大家帮偶看看这是什么错误啊？谢谢！！再谢谢咯！！！

[yu145]

javax.servlet.ServletException: tree.GuardForceBean.getWorkgroupy()Ljava/util/ArrayList;
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:867)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:800)
org.apache.jsp.try_jsp._jspService(try_jsp.java:118)
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)


root cause

java.lang.NoSuchMethodError: tree.GuardForceBean.getWorkgroupy()Ljava/util/ArrayList;
org.apache.jsp.try_jsp._jspService(try_jsp.java:74)
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)

[rosen]

没有这个方法：tree.GuardForceBean.getWorkgroupy()

[yu145]

try {

// write it out as XML (if not already present)
Mapping map = new Mapping();
map.loadMapping("mapping.xml");
File file = new File("test.xml");


// restore the value from XML
Reader reader = new FileReader(file);
Unmarshaller unmarshaller = new Unmarshaller(map);
GuardForceBean read = (GuardForceBean)unmarshaller.unmarshal(reader);
//Workgroupy

Iterator W_iter = read.getWorkgroupy().iterator();

while (W_iter.hasNext()){
WorkgroupBean workgroup = (WorkgroupBean)W_iter.next();
Iterator g_iter = workgroup.getGroups().iterator();
while (g_iter.hasNext()){




GroupBean group = (GroupBean)g_iter.next();
temname=group.getName();
temips=group.getIpstart();
temipe=group.getIpend();

n=n+1;
}
}
}catch (IOException ex) {
ex.printStackTrace(System.err);
} catch (MappingException ex) {
ex.printStackTrace(System.err);
} catch (MarshalException ex) {
ex.printStackTrace(System.err);
} catch (ValidationException ex) {
ex.printStackTrace(System.err);
}

我JSP里有这段代码，也有GuardForceBean这个BEAN，里面也有getWorkgroupy()。
这是怎么回事啊？帮帮我咯，谁叫我菜呢！谢谢！！

[yu145]

帮帮忙啊~~~~~~
帮这顶一下吧。。。
谢咯