> For the complete documentation index, see [llms.txt](https://tbds-book.gitbook.io/tbds/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tbds-book.gitbook.io/tbds/zu-jian-fang-wen-kai-fa/dai-ma-fang-wen-zu-jian-demos/hbase.md).

# hbase

```
package com.tencent.hbase;
import java.io.Closeable;
```

```
import java.io.IOException;  

import org.apache.hadoop.conf.Configuration;  
import org.apache.hadoop.hbase.HBaseConfiguration;  
import org.apache.hadoop.hbase.client.Connection;  
import org.apache.hadoop.hbase.client.ConnectionFactory;  
import org.apache.hadoop.hbase.client.HBaseAdmin;

public class HBaseClient { 

  public static Connection createconnection(String secureId, String secureKey,String zk) {
    Configuration configuration = HBaseConfiguration.create();  
    configuration.set("hbase.zookeeper.quorum", zk);  
    configuration.set("zookeeper.znode.parent", "/hbase-unsecure");  

    // 认证时，在创建HBase连接之前，在configuration设置以下两个参数，其他使用方法和HBase开源完全一样,hbase其他接口的使用方法类似，只需要增加以下两个认证参数即可
    configuration.set("hbase.security.authentication.tbds.secureid", secureId);  
    configuration.set("hbase.security.authentication.tbds.securekey", secureKey);  

    try {  
        return ConnectionFactory.createConnection(configuration);  
    } catch (IOException e) {  
        e.printStackTrace(); 
        return null;
    }
  }  

  public static void close(Closeable closeable){
    if (closeable != null) {
      try {
        closeable.close();
      } catch (Exception e) {e.printStackTrace();}
    }
  }

  @SuppressWarnings("deprecation")
  public static void main(String[] args) throws Exception {  
      if (args == null || args.length != 3) {
        System.out.println("Usage: seucreId secureKey zkInfo(eg. zkIp1:port,zkIp2:port,zkIp3:port)");
        System.exit(1);
      }

      Connection connection = null;
      HBaseAdmin hbaseAdmin = null;
      try {
        connection = createconnection(args[0], args[1],args[2]);
        if (connection == null) {
          return;
        }

        hbaseAdmin = new HBaseAdmin(connection);
        String[] tableNames = hbaseAdmin.getTableNames();

        System.out.println("Scanning tables...");
        for (String tableName : tableNames) {
          System.out.println("  found: " + tableName);
        }
      } catch (Exception e) {
        e.printStackTrace();
      }finally{
        close(hbaseAdmin);
        close(connection);
      }
  }  
}
```