Como acessar um bean de primavera no Activiti JavaDelegate?
Estou tentando obter um exemplo simples do Spring para trabalhar com o Activiti 5.5 e tendo alguns problemas. Estou usando o mecanismo de processo configurado com activiti em% activiti_home% / apps / apache-tomcat-6.0.32 / webapps / activiti-rest.
Modifiquei o arquivo de configuração do spring para que ele inclua meu arquivo de configuração customizado do spring:
<import resource="classpath*:applicationContext*.xml"/>
Implantei meu arquivo applicationContext.xml na pasta activiti-rest / WEB-INF / classes. O Activiti inicia bem, e vejo o System.out.println no meu construtor de beans, então sei que minha configuração de primavera está sendo lida e o bean está sendo construído. Eu criei um spring bean para a classe que implementa JavaDelegate e injetou meu bean nele e ele sempre é nul
Aqui está o meu Spring Config:
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-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/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<bean id="myBean" class="org.bpmn.examples.MyBean"/>
<bean id="taskBean" class="org.bpmn.examples.GetBeanTest">
<property name="myBean" ref="myBean"/>
</bean>
</beans>
Aqui está o meu Bean:
package org.bpmn.examples;
import java.io.Serializable;
public class MyBean implements Serializable {
public MyBean() {
super();
System.out.println("<========================== myBean ===========================>");
System.out.println("<========================== myBean ===========================>");
System.out.println("<========================== myBean ===========================>");
}
/**
*
*/
private static final long serialVersionUID = -2867207654072787909L;
Long id;
String description;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}
Aqui está minha classe que implementa o JavaDelegate:
package org.bpmn.examples;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;
public class GetBeanTest implements JavaDelegate {
private MyBean myBean;
@Override
public void execute(DelegateExecution execution) throws Exception {
if(myBean == null){
System.out.println("Bean was null!");
}else{
System.out.println("Bean is valid!");
}
}
public void setMyBean(MyBean myBean) {
this.myBean = myBean;
}
}
Isso tudo parece bastante direto para mim, no entanto, acho que o problema é que a Activiti não está usando um bean de mola na classe que está sendo chamada na minha tarefa JavaService, está criando uma nova instânci
<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
<process id="TestSpringConfig" name="TestSpringConfig">
<documentation>Place documentation for the 'TestSpringConfig' process here.</documentation>
<startEvent id="startevent1" name="Start"></startEvent>
<serviceTask id="servicetask1" name="BeanTest" activiti:class="org.bpmn.examples.GetBeanTest"></serviceTask>
<endEvent id="endevent1" name="End"></endEvent>
<sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="servicetask1"></sequenceFlow>
<sequenceFlow id="flow2" name="" sourceRef="servicetask1" targetRef="endevent1"></sequenceFlow>
</process>
</definitions>
Como obtenho uma referência a um Spring Bean, um simples como o que tenho aqui ou que foi configurado como uma Entidade JPA?
Qualquer / Todas as respostas apreciadas!
6.28.2011 Atualizado: Ao tentar alterar o aplicativo activiti-rest para usar o SpringProcessEngineConfiguration em vez do StandaloneProcessEngineConfiguration independente, alterei o arquivo activiti-cfg.xml no arquivo activiti-cfg.jar e reiniciei o Tomcat.
Altero o arquivo xml para ficar assim:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="dataSource" class="org.springframework.jdbc.datasource.SimpleDriverDataSource">
<property name="driverClass" value="org.h2.Driver" />
<property name="url" value="jdbc:h2:tcp://localhost/activiti" />
<property name="username" value="sa" />
<property name="password" value="" />
</bean>
<bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration"/>
<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
<property name="processEngineConfiguration" ref="processEngineConfiguration" />
</bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
<property name="dataSource" ref="dataSource" />
<property name="transactionManager" ref="transactionManager" />
<property name="databaseSchemaUpdate" value="true" />
<property name="jobExecutorActivate" value="false" />
</bean>
<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
<property name="processEngineConfiguration" ref="processEngineConfiguration" />
</bean>
<bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />
<bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService" />
<bean id="taskService" factory-bean="processEngine" factory-method="getTaskService" />
<bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService" />
<bean id="managementService" factory-bean="processEngine" factory-method="getManagementService" />
</beans>
Quando reiniciei o Tomcat, nenhuma exceção aparece; no entanto, quando eu mostro o Explorer e tento fazer login, recebo a seguinte exceção:
INFO: Server startup in 12011 ms
10:32:02,338 ERROR [extensions.webscripts.AbstractRuntime] Exception from executeScript - redirecting to status template error: 05280000 Wrapped Exception (with status template): null
org.springframework.extensions.webscripts.WebScriptException: 05280000 Wrapped Exception (with status template): null
at org.springframework.extensions.webscripts.AbstractWebScript.createStatusException(AbstractWebScript.java:742)
at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:167)