我在連接到直線,hive2版本1.2.1000.2.5.0.0時遇到此異常,我已將hive-jdbc.jar文件添加到Windows 10機器上的類路徑中。在Hortonworks上使用Jdbc遠程連接到Hive時出現ClassNotFoundException
例外:
java.lang.ClassNotFoundException: org.apache.hadoop.hive.jdbc.HiveDriver
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at HiveJdbcClient.main(HiveJdbcClient.java:17)
HiveJdbcClient.java
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);
}
//replace "hive" here with the name of the user the queries should run as
Connection con = DriverManager.getConnection("jdbc:hive://localhost:10003/default", "", "");
Statement stmt = con.createStatement();
String tableName = "testHiveDriverTable";
stmt.execute("drop table if exists " + tableName);
stmt.execute("create table " + tableName + " (key int, value string)");
// show tables
String sql = "show tables '" + tableName + "'";
System.out.println("Running: " + sql);
ResultSet res = stmt.executeQuery(sql);
if (res.next()) {
System.out.println(res.getString(1));
}
}
}
- 我不知道我需要在這裏添加其他什麼罐子?
- 這些jar文件基於Hive的版本而改變?
- Cloudera和Hortonworks等有不同的jar文件,請訪問這個page,這是如此混亂。
- 爲什麼連接到Hive非常複雜,我在Hortonworks上配置了這個配置單元,它的編號爲http://142.56.78.174:10003/default,並且我已經將hive-jdbc jar文件添加到類路徑中,並且我在下面有我的java類。這不夠嗎?
- 請讓我知道我真的很想念我。
感謝您的回答,我已經提前想這一點,
private static String driverName = "org.apache.hive.jdbc.HiveDriver";
謝謝!
謝謝我已經試過這個'private static String driverName =「org.apache.hive.jdbc.HiveDriver」;' – Jordon