Problème d'injection de service dans un bean avec spring

**gabz57** · 14/05/2011, 18h04

Bonjour, je débute sous jsf 2, et j'ai quelques difficultés pour utiliser ma couche service dans un bean. J'ai voulu commencer par qqch de pas trop compliqué comme l'ajout d'un utilisateur mais j'obtiens l'erreur suivante :

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ATTENTION: Multiple JSF Applications found on same ClassLoader.  Unable to safely determine which FactoryManager instance to use. Defaulting to first match.
17:42:16.974 ["http-apr-8080"-exec-4] DEBUG o.h.v.e.r.DefaultTraversableResolver - Found javax.persistence.PersistenceUtil on classpath.
17:42:16.974 ["http-apr-8080"-exec-4] INFO  o.h.v.e.r.DefaultTraversableResolver - Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
17:42:16.976 ["http-apr-8080"-exec-4] DEBUG o.h.v.xml.ValidationXmlParser - No META-INF/validation.xml found. Using annotation based configuration only
14 mai 2011 17:42:17 com.sun.faces.lifecycle.InvokeApplicationPhase execute
ATTENTION: #{userBean.addUser}: java.lang.NullPointerException
javax.faces.FacesException: #{userBean.addUser}: java.lang.NullPointerException
        at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
        at javax.faces.component.UICommand.broadcast(UICommand.java:315)
        at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
        at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
        at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:409)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:399)
        at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:306)
        at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:322)
        at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1732)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
        at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
        at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
        ... 26 more
Caused by: java.lang.NullPointerException
        at fr.covoiturage.bean.user.UserBean.addUser(UserBean.java:74)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.el.parser.AstValue.invoke(AstValue.java:262)
        at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278)
        at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
        at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
        ... 27 more

La page index.xhtml contient le code suivant :

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 <ui:define name="content">
 
                <h2>Add New User</h2>
                <h:form>
 
                    <h:panelGrid columns="3">
 
			Username :
                        <h:inputText id="username" value="#{userBean.username}"
                                     size="20" required="true"
                                     label="Username" >
                        </h:inputText>
 
                        <h:message for="username" style="color:red" />
 
                        Password :
                        <h:inputText id="password" value="#{userBean.password}"
                                     size="20" required="true"
                                     label="Password" >
                        </h:inputText>
                        <h:message for="password" style="color:red" />
                        First Name :
                        <h:inputText id="firstName" value="#{userBean.firstName}"
                                     size="20" required="true"
                                     label="First Name" >
                        </h:inputText>
                        <h:message for="firstName" style="color:red" />
                        Name :
                        <h:inputText id="name" value="#{userBean.name}"
                                     size="20" required="true"
                                     label="Name" >
                        </h:inputText>
                        <h:message for="name" style="color:red" />
 
                    </h:panelGrid>
 
                    <h:commandButton value="Submit" action="#{userBean.addUser}" />
 
                </h:form>
            </ui:define>

Et userBean fonctionne à moitié, si je ne saisis rien la validation m'afficher correctement le message d'erreur, par contre si je saisi correctement des valeurs j'obtiens l'erreur précédente.

UserBean.java

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package fr.covoiturage.bean.user;
 
import fr.covoiturage.entite.user.User;
import fr.covoiturage.entite.user.UserService;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.inject.Inject;
import javax.inject.Named;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
 
/**
 *
 * @author Gabz
 */
 
//@Scope("request")
//@Named("userBean")
@ManagedBean(name="userBean")
@RequestScoped
public class UserBean implements Serializable {
 
    private static final long serialVersionUID = 1L;
    private Integer userId;
    @NotNull(message = "Vous devez saisir un nom")
    @Size(min = 1, max = 16, message = "Entre 1  et 16 caractères")
    private String username;
    @NotNull(message = "Vous devez saisir un nom")
    @Size(min = 6, max = 16, message = "Entre 6  et 16 caractères")
    private String password;
    @NotNull(message = "Vous devez saisir un nom")
    @Size(min = 1, max = 16, message = "Entre 1  et 16 caractères")
    private String firstName;
    @NotNull(message = "Vous devez saisir un nom")
    @Size(min = 1, max = 16, message = "Entre 1  et 16 caractères")
    private String name;
    private Date registrationDate;
 
    /** Creates a new instance of UserBean */
    public UserBean() {
    }
    @Inject
    @Named("userService")
    private UserService userService;
 
    public void setUserService(UserService userService) {
        this.userService = userService;
    }
 
    public UserService getUserService() {
        return userService;
    }
 
    //get all customer data from database
    public List<User> getUserList() {
        try {
            return userService.getAll();
        } catch (Exception e) {
            return new ArrayList<User>(0);
        }
 
    }
 
    public String addUser() {
 
        User user = userService.createUser(getFirstName(), getName(), getUsername(), getPassword());
        // User user = new User(getFirstName(), getName(), getUsername(), getPassword());
        System.out.println(user);
        userService.persist(user);
        clearForm();
        return "";
    }
 
    //clear form values
    private void clearForm() {
        setUsername("");
        setPassword("");
        setFirstName("");
        setName("");
    }
 
// getter et setter
}

J'utilise JSF 2, Spring 3.0.5, JPA et Hibernate, et le tout fonctionne avec tomcat pour le moment (n'ayant pas réussi à utiliser glassfish avec jta...)
Je rajoute mes fichiers de config, mais je ne sais pas où se situe l'erreur

applicationContext.xml

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<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:task="http://www.springframework.org/schema/task"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:security="http://www.springframework.org/schema/security"
       xmlns:jee="http://www.springframework.org/schema/jee"
       xsi:schemaLocation="
         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
         http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
         http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.0.xsd
         http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd
         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
         http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd">
 
<!-- enabling annotation driven configuration-->
    <context:annotation-config/>
 
    <context:component-scan base-package="fr.covoiturage.entite"/>
 
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
        <property name="driverClass" value="org.postgresql.Driver" />
        <property name="jdbcUrl" value="jdbc:postgresql://localhost:5432/covoiturage-uhp"/>
        <property name="user" value="arnaud"/>
        <property name="password" value="*******"/>
        <property name="maxPoolSize" value="20" />
        <property name="maxStatements" value="0" />
        <property name="minPoolSize" value="5" />
    </bean>
    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <property name="showSql" value="true"/>
                <property name="generateDdl" value="true"/>
                <property name="database" value="POSTGRESQL" />
                <property name="databasePlatform" value="org.hibernate.dialect.PostgreSQLDialect"/>
                <!-- Specific properties for Hibernate are in persistence.xml file,
                but also can be placed here and removed from persistence.xml file. -->
            </bean>
        </property>
        <!--<property name="loadTimeWeaver">
            <bean class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver"/>
        </property>-->
        <property name="dataSource" ref="dataSource" />
        <property name="persistenceUnitName" value="covoiturage"/>
    </bean>
 
    <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
 
    <bean name="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>
 
    <tx:annotation-driven />
 
    <security:authentication-manager alias="authenticationManager">
        <security:authentication-provider user-service-ref="userService">
            <security:password-encoder ref="passwordEncoder" hash="sha">
                <security:salt-source ref="saltSource"/>
            </security:password-encoder>
        </security:authentication-provider>
    </security:authentication-manager>
 
    <bean id="passwordEncoder" class="org.springframework.security.authentication.encoding.ShaPasswordEncoder"/>
    <bean id="saltSource" class="org.springframework.security.authentication.dao.ReflectionSaltSource">
        <property name="userPropertyToUse" value="username"/>
    </bean>
</beans>

beans.xml

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<?xml version="1.0" encoding="UTF-8"?>
<beans 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/beans_1_0.xsd">
</beans>

faces-config.xml

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<?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_2_0.xsd"
    version="2.0">
   <application>
        <el-resolver>org.springframework.web.jsf.el.SpringBeanFacesELResolver</el-resolver>
    </application>
</faces-config>

web.xml

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<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
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-app_2_5.xsd">
 
    <display-name>Site web covoiturage-uhp.fr</display-name>
 
    <!-- Add Support for Spring -->
    <listener>
        <listener-class>
		org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>
    <listener>
        <listener-class>
		org.springframework.web.context.request.RequestContextListener
        </listener-class>
    </listener>
    <filter>
        <filter-name>hibernateFilter</filter-name>
        <filter-class>
            org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter
        </filter-class>
    </filter>
 
    <!-- Change to "Production" when you are ready to deploy -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
      <!-- Welcome page -->
    <welcome-file-list>
        <welcome-file>index.xhtml</welcome-file>
    </welcome-file-list>
    <!-- JSF mapping -->
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    </servlet>
    <!-- Map these files with JSF -->
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.jsf</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.xhtml</url-pattern>
    </servlet-mapping>
    <!-- Session Config -->
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
 
 
</web-app>

Il y a aussi un sun-web.xml, généré avec netbeans sans que je le lui demande, et je ne sais pas si j'en ai besoin

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sun-web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Application Server 9.0 Servlet 2.5//EN" "http://www.sun.com/software/appserver/dtds/sun-web-app_2_5-0.dtd">
<sun-web-app error-url="">
  <context-root>/fr.covoiturage-uhp</context-root>
  <class-loader delegate="true"/>
  <jsp-config>
    <property name="keepgenerated" value="true">
      <description>Keep a copy of the generated servlet class' java code.</description>
    </property>
  </jsp-config>
</sun-web-app>

**gabz57** · 14/05/2011, 18h14

Je ne sais pas si cela change qqch, mais mes entités, couche service et dao sont dans un jar que j'ajoute aux librairies, et tomcat les trouve d'après le log qui défile.

Voici aussi leur implémentation pour l'objet User : (j'utilise aussi des classes génériques)

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package fr.covoiturage.entite.user;
 
import fr.covoiturage.entite.security.Authority;
import fr.covoiturage.entite.security.SecUserDetails;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import javax.inject.Inject;
import javax.inject.Named;
import org.springframework.transaction.annotation.Transactional;
import org.slf4j.LoggerFactory;
import org.slf4j.Logger;
import org.springframework.dao.DataAccessException;
import org.springframework.security.authentication.dao.SaltSource;
import org.springframework.security.authentication.encoding.PasswordEncoder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
 
/**
 *
 * @author Gabz
 */
@Transactional
@Service("userService")
public class UserServiceImpl implements UserService, UserDetailsService {
 
    @Inject
    @Named("userDao")
    private UserDAO userDao;
    final Logger log = LoggerFactory.getLogger("ServiceLogger");
 
    public UserServiceImpl() {
    }
    @Inject
    @Named("passwordEncoder")
    private PasswordEncoder passwordEncoder;
    @Inject
    @Named("saltSource")
    private SaltSource saltSource;
 
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException, DataAccessException {
        log.debug("loadUserByUsername with Username {}", username);
 
        try {
            User user = userDao.findByUsername(username);
            if (user == null) {
                log.error("loadUserByUsername failed, User with Username {} not found", username);
                throw new UsernameNotFoundException("No user found with username: " + username);
            } else {
                log.error("loadUserByUsername successful, found {}", user);
                return new SecUserDetails(user);
            }
        } catch (DataAccessException dae) {
            log.error("loadUserByUsername failed, User with Username {} not found, cannot retrieve date from database {}", username, dae);
            throw new UsernameNotFoundException("No user found with username: " + username, dae);
        }
 
    }
 
    @Override
    public User createUser(String firstName, String name, String username, String password) {
        log.debug("create new User");
        User user = new User();
        user.setFirstName(firstName);
        user.setName(name);
        user.setUsername(username);
        user.setPassword(passwordEncoder.encodePassword(password, username));
        user.setAuthorities(defaultAuthorities(user));
        user.setRegistrationDate(new Date());
        user.setEnabled(Boolean.FALSE);
        user.setAccountLocked(Boolean.FALSE);
        user.setCredentialsExpired(Boolean.FALSE);
 
        if (user != null) {
            log.debug("create new User successful, idUser: {}", user.getId());
            return user;
        } else {
            log.error("create new User failed");
            return null;
        }
    }
 
    private Collection<Authority> defaultAuthorities(User user) {
        log.debug("setting Default Granted authorities for new User");
        ArrayList<Authority> authList = new ArrayList<Authority>(0);
        authList.add(new Authority(user, Authority.ROLE_USER));
        return authList;
    }
 
    @Override
    public void changePassword(User user, String password) {
        log.debug("changing password of {}", user);
        try {
            SecUserDetails secUser = (SecUserDetails) loadUserByUsername(user.getUsername());
            String encodedPassword = passwordEncoder.encodePassword(password, saltSource.getSalt(secUser));
            user.setPassword(encodedPassword);
            merge(user);
            log.error("changing password of {} successful", user);
        } catch (RuntimeException e) {
            log.error("changing password of {} failed", user, e);
        }
    }
 
    @Override
    public void persist(User transientUser) {
        log.debug("persist User");
        userDao.persist(transientUser);
        log.debug("persisted: {}", transientUser);
    }
 
    @Override
    public void remove(User persistentUser) {
        log.debug("remove User");
        userDao.remove(persistentUser);
        log.debug("removed: {}", persistentUser);
    }
 
    @Override
    public void remove(Integer userId) {
        log.debug("remove User with id: {}", userId);
        remove(findById(userId));
    }
 
    @Override
    public User merge(User detachedUser) {
        log.debug("merge User");
        User user = userDao.merge(detachedUser);
        log.debug("merged: {}", detachedUser);
        return user;
    }
 
    @Override
    @Transactional(readOnly = true)
    public User findById(Integer userId) {
        log.debug("findById User with id: {}", userId);
        User user = userDao.getById(userId);
        log.debug("found: {}", user);
        return user;
    }
 
    @Override
    @Transactional(readOnly = true)
    public List<User> findByFirstName(String firstName) {
        log.debug("findByFirstName User with firstName: {}", firstName);
        List<User> users = userDao.findByFirstName(firstName);
        log.debug("found: {} users", users.size());
        return users;
    }
 
    @Override
    @Transactional(readOnly = true)
    public List<User> findByName(String name) {
        log.debug("findByName User with name {}", name);
        List<User> users = userDao.findByName(name);
        log.debug("found: {} users", users.size());
        return users;
    }
 
    @Override
    @Transactional(readOnly = true)
    public User findByUsername(String username) {
        log.debug("findByUsername User with username: {}", username);
        User user = userDao.findByUsername(username);
        log.debug("found: {}", user);
        return user;
    }
 
    @Override
    @Transactional(readOnly = true)
    public List<User> getAll() {
        log.debug("getAll");
        List<User> users = userDao.getAll();
        log.debug("found: {} users", users.size());
        return users;
    }
 
    @Override
    @Transactional(readOnly = true)
    public List<User> search(String searchString) {
        log.debug("search with searchString: {}", searchString);
        List<User> users = userDao.search(searchString);
        log.debug("found: {} users", users.size());
        return users;
    }
 
    @Override
    public User findWithContactsById(Integer userId) {
        log.debug("findWithContactsById User with id: {}", userId);
        User user = userDao.findWithContactsById(userId);
        log.debug("found: {}", user);
        return user;
    }

Code :

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package fr.covoiturage.entite.user;
 
import fr.covoiturage.entite.GenericEntityDaoJpa;
import java.util.ArrayList;
import java.util.List;
import javax.inject.Named;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import org.slf4j.LoggerFactory;
import org.slf4j.Logger;
import org.springframework.transaction.annotation.Transactional;
 
/**
 *
 * @author Gabz
 */
@Named("userDao")
@Transactional
public class UserDAOJpa extends GenericEntityDaoJpa<User> implements UserDAO {
 
    @PersistenceContext
    private EntityManager em;
    final Logger log = LoggerFactory.getLogger("DAOLogger");
 
    public UserDAOJpa() {
        super(User.class);
    }
 
    @Override
    @Transactional(readOnly = true)
    public List<User> findByFirstName(String firstName) {
        log.debug("getting User instance with firstName: {}", firstName);
        firstName = "%" + firstName + "%";
        try {
            Query query = em.createQuery("select u from User u where u.firstName like :firstName");
            query.setParameter("firstName", firstName);
            List<User> users = (List<User>) query.getResultList();
            log.debug("findByFirstName successful");
            return users;
        } catch (RuntimeException e) {
            log.error("findByFirstName failed", e);
            return new ArrayList<User>();
        }
    }
 
    @Override
    @Transactional(readOnly = true)
    public List<User> findByName(String name) {
        log.debug("getting User instance with name: {}", name);
        name = "%" + name + "%";
        try {
            Query query = em.createQuery("select u from User u where u.name like :name");
            query.setParameter("name", name);
            List<User> users = (List<User>) query.getResultList();
            log.debug("findByName successful");
            return users;
        } catch (RuntimeException e) {
            log.error("findByName failed", e);
            return new ArrayList<User>();
        }
    }
 
    @Override
    @Transactional(readOnly = true)
    public List<User> search(String searchString) {
        log.debug("Search User instances with search string: {}", searchString);
        searchString = "%" + searchString + "%";
        try {
            Query query = em.createQuery("select u from User u where u.firstName like :searchstring or u.name like :searchstring");
            query.setParameter("searchstring", searchString);
            List<User> users = (List<User>) query.getResultList();
            log.debug("search successful");
            return users;
        } catch (RuntimeException e) {
            log.error("search failed", e);
            return new ArrayList<User>();
        }
    }
 
    @Override
    public User findWithContactsById(Integer userId) {
        log.debug("getting User instance and its contacts list with userId: {}", userId);
        try {
            Query query = em.createQuery("select u from User u left join fetch u.contacts where u.id = :userId");
            query.setParameter("userId", userId);
            User user = (User) query.getSingleResult();
            log.debug("findWithContactsById successful");
            return user;
        } catch (RuntimeException e) {
            log.error("findByFirstName failed", e);
            return null;
        }
    }
 
    @Override
    public User findByUsername(String username) {
        log.debug("getting User instance with username: {}", username);
        try {
            Query query = em.createQuery("select u from User u where u.username = :username");
            query.setParameter("username", username);
            User user = (User) query.getSingleResult();
            log.debug("findByUsername successful");
            return user;
        } catch (RuntimeException e) {
            log.error("findByUsername failed", e);
            return null;
        }
    }
 
 
}

**gabz57** · 15/05/2011, 12h14

Personne pour me dépanner ? J'ai visiblement un problème d'injection du service "userService" dans "userBean", ce qui doit venir de la configuration mais je ne trouve pas de solution...

**DevServlet** · 23/05/2011, 17h57

Effectivement ton pb viendrait de ton service User, il doit être Null au moment de son appel. Peux tu nous montrer l'interface et la classe d'implementation de ce service?

**gabz57** · 25/05/2011, 09h23

J'ai finalement résolu mon problème, j'utilise finalement @ManagedBean@SessionScope, il devait me manquer le jar pour la jsr 330, mais j'avais cru comprendre que cela était embarqué avec spring ou jee...

A la limite je n'ai pas encore beaucoup de classes, donc si au final j'arrivais à faire fonctionner @Named et @Scope, je ferai les modif, mais là du boulot je n'ai pas accès à mes pom.xml

Problème d'injection de service dans un bean avec spring

JSF Java

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