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在使用CQL jdbc驾驶员时,应如何打断连接
原标题:What should be the connection string while using CQL jdbc driver

在使用CQL jdbc驾驶员时,应当有什么样的连接?

我能否在 Java在线利用CQL JDBC司机为CQL找到一个适当的/完整的例子?

最佳回答

你们的伤口需要从一个pache的场地上 c。

在通过CLI获取数据后使用的基本测试(使用来自维基的样本):

public class CqlJdbcTestBasic {
public static void main(String[] args) {
    Connection con = null;
    try {
        Class.forName("org.apache.cassandra.cql.jdbc.CassandraDriver");
        con = DriverManager.getConnection("jdbc:cassandra:root/root@localhost:9160/MyKeyspace");

        String query = "SELECT KEY,  first , last FROM User WHERE age=42";

        Statement stmt = con.createStatement();
        ResultSet result = stmt.executeQuery(query);

        while (result.next()) {
            System.out.println(result.getString("KEY"));
            System.out.println(result.getString("first"));
            System.out.println(result.getString("last"));
        }

    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        if (con != null) {
            try {
                con.close();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            con = null;
        }
    }
}
}

用户/密码(root/root)似乎具有任意性,只是要确定关键空间(MyKeyspace)

注: First 在问询中引用,因为它是CLC的关键词

问题回答




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