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?
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?
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
您也可从。
或者使用以下的晚期扶养:
<dependency>
<groupId>org.apache-extras.cassandra-jdbc</groupId>
<artifactId>cassandra-jdbc</artifactId>
<version>1.2.1</version>
</dependency>
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