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在hive上启动service
hive --service hiveserver
-
在eclipse中进行开发
导入需要的jar包（我这个导入的是udf和jdbc连接hive需要的jar包，基本是最简的了）
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Connection con =
new
HiveJDBC().getConnection(
"jdbc:hive://192.168.192.138:10000/default"
,
""
,
""
);
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package
com.hive.jdbc;
import
java.sql.Connection;
import
java.sql.DriverManager;
import
java.sql.ResultSet;
import
java.sql.SQLException;
import
java.sql.Statement;
/**
* 连接hive
* @author liqi
*
*/
public
class
HiveJDBC {
public
static
final
String driverName =
"org.apache.hadoop.hive.jdbc.HiveDriver"
;
/**
* 获取连接
*/
public
Connection getConnection(String url,String userName,String password){
try
{
Class.forName(driverName);
Connection conn = DriverManager.getConnection(url, userName, password);
return
conn;
}
catch
(ClassNotFoundException e) {
e.printStackTrace();
}
catch
(SQLException e) {
e.printStackTrace();
}
return
null
;
}
public
static
void
main(String args[]){
Connection con =
new
HiveJDBC().getConnection(
"jdbc:hive://192.168.192.138:10000/default"
,
""
,
""
);
try
{
Statement stmt = con.createStatement();
String sql =
"show tables"
;
ResultSet res = stmt.executeQuery(sql);
while
(res.next()) {
sql =
"select * from "
+ res.getString(
1
);
System.out.println(
"tables:"
+ res.getString(
1
));
ResultSet resTable = stmt.executeQuery(sql);
while
(resTable.next()){
System.out.println(resTable.getString(
2
));
}
}
}
catch
(SQLException e) {
e.printStackTrace();
}
}
}
|