今天写了Java链接HBASE的具体代码，但是包的导入花费了时间，代码编译也有错误
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
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.KeyValue;
import org.apache.hadoop.hbase.MasterNotRunningException;
import org.apache.hadoop.hbase.ZooKeeperConnectionException;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
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.Put;
import org.apache.hadoop.hbase.util.Bytes;
public class HbaseTest {
private static Configuration conf =null;
/**
* 初始化配置
*/
static {
conf = HBaseConfiguration.create();
}
/**
* 创建一张表
*/
public static void creatTable(String tableName, String[] familys) throws Exception {
HBaseAdmin admin = new HBaseAdmin(conf);
if (admin.tableExists(tableName)) {
System.out.println("table already exists!");
} else {
HTableDescriptor tableDesc = new HTableDescriptor(tableName);
for(int i=0; i<familys.length; i++){
tableDesc.addFamily(new HColumnDescriptor(familys[i]));
}
admin.createTable(tableDesc);
System.out.println("create table " + tableName + " ok.");
}
}
/**
* 删除表
*/
public static void deleteTable(String tableName) throws Exception {
try {
HBaseAdmin admin = new HBaseAdmin(conf);
admin.disableTable(tableName);
admin.deleteTable(tableName);
System.out.println("delete table " + tableName + " ok.");
} catch (MasterNotRunningException e) {
e.printStackTrace();
} catch (ZooKeeperConnectionException e) {
e.printStackTrace();
}
}
/**
* 插入一行记录
*/
public static void addRecord (String tableName, String rowKey, String family, String qualifier, String value)
throws Exception{
try {
HTable table = new HTable(conf, tableName);
Put put = new Put(Bytes.toBytes(rowKey));
put.add(Bytes.toBytes(family),Bytes.toBytes(qualifier),Bytes.toBytes(value));
table.put(put);
System.out.println("insert recored " + rowKey + " to table " + tableName +" ok.");
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 删除一行记录
*/
public static void delRecord (String tableName, String rowKey) throws IOException{
HTable table = new HTable(conf, tableName);
List list = new ArrayList();
Delete del = new Delete(rowKey.getBytes());
list.add(del);
table.delete(list);
System.out.println("del recored " + rowKey + " ok.");
}
/**
* 查找一行记录
*/
public static void getOneRecord (String tableName, String rowKey) throws IOException{
HTable table = new HTable(conf, tableName);
Get get = new Get(rowKey.getBytes());
Result rs = table.get(get);
for(KeyValue kv : rs.raw()){
System.out.print(new String(kv.getRow()) + " " );
System.out.print(new String(kv.getFamily()) + ":" );
System.out.print(new String(kv.getQualifier()) + " " );
System.out.print(kv.getTimestamp() + " " );
System.out.println(new String(kv.getValue()));
}
}
/**
* 显示所有数据
*/
public static void getAllRecord (String tableName) {
try{
HTable table = new HTable(conf, tableName);
Scan s = new Scan();
ResultScanner ss = table.getScanner(s);
for(Result r:ss){
for(KeyValue kv : r.raw()){
System.out.print(new String(kv.getRow()) + " ");
System.out.print(new String(kv.getFamily()) + ":");
System.out.print(new String(kv.getQualifier()) + " ");
System.out.print(kv.getTimestamp() + " ");
System.out.println(new String(kv.getValue()));
}
}
} catch (IOException e){
e.printStackTrace();
}
}
public static void main (String [] agrs) {
try {
String tablename = "scores";
String[] familys = {"grade", "course"};
HbaseTest.creatTable(tablename, familys);
//add record zkb
HbaseTest.addRecord(tablename,"zkb","grade","","5");
HbaseTest.addRecord(tablename,"zkb","course","","90");
HbaseTest.addRecord(tablename,"zkb","course","math","97");
HbaseTest.addRecord(tablename,"zkb","course","art","87");
//add record baoniu
HbaseTest.addRecord(tablename,"baoniu","grade","","4");
HbaseTest.addRecord(tablename,"baoniu","course","math","89");
System.out.println("===========get one record========");
HbaseTest.getOneRecord(tablename, "zkb");
System.out.println("===========show all record========");
HbaseTest.getAllRecord(tablename);
System.out.println("===========del one record========");
HbaseTest.delRecord(tablename, "baoniu");
HbaseTest.getAllRecord(tablename);
System.out.println("===========show all record========");
HbaseTest.getAllRecord(tablename);
} catch (Exception e) {
e.printStackTrace();
}
}
}