Question

我有错误

    org.apache.jasper.JasperException: An exception occurred processing JSP page /WEB-INF/views/jsp/players/playersList.jsp at line 39
36:         </thead>
37:         <c:forEach items="${model.playersList}}" var="player" >
38:         <tbody>
39:             <td><c:out value="${player.id}" /> </td>
40:             <td><c:out value="${player.firstName}"/> </td>
41:             <td>$(player.lastName)</td>
42:             <td>$(player.tournamentsIdPlusNameHistory)</td>

和

javax.el.PropertyNotFoundException: Property 'id' not found on type java.lang.String

模型是：

private int id;
private String firstName;
private String lastName;
private String city;
private Array tournamentsIdPlusNameHistory;
private Date lastActivity;
private int rating;
private String rank;
private String email;

使用这样的getter和setter：

public int getId() {
    return id;
}

public void setId(Integer id) {
    this.id =  id;
}

这是一个控制器

public ModelAndView getPlayers(Map<String, Object> model) {
    List<Player> playersList = playerDao.getAll();
    model.put("players", playersList);
    return new ModelAndView("players/playersList", model);
}

这是.jsp文件：

<c:forEach items="${model.playersList}}" var="player" >
    <tbody>
        <td><c:out value="${player.id}" /> </td>
        <td><c:out value="${player.firstName}"/> </td>
        <td>$(player.lastName)</td>
        <td>$(player.tournamentsIdPlusNameHistory)</td>
        <td>$(player.lastActivity)</td>
        <td>$(player.rating)</td>
        <td>$(player.rank)</td>
        <td>$(player.email)</td>
    </tbody>
</c:forEach>

我真的不明白是什么问题，因为我发现了很多像这样的问题，并试图遵循所有的建议，但它仍然不起作用。

Answer 1

您已将模型属性设置为players，其中包含List<Players>。在for循环中，您必须进行这样的更改，

<c:forEach items="${players}" var="player" >
<tbody>
    <td><c:out value="${player.id}" /> </td>
    <td><c:out value="${player.firstName}"/> </td>
    <td>${player.lastName}</td>
    <td>${player.tournamentsIdPlusNameHistory}</td>
    <td>${player.lastActivity}</td>
    <td>${player.rating}</td>
    <td>${player.rank}</td>
    <td>${player.email}</td>
</tbody>
</c:forEach>

打印时，您还使用了圆括号()而不是大括号{}。

Answer 2

如果您有像

这样的实体类

@Entity
class User{
@Id
int id
String name;
String password;
public String getName()//This should be getname or getName if it is something else it will cause issue
{

}
}

Answer 3

我不太确定但是我看到'id'属性设置为私有。

是否可以使用$ {}表达式访问私有成员变量？

javax.el.PropertyNotFoundException：在类型java.lang.String上找不到属性“id”

3 个答案: