Hbase(6)【Java Api Phoenix操作Hbase】

目录

• 两种方式操作Phoenix
  • 1.Thick Driver
  • 2.Thin Driver
  • 3.注意事项

两种方式操作Phoenix

官网：http://phoenix.apache.org/faq.html#What_is_the_Phoenix_JDBC_URL_syntax

What is the Phoenix JDBC URL syntax?

1.Thick Driver

pom依赖

        <dependency>
            <groupId>org.apache.phoenix</groupId>
            <artifactId>phoenix-spark</artifactId>
            <version>5.0.0-HBase-2.0</version>
            <exclusions>
                <exclusion>
                    <groupId>org.glassfish</groupId>
                    <artifactId>javax.el</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

java代码

    public static void main(String[] args)throws Exception {
        //初始化phoenix连接
        Class.forName("org.apache.phoenix.jdbc.PhoenixDriver");
        Connection connection = DriverManager.getConnection("jdbc:phoenix:hadoop102,hadoop103,hadoop104:2181");
        Statement st = connection.createStatement();
        int i = st.executeUpdate("upsert into bigdata.dim_test values ('1003','test3')");
        connection.commit();
        System.out.println(i);
        //PreparedStatement ps = connection.prepareStatement("create table if not exists bigdata.dim_test(id varchar primary key ,info.name varchar)");
        //ps.executeUpdate();
        System.out.println("执行成功");
    }

2.Thin Driver

pom依赖

        <dependency>
            <groupId>org.apache.hbase</groupId>
            <artifactId>hbase-client</artifactId>
            <version>2.0.5</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.apache.phoenix</groupId>
            <artifactId>phoenix-queryserver-client</artifactId>
            <version>5.0.0-HBase-2.0</version>
        </dependency>

        <dependency>
            <groupId>org.apache.hbase</groupId>
            <artifactId>hbase-server</artifactId>
            <version>2.0.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.6</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.google.protobuf</groupId>
            <artifactId>protobuf-java</artifactId>
            <version>3.5.1</version>
        </dependency>
        <dependency>
            <groupId>io.grpc</groupId>
            <artifactId>grpc-netty</artifactId>
            <version>1.10.0</version>
        </dependency>

java代码

package com.bigdata.phoenix;

import org.apache.phoenix.queryserver.client.Driver;
import org.apache.phoenix.queryserver.client.ThinClientUtil;
import org.junit.Test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class PhoenixDemo {

    @Test
    public void createTable() throws Exception{
        //1、加载驱动
        Class.forName("org.apache.phoenix.queryserver.client.Driver");
        //2、获取连接
        String url = ThinClientUtil.getConnectionUrl("hadoop102", 8765);
        System.out.println(url);
        Connection connection = DriverManager.getConnection(url);
        //3、创建Statement对象
        String sql = "create table xxx(" +
                "id varchar primary key," +
                "name varchar," +
                "age varchar)COLUMN_ENCODED_BYTES=0";
        PreparedStatement statement = connection.prepareStatement(sql);
        //4、执行sql操作
        statement.execute();
        //5、关闭
        statement.close();
        connection.close();
    }

    /**
     *
     * @throws Exception
     */
    @Test
    public void insert() throws Exception{
        //1、加载驱动
        Class.forName("org.apache.phoenix.queryserver.client.Driver");
        //2、获取连接
        String url = ThinClientUtil.getConnectionUrl("hadoop102", 8765);
        System.out.println(url);
        Connection connection = DriverManager.getConnection(url);
        //connection.setAutoCommit(true);
        //3、获取statement对象
        PreparedStatement statement = connection.prepareStatement("upsert into xxx values(?,?,?)");

        //4、给参数赋值
        statement.setString(1,"1001");
        statement.setString(2,"zhangsan");
        statement.setString(3,"20");

        //5、执行插入,需要手动提交，不然无法插入
        statement.execute();
        connection.commit();
        //6、关闭
        statement.close();
        connection.close();
    }

    @Test
    public void query() throws Exception{
        //1、加载驱动
        Class.forName("org.apache.phoenix.queryserver.client.Driver");
        //2、获取连接
        String url = ThinClientUtil.getConnectionUrl("hadoop102", 8765);
        System.out.println(url);
        Connection connection = DriverManager.getConnection(url);
        //connection.setAutoCommit(true);
        //3、获取statement对象
        PreparedStatement statement = connection.prepareStatement("select * from xxx");

        ResultSet resultSet = statement.executeQuery();
        while (resultSet.next()){
            String id = resultSet.getString("id");
            String name = resultSet.getString("name");
            String age = resultSet.getString("age");
            System.out.println("id="+id+",name="+name+",age="+age);
        }

        statement.close();
        connection.close();
    }
}

3.注意事项

3.1报错问题

2021-07-30 11:42:12,773 INFO [org.apache.phoenix.query.ConnectionQueryServicesImpl] - HConnection established. Stacktrace for informational purposes: hconnection-0x3214ee6 java.lang.Thread.getStackTrace(Thread.java:1559)
org.apache.phoenix.util.LogUtil.getCallerStackTrace(LogUtil.java:55)
org.apache.phoenix.query.ConnectionQueryServicesImpl.openConnection(ConnectionQueryServicesImpl.java:432)
org.apache.phoenix.query.ConnectionQueryServicesImpl.access$400(ConnectionQueryServicesImpl.java:272)
org.apache.phoenix.query.ConnectionQueryServicesImpl$12.call(ConnectionQueryServicesImpl.java:2556)
org.apache.phoenix.query.ConnectionQueryServicesImpl$12.call(ConnectionQueryServicesImpl.java:2532)
org.apache.phoenix.util.PhoenixContextExecutor.call(PhoenixContextExecutor.java:76)
org.apache.phoenix.query.ConnectionQueryServicesImpl.init(ConnectionQueryServicesImpl.java:2532)
org.apache.phoenix.jdbc.PhoenixDriver.getConnectionQueryServices(PhoenixDriver.java:255)
org.apache.phoenix.jdbc.PhoenixEmbeddedDriver.createConnection(PhoenixEmbeddedDriver.java:150)
org.apache.phoenix.jdbc.PhoenixDriver.connect(PhoenixDriver.java:221)
java.sql.DriverManager.getConnection(DriverManager.java:664)
java.sql.DriverManager.getConnection(DriverManager.java:270)
com.gmall.MethodTest.main(MethodTest.java:21)

这不是报错，就是info中打印的内容，不影响操作

3.2 upsert操作必须commit手动提交

不然不报错，但是数据也无法插入hbase