`

Parameter index out of range (1 > number of parameters, which is 0).

 
阅读更多
1.http://www.blogjava.net/wenjiale/archive/2012/08/17/231828.html

2.调用了executeQuery(sql)
也会有这个

3.http://www.verydemo.com/demo_c152_i14659.html


java.sql.SQLException: Before start of result set
http://ndebyq.blog.51cto.com/274018/93046

引用
解决方法:使用rs.getString();前一定要加上rs.next();
原因:ResultSet对象代表SQL语句执行的结果集,维护指向其当前数据行的光标。每调用一次next()方法,光标向下移动一行。最初它位于第一行之前,因此第一次调用next()应把光标置于第一行上,使它成为当前行。随着每次调用next()将导致光标向下移动一行。在ResultSe对象及其t父辈Statement对象关闭之前,光标一直保持有效
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