无法通过eclipse中的java代码从hive获取数据

Question

我正在使用Ubuntu 14.04，hadoop-1.2.1（Single node），hive-1.1.0（Stable 1.1.0），eclipse IDE

我创建了一个java项目并导入了

中的所有外部jar文件

  

的/ usr /本地/蜂巢/ LIB /

     

/usr/local/hadoop/hadoop-core-1.2.1.jar

我的java代码如下：

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

public class HiveJdbcClient {
  private static String driverName = "org.apache.hadoop.hive.jdbc.HiveDriver";

  public static void main(String[] args) throws SQLException {
    try {
      Class.forName(driverName);
    } catch (ClassNotFoundException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
      System.exit(1);
    }
    Connection con = DriverManager.getConnection("jdbc:hive://localhost:10000/default", "", "");
    Statement stmt = con.createStatement();
    String tableName = "testHiveDriverTable";
    stmt.executeQuery("drop table " + tableName);
    ResultSet res = stmt.executeQuery("create table " + tableName + " (key int, value string)");
    // show tables
    String sql = "show tables '" + tableName + "'";
    System.out.println("Running: " + sql);
    res = stmt.executeQuery(sql);
    if (res.next()) {
      System.out.println(res.getString(1));
    }
    // describe table
    sql = "describe " + tableName;
    System.out.println("Running: " + sql);
    res = stmt.executeQuery(sql);
    while (res.next()) {
      System.out.println(res.getString(1) + "\t" + res.getString(2));
    }

    // load data into table
    // NOTE: filepath has to be local to the hive server
    // NOTE: /tmp/a.txt is a ctrl-A separated file with two fields per line
    String filepath = "/tmp/a.txt";
    sql = "load data local inpath '" + filepath + "' into table " + tableName;
    System.out.println("Running: " + sql);
    res = stmt.executeQuery(sql);

    // select * query
    sql = "select * from " + tableName;
    System.out.println("Running: " + sql);
    res = stmt.executeQuery(sql);
    while (res.next()) {
      System.out.println(String.valueOf(res.getInt(1)) + "\t" + res.getString(2));
    }

    // regular hive query
    sql = "select count(1) from " + tableName;
    System.out.println("Running: " + sql);
    res = stmt.executeQuery(sql);
    while (res.next()) {
      System.out.println(res.getString(1));
    }
  }
}

在eclipse中运行此程序我收到此错误：

  

抛出java.lang.ClassNotFoundException：   org.apache.hadoop.hive.jdbc.HiveDriver at   java.net.URLClassLoader $ 1.run（URLClassLoader.java:366）at   java.net.URLClassLoader $ 1.run（URLClassLoader.java:355）at   java.security.AccessController.doPrivileged（Native Method）at   java.net.URLClassLoader.findClass（URLClassLoader.java:354）at   java.lang.ClassLoader.loadClass（ClassLoader.java:425）at   sun.misc.Launcher $ AppClassLoader.loadClass（Launcher.java:308）at at   java.lang.ClassLoader.loadClass（ClassLoader.java:358）at   java.lang.Class.forName0（Native Method）at   java.lang.Class.forName（Class.java:191）at   hive_demo.HiveJdbcClient.main（HiveJdbcClient.java:15）

如何为hive加载jdbc驱动程序？