错误提示：严重:Servlet.service() for servlet [jsp] in context with

错误提示：严重:Servlet.service() for servlet [jsp] in context with path [/Test_3] threw exception [An exception occurred processing JSP page /login.jsp at line 15
12:
13:
14:
15:username:

16:password :

17:
18:
Stacktrace:] with root cause
javax.servlet.jsp.JspException:Cannot find bean:"org.apache.struts.taglib.html.BEAN" in any scope
\x05at org.apache.struts.taglib.TagUtils.lookup(TagUtils.java:935)
\x05at org.apache.struts.taglib.html.BaseFieldTag.prepareValue(BaseFieldTag.java:121)
\x05at org.apache.struts.taglib.html.BaseFieldTag.renderInputElement(BaseFieldTag.java:102)
\x05at org.apache.struts.taglib.html.BaseFieldTag.doStartTag(BaseFieldTag.java:81)
\x05at org.apache.jsp.login_jsp._jspx_meth_html_005ftext_005f0(login_jsp.java:129)
\x05at org.apache.jsp.login_jsp._jspService(login_jsp.java:91)
\x05at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
\x05at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
\x05at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433)
\x05at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
\x05at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
\x05at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
\x05at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
\x05at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
\x05at
代码：
My JSP 'login.jsp' starting page
\x05
username:

password:

That would be it.You have to have