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
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