Arquivo Discussoes de Programacao e Tecnologia 
Olá estou com uma dúvida muito básica ao meu ver!
Tenho um servlet que é chamada pelo FLEX ,
e ela tem ki fazer uma busca no banco de dados…
Não estou sabendo como fazer essa declaração da BUsiness ou da DAO?
@Autowired
private IProUnidadeBusiness unidadeBusiness;
dessa maneira retorno NULL.
Alguém poderia me ajudar?
grato…
Ta usando spring pra injetar essa dependencia??? Se tiver, posta teu AplicationContext.xml…
Boa tarde
Pelo que estou vendo você esta usando Spring para realizar a injeção, você precisa que a instância da Servlet seja vista também pelo contexto do Spring, para que assim ele possa realizar a injeção das dependências, uma forma de fazer isso é colocar no método init da servlet um método que faça com que o Spring tenha acesso a Servlet.
Tente assim:
SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);
Até mais.
application-context.xml
<?xml version="1.0" encoding="UTF-8"?><!-- ########################################## -->
<!-- ## Integração do Spring com o Hibernate ## -->
<!-- ########################################## -->
<!-- Arquivos de configuracao *.properties -->
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:/jdbc.properties</value>
</list>
</property>
</bean>
<!-- Configuracao de dataSource utilizando pool de conexoes -->
<bean id="datasource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${database.driver}" />
<property name="url" value="${database.url}" />
<property name="username" value="${database.user}" />
<property name="password" value="${database.pass}" />
<!-- configuracao do pool DBCP -->
<property name="initialSize" value="0" />
<property name="maxActive" value="3" />
<property name="maxIdle" value="2" />
<property name="minIdle" value="0" />
<property name="maxWait" value="-1" />
<property name="validationQuery" value="select 1" />
<property name="testOnBorrow" value="true" />
<property name="testOnReturn" value="false" />
<property name="testWhileIdle" value="false" />
<property name="timeBetweenEvictionRunsMillis" value="-1" />
<property name="numTestsPerEvictionRun" value="3" />
<property name="minEvictableIdleTimeMillis" value="1800000" /> <!-- 30 * 60seg * 1000miliseg = 30min -->
</bean>
<!-- Session Factory junto ao Spring -->
<bean id="sessionFactory" class="br.com.cse.sistemas.projeto.controller.AnnotationOptimizedSessionFactoryBean" dependency-check="none">
<property name="dataSource" ref="datasource" />
<property name="namingStrategy">
<bean class="org.hibernate.cfg.DefaultComponentSafeNamingStrategy" />
</property>
<property name="basePackage">
<value>br.com.cse.sistemas.projeto.entity</value>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${database.dialect}</prop>
<prop key="hibernate.current_session_context_class">thread</prop>
<prop key="hibernate.generate_statistics">false</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.format_sql">false</prop>
<!--
<prop key="hibernate.hbm2ddl.auto">update</prop>
-->
<prop key="hibernate.default_schema">${database.defaultschema}</prop>
<prop key="hibernate.cache.provider_configuration_file_resource_path">ehcache.xml</prop>
<prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</prop>
<prop key="hibernate.cache">true</prop>
<prop key="hibernate.cache.use_query_cache">true</prop>
<prop key="hibernate.cache.use_structured_cache">true</prop>
<prop key="hibernate.cache.use_second_level_cache">true</prop>
<prop key="hibernate.cache.use_structured_entries">true</prop>
<prop key="hibernate.query.substitutions">true '1', false '0'"</prop>
</props>
</property>
<property name="eventListeners">
<map>
<entry key="merge">
<bean
class="org.springframework.orm.hibernate3.support.IdTransferringMergeEventListener" />
</entry>
</map>
</property>
</bean>
<!-- ###################### Transaction Manager ###################### -->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" >
<ref local="sessionFactory" />
</property>
</bean>
<!--
Habilita os Services para serem transicionais via a Annotation
@Transactional
-->
<tx:annotation-driven transaction-manager="transactionManager" />
<!-- ################ COMPONENTES ################## -->
<bean id="conversorFactory" class="br.com.cse.sistemas.projeto.components.factory.ConversorFactoryController"></bean>
<bean id="transformador" class="br.com.cse.sistemas.projeto.components.transformador.TransformadorController">
<property name="conversorFactory">
<ref local="conversorFactory" />
</property>
</bean>
<!-- ################ SCANS ################## -->
<!-- ============================== AOP DEFINITIONS ================================ -->
<!-- ==================== BUSINESS OBJECT DEFINITIONS ======================== -->
<!--
Activates various annotations to be detected in bean classes: Spring's
@Required and @Autowired, as well as JSR 250's @Resource.
-->
<context:annotation-config />
<!-- Carrega os Beans de Servico -->
<context:component-scan base-package="br.com.cse.sistemas.projeto.business" />
<!-- Carrega os Beans de Servico -->
<context:component-scan base-package="br.com.cse.sistemas.projeto.components" />
<context:component-scan base-package="br.com.cse.sistemas.projeto.controller.security" />
<!-- Carrega os Beans DAO Hibernate -->
<context:component-scan base-package="br.com.cse.sistemas.projeto.dao" />
vLW GALERA.DEU CERTO!
public void init(ServletConfig config)
{
try {
super.init(config);
} catch (ServletException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);
}