我正在尝试根据此Tutorial显示带有挂毯的网格，但出现此错误Class mypack.pages.User has been transformed and may not be directly instantiated
这些是我的班级用户
public class User {
@NonVisual
private long id;
private String firstName;
private String lastName;
private int age;
public long getId() { return id; }
public void setId(long id) { this.id = id; }
public String getFirstName() { return firstName; }
public void setFirstName(String firstName) { this.firstName = firstName; }
public String getLastName() { return lastName; }
public void setLastName(String lastName) { this.lastName = lastName; }
public int getAge() { return age; }
public void setAge(int age) { this.age = age; }
public User(long id, String firstName, String lastName, int age) {
super();
this.id = id;
this.firstName = firstName;
this.lastName = lastName;
this.age = age;
}
}
Bellilpage.java
public class Bellilpage {
@Property
private User user;
public List<User> getUsers() {
List<User> dd= new ArrayList<User>();
for(int x=0;x<1;x++)
{
Random rand = new Random();
long d= rand.nextInt(50);
User myuser = new User(d, "Name N° "+d, "lastName N "+d, (int) (d+15));
dd.add(myuser);
}
return dd; }
}
最后这就是我尝试在网页中显示网格的方式
Bellilpage.tml
<html t:type="layout" title="tapestrythetest Index"
t:sidebarTitle="Framework Version"
xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd"
xmlns:p="tapestry:parameter">
<!-- A Zone is a component that can be updated in place, triggered by other components. -->
<t:zone t:id="zone">
<h1>List Users</h1>
<t:grid source="users" row="user">
<p:lastNameCell>
${user.lastname}
</p:lastNameCell>
</t:grid>
</t:zone>
<p:sidebar>
</p:sidebar>
</html>
为什么打开Bellilpage.tml时会出现此错误？
最佳答案
由于mypack.pages是T5受控程序包，因此出现错误。将您的User类移至其他包，例如到mypack.entities。有关更多信息，请参见Component Classes，尤其是“组件包”部分。