我正在使用带有primefaces的jsf开发Web应用程序，我使用了一个登录操作和2个xhtml页面。当我登录时调用动作类，它不会返回到下一个xhtml页面
重定向页面的问题我已经使用了primefaces 3.2版本的jar文件，并且我在项目方面配置了jsf和jstl。
我的登录xhtml页面
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<h:head></h:head>
<body>
<h:form styleClass="loginPanelStyle">
<p:panel id="panel" header="Login">
<p:messages id="msgs"/>
<h:panelGrid columns="3">
<h:outputLabel for="firstname" value="UserName" />
<p:inputText id="firstname" value="#{home.username}" required="true" label="UserName">
<f:validateLength minimum="2" />
</p:inputText>
<p:message for="firstname" display="icon"/>
<h:outputLabel for="surname" value="Password" />
<p:inputText id="surname" value="#{home.password}" label="Password" required="true">
<f:validateLength minimum="2" />
<p:ajax update="msgSurname" event="keyup" />
</p:inputText>
<p:message for="surname" id="msgSurname" display="icon"/>
</h:panelGrid>
<p:commandButton id="btn" value="Login" update="panel" actionListener="#{home.validateUser}"/>
</p:panel>
</h:form>
</body>
</html>
我的动作类
package com.cation.action;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.Query;
import logon.Users;
public class LoginAction {
private String username;
private String password;
private static final String PERSISTENCE_UNIT_NAME = "Cation";
private static EntityManagerFactory factory;
@SuppressWarnings("unchecked")
public String validateUser() throws Exception {
factory = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME);
EntityManager em = factory.createEntityManager();
// Read the existing entries and write to console
Query q = em.createQuery("SELECT u FROM Users u where u.Login='"+username+"'");
List<Users> userList = q.getResultList();
Users user = (Users) userList.get(0);
if(user == null){
return "error";
}
return "home_page";
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
我的web.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>Cation</display-name>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
<welcome-file-list>
<welcome-file>faces/login.xhtml</welcome-file>
</welcome-file-list>
<listener>
<listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
</listener>
<context-param>
<param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
<param-value>resources.application</param-value>
</context-param>
<context-param>
<description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>client</param-value>
</context-param>
<context-param>
<description>
This parameter tells MyFaces if javascript code should be allowed in
the rendered HTML output.
If javascript is allowed, command_link anchors will have javascript code
that submits the corresponding form.
If javascript is not allowed, the state saving info and nested parameters
will be added as url parameters.
Default is 'true'</description>
<param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<description>
If true, rendered HTML code will be formatted, so that it is 'human-readable'
i.e. additional line separators and whitespace will be written, that do not
influence the HTML code.
Default is 'true'</description>
<param-name>org.apache.myfaces.PRETTY_HTML</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<description>
If true, a javascript function will be rendered that is able to restore the
former vertical scroll on every request. Convenient feature if you have pages
with long lists and you do not want the browser page to always jump to the top
if you trigger a link or button action that stays on the same page.
Default is 'false'
</description>
<param-name>org.apache.myfaces.AUTO_SCROLL</param-name>
<param-value>true</param-value>
</context-param>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
<url-pattern>*.jsf</url-pattern>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
</web-app>
和我的faces-config xml文件
<?xml version='1.0' encoding='UTF-8'?>
<faces-config xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"
version="1.2">
<navigation-rule>
<navigation-case>
<from-outcome>login</from-outcome>
<to-view-id>/login.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
<managed-bean>
<managed-bean-name>home</managed-bean-name>
<managed-bean-class>com.cation.action.LoginAction</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<navigation-rule>
<navigation-case>
<from-outcome>home_page</from-outcome>
<to-view-id>/pages/homePage.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
<managed-bean>
<managed-bean-name>user</managed-bean-name>
<managed-bean-class>com.cation.action.UserAction</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<navigation-rule>
<navigation-case>
<from-outcome>addUser</from-outcome>
<to-view-id>/pages/addUser.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
<navigation-rule>
<navigation-case>
<from-outcome>successUser</from-outcome>
<to-view-id>/pages/success.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
</faces-config>
任何人都可以帮我解决这个问题
答案 0 :(得分：2)
要使用p:commandButton导航，您需要使用action属性，而不是actionListener。
按照以下方式更改按钮：
<p:commandButton id="btn" value="Login" update="panel" action="#{home.validateUser}"/>
您的代码中其他一切似乎都很好。
更多信息：