javax.el.PropertyNotFoundException : Property 'AuthFirstName' not found on type entity.

Question

实体:

package entity;

import java.io.Serializable;

public class Authors implements Serializable {

    private String AuthFirstName;

    public Authors() {
    }

    public String getAuthFirstName() {
        return AuthFirstName;
    }

    public void setAuthFirstName(String AuthFirstName) {
        this.AuthFirstName = AuthFirstName;
    }

}

Servlet:

 List listAuthors = authDAO.findAuthors();
 request.setAttribute("lista", listAuthors);

JSP:

<c:forEach var="var" items="${lista}">
    <c:out value="${var.AuthFirstName}"/>
</c:forEach>

异常(exception):

javax.el.PropertyNotFoundException: Property 'AuthFirstName' not found on type entity.Authors

这是怎么造成的，如何解决？

Answer 1

它应该以小写字母开头。

<c:out value="${var.authFirstName}" />

此外，将底层属性名称修复为以小写开头也很好，尽管它在功能上没有损害。

private String authFirstName;

另请参阅:

• Javabeans specification
• Java naming conventions .