Question

我在点击登录按钮时尝试重定向jsf页面，但它不起作用。在我的情况下，当我点击登录按钮检查是否在数据库中找到用户，一旦找到它，系统重定向到页面utitled2.jsf 我在jdeveloper下使用J2ee。有人请帮助我???

这是我在sessionEJB中的功能

public UserEntity authentification(String login, String pwd) {

        try{
            Query query;
            query = em.createQuery("select o from UserEntity o where " + " o.login = :LOGIN AND o.pwd = :PWD");
            query.setParameter("LOGIN",login);
            query.setParameter("PWD",pwd);
     return       
                 (UserEntity) query.getSingleResult();





        }
        catch(Exception e){
                e.printStackTrace();
                return null;
        }

    }

这是我的支持

public String loginaction() {

        BindingContainer bindings = getBindings();
        OperationBinding operationBinding = bindings.getOperationBinding("authentification");
        Object result = operationBinding.execute();
        if (!operationBinding.getErrors().isEmpty()) {
            return "success";
        }
        return null;
    }

这是我的faces-config

<?xml version="1.0" encoding="windows-1256"?>
<faces-config version="2.1" xmlns="http://java.sun.com/xml/ns/javaee">
  <application>
    <default-render-kit-id>oracle.adf.rich</default-render-kit-id>
  </application>
  <navigation-rule>
    <from-view-id>/login.jsf</from-view-id>
    <navigation-case>
      <from-action>#{backing_login.loginaction}</from-action>
      <from-outcome>success</from-outcome>
      <to-view-id>/untitled2.jsf</to-view-id>
      <redirect/> 
    </navigation-case>
  </navigation-rule>
</faces-config>

这是我的login.JSF

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE html>
<f:view xmlns:f="http://java.sun.com/jsf/core" xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
    <af:document title="login.jsf" id="d1" binding="#{backingBeanScope.backing_login.d1}">
        <af:messages binding="#{backingBeanScope.backing_login.m1}" id="m1"/>
        <af:form id="f1" binding="#{backingBeanScope.backing_login.f1}">
            <af:panelFormLayout id="pfl1" binding="#{backingBeanScope.backing_login.pfl1}">
                <af:inputText value="#{bindings.login.inputValue}" label="#{bindings.login.hints.label}"
                              required="#{bindings.login.hints.mandatory}"
                              columns="#{bindings.login.hints.displayWidth}"
                              maximumLength="#{bindings.login.hints.precision}"
                              shortDesc="#{bindings.login.hints.tooltip}" id="loginfield"
                              binding="#{backingBeanScope.backing_login.it1}">
                    <f:validator binding="#{bindings.login.validator}"/>
                </af:inputText>
                <af:inputText value="#{bindings.pwd.inputValue}" label="#{bindings.pwd.hints.label}"
                              required="#{bindings.pwd.hints.mandatory}" columns="#{bindings.pwd.hints.displayWidth}"
                              maximumLength="#{bindings.pwd.hints.precision}" shortDesc="#{bindings.pwd.hints.tooltip}"
                              id="it2" binding="#{backingBeanScope.backing_login.it2}">
                    <f:validator binding="#{bindings.pwd.validator}"/>
                </af:inputText>
                <af:button text="authentification"
                           disabled="#{!bindings.authentification.enabled}" id="b1"
                           binding="#{backingBeanScope.backing_login.b1}"
                           action="#{backingBeanScope.backing_login.loginaction}"/>
            </af:panelFormLayout>
        </af:form>
    </af:document>
    <!--oracle-jdev-comment:auto-binding-backing-bean-name:backing_login-->
</f:view>

Answer 1

在你的支持bean方法loginaction中，你应该返回一个字符串对象，而不是返回null（这意味着你要告诉JSF保持当前视图），你可以在其中返回页面的名称希望功能重定向应该包括在内。如果您正在处理面部应用程序，则此格式应该有效（否则它应该类似，只需在线检查）：

return "/faces/nameOfPageToRedirect.jsf?faces-redirect=true";

从按钮重定向JSF页面

1 个答案: