nosql - cassandra CQL3-Hex Bytes 转换错误的插入错误

Question

当我使用 cassandra -jdbc 将数据惰性化到表中时，出现错误 java.sql.SQLSyntaxErrorException: cannot parse 'ani' as hex bytes

在 localhost:9160 连接到测试集群。
[cqlsh 2.3.0 | Cassandra 1.2.0 | CQL 规范 3.0.0 |节俭协议(protocol) 19.35.0]
使用 CQL3 创建表

cqlsh:testkeyspace> create columnfamily login(
                ... key varchar primary key,
                ... name varchar,
                ... password varchar);


package com.bsmart;

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

public class InsertCass {

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

                String qry = "INSERT INTO login (KEY, name, password) VALUES ( 't', 'ani','agrawal');";
                PreparedStatement smt = con.prepareStatement(qry);
                smt.execute();
                // int i=smt.executeUpdate();

                System.out.println("records inserted>>>>");



            }
            catch(Exception e)
            {
                System.out.println(" error: "+e.getMessage());
                e.printStackTrace();
            }

    }

但是错误-

log4j:WARN No appenders could be found for logger (org.apache.cassandra.cql.jdbc.CassandraDriver).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
java.sql.SQLSyntaxErrorException: cannot parse 'ani' as hex bytes
    at org.apache.cassandra.cql.jdbc.CassandraPreparedStatement.doExecute(CassandraPreparedStatement.java:155)
    at org.apache.cassandra.cql.jdbc.CassandraPreparedStatement.execute(CassandraPreparedStatement.java:191)
    at com.bsmart.InsertCass.main(InsertCass.java:18)
 error: cannot parse 'ani' as hex bytes

请帮我。
谢谢

Answer 1

您需要创建 name列为 text或 varchar .您收到的错误表明它被创建为 blob .