大家帮我看下这个错误
org.apache.jasper.JasperException: Exception in JSP: /register.jsp:13
10: <TITLE>register</TITLE>
11: </HEAD>
12: <BODY>
13: <P><html:form action="/register.do">
14: 用户名:<html:text property="username"></html:text><BR>
15: 密码1: <html:text property="password1"></html:text><BR>
16: 密码2: <html:text property="password2"></html:text><BR>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:504)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)