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
Hbase关于Java常用API举例的更多相关文章
- Java常用API(Arrays类）
Java常用API(Arrays类) 什么是Arrays类? java.util.Arrays 此类包含用来操作数组的各种方法,比如排序和搜索等.其所有方法均为静态方法,调用起来 非常简单. 这里我们 ...
- Java 常用API（二）
目录 Java 常用API(二) 1. Object类 2. Date类 概述 构造方法和成员方法 3. DateFormat类 概述 SimpleDateFormat类 练习 4. Calendar ...
- Java 常用API（一）
目录 Java 常用API(一) 1. Scanner类 引用类型的一般使用步骤 Scanner的使用步骤 例题 2. 匿名对象 概述 匿名对象作为方法的参数 匿名对象作为方法的返回值 3. Rand ...
- Java常用API(Math类）
Java常用API(Math类) Math类的作用 java.lang.Math 类包含用于执行基本数学运算的方法,如初等指数.对数.平方根和三角函数.类似这样的工具 类,其所有方法均为静态方法,并且 ...
- Java常用API(String类）
Java常用API(String类) 概述: java.lang.String 类代表字符串.Java程序中所有的字符串文字(例如 "abc" )都可以被看作是实现此类的实例 1. ...
- Java常用API(ArrayList类）
Java常用API(ArrayList类) 我们为什么要使用ArrayList类? 为了更加方便的储存对象,因为使用普通的数组来存储对象太过麻烦了,因为数组的一个很大的弱点就是长度从一开始就固定了,所 ...
- Java常用API(Random类）
Java常用API(Random类) Random:是一个用于生成随机数的类 构造方法 public Random() :创建一个新的随机数生成器. 返回随机数的方法 public int nextI ...
- Java常用API(Scanner类）
Java常用API( Scanner类)1 1.Scanner类 首先给大家介绍一下什么是JavaAPI API(Application Programming Interface),应用程序编程接口 ...
- java基础3.0：Java常用API
本篇介绍Java基础中常用API使用,当然只是简单介绍,围绕重要知识点引入,巩固开发知识,深入了解每个API的使用,查看JavaAPI文档是必不可少的. 一.java.lang包下的API Java常 ...
随机推荐
- Qt qml pageview 左右滑动分页组件
[先看效果] [下载]http://download.csdn.net/detail/surfsky/8516949 [调用] 分页视图 左右分页滑动列表组件 示例 PageView{ id: pv ...
- 007_Web to lead
- 在VS中添加lib库的三种方法
注意: 1.每种方法也要复制相应的DLL文件到相应目录,或者设定DLL目录的位置,具体方法为:"Properties" -> "Configuration Prop ...
- python :模态对话框
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/ ...
- Web App适配不同屏幕的几点建议
安卓设备在屏幕尺寸和像素密度上差别很大,因此在使用WebView加载网页时就需要考虑到这种差别,对我们的网页做出精心的设计以在不同的屏幕上都能得到合适的展现.通常情况下,我们需要考虑到两个因素:1.视 ...
- WPF的路由事件、冒泡事件、隧道事件（预览事件）
本文摘要: 1:什么是路由事件: 2:中断事件路由: 3:自定义路由事件: 4:为什么需要自定义路由事件: 5:什么是冒泡事件和预览事件(隧道事件): 1:什么是路由事件 WPF中的事件为路由事件,所 ...
- ELK初步实践
ELK是一个日志分析和统计框架,是Elasticsearch.Logstash和Kibana三个核心开源组件的首字母缩写,实践中还需要filebeat.redis配合完成日志的搜集. 组件一览 名称 ...
- redis持久化配置
redis有rdb和aof两种持久化方式: rdb 默认方式,配置文件中相关的有: save 900 1 #900秒一次,若有1个或以上key修改则save一次,以下相同 save 300 10 sa ...
- Ad hoc sql
SQL Server如何启用Ad Hoc Distributed Queries? 2011-08-11 14:53 wangdingbang CSDN博客 字号:T | T 本文主要介绍了SQL ...
- C 语言
1, // char server[] = BaseNetServerIp; // string serverStr = _aliNetServerEnabled?Ne ...