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Hbase的测试代码是怎样的

发表于:2024-09-30 作者:千家信息网编辑
千家信息网最后更新 2024年09月30日,这篇文章主要介绍"Hbase的测试代码是怎样的",在日常操作中,相信很多人在Hbase的测试代码是怎样的问题上存在疑惑,小编查阅了各式资料,整理出简单好用的操作方法,希望对大家解答"Hbase的测试代
千家信息网最后更新 2024年09月30日Hbase的测试代码是怎样的

这篇文章主要介绍"Hbase的测试代码是怎样的",在日常操作中,相信很多人在Hbase的测试代码是怎样的问题上存在疑惑,小编查阅了各式资料,整理出简单好用的操作方法,希望对大家解答"Hbase的测试代码是怎样的"的疑惑有所帮助!接下来,请跟着小编一起来学习吧!

import java.io.IOException;import java.util.ArrayList;import java.util.List;import org.apache.hadoop.conf.Configuration;import org.apache.hadoop.hbase.Cell;import org.apache.hadoop.hbase.CellUtil;import org.apache.hadoop.hbase.HBaseConfiguration;import org.apache.hadoop.hbase.HColumnDescriptor;import org.apache.hadoop.hbase.HTableDescriptor;import org.apache.hadoop.hbase.MasterNotRunningException;import org.apache.hadoop.hbase.TableName;import org.apache.hadoop.hbase.ZooKeeperConnectionException;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.filter.CompareFilter.CompareOp;import org.apache.hadoop.hbase.filter.Filter;import org.apache.hadoop.hbase.filter.FilterList;import org.apache.hadoop.hbase.filter.SingleColumnValueFilter;import org.apache.hadoop.hbase.util.Bytes;public class HBaseTest {        public static Configuration configuration;        public static Connection conn = null;        static {                configuration = HBaseConfiguration.create();                configuration.set("hbase.zookeeper.property.clientPort", "2181");//              configuration.set("hbase.zookeeper.quorum", "bfct163");//              configuration.set("hbase.master", "bfct162:60000");                configuration.set("hbase.zookeeper.quorum", "192.168.17.163");                configuration.set("hbase.master", "192.168.17.162:60000");                                try {                        conn = ConnectionFactory.createConnection(configuration);                } catch (IOException e) {                        e.printStackTrace();                }        }        public static void main(String[] args) {//               createTable("wujintao");//               insertData("wujintao");                 QueryAll("wujintao");//               QueryByCondition1("wujintao");//               QueryByCondition2("wujintao");//               QueryByCondition3("wujintao");//               deleteRow("wujintao","112233bbbcccc");//               deleteByCondition("wujintao","abcdef");                 //               dropTable("wujintao");        }        /**         * 创建表         *          * @param tableName         */        public static void createTable(String tableName) {                System.out.println("start create table ......");                try {                        TableName TABLE = TableName.valueOf(tableName);                        Admin hBaseAdmin = conn.getAdmin();                        if (hBaseAdmin.tableExists(TABLE)) {// 如果存在要创建的表,那么先删除,再创建                                hBaseAdmin.disableTable(TABLE);                                hBaseAdmin.deleteTable(TABLE);                                System.out.println(tableName + " is exist,detele....");                        }                        HTableDescriptor tableDescriptor = new HTableDescriptor(TABLE);                        tableDescriptor.addFamily(new HColumnDescriptor("column1"));                        tableDescriptor.addFamily(new HColumnDescriptor("column2"));                        tableDescriptor.addFamily(new HColumnDescriptor("column3"));                        hBaseAdmin.createTable(tableDescriptor);                } catch (MasterNotRunningException e) {                        e.printStackTrace();                } catch (ZooKeeperConnectionException e) {                        e.printStackTrace();                } catch (IOException e) {                        e.printStackTrace();                }                System.out.println("end create table ......");        }        /**         * 插入数据         *          * @param tableName         */        public static void insertData(String tableName){                System.out.println("start insert data ......");                try {                        TableName TABLE = TableName.valueOf(tableName);                        Table table = conn.getTable(TABLE);                                                Put put = new Put("112233bbbcccc".getBytes());// 一个PUT代表一行数据,再NEW一个PUT表示第二行数据,每行一个唯一的ROWKEY,此处rowkey为put构造方法中传入的值                        put.addColumn("column1".getBytes(), null, "aaa".getBytes());// 本行数据的第一列addColumn                        put.addColumn("column2".getBytes(), null, "bbb".getBytes());// 本行数据的第三列                        put.addColumn("column3".getBytes(), null, "ccc".getBytes());// 本行数据的第三列                        table.put(put);                } catch (IOException e) {                        e.printStackTrace();                }                System.out.println("end insert data ......");        }        /**         * 删除一张表         *          * @param tableName         */        public static void dropTable(String tableName) {                try {                        TableName TABLE = TableName.valueOf(tableName);                        Admin admin = conn.getAdmin();                                                admin.disableTable(TABLE);                        admin.deleteTable(TABLE);                } catch (MasterNotRunningException e) {                        e.printStackTrace();                } catch (ZooKeeperConnectionException e) {                        e.printStackTrace();                } catch (IOException e) {                        e.printStackTrace();                }        }        /**         * 根据 rowkey删除一条记录         *          * @param tablename         * @param rowkey         */        public static void deleteRow(String tableName, String rowkey) {                try {                        TableName TABLE = TableName.valueOf(tableName);                        Table table = conn.getTable(TABLE);                        List list = new ArrayList();                        Delete d1 = new Delete(rowkey.getBytes());                        list.add(d1);                        table.delete(list);                        System.out.println("删除行成功!");                } catch (IOException e) {                        e.printStackTrace();                }        }        /**         * 组合条件删除         *          * @param tablename         * @param rowkey         */        public static void deleteByCondition(String tablename, String rowkey) {                // 目前还没有发现有效的API能够实现 根据非rowkey的条件删除 这个功能能,还有清空表全部数据的API操作        }        /**         * 查询所有数据         *          * @param tableName         */        public static void QueryAll(String tableName) {                try {                        TableName TABLE = TableName.valueOf(tableName);                        Table table = conn.getTable(TABLE);                        ResultScanner rs = table.getScanner(new Scan());                        for (Result r : rs) {                                System.out.println("获得到rowkey:" + new String(r.getRow()));                                for (Cell cell : r.listCells()) {                                        System.out.println("列:" + new String(CellUtil.cloneFamily(cell)) + "====值:" + new String(CellUtil.cloneValue(cell)));                                }                        }                } catch (IOException e) {                        e.printStackTrace();                }        }        /**         * 单条件查询,根据rowkey查询唯一一条记录         *          * @param tableName         */        public static void QueryByCondition1(String tableName) {                try {                        TableName TABLE = TableName.valueOf(tableName);                        Table table = conn.getTable(TABLE);                                                Get scan = new Get("112233bbbcccc".getBytes());// 根据rowkey查询                        Result r = table.get(scan);                        System.out.println("获得到rowkey:" + new String(r.getRow()));                        for (Cell cell : r.listCells()) {                                System.out.println("列:" + new String(CellUtil.cloneFamily(cell)) + "====值:" + new String(CellUtil.cloneValue(cell)));                        }                } catch (IOException e) {                        e.printStackTrace();                }        }        /**         * 单条件按查询,查询多条记录         *          * @param tableName         */        public static void QueryByCondition2(String tableName) {                                try {                        TableName TABLE = TableName.valueOf(tableName);                        Table table = conn.getTable(TABLE);                        Filter filter = new SingleColumnValueFilter(Bytes.toBytes("column1"), null, CompareOp.EQUAL, Bytes.toBytes("aaa")); // 当列column1的值为aaa时进行查询                        Scan s = new Scan();                        s.setFilter(filter);                        ResultScanner rs = table.getScanner(s);                        for (Result r : rs) {                                System.out.println("获得到rowkey:" + new String(r.getRow()));                                for (Cell cell : r.listCells()) {                                        System.out.println("列:" + new String(CellUtil.cloneFamily(cell)) + "====值:" + new String(CellUtil.cloneValue(cell)));                                }                        }                } catch (Exception e) {                        e.printStackTrace();                }                        }        /**         * 组合条件查询         *          * @param tableName         */        public static void QueryByCondition3(String tableName) {                try {                        TableName TABLE = TableName.valueOf(tableName);                        Table table = conn.getTable(TABLE);                        List filters = new ArrayList();                        Filter filter1 = new SingleColumnValueFilter(Bytes.toBytes("column1"), null, CompareOp.EQUAL, Bytes.toBytes("aaa"));                        filters.add(filter1);                        Filter filter2 = new SingleColumnValueFilter(Bytes.toBytes("column2"), null, CompareOp.EQUAL, Bytes.toBytes("bbb"));                        filters.add(filter2);                        Filter filter3 = new SingleColumnValueFilter(Bytes.toBytes("column3"), null, CompareOp.EQUAL, Bytes.toBytes("ccc"));                        filters.add(filter3);                        FilterList filterList1 = new FilterList(filters);                        Scan scan = new Scan();                        scan.setFilter(filterList1);                        ResultScanner rs = table.getScanner(scan);                        for (Result r : rs) {                                System.out.println("获得到rowkey:" + new String(r.getRow()));                                for (Cell cell : r.listCells()) {                                        System.out.println("列:" + new String(CellUtil.cloneFamily(cell)) + "====值:" + new String(CellUtil.cloneValue(cell)));                                }                        }                        rs.close();                } catch (Exception e) {                        e.printStackTrace();                }        }}

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