eclipse 下hive 连接 hdfs 实现增删查该

package bao;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import org.apache.log4j.Logger;

public class jdbc {
private static String driverName = "org.apache.hadoop.hive.jdbc.HiveDriver";
private static String url = "jdbc:hive://192.168.218.133:10000/default";
private static String user = "root";
private static String password = "123456";
private static String sql = "";
private static ResultSet res;
private static final Logger log = Logger.getLogger(jdbc.class);

public static void main(String[] args) {
try {
Class.forName(driverName);
Connection conn = DriverManager.getConnection(url, user, password);
Statement stmt = conn.createStatement();

// 创建的表名
String tableName = "testHiveDriverTable";
/** 第一步:存在就先删除 **/
sql = "drop table " + tableName;
stmt.executeQuery(sql);

/** 第二步:不存在就创建 **/
sql = "create table " + tableName + " (key int, value string) row format delimited fields terminated by '\t'";
stmt.executeQuery(sql);

// 执行“show tables”操作
sql = "show tables '" + tableName + "'";
System.out.println("Running:" + sql);
res = stmt.executeQuery(sql);
System.out.println("执行“show tables”运行结果:");
if (res.next()) {
System.out.println(res.getString(1));
}

// 执行“describe table”操作
sql = "describe " + tableName;
System.out.println("Running:" + sql);
res = stmt.executeQuery(sql);
System.out.println("执行“describe table”运行结果:");
while (res.next()) {
System.out.println(res.getString(1) + "\t" + res.getString(2));
}

// 执行“load data into table”操作
String filepath = "/home/hadoop/ziliao/userinfo.txt";
sql = "load data local inpath '" + filepath + "' into table " + tableName;
System.out.println("Running:" + sql);
res = stmt.executeQuery(sql);

// 执行“select * query”操作
sql = "select * from " + tableName;
System.out.println("Running:" + sql);
res = stmt.executeQuery(sql);
System.out.println("执行“select * query”运行结果:");
while (res.next()) {
System.out.println(res.getInt(1) + "\t" + res.getString(2));
}

// 执行“regular hive query”操作
sql = "select count(1) from " + tableName;
System.out.println("Running:" + sql);
res = stmt.executeQuery(sql);
System.out.println("执行“regular hive query”运行结果:");
while (res.next()) {
System.out.println(res.getString(1));

}

conn.close();
conn = null;
} catch (ClassNotFoundException e) {
e.printStackTrace();
log.error(driverName + " not found!", e);
System.exit(1);
} catch (SQLException e) {
e.printStackTrace();
log.error("Connection error!", e);
System.exit(1);
}

}
}