pom中添加依赖

<dependency>
 <groupId>org.apache.hbase</groupId>
 <artifactId>hbase-server</artifactId>
 <version>1.3.1</version>
</dependency>
<dependency>
 <groupId>org.apache.hbase</groupId>
 <artifactId>hbase-client</artifactId>
 <version>1.3.1</version>
</dependency>

二、获取 Configuration 对象

public static Configuration conf;
static{
//使用 HBaseConfiguration 的单例方法实例化
conf = HBaseConfiguration.create();
conf.set("hbase.zookeeper.quorum", "192.166.9.102");
conf.set("hbase.zookeeper.property.clientPort", "2181");
}

 

三、判断表是否存在

public static boolean isTableExist(String tableName) throws 
MasterNotRunningException,
ZooKeeperConnectionException, IOException{
//在 HBase 中管理、访问表需要先创建 HBaseAdmin 对象
Connection connection = ConnectionFactory.createConnection(conf);
//HBaseAdmin admin = (HBaseAdmin) connection.getAdmin();
HBaseAdmin admin = new HBaseAdmin(conf);
return admin.tableExists(tableName);
}

四、创建表

public static void createTable(String tableName, String... 
columnFamily) throws
MasterNotRunningException, ZooKeeperConnectionException, 
IOException{
HBaseAdmin admin = new HBaseAdmin(conf);
//判断表是否存在
if(isTableExist(tableName)){
System.out.println("表" + tableName + "已存在");
//System.exit(0);
}else{
//创建表属性对象,表名需要转字节
HTableDescriptor descriptor = new 
HTableDescriptor(TableName.valueOf(tableName));
//创建多个列族
for(String cf : columnFamily){
descriptor.addFamily(new HColumnDescriptor(cf));
}
//根据对表的配置，创建表
admin.createTable(descriptor);
System.out.println("表" + tableName + "创建成功！");
}
}

五、删除表

public static void dropTable(String tableName) throws 
MasterNotRunningException,
ZooKeeperConnectionException, IOException{
HBaseAdmin admin = new HBaseAdmin(conf);
if(isTableExist(tableName)){
admin.disableTable(tableName);
admin.deleteTable(tableName);
System.out.println("表" + tableName + "删除成功！");
}else{
System.out.println("表" + tableName + "不存在！");
}

六、向表中插入数据

public static void addRowData(String tableName, String rowKey, 
String columnFamily, String
column, String value) throws IOException{
//创建 HTable 对象
HTable hTable = new HTable(conf, tableName);
//向表中插入数据
Put put = new Put(Bytes.toBytes(rowKey));
//向 Put 对象中组装数据
put.add(Bytes.toBytes(columnFamily), Bytes.toBytes(column), 
Bytes.toBytes(value));
hTable.put(put);
hTable.close();
System.out.println("插入数据成功");
}

七、删除多行数据

public static void deleteMultiRow(String tableName, String... rows) 
throws IOException{
HTable hTable = new HTable(conf, tableName);
List<Delete> deleteList = new ArrayList<Delete>();
for(String row : rows){
Delete delete = new Delete(Bytes.toBytes(row));
deleteList.add(delete);
}
hTable.delete(deleteList);
hTable.close();
}

八、获取所有数据

public static void getAllRows(String tableName) throws IOException{
HTable hTable = new HTable(conf, tableName);
//得到用于扫描 region 的对象
Scan scan = new Scan();
//使用 HTable 得到 resultcanner 实现类的对象
ResultScanner resultScanner = hTable.getScanner(scan);
for(Result result : resultScanner){
Cell[] cells = result.rawCells();
for(Cell cell : cells){
//得到 rowkey
System.out.println(" 行 键 :" +
Bytes.toString(CellUtil.cloneRow(cell)));
//得到列族
System.out.println(" 列 族 " + 
Bytes.toString(CellUtil.cloneFamily(cell)));
System.out.println(" 列 :" + 
Bytes.toString(CellUtil.cloneQualifier(cell)));
System.out.println(" 值 :" + 
Bytes.toString(CellUtil.cloneValue(cell)));
}
}
}

九、获取某一行数据

public static void getRow(String tableName, String rowKey) throws 
IOException{
HTable table = new HTable(conf, tableName);
Get get = new Get(Bytes.toBytes(rowKey));
//get.setMaxVersions();显示所有版本
 //get.setTimeStamp();显示指定时间戳的版本
Result result = table.get(get);
for(Cell cell : result.rawCells()){
System.out.println(" 行 键 :" +
Bytes.toString(result.getRow()));
System.out.println(" 列 族 " + 
Bytes.toString(CellUtil.cloneFamily(cell)));
System.out.println(" 列 :" + 
Bytes.toString(CellUtil.cloneQualifier(cell)));
System.out.println(" 值 :" + 
Bytes.toString(CellUtil.cloneValue(cell)));
System.out.println("时间戳:" + cell.getTimestamp());
}
}

十、获取某一行指定“列族:列”的数据

public static void getRowQualifier(String tableName, String rowKey, 
String family, String
qualifier) throws IOException{
HTable table = new HTable(conf, tableName);
Get get = new Get(Bytes.toBytes(rowKey));
get.addColumn(Bytes.toBytes(family), 
Bytes.toBytes(qualifier));
Result result = table.get(get);
for(Cell cell : result.rawCells()){
System.out.println(" 行 键 :" + 
Bytes.toString(result.getRow()));
System.out.println(" 列 族 " + 
Bytes.toString(CellUtil.cloneFamily(cell)));
System.out.println(" 列 :" + 
Bytes.toString(CellUtil.cloneQualifier(cell)));
System.out.println(" 值 :" + 
Bytes.toString(CellUtil.cloneValue(cell)));
}
}