apache phoenix的JAVA JDBC操做

1.  引入jar 到pom 
    
          <dependency>
               <groupId>org.apache.hadoop</groupId>
               <artifactId>hadoop-client</artifactId>
               <version>2.5.2</version>
           </dependency>
           <dependency>
               <groupId>org.apache.hbase</groupId>
               <artifactId>hbase-client</artifactId>
               <version>1.0.1.1</version>
           </dependency>
           <dependency>
               <groupId>org.apache.phoenix</groupId>
               <artifactId>phoenix-core</artifactId>
               <version>4.4.0-HBase-1.0</version>
           </dependency>

2. 建立工具类
   
   import org.apache.log4j.Logger;
   
   import java.sql.Connection;
   import java.sql.DriverManager;
   import java.sql.SQLException;
   
   /**
    * 使用Phoenix提供标准的JDBC链接HBase
    * @author Chenj
    */
   public class PhoenixHelper {
   
       private static final Logger LOG = Logger.getLogger(PhoenixHelper.class);
       private static final String JDBC_DRIVER_CLASS = "org.apache.phoenix.jdbc.PhoenixDriver";
       // jdbc:phoenix:192.168.1.19:2181:/hbase中的/hbase为HBase注册到zooKeeper的根目录, 如使用HBase自带的zooKeeper,默认为"hbase"
       private static final String JDBC_URL          = "jdbc:phoenix:192.168.1.19:2181:/hbase";
   
       public static Connection getConn(){
           try {
               // 注册Driver
               Class.forName(JDBC_DRIVER_CLASS);
               // 返回Connection对象
               return DriverManager.getConnection(JDBC_URL);
           } catch (SQLException |  ClassNotFoundException e ) {
               e.printStackTrace();
               LOG.error("得到链接失败!");
               return null;
           }
       }
   
       public static void closeConn(Connection conn){
           try {
               if (!conn.isClosed())
                   conn.close();
           } catch (SQLException e) {
               e.printStackTrace();
               LOG.error("关闭链接失败!");
           }
       }
   
   }

3. 测试
   
   import org.junit.Before;
   import org.junit.Test;
   
   import java.sql.Connection;
   import java.sql.PreparedStatement;
   import java.sql.SQLException;
   
   /**
    * 建立表测试
    * @author Chenj
    */
   public class TableTest {
   
       Connection conn = null;
   
       String sql = "CREATE TABLE IF NOT EXISTS user (" +
                   "username VARCHAR NOT NULL," +
                   "password VARCHAR, " +
                   "age INTEGER NOT NULL  CONSTRAINT my_pk PRIMARY KEY (username, age))";
   
       @Before
       public void init(){
           conn = PhoenixHelper.getConn();
       }
   
       @Test
       public void createTable() throws SQLException {
           PreparedStatement preparedStatement = conn.prepareStatement(sql);
           preparedStatement.execute();
           PhoenixHelper.closeConn(conn);
       }
   
       @Test
       public void dropTable() throws SQLException {
           PreparedStatement preparedStatement = conn.prepareStatement("drop table user");
           preparedStatement.execute();
           PhoenixHelper.closeConn(conn);
       }
   }