Question

我正在使用Spring，Hibernate和JSf创建一个使用Netbeans的Web应用程序。当我运行我的应用程序时，我没有错误，应用程序已部署但在我的JSF中没有出现列表

我不知道自己要做什么请帮助我，并提前致谢

我的listUniv.xhtml

<?xml version="1.0" encoding="UTF-8"?>
<!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://xmlns.jcp.org/jsf/html"
   xmlns:f="http://java.sun.com/jsf/core"
   xmlns:p="http://primefaces.org/ui"
   xmlns:fn="http://java.sun.com/jsp/jstl/functions">

<h:head/>
  <h:body>
    <h1>Liste des universités</h1>
        <h:form id="mainForm">
                    <h:outputText value="#{fn:length(universiteBean.listUniversites)}" />

    <p:dataList id="lista" var="Universite1" value="#{universiteBean.listUniversites}" emptyMessage="aucune universite trouvée!">
        <li><h:outputText value="#{Universite1.libelle}" />  
        </li>
    </p:dataList>

                <p:commandButton value="ajouter" action="#{universiteBean.nouveau()}"/>

        </h:form>
  </h:body>
</html>

我的web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
        http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
 version="3.1">
<context-param>
    <param-name>javax.faces.PROJECT_STAGE</param-name>
    <param-value>Development</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>*.jsf</url-pattern>
</servlet-mapping>
<session-config>
    <session-timeout>
        30
    </session-timeout>
</session-config>
<welcome-file-list>
    <welcome-file>listUniv.jsf</welcome-file>
</welcome-file-list>
<listener>
    <listener-class>org.springframework.security.web.session.HttpSessionEventPublisher</listener-class>
</listener>
<!--  1ere  -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!--  2 eme -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <!--        <param-value>/WEB-INF/spring-beans.xml</param-value>-->
    <param-value>classpath:applicationContext.xml</param-value>

</context-param>

</web-app>

我的applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:tx="http://www.springframework.org/schema/tx"
   xmlns:context="http://www.springframework.org/schema/context"
   xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-beans-3.1.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-beans-3.1.xsd">


<!-- BEAN DE LA DATA SOURCE -->
<bean id="dataSource"
      class="org.apache.commons.dbcp.BasicDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="jdbc:mysql://localhost:3306/formadb?zeroDateTimeBehavior=convertToNull" />
    <property name="username" value="root" />
    <property name="password" value="root" />
</bean> 

<!-- BEAN DE LA FABRIQUE DE SPRING avec definition du mapping-->
<bean id="sessionFactoryBean" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
    <property name="dataSource" ref="dataSource"/>

    <property name="configLocation" >
        <value>classpath:hibernate.cfg.xml</value>
    </property>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
            <prop key="hibernate.show_sql">true</prop>
        </props>
    </property>
</bean> 

<!-- Ajout d'un bean de gestion des transactions -->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <!-- Lui définir le sessionFactory qui devra exploiter -->
    <property name="sessionFactory" ref="sessionFactoryBean"/>          
</bean>


<!-- BEAN UNIVERSITE -->
<bean id="universiteDao" class="dao.UniversiteDaoImpl">
    <property name="sessionFactory">
        <ref local="sessionFactoryBean"/>
    </property>        
</bean>
<bean id="universiteMetier" class="metier.UniversiteMetier" init-method="init">
    <property name="universiteDao" ref="universiteDao"/>
</bean>


<!-- BEAN COMPOSANTE-->
<bean id="composanteDao" class="dao.ComposanteDaoImpl">
    <property name="sessionFactory">
        <ref local="sessionFactoryBean"/>
    </property>
</bean>
<bean id="composanteMetier" class="metier.ComposanteMetier">
    <property name="composanteDao" ref="composanteDao"/>
</bean>

我在hibernate.cfg.xml中使用了映射类

我的Dao课程：

package dao;

import entites.Universite;
import java.util.List;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

public class UniversiteDaoImpl extends HibernateDaoSupport implements IUniversiteDao{


@Override
public void addUniversite(Universite universite) {
        getHibernateTemplate().save(universite);
}

@Override
public void updateUniversite(Universite univ) {
    getHibernateTemplate().update(univ);
}

@Override
public void deleteUniversite(Universite univ) {
    getHibernateTemplate().delete(univ);
}

@Override
public List findListUniversite() {
    return getHibernateTemplate().find("from entites.Universite");
}

@Override
public Universite findUniversite(String libelle) {
    List l= getHibernateTemplate().find("from entites.Universite univ where univ.libelle='"+libelle+"'");
    if (l.size()> 0) {
        return (Universite) l.get(0);
    } else 
        return null;
}

public void init() {
    System.out.println("-------UniversiteDaoImp-----------");
}
}

我的班级服务

package metier;

import dao.IUniversiteDao;
import entites.Universite;
import exceptions.ObjtNotFoundException;
import java.util.List;

public class UniversiteMetier implements IUniversiteMetier{

private IUniversiteDao universiteDao;

public void setUniversiteDao(IUniversiteDao universiteDao) {
    this.universiteDao = universiteDao;
}

@Override
public void addUniversite(String libelle, String abreviation, String description) {
    Universite univ= new Universite(libelle, abreviation, description);
    universiteDao.addUniversite(univ);
}

@Override
public void updateUniversite(String libelle, String abreviation, String description) throws ObjtNotFoundException {
    Universite univ= universiteDao.findUniversite(libelle);
    if (univ== null) {
        throw new ObjtNotFoundException();
    }
    univ.setLibelle(libelle);
    universiteDao.updateUniversite(univ);
}

@Override
public List findListUniversite() {
    return universiteDao.findListUniversite();
}

@Override
public Universite findUniversite(String libelle) throws ObjtNotFoundException {
    Universite univ= universiteDao.findUniversite(libelle);
    if (univ== null) {
        System.out.println("universite introuvable!!!");
        throw new ObjtNotFoundException();
    }
    return univ;
}

@Override
public void deleteUniversite(String libelle) throws ObjtNotFoundException {
    Universite univ= universiteDao.findUniversite(libelle);
    if (univ== null) {
        throw new ObjtNotFoundException();
    }
    universiteDao.deleteUniversite(univ);
}

public void init(){
System.out.println("-------UniversiteMetierImp-----------");
}
}

和我的Bean

package web;

import entites.Universite;
import java.io.Serializable;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.faces.bean.ViewScoped;
import metier.UniversiteMetier;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component("universiteBean")
//@Scope("session")
@ViewScoped
public class UniversiteBean implements Serializable{

private List<Universite> listUniversites;
@Autowired
private transient UniversiteMetier universiteMetier;

private Universite universite;

public UniversiteBean() {
}

    @PostConstruct
public void init(){
    refresh();
    System.out.println("eeeeeeeeeeeeee"+listUniversites.size());
}

public void refresh(){
    listUniversites= universiteMetier.findListUniversite();
}

public List<Universite> getListUniversites() {
    return listUniversites;
}

public void setListUniversites(List<Universite> listUniversites) {
    this.listUniversites = listUniversites;
}

public UniversiteMetier getUniversiteMetier() {
    return universiteMetier;
}

public void setUniversiteMetier(UniversiteMetier universiteMetier) {
    this.universiteMetier = universiteMetier;
}

public Universite getUniversite() {
    return universite;
}

public void setUniversite(Universite universite) {
    this.universite = universite;
}
}

Answer 1

更新：请将此代码缩小到最小，可验证的示例。您应该放入一些System.out.println调试语句，以查看事情是否正常运行。查看PostConstruct是否被调用。添加调试语句以查明PostConstruct是否将项目放入列表并更新问题。如果未调用PostConstruct例程，则JSF页面bean注释错误或引用不正确。将硬编码的项目放入列表中，并确定是否正确设置了primefaces datalist。这些是经过尝试的真正的调试技术，每个程序员都需要理解和掌握。

编辑：我很确定你不希望你将bean作为Component。这意味着您正在构建一个独特的JSF组件。试试ManagedBean。

我不能用JSF，Spring和Hibernate来显示列表

1 个答案: