hbase 及 hdfs Java api连接的建立

网上看到很多 Java api连接的建立方案，感觉有点繁琐，后查阅文档后得到最简单的两种方案

方案一：将要连接的hadoop集群中 hdfs-site.xml  core-site.xml hbse-site.xml （连接hbase用）复制到RESOUCES 下，

获取hdfs 文件系统

Configuration configuration =  new Configuration();
FileSystem fs = FileSystem.get(configuration);

获取hbase 操作类

Configuration configuration = HBaseConfiguration.create();
Connection connection = ConnectionFactory.createConnection(configuration);
Admin admin = connection.getAdmin();

方案二：将要连接的hadoop集群中 hdfs-site.xml  core-site.xml hbse-site.xml （连接hbase用）复制到任意目录，加进配置中，

获取hdfs 文件系统

Configuration configuration =  new Configuration();

configuration.addResource(new FileInputStream("D:\\soft\\apps\\hadoop-2.7.7\\etc\\hadoop\\core-site.xml"));//文件路径为本地路径
configuration.addResource(new FileInputStream("D:\\soft\\apps\\hadoop-2.7.7\\etc\\hadoop\\hdfs-site.xml"));
FileSystem fs = FileSystem.get(configuration);

获取hbase 操作类

Configuration configuration = HBaseConfiguration.create();
configuration.addResource(new FileInputStream("D:\\soft\\apps\\hadoop-2.7.7\\etc\\hadoop\\core-site.xml"));
configuration.addResource(new FileInputStream("D:\\soft\\apps\\hadoop-2.7.7\\etc\\hadoop\\hdfs-site.xml"));
configuration.addResource(new FileInputStream("D:\\soft\\apps\\hbase-1.4.9\\conf\\hbase-site.xml"));
Connection connection = ConnectionFactory.createConnection(configuration);
Admin admin = connection.getAdmin();

 

这里附上hbase java api操作代码 见 https://github.com/lbovery/hadoopdemo