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if (request.getParameter("qq")!=null && request.getParameter("fh")!=null){
  sql_1="select * from sykj_main_df where djrq>='"+qq+"' and djrq <='"+zq+"' order by djrq desc ";

}

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public class Student {
String name=null;
long number;
double weight,height;
public String getName() {
return name;
}
public void setName(Strin ......

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type Exception report


message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jas ......

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 session.setAttribute( "username" , user);
  <jsp:include page="login.jsp" />// ......
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