overview

1. Importing jar packages
2. Testing
3. Abnormal handling

First of all, the HBase Build, then start Zookeeper,Hadoop HBase cluster

1. Importing jar packages

Get ready:
1.CentOS7
2.Zookeeper Cluster
3. Hadoop 2.7.3 Cluster
4. HBase 2.0.0 cluster
5.eclipse

Build a java project in eclipse where you create a new lib folder to store jar packages
Import all jar packages under lib in the hbase directory into the project

2. Testing

Then build a package, build a TestHbase class

package com.hd.hbase;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Get;
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.client.Table;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class TestHbase {
	private Configuration conf = null;
	private Connection conn = null;
	private Admin admin = null;
	private Table table = null;
	
	@Before
	public void createConf() throws IOException{
		//Solve exceptions, you can do without
		System.setProperty("hadoop.home.dir","D:\\software\\01-Software information\\hadoop-common-2.2.0-bin-master");
		conf = HBaseConfiguration.create();
		//Setting up the zk cluster address, you need to modify the hosts file under windows
		conf.set("hbase.zookeeper.quorum","master:2181,slave1:2181,slave2:2181");
		//Connect
		conn = ConnectionFactory.createConnection(conf);
	}
	

	@Test
	public void createTable() throws IOException{
		//Get the table management class
		admin = conn.getAdmin();
		//Definition table
		HTableDescriptor hTableDescriptor = new HTableDescriptor(TableName.valueOf("person"));
		//Definition Column Family
		HColumnDescriptor hColumnDescriptor = new HColumnDescriptor("info");
		//Adding column families to tables
		hTableDescriptor.addFamily(hColumnDescriptor);
		//Perform table building operations
		admin.createTable(hTableDescriptor);
	
	}
	@Test
	public void put() throws IOException{

		//Get table objects
		table = conn.getTable(TableName.valueOf("person"));
		//Create put objects
		Put put = new Put("p1".getBytes());
		//Add columns
		put.addColumn("info".getBytes(), "name".getBytes(), "haha".getBytes());
		//Add put objects to tables
		table.put(put);
		
	}
	@Test
	public void get() throws IOException{
		//Get table objects
		table = conn.getTable(TableName.valueOf("person"));
		//Instantiate get with line keys
		Get get = new Get("p1".getBytes());
		//Increasing Names and Conditions of Naming
		get.addColumn("info".getBytes(), "name".getBytes());
		//Execution, return result
		Result result = table.get(get);
		//Remove the result
		String valStr = Bytes.toString(result.getValue("info".getBytes(), "name".getBytes()));
		System.out.println(valStr);
		
	}
	@Test
	public void scan() throws IOException{
		//Get table objects
		table = conn.getTable(TableName.valueOf("person"));
		//Initialize the scan example
		Scan scan = new Scan();
		//Increasing filtration conditions
		scan.addColumn("info".getBytes(), "name".getBytes());
		//Return results
		ResultScanner rss = table.getScanner(scan);
		//Iterative extraction results
		for (Result result : rss) {
			String valStr = Bytes.toString(result.getValue("info".getBytes(), "name".getBytes()));
			System.out.println(valStr);
		}
		
	}
	@Test
	public void del() throws IOException{
		//Get table objects
		table = conn.getTable(TableName.valueOf("person"));
		//Instantiating Delete instances with line keys
		Delete del = new Delete("p1".getBytes());
		//Execute deletion
		table.delete(del);
	}
	@After
	public void close() throws IOException{
		//Close the connection
		if(admin!=null){
			admin.close();
		}
		if(table!=null){
			table.close();
		}
		if(conn!=null){
			conn.close();
		}		
	}
	
}

Modify hosts files under Windows
Find this path C: Windows System32 drivers etc
Add the host ip and host name of your hbase cluster at the end of the hosts file

Then double-click the method name separately, and right-click run Junit to test each method

3. Abnormal handling

among

	System.setProperty("hadoop.home.dir","D:\\software\\01-Software information\\hadoop-common-2.2.0-bin-master");

To resolve the exception that winutils.exe file cannot be found in bin directory

2018-10-26 19:19:10,309 ERROR [main] util.Shell (Shell.java:getWinUtilsPath(400)) - Failed to locate the winutils binary in the hadoop binary path
java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries.
	at org.apache.hadoop.util.Shell.getQualifiedBinPath(Shell.java:382)
	at org.apache.hadoop.util.Shell.getWinUtilsPath(Shell.java:397)
	at org.apache.hadoop.util.Shell.<clinit>(Shell.java:390)
	at org.apache.hadoop.util.StringUtils.<clinit>(StringUtils.java:80)

In fact, this exception can be connected to hbase operation normally even if it is not handled, but it is better to solve it, because the bin directory under Hadoop 2.7.3 does not have this file, so I found a version of Hadoop 2.2.0 on the Internet, the link: https://pan.baidu.com/s/1koyq-8D5Z7u88DBtHGNe7g
Extraction code: 4ut9

After decompression, only the bin directory fills its path into System.setProperty().