activiti(1):spring集成activiti

在原有的ssm框架中集成activiti，只需添加activiti依赖和向spring的配置文件中引入activiti的配置文件即可：

1 pom依赖;5.20.0版本

	<dependency>
		<groupId>org.activiti</groupId>
		<artifactId>activiti-engine</artifactId>
		<version>5.20.0</version>
	</dependency>
	<dependency>
		<groupId>org.activiti</groupId>
		<artifactId>activiti-spring</artifactId>
		<version>5.20.0</version>
	</dependency>

2 配置文件的引入

	<import resource="activiti-contenxt.xml" />

3 activiti配置文件

<bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
		<property name="dataSource" ref="dataSource"></property>
		<property name="transactionManager" ref="txManager"></property>
		<property name="databaseSchemaUpdate" value="true"></property>
		<property name="deploymentResources">
			<list>
				<value>classpath*:/activiti/*</value>
			</list>
		</property>
	</bean>

	<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
		<property name="processEngineConfiguration" ref="processEngineConfiguration"></property>
	</bean>

	<bean id="repositoryService" factory-bean="processEngine"
		factory-method="getRepositoryService"></bean>
	<bean id="runtimeService" factory-bean="processEngine"
		factory-method="getRuntimeService" />
	<bean id="formService" factory-bean="processEngine"
		factory-method="getFormService" />
	<bean id="identityService" factory-bean="processEngine"
		factory-method="getIdentityService" />
	<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" />

4 activiti配置文件解读

4.1 processEngineConfiguration 将activiti的引擎配置到spring容器中

4.2 dataSource 使用spring管理的数据源

4.3 transactionManager 使用spring管理的事务管理器

4.4 databaseSchemaUpdate 数据库脚本更新策略

false：什么都不做

true：表不存在时，自动创建或者升级

create-drop：创建引擎时初始化表，销毁引擎时删除表

4.5 deploymentResources：创建引擎时自动部署指定流程文件

4.6 其他bean：activiti核心对象配置到spring容器中