Invalid argument looking up property: "person.address.street1" of bean: "PersonForm"

javax.servlet.ServletException: javax.servlet.jsp.JspException: Invalid argument looking up property: "person.address.street1" of bean: "PersonForm"  org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:850)  org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:779)  org.apache.jsp.nestedNest_jsp._jspService(nestedNest_jsp.java:108)  org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)  javax.servlet.http.HttpServlet.service(HttpServlet.java:803)  org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)  org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)  org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)  javax.servlet.http.HttpServlet.service(HttpServlet.java:803)  org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)

这个错误的原因是，PersonForm里面的属性PersonBean需要初始化，PersonBean里面的属性AddressBean address也需要初始化一下。