Question

我面临一个奇怪的问题。我的页面找不到具有公共访问（获取和设置）并初始化的属性。提出的错误是：

javax.el.PropertyNotFoundException：/empresa.xhtml @ 77,68 value =“＃{empresaManager.empresaEdit.cdEmp}”：目标无法访问，'empresaEdit'返回null

public class Empresa implements Serializable {
    private Integer cdEmp;
    private String deEmp;
    private String nmFtsEmp;

    /* getters and setters */
} 


@ManagedBean(name="empresaManager")
@SessionScoped
public class EmpresaManager extends Base4AllActions implements Serializable, Actions4AllButtons {
    private static final long serialVersionUID = 1L;
    private static EmpresaTransaction empresaTransaction;
    private Empresa empresaEdit = new Empresa();
    private List<Empresa> empresas = new ArrayList<>();
    private String deEmpresaFind;
    private String tpPsq;

    private final static String TPPSQ_BYNAME = "NAME";
    private final static String TPPSQ_BYFANTASY = "FANTASY";

    public EmpresaManager() {
        super();
        empresaTransaction = new EmpresaTransaction();
        this.tpPsq = TPPSQ_BYNAME;
        empresaEdit = new Empresa();
        this.setNone();
    }

    public Empresa getEmpresaEdit() {
        return empresaEdit;
    }

    public void setEmpresaEdit(Empresa empresaEdit) {
        this.empresaEdit = empresaEdit;
    }

    /* getters, setters and other methods */
} 


<p:outputLabel value="#{prompt['empresa-cdEmp']}" for="cdEmp" />
<p:inputText id="cdEmp" value="#{empresaManager.empresaEdit.cdEmp}" required="false"
   size="3" maxlength="4" readonly="#{empresaManager.key}" />
<h:message for="cdEmp" styleClass="errors" />

我正在使用使用Primefaces 6.0的Primefaces Icarus Premium Layout

Answer 1

将代码放在构造函数中由@PostConstruct

注释的新函数中

不要在托管bean类中使用构造函数。

Answer 2

我修好了。 1）我添加了CDI和WELD作为maven依赖项。 2）我改变了视图添加新的表单标签（h：表单）。 3）我通过Named更改了注释ManagedBean。

The corrected project can be downloaded in my google drive:

javax.el.PropertyNotFoundException：/empresa.xhtml @ 77,68 value =“＃{empresaManager.empresaEdit.cdEmp}”：目标无法访问，'empresaEdit'返回null

2 个答案: