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【Java】 java 获取 hbase数据 springdatahadoop -- hbasetempl
作者: / 发布于2017/5/8/ 675
配置文件
1、建立 spring-hbase.xml 获取连接池
第一种：直接在配置文件注明 hdfs的端口和zk的地址以及端口进行连接

<?xml version="1.0" encoding="UTF-8"?>  
    <beans xmlns="http://www.springframework.org/schema/beans"  
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
   xmlns:hdp="http://www.springframework.org/schema/hadoop"  
   xmlns:beans="http://www.springframework.org/schema/beans"  
   xmlns:context="http://www.springframework.org/schema/context"  
   xsi:schemaLocation="  
    http://www.springframework.org/schema/beans   
    http://www.springframework.org/schema/beans/spring-beans.xsd  
    http://www.springframework.org/schema/hadoop   
    http://www.springframework.org/schema/hadoop/spring-hadoop.xsd  
    http://www.springframework.org/schema/context   
    http://www.springframework.org/schema/context/spring-context-3.1.xsd">  
     
   <context:property-placeholder location="hbase.properties" />  
     
      <!-- 配置HbaseTemplate -->  
    <bean id="htemplate" class="org.springframework.data.hadoop.hbase.HbaseTemplate">    
          <property name="configuration" ref="hbaseConfiguration">  
          </property>  
     </bean>    
    <!-- 配置hadoop的基本信息 -->   
     <hdp:configuration>  
          fs.default.name="hdfs://192.168.0.173:8082"  
     </hdp:configuration>   
     <!-- 配置zookeeper地址和端口 -->  
     <hdp:hbase-configuration zk-quorum="192.168.0.173" zk-port="2181" />   
 </beans>  
第二种：只需要配置zk的地址和端口，但是需要在classpath另外新增 hbase-site.xml的配置
spring-hbase.xml 配置：
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<?xml version="1.0" encoding="UTF-8"?>  
    <beans xmlns="http://www.springframework.org/schema/beans"  
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
   xmlns:hdp="http://www.springframework.org/schema/hadoop"  
   xmlns:beans="http://www.springframework.org/schema/beans"  
   xsi:schemaLocation="  
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
    http://www.springframework.org/schema/hadoop http://www.springframework.org/schema/hadoop/spring-hadoop.xsd">  
      <!-- 配置zookeeper的信息，远程连接hbase时使用 -->  
    <hdp:configuration resources="classpath:/hbase-site.xml" />  
    <hdp:hbase-configuration configuration-ref="hadoopConfiguration" />  
    <!-- 配置HbaseTemplate -->  
    <bean id="htemplate" class="org.springframework.data.hadoop.hbase.HbaseTemplate">  
        <property name="configuration" ref="hbaseConfiguration">  
        </property>  
    <property name="encoding" value="UTF-8"></property>  
    </bean>  
 </beans>  

hbase-site.xml 配置  放在classpath下（直接扔到src下即可）

<?xml version="1.0"?>  
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>  
<configuration>  
    <property>  
        <name>hbase.zookeeper.quorum</name>  
        <value>192.168.0.173</value>  
    </property>  
  
    <property>  
        <name>hbase.zookeeper.property.clientPort</name>  
        <value>2181</value>  
    </property>  
</configuration>  

配置完成
程序代码
官网的api地址已经在上面发过了，这里只做了一个简单的demo，列举了简单的 get  find execue 方法

package cn.fulong.hbase;  
  
import java.util.HashMap;  
import java.util.List;  
import java.util.Map;  
  
import org.apache.hadoop.hbase.Cell;  
import org.apache.hadoop.hbase.client.HTableInterface;  
import org.apache.hadoop.hbase.client.Put;  
import org.apache.hadoop.hbase.client.Result;  
import org.apache.hadoop.hbase.client.Scan;  
import org.apache.hadoop.hbase.util.Bytes;  
import org.springframework.beans.factory.BeanFactory;  
import org.springframework.context.ApplicationContext;  
import org.springframework.context.support.ClassPathXmlApplicationContext;  
import org.springframework.data.hadoop.hbase.HbaseTemplate;  
import org.springframework.data.hadoop.hbase.RowMapper;  
import org.springframework.data.hadoop.hbase.TableCallback;  
  
import cn.fulong.view.HbaseModel;  
public class HbaseTest {  
    //ApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "application_hbase.xml" });    
    ApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "spring_hbase.xml" });    
  
    BeanFactory factory = (BeanFactory) context;   
    HbaseTemplate htemplate = (HbaseTemplate) factory.getBean("htemplate");  
    Map hMap = new HashMap<String, List<HbaseModel>>();  
    public String key;  
    public String familyName ;  
    public String qualifier;  
    public String value;  
          
    public String getValue() {  
        return value;  
    }  
    public void setValue(String value) {  
        this.value = value;  
    }  
    public String getFamilyName() {  
        return familyName;  
    }  
    public void setFamilyName(String familyName) {  
        this.familyName = familyName;  
    }  
    public String getQualifier() {  
        return qualifier;  
    }  
    public void setQualifier(String qualifier) {  
        this.qualifier = qualifier;  
    }  
    public String getKey() {  
        return key;  
    }  
    public void setKey(String key) {  
        this.key = key;  
    }  
      
           
          
    public static void main(String[] args) {  
        //PrefixFilter  
        HbaseTest h = new HbaseTest();  
   
        for(int i=0;i<=10000;i++){  
            h.setKey("linlin"+i);  
            h.setFamilyName("info");   
            h.setQualifier("service");  
            h.setValue(i+"技术创新和质量服务");  
            h.execute("linlintest", null);  
        }  
      
     List<Map<String,Object>>  mapList1 = h.find("linlintest",null,null);  
        System.out.println("2");  
    }  
    /** 
     * 写数据 
     * @param tableName 
     * @param action 
     * @return 
     */  
    public Boolean execute(String tableName, TableCallback<Boolean> action) {    
        return htemplate.execute(tableName, new TableCallback<Boolean>() {  
            public Boolean doInTable(HTableInterface table) throws Throwable {  
                boolean flag = false;  
                try{  
                    byte[] rowkey = key.getBytes();  
                    Put put = new Put(rowkey);  
                    put.add(Bytes.toBytes(familyName),Bytes.toBytes(qualifier), Bytes.toBytes(value));  
                    table.put(put);  
                 flag = true;  
                }catch(Exception e){  
                    e.printStackTrace();  
                }  
                return flag;  
            }  
        });  
    }    
     /** 
      * 通过表名和key获取一行数据 
      * @param tableName 
      * @param rowName 
      * @return 
      */  
    public Map<String, Object> get(String tableName, String rowName) {  
         return htemplate.get(tableName, rowName,new RowMapper<Map<String,Object>>(){  
               public Map<String,Object> mapRow(Result result, int rowNum) throws Exception {      
                   List<Cell> ceList =   result.listCells();  
                   Map<String,Object> map = new HashMap<String, Object>();  
                        if(ceList!=null&&ceList.size()>0){  
                            for(Cell cell:ceList){  
                                map.put(Bytes.toString(cell.getFamilyArray(),cell.getFamilyOffset(),cell.getFamilyLength())+  
                                   "_"+Bytes.toString( cell.getQualifierArray(),cell.getQualifierOffset(),cell.getQualifierLength()),   
                                   Bytes.toString( cell.getValueArray(), cell.getValueOffset(), cell.getValueLength()));  
                       }  
                   }  
                    return  map;  
               }  
             });  
    }  
      
    /** 
     * 通过表名  key 和 列族 和列 获取一个数据 
     * @param tableName 
     * @param rowName 
     * @param familyName 
     * @param qualifier 
     * @return 
     */  
    public String get(String tableName ,String rowName, String familyName, String qualifier) {  
          return htemplate.get(tableName, rowName,familyName,qualifier ,new RowMapper<String>(){  
                 public String mapRow(Result result, int rowNum) throws Exception {     
                     List<Cell> ceList =   result.listCells();  
                     String res = "";  
                     if(ceList!=null&&ceList.size()>0){  
                         for(Cell cell:ceList){  
                             res = Bytes.toString( cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());  
                         }  
                     }  
                   return res;  
                 }  
          });  
    }  
      
      
     /** 
      * 通过表名，开始行键和结束行键获取数据 
      * @param tableName 
      * @param startRow 
      * @param stopRow 
      * @return 
      */  
    public List<Map<String,Object>> find(String tableName , String startRow,String stopRow) {  
         Scan scan = new Scan();  
         if(startRow==null){  
             startRow="";  
         }  
         if(stopRow==null){  
             stopRow="";      
         }  
         scan.setStartRow(Bytes.toBytes(startRow));  
         scan.setStopRow(Bytes.toBytes(stopRow));  
        /* PageFilter filter = new PageFilter(5); 
         scan.setFilter(filter);*/  
         return     htemplate.find(tableName, scan,new RowMapper<Map<String,Object>>(){  
               public Map<String,Object> mapRow(Result result, int rowNum) throws Exception {   
                    
                     List<Cell> ceList =   result.listCells();  
                     Map<String,Object> map = new HashMap<String,Object>();  
                     Map<String,Map<String,Object>> returnMap = new HashMap<String,Map<String,Object>>();  
                     String  row = "";  
                     if(ceList!=null&&ceList.size()>0){  
                           for(Cell cell:ceList){  
                            row =Bytes.toString( cell.getRowArray(), cell.getRowOffset(), cell.getRowLength());  
                            String value =Bytes.toString( cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());  
                            String family =  Bytes.toString(cell.getFamilyArray(),cell.getFamilyOffset(),cell.getFamilyLength());  
                            String quali = Bytes.toString( cell.getQualifierArray(),cell.getQualifierOffset(),cell.getQualifierLength());  
                            map.put(family+"_"+quali, value);  
                           }  
                           map.put("row",row );  
                       }  
                       return  map;  
                   }  
                 });  
    }  
  
      
    /* public  void scanValueByFilter(String tableName,String row) throws IOException{ 
         HTable table = new HTable(conf, tableName);   
         Scan scan = new Scan(); 
         scan.setFilter(new PrefixFilter(row.getBytes())); 
         ResultScanner resultScanner = table.getScanner(scan); 
         for(Result rs:resultScanner){ 
     
              
         } 
          
     }*/  
}
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