我在页面中提取数据库中一个字段的值,代码如下
<html:select property="groupid">
<html:options collection="list" property="groupname" labelProperty="groupname"/>
</html:select>
我在登陆的时候,将list赋值,并放入session。在页面中有提取
List list = (List)session.getAttribute("list");
在登陆时打印出来,有值,页面中打印出来也有值。现在我打开此页面却报错。
Cannot find bean under name list
不知道那里出了错,请各位帮帮我。在线等。
这是我的类
public class group {
private String groupid;
private String groupname;
private String grouplevel;
private String upgroup;
public String getGroupid() {
return groupid;
}
public void setGroupid(String groupid) {
this.groupid = groupid;
}
public String getGrouplevel() {
return grouplevel;
}
public void setGrouplevel(String grouplevel) {
this.grouplevel = grouplevel;
}
public String getGroupname() {
return groupname;
}
public void setGroupname(String groupname) {
this.groupname = groupname;
}
public String getUpgroup() {
return upgroup;
}
public void setUpgroup(String upgroup) {
this.upgroup = upgroup;
}
}
这是把类放入list
public List findgroup(){
List list = new ArrayList();
rs = null;
if(cnn != null){
try {
stmt = cnn.createStatement();
rs = stmt.executeQuery("select * from User_Group");
//stmt.close();
System.out.println(rs);
while(rs.next()){
group group = new group();
group.setGroupid(rs.getString("GroupId"));
group.setGroupname(rs.getString("GroupName"));
group.setGrouplevel(rs.getString("GroupLevel"));
group.setUpgroup(rs.getString("upGroup"));
list.add(group);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return list;
}
return list;
}