当前位置:数据库 > Oracle >>

java连接oracle数据库java.sql.SQLException: 无效的列索引问题

java.sql.SQLException: 无效的列索引 无效的列索引 at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111) at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145) at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:207) at oracle.jdbc.driver.OraclePreparedStatement.setStringInternal(OraclePreparedStatement.java:5328) at oracle.jdbc.driver.OraclePreparedStatement.setString(OraclePreparedStatement.java:5320) at untitled5.addreader1.validID(addreader1.java:128) at untitled5.addreader1.jButton1_actionPerformed(addreader1.java:97) at untitled5.addreader1_jButton1_actionAdapter.actionPerformed(addreader1.java:175) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source) at javax.swing.JComponent.processMouseEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) at java.awt.Container.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Window.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) 代码:String driverName = "oracle.jdbc.OracleDriver"; Driver driver = (Driver) Class.forName(driverName).newInstance(); //连接数据库 Connection con = DriverManager.getConnection( "jdbc:oracle:thin:@LONG:1521:orcl", "sysman", "tongfang"); PreparedStatement pstmt = con.prepareStatement( " insert into reader values(?)"); pstmt.setString(1, str1); pstmt.setString(2,str2); pstmt.setString(3,str3); pstmt.setString(4,str4); ResultSet res = pstmt.executeQuery(); 在网上搜索说表的列和java对应问题,大小写问题等等都没能解决,取消索引,单个插入就出现表或试图不存在,可用sqlplus又找得到数据表,都是用sysman的账户,这是什么原因呢,弄个一个下午了,请各位大牛帮忙,期末大作业,急急急!
补充:好的。试试看。
答案:你在prepardstatement里面只有一个问号 在下面的时候  怎么却提供了4个值给他 很显然不可以的嘛
 要么你就再加三个问号  insert into reader values(? , ? , ? , ?)  这才像点样  这错误太低级了
其他:oracle.jdbc.driver.OracleDriver换个数据源看看 索引要从0开始赋值 一个问号对应一个参数,你想塞4个参数就得四个问号。呵呵。 这和用什么用户无关,只要能连上数据库、并且使用的用户对该表有插入权限,就没问题。现在出现的“无效的列索引的异常”,是指在语句pstmt.setString(2,str2);中,列索引2是无效的,因为sql语句中只有一个问号。PreparedStatement 对象中的
setString方法的第一个参数是列索引,这个参数的取值范围是和sql语句中的问号数量对应的,sql语句中有n个问号,setString方法的第一个参数就应该从1到n,如果不在这个范围之内,就会出列索引无效的异常。 pstmt.setString(1, str1);
  pstmt.setString(2,str2);
  pstmt.setString(3,str3);
  pstmt.setString(4,str4);
这是对SQL语句中,第1至第4个占位符进行值的填充,是针对一条SQL语句的。而你的SQL语句中只有1个占位符,所以第2至第4个的填充,程序就无法处理了。
你是想要插入4条记录吗?那在填充值和pstmt.executeQuery()这两句代码使用循环呗

上一个:oracle数据库两个日期比较,一个日期比另一个日期大三个月以上的数据。。纠结。
下一个:急求C#显示oracle数据库信息问题!!!在线等!!!

CopyRight © 2022 站长资源库 编程知识问答 zzzyk.com All Rights Reserved
部分文章来自网络,