HTTP Status 500 -
The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 40
37: </tr>
38: <%
39: List listMainBoard=(List)mapBoard.get(new Integer(0));
40: for(int i=0;i <listMainBoard.size();i++){
41: Board mainBoard=(Board)listMainBoard.get(i);
42: %>
43: <tr class="tr3">
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:554)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:431)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:319)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.NullPointerException
org.apache.jsp.index_jsp._jspService(index_jsp.java:104)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:389)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:319)
org.apache.jasper
新手:
tomcat+struts 2.0
jsp 页面直接关联model
现在需要根据model(admin)里面的一个item(id),判断jsp页面出现的内容.
大概流程:
...
<table>
<tr>
<td>
<s:if admin.id is null> ......
网页上已经有一个静态的图片，我想根据屏幕坐标在这个图片上确定两个点，然后用一条直线把这两个点连接起来，在JSP里能实现吗？用JS呢？请指点一下吧！！！，给出个小例子不胜感激！！
改文件的事情，还是留给serve ......
