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  • json数据写入hbase

          <!--hbase 所需要的架包-->
            <dependency>
                <groupId>org.apache.hbase</groupId>
                <artifactId>hbase-client</artifactId>
                <version>1.3.1</version>
            </dependency>
            <dependency>
                <groupId>org.apache.hbase</groupId>
                <artifactId>hbase-server</artifactId>
                <version>1.3.1</version>
            </dependency>
            <dependency>
                <groupId>org.apache.hbase</groupId>
                <artifactId>hbase-common</artifactId>
                <version>1.3.1</version>
            </dependency>
    
            <dependency>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging</artifactId>
                <version>1.2</version>
            </dependency>
    
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.17</version>
            </dependency>
    
    
            <!-- JSON工具类 -->
    
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.2.68</version>
            </dependency>


    package main.scala.com.web.zhangyong168.cn.spark.java;
    import com.alibaba.fastjson.JSONObject;
    import org.apache.hadoop.hbase.HBaseConfiguration;
    import org.apache.hadoop.hbase.TableName;
    import org.apache.hadoop.hbase.client.*;
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.hbase.util.Bytes;
    import java.io.IOException;
    import java.util.ArrayList;
    import java.util.LinkedHashMap;
    import java.util.List;
    import java.util.Map;

    /**
    * @author zhangyong
    * @version 1.0.0
    * @description : json数据写入hbase
    * @date 2020/05/28 10:55
    */
    public class WriteHbase {
    /**
    * 获取hbase hadoop 的相关配置文件
    *
    * @return
    * @throws IOException
    */
    public static Connection initHbase() throws IOException {
    Configuration configuration = HBaseConfiguration.create();
    configuration.addResource("hadoop/mapred-site.xml");
    configuration.addResource("hadoop/hive-site.xml");
    configuration.addResource("hadoop/hive-site.xml");
    configuration.addResource("hadoop/ssl-client.xml");
    configuration.addResource("hadoop/yarn-site.xml");
    configuration.addResource("hadoop/hbase-site.xml");
    configuration.addResource("hadoop/core-site.xml");
    Connection connection = ConnectionFactory.createConnection(configuration);
    return connection;
    }


    /**
    * @param connection hbase连接
    * @param tableName 表名(hbase表空间加表名)
    * @param rowKey rowKey值主值
    * @param colFamliy 列族 默认为i
    * @param col 列名
    * @param val 列值
    */
    public static void insertRow(Connection connection, String tableName, String rowKey, String colFamliy, String col, String val) throws IOException {
    Table table = connection.getTable(TableName.valueOf(tableName));
    Put put = new Put(Bytes.toBytes(rowKey));
    put.addColumn(Bytes.toBytes(colFamliy), Bytes.toBytes(col), Bytes.toBytes(val));
    table.put(put);
    table.close();

    }


    /***
    * 构造数据结果集
    * @param accessArray
    * @return
    */
    public static List<Map<String, Object>> getResultList(AccessArray accessArray) {
    List<Map<String, Object>> list = new ArrayList<>();
    int columnNameLengths = accessArray.getColumnNames().length;
    for (Object[] tempValue : accessArray.getRecordArrayValue()) {
    Map<String, Object> parameters = new LinkedHashMap<>();
    if (columnNameLengths == tempValue.length) {
    for (int j = 0; j <columnNameLengths; j++) {
    parameters.put(accessArray.getColumnName(j), tempValue[j].toString());
    }
    }
    list.add(parameters);
    }
    return list;
    }


    public static void main(String[] args) throws IOException {
    String json="{"columnNames":["id","name","age","birthday"]," +
    ""columnsTypes":[0,0,0,0],"valuesSize":2," +
    ""columnValues":[["1","zhagnsan","19","2020-02-20"]," +
    "["2","lisi","24","2020-02-15"]]}";

    String tableName="AUEIC.DANIEL";
    AccessArray accessArray= JSONObject.parseObject(json,AccessArray.class);
    List<Map<String,Object>> list=getResultList(accessArray);
    for (Map<String,Object> map:list){
    //设置一条数据的rowkey值
    String rowKey=System.currentTimeMillis()+"";
    for (Map.Entry<String,Object> entry:map.entrySet()){
    insertRow(initHbase(),tableName,rowKey,"i",entry.getKey(),entry.getValue().toString());
    }
    }
    }
    }
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  • 原文地址:https://www.cnblogs.com/zy168/p/12981487.html
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