为什么出这个错误？

boolean hav;hav=true;
while(hav)
{prors=db1.executeQuery(prosql);
if(prors.next()){}
else{hav=false;}
}

解决方案 »

  1.   

    有什么意义呢
    prors=db1.executeQuery(prosql);
     if(prors.next()){hav=true;}
    else{hav=false;}是不是要这个结果阿
      

  2.   

    type Exception report
    org.apache.jasper.JasperException: [Microsoft][ODBC 驱动程序 管理器] 无效的光标状态
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:248)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:289)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:240)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
    root cause javax.servlet.ServletException: [Microsoft][ODBC 驱动程序 管理器] 无效的光标状态
    at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:497)
    at org.apache.jsp.checkok_jsp._jspService(checkok_jsp.java:234)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:136)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)这个错误是怎么引起的？