Java API如何实现向Hive批量导入数据

package com.enn.idcard; 
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
 
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
/**
 * <p>Description: </p>
 * @author kangkaia
 * @date 2017年12月26日 下午1:42:24
 */
public class HiveJdbc { 
    public static void main(String[] args) throws IOException {
    	List<List> argList = new ArrayList<List>();
		List<String> arg = new ArrayList<String>();
		arg.add("12345");
		arg.add("m");
		argList.add(arg);
		arg = new ArrayList<String>();
		arg.add("54321");
		arg.add("f");
		argList.add(arg);
//		System.out.println(argList.toString());
		String dst = "/test/kk.txt";
		createFile(dst,argList);
		loadData2Hive(dst);
    }
 
    /**
     * 将数据插入hdfs中，用于load到hive表中，默认分隔符是"\001"
     * @param dst
     * @param contents
     * @throws IOException
     */
    public static void createFile(String dst , List<List> argList) throws IOException{
        Configuration conf = new Configuration();
        FileSystem fs = FileSystem.get(conf);
        Path dstPath = new Path(dst); //目标路径
        //打开一个输出流
        FSDataOutputStream outputStream = fs.create(dstPath);
        StringBuffer sb = new StringBuffer();
        for(List<String> arg:argList){
			for(String value:arg){
				sb.append(value).append("\001");
			}
			sb.deleteCharAt(sb.length() - 4);//去掉最后一个分隔符
			sb.append("\n");
		}
        sb.deleteCharAt(sb.length() - 2);//去掉最后一个换行符
        byte[] contents =  sb.toString().getBytes();
        outputStream.write(contents);
        outputStream.close();
        fs.close();
        System.out.println("文件创建成功！");        
    }
    /**
     * 将HDFS文件load到hive表中
     * @param dst
     */
    public static void loadData2Hive(String dst) {
    	String JDBC_DRIVER = "org.apache.hive.jdbc.HiveDriver";
    	String CONNECTION_URL = "jdbc:hive2://server-13:10000/default;auth=noSasl";
    	String username = "admin";
        String password = "admin";
        Connection con = null;
		
		try {
			Class.forName(JDBC_DRIVER);
			con = (Connection) DriverManager.getConnection(CONNECTION_URL,username,password);
			Statement stmt = con.createStatement();			
			String sql = " load data inpath '"+dst+"' into table population.population_information ";
			
			stmt.execute(sql);
			System.out.println("loadData到Hive表成功！");
		} catch (SQLException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}finally {
			// 关闭rs、ps和con
			if(con != null){
				try {
					con.close();
				} catch (SQLException e) {
					e.printStackTrace();
				}
			}
		}
	}    
}

insert overwrite table seqfile_table select * from textfile_table; 
……
insert overwrite table rcfile_table select * from textfile_table;

  <dependency>
   <groupId>org.apache.hive</groupId>
   <artifactId>hive-jdbc</artifactId>
   <version>1.1.0</version>
  </dependency>

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
public class Demo {
	    public static void main(String[] args) throws Exception {
	    	List<List> argList = new ArrayList<List>();
			List<String> arg = new ArrayList<String>();
			arg.add("12345");
			arg.add("m");
			argList.add(arg);
			arg = new ArrayList<String>();
			arg.add("54321");
			arg.add("f");
			argList.add(arg);
//			System.out.println(argList.toString());
			String dst = "/test/kk.txt";
			createFile(dst,argList);
//			loadData2Hive(dst);
	    }
	    /**
	     * 将数据插入hdfs中，用于load到hive表中，默认分隔符是"|"
	     * @param dst
	     * @param contents
	     * @throws IOException
	     * @throws Exception 
	     * @throws InterruptedException 
	     */
	    public static void createFile(String dst , List<List> argList) throws IOException, InterruptedException, Exception{
	        Configuration conf = new Configuration();
			FileSystem fs = FileSystem.get(new URI("hdfs://hadoop:9000"),conf,"root");
	        Path dstPath = new Path(dst); //目标路径
	        //打开一个输出流
	        FSDataOutputStream outputStream = fs.create(dstPath);
	        StringBuffer sb = new StringBuffer();
	        for(List<String> arg:argList){
				for(String value:arg){
					sb.append(value).append("|");
				}
				sb.deleteCharAt(sb.length() - 1);//去掉最后一个分隔符
				sb.append("\n");
			}
	        byte[] contents =  sb.toString().getBytes();
	        outputStream.write(contents);
			outputStream.flush();;
	        outputStream.close();
	        fs.close();
	        System.out.println("文件创建成功！");
	        
	    }
	    /**
	     * 将HDFS文件load到hive表中
	     * @param dst
	     */
	    public static void loadData2Hive(String dst) {
	    	String JDBC_DRIVER = "org.apache.hive.jdbc.HiveDriver";
	    	String CONNECTION_URL = "jdbc:hive2://hadoop:10000/default";
	    	String username = "root";
	        String password = "root";
	        Connection con = null;
			
			try {
				Class.forName(JDBC_DRIVER);
				con = (Connection) DriverManager.getConnection(CONNECTION_URL,username,password);
				Statement stmt = con.createStatement();
				
				String sql = " load data inpath '"+dst+"' into table test ";//test 为插入的表
				
				stmt.execute(sql);
				System.out.println("loadData到Hive表成功！");
			} catch (SQLException e) {
				e.printStackTrace();
			} catch (ClassNotFoundException e) {
				e.printStackTrace();
			}finally {
				// 关闭rs、ps和con
				if(con != null){
					try {
						con.close();
					} catch (SQLException e) {
						e.printStackTrace();
					}
				}
			}
		}
	    
	}