flink连接hbase方法及遇到的问题

1、继承 RichSinkFunction 类

　　mvn配置：

        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-hbase_2.12</artifactId>
            <version>1.7.2</version>
        </dependency>

　　<dependency>

    <groupId>org.apache.hadoop</groupId>

    <artifactId>hadoop-client</artifactId>
    <version>2.7.3</version>
    <exclusions>
        <exclusion>
            <artifactId>xml-apis</artifactId>
            <groupId>xml-apis</groupId>
        </exclusion>
    </exclusions>
</dependency>

　　config配置：

　　

　　

　　flink接入config代码：

　　

    public static void main(String[] args) throws Exception {
        /*
        Env and Config
         */
        if (args.length > 0) {
            configEnv = args[0];
        }

        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

        String confName = String.format("xxx.%s.properties", configEnv);
        InputStream in = MidasCtr.class.getClassLoader().getResourceAsStream(confName);

        ParameterTool parameterTool = ParameterTool.fromPropertiesFile(in);
        env.getConfig().setGlobalJobParameters(parameterTool);
}

　　

　　代码：　　

package midas.knowbox;

import org.apache.flink.api.java.utils.ParameterTool;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.functions.sink.RichSinkFunction;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.util.Bytes;

public class WriteHbaseRich extends RichSinkFunction<AdDot> {
    private Connection conn = null;
    private Table table = null;

    private static String zkServer;
    private static String zkPort;
    private static TableName tableName;

    private static final String click = "click";
    BufferedMutatorParams params;
    BufferedMutator mutator;

    @Override
    public void open(Configuration parameters) throws Exception {
        ParameterTool para = (ParameterTool)
                getRuntimeContext().getExecutionConfig().getGlobalJobParameters();
        zkServer = para.getRequired("hbase.zkServer");
        zkPort = para.getRequired("hbase.zkPort");
        String tName = para.getRequired("hbase.tableName");
        tableName = TableName.valueOf(tName);


        org.apache.hadoop.conf.Configuration config = HBaseConfiguration.create();

        config.set("hbase.zookeeper.quorum", zkServer);
        config.set("hbase.zookeeper.property.clientPort", zkPort);

        conn = ConnectionFactory.createConnection(config);
        Admin admin = conn.getAdmin();
        admin.listTableNames();
        if (!admin.tableExists(tableName)) {
            HTableDescriptor tableDes = new HTableDescriptor(tableName);

            tableDes.addFamily(new HColumnDescriptor(click).setMaxVersions(3));

            System.out.println("create table");
            admin.flush(tableName);
        }
        // 连接表
        table = conn.getTable(tableName);

        // 设置缓存
        params = new BufferedMutatorParams(tableName);
        params.writeBufferSize(1024);
        mutator = conn.getBufferedMutator(params);
    }

    @Override
    public void invoke(AdDot record, Context context) throws Exception {
        Put put = new Put(Bytes.toBytes(String.valueOf(record.userID)));
        System.out.println("hbase write");

        System.out.println(record.recent10Data);
        put.addColumn(Bytes.toBytes(click),Bytes.toBytes("recent_click"),Bytes.toBytes(String.valueOf(record.toJson())));


        mutator.mutate(put);
        System.out.println("hbase write");
    }

    @Override
    public void close() throws Exception {
        mutator.flush();
        conn.close();
    }
}

 　　调用：

dataStream.addSink(new WriteHbaseRich());

2、实现接口OutputFormat（不知道如何使用flink的配置文件）

　　

package midas.knowbox;

import org.apache.flink.api.common.io.OutputFormat;
import org.apache.flink.configuration.Configuration;

import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.util.Bytes;

import java.io.IOException;
import java.util.ArrayList;

public class WriteHbase implements OutputFormat<AdDot> {

    private Connection conn = null;
    private Table table = null;

    private static String zkServer = "";
    private static String port = "2181";
    private static TableName tableName = TableName.valueOf("test");

    private static final String userCf = "user";
    private static final String adCf = "ad";

    @Override
    public void configure(Configuration parameters) {
    }

    @Override
    public void open(int taskNumber, int numTasks) throws IOException {
        org.apache.hadoop.conf.Configuration config = HBaseConfiguration.create();

        config.set("hbase.zookeeper.quorum", zkServer);
        config.set("hbase.zookeeper.property.clientPort", port);

        conn = ConnectionFactory.createConnection(config);
        Admin admin = conn.getAdmin();
        admin.listTableNames();
        if (!admin.tableExists(tableName)) {

            // 添加表描述
            HTableDescriptor tableDes = new HTableDescriptor(tableName);

            // 添加列族
            tableDes.addFamily(new HColumnDescriptor(userCf));
            tableDes.addFamily(new HColumnDescriptor(adCf));

            // 创建表
            admin.createTable(tableDes);
        }
        table = conn.getTable(tableName);
    }

    @Override
    public void writeRecord(AdDot record) throws IOException {
        Put put = new Put(Bytes.toBytes(record.userID + "_" + record.adID + "_" + record.actionTime)); // 指定行
        // 参数分别:列族、列、值
        put.addColumn(Bytes.toBytes("user"), Bytes.toBytes("uerid"), Bytes.toBytes(record.userID));
        put.addColumn(Bytes.toBytes("ad"), Bytes.toBytes("ad_id"), Bytes.toBytes(record.adID));

        table.put(put);
    }

    @Override
    public void close() throws IOException {
          conn.close()
    }
}    

3、遇到的问题

　　写入hbase的时候出现包引用错误 剔除 xml-apis 就好了

<dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-client</artifactId>
            <version>2.7.3</version>
            <exclusions>
                <exclusion>
                    <artifactId>xml-apis</artifactId>
                    <groupId>xml-apis</groupId>
                </exclusion>
            </exclusions>
 </dependency>