jsp显示servlet传来的LIST问题
在servlet里面:
List<ShowBean> l= conns.getuser(dostr);
for(int i=0;i<l.size();i++) {
ShowBean bean=(ShowBean)l.get(i);
System.out.println(bean.getId());
System.out.println(bean.getUsername());
System.out.println(bean.getPsw());
}
request.setAttribute("users", l);
request.getRequestDispatcher("/showuser.jsp").forward(request,response);
返回一个list到jsp上面
然后在jsp就不懂怎么显示啦@!!!求解啊!!
我试过的方法:
List<ShowBean> list=(List)request.getAttribute("users");
ShowBean bean=new ShowBean();
for(int i=0;i<list.size();i++)
{
bean=list.get(i);
}
Showbean是一个实体类。在jsp上面用<%@ page import= "mybean.ShowBean"%> 引入 这样有问题吗??
[解决办法]
居然报错,你ShowBean难道还有两种?
<%@ page import= "mybean.*"%>
<%
List list=(List)request.getAttribute("users");
for(int i=0;i<list.size();i++) {
Object bean = list.get(i);
System.out.println(bean.getClass());
}
%>
看看是啥?
另外如果是JSP2.0的话,可以用EL表达式:
<c:forEach items="users" var="obj">
${obj.XXOO}
</c:forEach>
[解决办法]
[解决办法]
- Java code
<table> <tr> <th>id</th> <th>username</th> <th>psw</th> </tr><% List<ShowBean> list=(List)request.getAttribute("users"); for(int i=0;i<list.size();i++){%> <tr> <th><%=list.get(i).getId()%></th> <th><%=list.get(i).getUsername()%></th> <th><%=list.get(i).getPsw()%></th> </tr><% }%></table>