0

表单不提交给 bean。

login.xhtml

<h:form>
    <p:panel header="Login">  
        <p:messages id="msgs" showDetail="true"/>
        <h:panelGrid columns="2" columnClasses="column" cellpadding="5">
            <h:outputLabel for="user" value="Username" />
            <h:inputText id="user" value="#{login.username}" />

            <h:outputLabel for="pw" value="Passwort" />
            <h:inputSecret id="pw" redisplay="false" value="#{login.password}" />
        </h:panelGrid>
        <p:button value="Anmelden" action="#{login.login}" type="submit" />
    </p:panel>
</h:form>

Login.java

@ManagedBean
@ViewScoped
public class Login {

    private FacesContext fCtx;
    private String username;
    private String password;

    public Login() {
        fCtx = FacesContext.getCurrentInstance();
    }

    public String login(){
        HttpSession session = (HttpSession) fCtx.getExternalContext().getSession(false);
        String sessionId = session.getId();
        fCtx.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO,"Info: ", getUsername()+", "+getPassword()+", "+sessionId));  

        return "login.xhtml";
    }


    public void setUsername(String username) {
        this.username = username;
    }
    public String getUsername() {
        return username;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getPassword() {
        return password;
        }
    }

日志中甚至没有异常。有什么问题，我该如何解决？

4

1 回答 1

1

不提交父表单，它只是一个钩子，<p:button>能够在按下按钮时执行一些 JS 代码，而不打算提交任何 POST 表单。将其替换为<p:commandButton>。此外，您还想在提交后添加update="msgs"以刷新组件。id="msgs"

与具体问题无关，您不想使用getSession(false)，因为它可能会返回null. 只需使用getSession(true).

于 2011-01-05T13:52:55.160 回答