Hbase关于Java常用API举例

1. HBase相关对Admin操作的的API封装在HBaseAdmin中，封装了HBase常用操作的API

使用方法：

pom.xml

  <!-- https://mvnrepository.com/artifact/org.apache.hbase/hbase-client -->

      <dependency>

          <groupId>org.apache.hbase</groupId>

          <artifactId>hbase-client</artifactId>

          <version>0.98.-hadoop2</version>

      </dependency>

 package com.qunar.demo.hbase;

 import com.google.common.base.Preconditions;

 import com.google.common.base.Strings;

 import com.google.common.collect.Lists;

 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.HBaseAdmin;

 import org.junit.Test;

 import org.slf4j.Logger;

 import org.slf4j.LoggerFactory;

 import java.io.IOException;

 import java.util.Iterator;

 import java.util.List;

 /**

  * author: 龚细军

  * class-aim:

  */

 public class CreateHBaseTable {

     private static Logger logger = LoggerFactory.getLogger(CreateHBaseTable.class);

     /*创建表单*/

     public void createTable(HBaseAdmin admin, String tableName,

                             List<String> columnNames) throws IOException {

         Preconditions.checkArgument(!Strings.isNullOrEmpty(tableName), "table name is not allowed null or empty !");

         Preconditions.checkArgument((null != columnNames && columnNames.size() > 0), "colume is not allowed empty !");

         if (null == admin) {

             throw new IllegalStateException("admin is empty !");

         }

         HTableDescriptor hTableDescriptor = new HTableDescriptor(TableName.valueOf(tableName));

         for (String colName : columnNames) {

             hTableDescriptor.addFamily(new HColumnDescriptor(colName));

         }

         admin.createTable(hTableDescriptor);

     }

     @Test

     public void _createMain() throws IOException {

         Configuration conf = HBaseConfiguration.create();

         HBaseAdmin admin = new HBaseAdmin(conf);

         List list = Lists.newArrayList();

         list.add("emp_col");

         list.add("emp_col1");

         list.add("emp_col2");

         list.add("emp_col3");

         this.createTable(admin, "emp", list);

     }

     /*查询所有表单*/

     public List<String> scanTables(HBaseAdmin admin) {

         HTableDescriptor[] hTableDescriptors = new HTableDescriptor[0];

         if (null == admin) {

             throw new IllegalStateException("admin is empty !");

         }

         try {

             hTableDescriptors = admin.listTables();

         } catch (IOException e) {

             logger.error("获取表单异常", e);

         }

         List<String> tmpList = Lists.newArrayList();

         for (HTableDescriptor hTableDescriptor : hTableDescriptors) {

             tmpList.add(String.valueOf(hTableDescriptor.getNameAsString()));

         }

         return tmpList;

     }

     @Test

     public void _scanTables() throws IOException {

         Configuration conf = HBaseConfiguration.create();

         HBaseAdmin admin = new HBaseAdmin(conf);

         List<String> tableNames = this.scanTables(admin);

         Iterator iterator = tableNames.iterator();

         while (iterator.hasNext()) {

             //日志被收集了,使用下面方式打出

             //logger.info(String.valueOf(iterator.next()));

             System.out.println(String.valueOf(iterator.next()));

         }

     }

 }

HBase对于客户端封装在client调用：

 package com.qunar.demo.hbase;

 import com.google.common.base.Strings;

 import org.apache.hadoop.conf.Configuration;

 import org.apache.hadoop.hbase.HBaseConfiguration;

 import org.apache.hadoop.hbase.client.Get;

 import org.apache.hadoop.hbase.client.HTable;

 import org.apache.hadoop.hbase.client.Put;

 import org.apache.hadoop.hbase.client.Result;

 import org.apache.hadoop.hbase.util.Bytes;

 import org.junit.Test;

 import org.slf4j.Logger;

 import org.slf4j.LoggerFactory;

 import java.io.IOException;

 import static com.google.common.base.Preconditions.checkArgument;

 /**

  * author: 龚细军

  * class-aim: HBase客户端操作API使用

  */

 public class HBaseClientDemo {

     private Logger logger = LoggerFactory.getLogger(HBaseClientDemo.class);

     private Configuration configuration;

     /**

      * 插入数据

      *

      * @param configuration

      */

     public void InsertData(Configuration configuration,

                            String table_Name, String row,

                            String col, String col_name, String value) {

         checkArgument(configuration != null, "configuration is null ");

         checkArgument(!Strings.isNullOrEmpty(table_Name), "tableName is empty");

         checkArgument(!Strings.isNullOrEmpty(row), "row is empty");

         checkArgument(!Strings.isNullOrEmpty(col), "col is empty");

         checkArgument(!Strings.isNullOrEmpty(col_name), "col_name is empty");

         checkArgument(!Strings.isNullOrEmpty(value), "value is empty");

         HTable hTable = null;

         try {

             hTable = new HTable(configuration, table_Name);

             Put put = new Put(Bytes.toBytes(row));

             put.add(Bytes.toBytes(col), Bytes.toBytes(col_name), Bytes.toBytes(value));

             hTable.put(put);

         } catch (IOException e1) {

             logger.error("put data Exception", e1);

         } finally {

             try {

                 if (hTable != null) hTable.close();

             } catch (IOException e) {

                 logger.error("close HTable Exception", e);

             }

         }

     }

     /**

      * 获取数据

      */

     public Result getData(Configuration configuration,

                           String table_Name, String row) {

         checkArgument(configuration != null, "configuration is null ");

         checkArgument(!Strings.isNullOrEmpty(table_Name), "tableName is empty");

         checkArgument(!Strings.isNullOrEmpty(row), "row is empty");

         HTable hTable = null;

         Result result = null;

         try {

             hTable = new HTable(configuration, table_Name);

             Get get = new Get(Bytes.toBytes(row));

             result = hTable.get(get);

         } catch (IOException e1) {

             logger.error("put data Exception", e1);

         } finally {

             try {

                 if (hTable != null) hTable.close();

             } catch (IOException e) {

                 logger.error("close HTable Exception", e);

             }

         }

         return result;

     }

     /**

      * 获取数据

      */

     public Result getData(Configuration configuration,

                           String table_Name, String row,

                           String col) {

         checkArgument(configuration != null, "configuration is null ");

         checkArgument(!Strings.isNullOrEmpty(table_Name), "tableName is empty");

         checkArgument(!Strings.isNullOrEmpty(row), "row is empty");

         checkArgument(!Strings.isNullOrEmpty(col), "col is empty");

         HTable hTable = null;

         Result result = null;

         try {

             hTable = new HTable(configuration, table_Name);

             Get get = new Get(Bytes.toBytes(row));

             result = hTable.get(get.addFamily(Bytes.toBytes(col)));

         } catch (IOException e1) {

             logger.error("put data Exception", e1);

         } finally {

             try {

                 if (hTable != null) hTable.close();

             } catch (IOException e) {

                 logger.error("close HTable Exception", e);

             }

         }

         return result;

     }

     /**

      * 获取数据

      */

     public Result getData(Configuration configuration,

                           String table_Name, String row,

                           String col, String col_name) {

         checkArgument(configuration != null, "configuration is null ");

         checkArgument(!Strings.isNullOrEmpty(table_Name), "tableName is empty");

         checkArgument(!Strings.isNullOrEmpty(row), "row is empty");

         checkArgument(!Strings.isNullOrEmpty(col), "col is empty");

         checkArgument(!Strings.isNullOrEmpty(col_name), "col_name is empty");

         HTable hTable = null;

         Result result = null;

         try {

             hTable = new HTable(configuration, table_Name);

             Get get = new Get(Bytes.toBytes(row));

             result = hTable.get(get.addColumn(Bytes.toBytes(col),

                     Bytes.toBytes(col_name)));

         } catch (IOException e1) {

             logger.error("put data Exception", e1);

         } finally {

             try {

                 if (hTable != null) hTable.close();

             } catch (IOException e) {

                 logger.error("close HTable Exception", e);

             }

         }

         return result;

     }

     @Test

     public void _testPut() {

         configuration = HBaseConfiguration.create();

         this.InsertData(configuration, "emp", "2", "emp_col1", "name", "gongxijun");

     }

     @Test

     public void _testGet() {

         configuration = HBaseConfiguration.create();

         System.out.println(this.getData(configuration, "emp", "1","emp_col","name"));

     }

 }

结果：

 /home/gongxijun/java/jdk1.7.0_40/bin/java -ea -Didea.launcher.port=7535 -Didea.launcher.bin.path=/home/gongxijun/Qunar/idea-IU-139.1117.1/bin -Dfile.encoding=UTF-8 -classpath /home/gongxijun/Qunar/idea-IU-139.1117.1/lib/idea_rt.jar:/home/gongxijun/Qunar/idea-IU-139.1117.1/plugins/junit/lib/junit-rt.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/jfxrt.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/jce.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/jsse.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/javaws.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/rt.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/deploy.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/resources.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/management-agent.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/jfr.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/plugin.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/charsets.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/ext/sunec.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/ext/zipfs.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/ext/localedata.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/ext/sunjce_provider.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/ext/dnsns.jar:/home/gongxijun/java/jdk1.7.0_40/jre/lib/ext/sunpkcs11.jar:/home/gongxijun/gitlab/flume/target/classes:/home/gongxijun/.m2/repository/org/apache/flume/flume-ng-sdk/1.5.0.1/flume-ng-sdk-1.5.0.1.jar:/home/gongxijun/.m2/repository/org/apache/avro/avro/1.7.3/avro-1.7.3.jar:/home/gongxijun/.m2/repository/org/codehaus/jackson/jackson-core-asl/1.8.8/jackson-core-asl-1.8.8.jar:/home/gongxijun/.m2/repository/com/thoughtworks/paranamer/paranamer/2.3/paranamer-2.3.jar:/home/gongxijun/.m2/repository/org/xerial/snappy/snappy-java/1.0.4.1/snappy-java-1.0.4.1.jar:/home/gongxijun/.m2/repository/org/apache/avro/avro-ipc/1.7.3/avro-ipc-1.7.3.jar:/home/gongxijun/.m2/repository/org/mortbay/jetty/jetty/6.1.26/jetty-6.1.26.jar:/home/gongxijun/.m2/repository/org/mortbay/jetty/jetty-util/6.1.26/jetty-util-6.1.26.jar:/home/gongxijun/.m2/repository/org/apache/velocity/velocity/1.7/velocity-1.7.jar:/home/gongxijun/.m2/repository/io/netty/netty/3.5.12.Final/netty-3.5.12.Final.jar:/home/gongxijun/.m2/repository/org/apache/thrift/libthrift/0.7.0/libthrift-0.7.0.jar:/home/gongxijun/.m2/repository/org/apache/flume/flume-ng-sinks/flume-ng-elasticsearch-sink/1.5.0/flume-ng-elasticsearch-sink-1.5.0.jar:/home/gongxijun/.m2/repository/org/apache/flume/flume-ng-core/1.5.0/flume-ng-core-1.5.0.jar:/home/gongxijun/.m2/repository/org/apache/flume/flume-ng-configuration/1.5.0/flume-ng-configuration-1.5.0.jar:/home/gongxijun/.m2/repository/org/slf4j/slf4j-log4j12/1.6.1/slf4j-log4j12-1.6.1.jar:/home/gongxijun/.m2/repository/commons-cli/commons-cli/1.2/commons-cli-1.2.jar:/home/gongxijun/.m2/repository/joda-time/joda-time/2.1/joda-time-2.1.jar:/home/gongxijun/.m2/repository/org/mortbay/jetty/servlet-api/2.5-20110124/servlet-api-2.5-20110124.jar:/home/gongxijun/.m2/repository/com/google/code/gson/gson/2.2.2/gson-2.2.2.jar:/home/gongxijun/.m2/repository/org/apache/mina/mina-core/2.0.4/mina-core-2.0.4.jar:/home/gongxijun/.m2/repository/org/slf4j/slf4j-api/1.6.1/slf4j-api-1.6.1.jar:/home/gongxijun/.m2/repository/org/apache/httpcomponents/httpclient/4.2.1/httpclient-4.2.1.jar:/home/gongxijun/.m2/repository/org/apache/httpcomponents/httpcore/4.2.1/httpcore-4.2.1.jar:/home/gongxijun/.m2/repository/commons-lang/commons-lang/2.5/commons-lang-2.5.jar:/home/gongxijun/.m2/repository/org/apache/hbase/hbase-client/0.98.5-hadoop2/hbase-client-0.98.5-hadoop2.jar:/home/gongxijun/.m2/repository/org/apache/hbase/hbase-common/0.98.5-hadoop2/hbase-common-0.98.5-hadoop2.jar:/home/gongxijun/.m2/repository/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar:/home/gongxijun/.m2/repository/org/apache/hbase/hbase-protocol/0.98.5-hadoop2/hbase-protocol-0.98.5-hadoop2.jar:/home/gongxijun/.m2/repository/commons-codec/commons-codec/1.7/commons-codec-1.7.jar:/home/gongxijun/.m2/repository/commons-io/commons-io/2.4/commons-io-2.4.jar:/home/gongxijun/.m2/repository/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar:/home/gongxijun/.m2/repository/com/google/protobuf/protobuf-java/2.5.0/protobuf-java-2.5.0.jar:/home/gongxijun/.m2/repository/org/apache/zookeeper/zookeeper/3.4.6/zookeeper-3.4.6.jar:/home/gongxijun/.m2/repository/org/cloudera/htrace/htrace-core/2.04/htrace-core-2.04.jar:/home/gongxijun/.m2/repository/org/codehaus/jackson/jackson-mapper-asl/1.8.8/jackson-mapper-asl-1.8.8.jar:/home/gongxijun/.m2/repository/org/apache/hadoop/hadoop-common/2.2.0/hadoop-common-2.2.0.jar:/home/gongxijun/.m2/repository/org/apache/commons/commons-math/2.1/commons-math-2.1.jar:/home/gongxijun/.m2/repository/xmlenc/xmlenc/0.52/xmlenc-0.52.jar:/home/gongxijun/.m2/repository/commons-httpclient/commons-httpclient/3.1/commons-httpclient-3.1.jar:/home/gongxijun/.m2/repository/commons-net/commons-net/3.1/commons-net-3.1.jar:/home/gongxijun/.m2/repository/com/sun/jersey/jersey-core/1.9/jersey-core-1.9.jar:/home/gongxijun/.m2/repository/com/sun/jersey/jersey-json/1.9/jersey-json-1.9.jar:/home/gongxijun/.m2/repository/org/codehaus/jettison/jettison/1.1/jettison-1.1.jar:/home/gongxijun/.m2/repository/stax/stax-api/1.0.1/stax-api-1.0.1.jar:/home/gongxijun/.m2/repository/com/sun/xml/bind/jaxb-impl/2.2.3-1/jaxb-impl-2.2.3-1.jar:/home/gongxijun/.m2/repository/javax/xml/bind/jaxb-api/2.2.2/jaxb-api-2.2.2.jar:/home/gongxijun/.m2/repository/javax/activation/activation/1.1/activation-1.1.jar:/home/gongxijun/.m2/repository/org/codehaus/jackson/jackson-jaxrs/1.8.3/jackson-jaxrs-1.8.3.jar:/home/gongxijun/.m2/repository/org/codehaus/jackson/jackson-xc/1.8.3/jackson-xc-1.8.3.jar:/home/gongxijun/.m2/repository/commons-el/commons-el/1.0/commons-el-1.0.jar:/home/gongxijun/.m2/repository/net/java/dev/jets3t/jets3t/0.6.1/jets3t-0.6.1.jar:/home/gongxijun/.m2/repository/commons-configuration/commons-configuration/1.6/commons-configuration-1.6.jar:/home/gongxijun/.m2/repository/commons-digester/commons-digester/1.8/commons-digester-1.8.jar:/home/gongxijun/.m2/repository/commons-beanutils/commons-beanutils/1.7.0/commons-beanutils-1.7.0.jar:/home/gongxijun/.m2/repository/commons-beanutils/commons-beanutils-core/1.8.0/commons-beanutils-core-1.8.0.jar:/home/gongxijun/.m2/repository/com/jcraft/jsch/0.1.42/jsch-0.1.42.jar:/home/gongxijun/.m2/repository/org/apache/commons/commons-compress/1.4.1/commons-compress-1.4.1.jar:/home/gongxijun/.m2/repository/org/tukaani/xz/1.0/xz-1.0.jar:/home/gongxijun/.m2/repository/org/apache/hadoop/hadoop-auth/2.2.0/hadoop-auth-2.2.0.jar:/home/gongxijun/.m2/repository/org/apache/hadoop/hadoop-mapreduce-client-core/2.2.0/hadoop-mapreduce-client-core-2.2.0.jar:/home/gongxijun/.m2/repository/org/apache/hadoop/hadoop-yarn-common/2.2.0/hadoop-yarn-common-2.2.0.jar:/home/gongxijun/.m2/repository/org/apache/hadoop/hadoop-yarn-api/2.2.0/hadoop-yarn-api-2.2.0.jar:/home/gongxijun/.m2/repository/com/google/inject/guice/3.0/guice-3.0.jar:/home/gongxijun/.m2/repository/javax/inject/javax.inject/1/javax.inject-1.jar:/home/gongxijun/.m2/repository/aopalliance/aopalliance/1.0/aopalliance-1.0.jar:/home/gongxijun/.m2/repository/com/sun/jersey/jersey-server/1.9/jersey-server-1.9.jar:/home/gongxijun/.m2/repository/asm/asm/3.1/asm-3.1.jar:/home/gongxijun/.m2/repository/com/sun/jersey/contribs/jersey-guice/1.9/jersey-guice-1.9.jar:/home/gongxijun/.m2/repository/com/google/inject/extensions/guice-servlet/3.0/guice-servlet-3.0.jar:/home/gongxijun/.m2/repository/org/apache/hadoop/hadoop-annotations/2.2.0/hadoop-annotations-2.2.0.jar:/home/gongxijun/java/jdk1.7.0_40/lib/tools.jar:/home/gongxijun/.m2/repository/com/github/stephenc/findbugs/findbugs-annotations/1.3.9-1/findbugs-annotations-1.3.9-1.jar:/home/gongxijun/.m2/repository/com/google/guava/guava/18.0/guava-18.0.jar:/home/gongxijun/.m2/repository/log4j/log4j/1.2.17/log4j-1.2.17.jar:/home/gongxijun/Qunar/idea-IU-139.1117.1/lib/junit-4.11.jar:/home/gongxijun/Qunar/idea-IU-139.1117.1/lib/hamcrest-core-1.3.jar:/home/gongxijun/Qunar/idea-IU-139.1117.1/lib/hamcrest-library-1.3.jar com.intellij.rt.execution.application.AppMain com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 com.qunar.demo.hbase.HBaseClientDemo,_testGet

 log4j:WARN No appenders could be found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsFactory).

 log4j:WARN Please initialize the log4j system properly.

 log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

 keyvalues={1/emp_col:name/1467883522089/Put/vlen=8/mvcc=0}

 Process finished with exit code 0

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