十万火急,大家帮我看看
程序如下:
String name=sess.getAttribute("user");//
String sql="select * from DATAK31_FWSQXB,DATAK30_CZCDB and ";
sql=sql+" DATAK30_CZZDB.DATAK30_CDBH=DATAK31_FWSQXB.DATAK30_CDBH ";
sql=sql+" and DATAK31_FWSQXB.DATAK20_DM='"+name+"'";
出错:
Generated servlet error:
D:\Tomcat4\work\Standalone\localhost\ywh\car\frame11$jsp.java:109: Incompatible type for declaration. Explicit cast needed to convert java.lang.Object to java.lang.String.
String name=sess.getAttribute("user");
我觉得没有类型转换的问题,但此处报这个错误。不知为何???