java连接hive代码

以下是Java连接Hive的示例代码：

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

public class HiveJdbcClient {

  private static String driverName = "org.apache.hive.jdbc.HiveDriver";

  public static void main(String[] args) throws Exception {
    // Register driver and create connection
    Class.forName(driverName);
    Connection con = DriverManager.getConnection("jdbc:hive2://localhost:10000/default", "", "");

    // Execute query
    Statement stmt = con.createStatement();
    String query = "SELECT * FROM my_table";
    ResultSet rs = stmt.executeQuery(query);

    // Process result set
    while (rs.next()) {
      System.out.println(rs.getString("column1") + "\t" + rs.getString("column2"));
    }

    // Close connection
    rs.close();
    stmt.close();
    con.close();
  }
}

请注意，您需要将`driverName`设置为正确的Hive JDBC驱动程序名称，并将连接字符串中的主机名和端口号更改为您的Hive服务器的实际值。您还需要替换查询字符串中的`my_table`与您要查询的表名。