聊聊springboot 整合 hbase的问题

聊聊springboot 整合 hbase的问题

springboot 整合 hbase

要确定这三个端口外包可以访问

如果是127.0.0.1 可以参考修改

linux下Hbase安装配置

hbase.master.ipc.address

0.0.0.0

hbase.regionserver.ipc.address

0.0.0.0

配置linux服务器hosts

vim /etc/hosts

127.0.0.1 VM-16-8-centos VM-16-8-centos

127.0.0.1 localhost.localdomain localhot

127.0.0.1 localhost6.localdomain6 localhost6

ip vm-16-8-centos

配置window hosts

ip vm-16-8-centos

项目结构

pom.xml

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">

4.0.0

org.springframework.boot

http:// spring-boot-starter-parent

2.3.2.RELEASE

com.hbase

hbase

0.0.1-SNAPSHOT

hbase

springBoot_hBase Demo

11

org.springframework.boot

spring-boot-starter

org.springframework.boot

spring-boot-starter-test

test

org.junit.vintage

junit-vintage-engine

org.apache.hbase

hbase-client

2.4.7

org.projectlombok

lombok

1.18.4

org.springframework.boot

spring-boot-maven-plugin

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">

4.0.0

org.springframework.boot

http:// spring-boot-starter-parent

2.3.2.RELEASE

com.hbase

hbase

0.0.1-SNAPSHOT

hbase

springBoot_hBase Demo

11

org.springframework.boot

spring-boot-starter

org.springframework.boot

spring-boot-starter-test

test

org.junit.vintage

junit-vintage-engine

org.apache.hbase

hbase-client

2.4.7

org.projectlombok

lombok

1.18.4

org.springframework.boot

spring-boot-maven-plugin

HbaseConfig

package com.springboot.hbase.config.hbase;

import org.springframework.boot.context.properties.ConfigurationProperties;

import org.springframework.context.annotation.Configuration;

import java.util.Map;

/**

* Hbase配置类

* @author sixmonth

* @Date 2019年5月13日

*

*/

@Configuration

@ConfigurationProperties(prefix = HbaseConfig.CONF_PREFIX)

public class HbaseConfig {

public static final String CONF_PREFIX = "hbase.conf";

private Map confMaps;

public Map getconfMaps() {

return confMaps;

}

public void setconfMaps(Map confMaps) {

this.confMaps = confMaps;

}

}

HBaseUtils

package com.springboot.hbase.config.hbase;

import org.apache.hadoop.conf.Configuration;

import org.apache.hadoop.hbase.*;

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

import org.apache.hadoop.hbase.client.coprocessor.LongColumnInterpreter;

import org.apache.hadoop.hbase.filter.*;

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

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.context.annotation.DependsOn;

import org.springframework.stereotype.Component;

import org.springframework.util.StopWatch;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import java.util.Map;

import java.util.NavigableMap;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

/**

* hbase工具类

* @author sixmonth

* @Date 2019年5月13日

*

*/

@DependsOn("springContextHolder")//控制依赖顺序，保证springContextHolder类在之前已经加载

@Component

public class HBaseUtils {

private Logger logger = LoggerFactory.getLogger(this.getClass());

//手动获取hbaseConfig配置类对象

private static HbaseConfig hbaseConfig = SpringContextHolder.getBean("hbaseConfig");

private static Configuration conf = HBaseConfiguration.create();

private static ExecutorService pool = Executors.newScheduledThreadPool(20); //设置hbase连接池

private static Connection connection = null;

private static HBaseUtils instance = null;

private static Admin admin = null;

private HBaseUtils(){

if(connection == null){

try {

//将hbase配置类中定义的配置加载到连接池中每个连接里

Map confMap = hbaseConfig.getconfMaps();

for (Map.Entry confEntry : confMap.entrySet()) {

conf.set(confEntry.getKey(), confEntry.getValue());

}

connection = ConnectionFactory.createConnection(conf, pool);

admin = connection.getAdmin();

} catch (IOException e) {

logger.error("HbaseUtils实例初始化失败！错误信息为：" + e.getMessage(), e);

}

}

}

//简单单例方法，如果autowired自动注入就不需要此方法

public static synchronized HBaseUtils getInstance(){

if(instance == null){

instance = new HBaseUtils();

}

return instance;

}

/**

* 创建表

*

* @param tableName 表名

* @param columnFamily 列族（数组）

*/

public void createTable(String tableName, String[] columnFamily) throws IOException{

TableName name = TableName.valueOf(tableName);

//如果存在则删除

if (admin.tableExists(name)) {

admin.disableTable(name);

admin.deleteTable(name);

logger.error("create htable error! this table {} already exists!", name);

} else {

HTableDescriptor desc = new HTableDescriptor(name);

for (String cf : columnFamily) {

desc.addFamily(new HColumnDescriptor(cf));

}

admin.createTable(desc);

}

}

/**

* 插入记录（单行单列族-多列多值）

*

* @param tableName 表名

* @param row 行名

* @param columnFamilys 列族名

* @param columns 列名（数组）

* @param values 值（数组）（且需要和列一一对应）

*/

public void insertRecords(String tableName, String row, String columnFamilys, String[] columns, String[] values) throws IOException {

TableName name = TableName.valueOf(tableName);

Table table = connection.getTable(name);

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

for (int i = 0; i < columns.length; i++) {

put.addColumn(Bytes.toBytes(columnFamilys), Bytes.toBytes(columns[i]), Bytes.toBytes(values[i]));

table.put(put);

}

}

/**

* 插入记录（单行单列族-单列单值）

*

* @param tableName 表名

* @param row 行名

* @param columnFamily 列族名

* @param column 列名

* @param value 值

*/

public void insertOneRecord(String tableName, String row, String columnFamily, String column, String value) throws IOException {

TableName name = TableName.valueOf(tableName);

Table table = connection.getTable(name);

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

put.addColumn(Bytes.toBytes(columnFamily), Bytes.toBytes(column), Bytes.toBytes(value));

table.put(put);

}

/**

* 删除一行记录

*

* @param tablename 表名

* @param rowkey 行名

*/

public void deleteRow(String tablename, String rowkey) throws IOException {

TableName name = TableName.valueOf(tablename);

Table table = connection.getTable(name);

Delete d = new Delete(rowkey.getBytes());

table.delete(d);

}

/**

* 删除单行单列族记录

* @param tablename 表名

* @param rowkey 行名

* @param columnFamily 列族名

*/

public void deleteColumnFamily(String tablename, String rowkey, String columnFamily) throws IOException {

TableName name = TableName.valueOf(tablename);

Table table = connection.getTable(name);

Delete d = new Delete(rowkey.getBytes()).addFamily(Bytes.toBytes(columnFamily));

table.delete(d);

}

/**

* 删除单行单列族单列记录

*

* @param tablename 表名

* @param rowkey 行名

* @param columnFamily 列族名

* @param column 列名

http:// */

public void deleteColumn(String tablename, String rowkey, String columnFamily, String column) throws IOException {

TableName name = TableName.valueOf(tablename);

Table table = connection.getTable(name);

Delete d = new Delete(rowkey.getBytes()).addColumn(Bytes.toBytes(columnFamily), Bytes.toBytes(column));

table.delete(d);

}

/**

* 查找一行记录

*

* @param tablename 表名

* @param rowKey 行名

*/

public static String selectRow(String tablename, String rowKey) throws IOException {

String record = "";

TableName name=TableName.valueOf(tablename);

Table table = connection.getTable(name);

Get g = new Get(rowKey.getBytes());

Result rs = table.get(g);

NavigableMap>> map = rs.getMap();

for (Cell cell : rs.rawCells()) {

StringBuffer stringBuffer = new StringBuffer()

.append(Bytes.toString(cell.getRowArray(), cell.getRowOffset(), cell.getRowLength())).append("\t")

.append(Bytes.toString(cell.getFamilyArray(), cell.getFamilyOffset(), cell.getFamilyLength())).append("\t")

.append(Bytes.toString(cell.getQualifierArray(), cell.getQualifierOffset(), cell.getQualifierLength())).append("\t")

.append(Bytes.toString(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength())).append("\n");

String str = stringBuffer.toString();

record += str;

}

return record;

}

/**

* 查找单行单列族单列记录

*

* @param tablename 表名

* @param rowKey 行名

* @param columnFamily 列族名

* @param column 列名

* @return

*/

public static String selectValue(String tablename, String rowKey, String columnFamily, String column) throws IOException {

TableName name=TableName.valueOf(tablename);

Table table = connection.getTable(name);

Get g = new Get(rowKey.getBytes());

g.addColumn(Bytes.toBytes(columnFamily), Bytes.toBytes(column));

Result rs = table.get(g);

return Bytes.toString(rs.value());

}

/**

* 查询表中所有行（Scan方式）

*

* @param tablename

* @return

*/

public String scanAllRecord(String tablename) throws IOException {

String record = "";

TableName name=TableName.valueOf(tablename);

Table table = connection.getTable(name);

Scan scan = new Scan();

ResultScanner scanner = table.getScanner(scan);

try {

for(Result result : scanner){

for (Cell cell : result.rawCells()) {

StringBuffer stringBuffer = new StringBuffer()

.append(Bytes.toString(cell.getRowArray(), cell.getRowOffset(), cell.getRowLength())).append("\t")

.append(Bytes.toString(cell.getFamilyArray(), cell.getFamilyOffset(), cell.getFamilyLength())).append("\t")

.append(Bytes.toString(cell.getQualifierArray(), cell.getQualifierOffset(), cell.getQualifierLength())).append("\t")

.append(Bytes.toString(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength())).append("\n");

String str = stringBuffer.toString();SoHvb

record += str;

}

}

} finally {

if (scanner != null) {

scanner.close();

}

}

return record;

}

/**

* 根据rowkey关键字查询报告记录

*

* @param tablename

* @param rowKeyword

* @return

*/

public List scanReportDataByRowKeyword(String tablename, String rowKeyword) throws IOException {

ArrayList

Table table = connection.getTable(TableName.valueOf(tablename));

Scan scan = new Scan();

//添加行键过滤器，根据关键字匹配

RowFilter rowFilter = new RowFilter(CompareFilter.CompareOp.EQUAL, new SubstringComparator(rowKeyword));

scan.setFilter(rowFilter);

ResultScanner scanner = table.getScanner(scan);

try {

for (Result result : scanner) {

//TODO 此处根据业务来自定义实现

list.add(null);

}

} finally {

if (scanner != null) {

scanner.close();

}

}

return list;

}

/**

* 根据rowkey关键字和时间戳范围查询报告记录

*

* @param tablename

* @param rowKeyword

* @return

*/

public List scanReportDataByRowKeywordTimestamp(String tablename, String rowKeyword, Long minStamp, Long maxStamp) throws IOException {

ArrayList

Table table = connection.getTable(TableName.valueOf(tablename));

Scan scan = new Scan();

//添加scan的时间范围

scan.setTimeRange(minStamp, maxStamp);

RowFilter rowFilter = new RowFilter(CompareFilter.CompareOp.EQUAL, new SubstringComparator(rowKeyword));

scan.setFilter(rowFilter);

ResultScanner scanner = table.getScanner(scan);

try {

for (Result result : scanner) {

//TODO 此处根据业务来自定义实现

list.add(null);

}

} finally {

if (scanner != null) {

scanner.close();

}

}

return list;

}

/**

* 删除表操作

*

* @param tablename

*/

public void deleteTable(String tablename) throws IOException {

TableName name=TableName.valueOf(tablename);

if(admin.tableExists(name)) {

admin.disableTable(name);

admin.deleteTable(name);

}

}

}

SpringContextHolder

package com.springboot.hbase.config.hbase;

import org.springframework.beans.BeansException;

import org.springframework.context.ApplicationContext;

import org.springframework.context.ApplicationContextAware;

import org.springframework.stereotype.Component;

/**

* Spring的ApplicationContext的持有者，可以用静态方法的方式获取spring容器中的bean

*/

@Component

public class SpringContextHolder implements ApplicationContextAware {

private static ApplicationContext applicationContext;

@Override

public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

SpringContextHolder.applicationContext = applicationContext;

}

public static ApplicationContext getApplicationContext() {

assertApplicationContext();

return applicationContext;

}

@SuppressWarnings("unchecked")

public static T getBean(String beanName) {

assertApplicationContext();

return (T) applicationContext.getBean(beanName);

}

public static T getBean(Class requiredType) {

assertApplicationContext();

return applicationContext.getBean(requiredType);

}

private static void assertApplicationContext() {

if (SpringContextHolder.applicationContext == null) {

throw new RuntimeException("applicaitonContext属性为null,请检查是否注入了SpringContextHolder!");

}

}

}

application.properties

hbase.conf.confMaps.hbase.zookeeper.quorum= vm-16-8-centos:2181

HBaseApplicationTests

package com.springboot.hbase;

import com.springboot.hbase.config.hbase.HBaseUtils;

import lombok.extern.log4j.Log4j2;

import org.junit.jupiter.api.Test;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.boot.test.context.SpringBootTest;

import javax.annotation.Resource;

import java.io.IOException;

import java.util.HashMap;

import java.util.Map;

@SpringBootTest

@Log4j2

class HBaseApplicationTests {

@Autowired

private HBaseUtils hBaseUtils;

@Test

void deleteTable() throws IOException {

Map map = new HashMap();

try {

String str = hBaseUtils.scanAllRecord("SYSTEM.TASK");//扫描表

System.out.println("获取到hbase的内容："+str);

map.put("hbaseContent",str);

} catch (IOException e) {

e.printStackTrace();

}

System.out.println(map);

}

}

执行测试类

成功如下

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