IndexOutOfBoundsException: Index: 0, Size: 0

大虾看看这是什么原因。。org.apache.jasper.JasperException: Index: 0, Size: 0
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:358)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
root cause java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
 java.util.ArrayList.RangeCheck(Unknown Source)
 java.util.ArrayList.get(Unknown Source)
 org.apache.jsp.ses.list_jsp._jspService(list_jsp.java:67)
 org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:856)