Struts错误如何解决呢？

应该这样引吧
<%@ page import="java.util.ArrayList" session="true"%>

我是根据http://www.blueidea.com/tech/program/2003/911_9.asp里面写的一步步做下来的，我也不知道错在哪里？大侠能否详细一点解释。主要是学习 Struts+JavaBean+SessonBean+EntityBean调用数据库。（随便提供一些这样的学习资料，谢谢)

根据我的理解，Action中把表数据以数组形式存放在lyList变量中，然后在Jsp页面循环显示出来。但我也不知道怎么做。只是照搬而已

那你可以这样，
在action中声明一个ArrayList对像，
然后把从数据库读出的数据放到这个ArrayList中，
将数组放入session中：
session.setAttribute("al",al);
然后在jsp页面中
ArrayList ar=(ArrayList)session.getAttribute("al");
就ok了

这样写:
<jsp:useBean id="userHelper" scope="page" class="com.hl.jls.security.model.helper.SysUserHelper" /><logic:iterate id="user" name="userHelper" type="com.hl.jls.security.model.hbm.SysUser" property="users" >
<tr>
<td><bean:write name="user" property="u004"/></td>
...
key point:
1.name = id
2,property="users" SysUserHelper必须有方法getUsers()方法

还是不明白，你们能不能给一个例子代码：
就是EJB读取数据库，JavaBean模型调用EJB，然后通过Struts的logic:iterate 循环显示出来。谢谢

to loveyousomuch:jsp:
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<% ArrayList mylyList = (ArrayList)session.getAttribute("lyList"); %>
<logic:iterate id="value" name="mylyList" type="guestbook.maxuan.ejb.entity.value.BookValue" indexId="index">
<bean:write name="value" property="name"/>
</logic:iterate>
我按照你的方法做：出现下面错误：Error 500--Internal Server Error
javax.servlet.jsp.JspException: Cannot find bean mylyList in any scope
at org.apache.struts.taglib.template.InsertTag.doEndTag(InsertTag.java:164)
at jsp_servlet.__index._jspService(__index.java:213)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:971)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:402)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:446)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6350)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3635)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2585)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)

action:    try {
      Object object = ctx.lookup("BookControl");
      BookControlHome bookHome = (BookControlHome) PortableRemoteObject.narrow(
          object, BookControlHome.class);
      BookControl bookControl = bookHome.create();
      ArrayList lyList = bookControl.getLyList();
      session.setAttribute("lyList", lyList);
    }
    catch (Exception e) {
      e.printStackTrace();
    }
    return (actionMapping.findForward("success"));jsp原始代码：
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<jsp:useBean id="lyList" scope="session" type="java.util.ArrayList"/>
<logic:iterate id="value" name="lyList" type="guestbook.maxuan.ejb.entity.value.BookValue" indexId="index">
<bean:write name="value" property="name"/>
</logic:iterate>把<jsp:useBean id="lyList" scope="session" type="java.util.ArrayList"/>
改为
<% ArrayList lyList = (ArrayList)session.getAttribute("lyList"); %>
<logic:iterate id="value" name="lyList" type="guestbook.maxuan.ejb.entity.value.BookValue" indexId="index">
<bean:write name="value" property="name"/>
</logic:iterate>还是出现错误。大侠能否帮忙再修改一遍。

<% ArrayList lyList = (ArrayList)session.getAttribute("lyList"); %>
<logic:iterate id="value" name="lyList" type="guestbook.maxuan.ejb.entity.value.BookValue" indexId="index">
<bean:write name="value" property="name"/>
</logic:iterate>还是出现错误。应该是type这里有问题看来楼主对struts不是很熟啊，
而你的这个例子用倒了太多你陌生的东西，还是一步步的来为好：）

下面是guestbook.maxuan.ejb.entity.value.BookValue的全部代码和ArrayList的代码和Action代码。我不知道错在哪里？请大侠帮忙看看..
-----------------------------------
guestbook.maxuan.ejb.entity.value.BookValue的全部代码：package guestbook.maxuan.ejb.entity.value;
import java.io.*;
public class BookValue
    implements Serializable {
  public java.lang.String name;
  public java.lang.String email;
  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
  public String getEmail() {
    return email;
  }
  public void setEmail(String email) {
    this.email = email;
  }
  private void writeObject(ObjectOutputStream oos) throws IOException {
    oos.defaultWriteObject();
  }
  private void readObject(ObjectInputStream ois) throws ClassNotFoundException,
      IOException {
    ois.defaultReadObject();
  }
}------------------------------------------------------
ArrayList的代码：  public ArrayList getLyList() {
    ArrayList LyList = new ArrayList();
    try {
      javax.naming.Context context = new javax.naming.InitialContext();
      BookHome bookHome = (BookHome) context.lookup("Book");
      Collection lyCntl = bookHome.findAll();
      Iterator iterator = lyCntl.iterator();
      while (iterator.hasNext()) {
        Book book = (Book) iterator.next();
        LyList.add(book.getValue());
      }
    }
    catch (Exception ex) {
      throw new EJBException(ex);
    }
    return LyList;
  }-----------------------------------------------Action代码：    try {
      Object object = ctx.lookup("BookControl");
      BookControlHome bookHome = (BookControlHome) PortableRemoteObject.narrow(
          object, BookControlHome.class);
      BookControl bookControl = bookHome.create();
      ArrayList lyList = bookControl.getLyList();
      session.setAttribute("lyList", lyList);
    }
    catch (Exception e) {
      e.printStackTrace();
    }
    return (actionMapping.findForward("success"));

调试易

Struts错误如何解决呢？

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