生成java连接hive代码

可以使用Hive JDBC驱动程序来连接Hive。以下是一个基本的Java代码示例：
import java.sql.*;

public class HiveJdbcClient {
private static String driverName = "org.apache.hive.jdbc.HiveDriver";
private static String connectionString = "jdbc:hive2://localhost:10000/default";
private static String userName = "yourUserName";
private static String password = "yourPassword";

public static void main(String[] args) {
try {
Class.forName(driverName);
Connection conn = DriverManager.getConnection(connectionString, userName, password);
Statement stmt = conn.createStatement();
String query = "SELECT * FROM myTable";
ResultSet rs = stmt.executeQuery(query);

while (rs.next()) {
System.out.println(rs.getString("column1"));
System.out.println(rs.getInt("column2"));
}

rs.close();
stmt.close();
conn.close();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
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请注意：在您的项目中需要包含Hive JDBC驱动程序的jar文件。