整合步骤
1、创建Maven工程,导入pom依赖。
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.coydone</groupId>
<artifactId>act-spring-demo</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<slf4j.version>1.6.6</slf4j.version>
<log4j.version>1.2.12</log4j.version>
<activiti.version>7.1.0.M6</activiti.version>
</properties>
<dependencies>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-engine</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-spring</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-bpmn-model</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-bpmn-converter</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-json-converter</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-bpmn-layout</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti.cloud</groupId>
<artifactId>activiti-cloud-services-api</artifactId>
<version>7.0.0.Beta1</version>
</dependency>
<dependency>
<groupId>aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.5.4</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.40</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.2.20.RELEASE</version>
</dependency>
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-nop</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- log end -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.5</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>alfresco</id>
<name>Activiti Releases</name>
<url>https://artifacts.alfresco.com/nexus/content/repositories/activiti-releases/</url>
<releases>
<enabled>true</enabled>
</releases>
</repository>
</repositories>
</project>
在Activiti中核心类的是ProcessEngine流程引擎,与Spring整合就是让Spring来管理ProcessEngine
通过org.activiti.spring.SpringProcessEngineConfiguration
与Spring整合方式来创建ProcessEngine对象。
2、创建Spring与Activiti的整合配置文件:activiti-spring.xml(名称不固定)。
<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:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<!-- 数据源 -->
<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/activiti"/>
<property name="username" value="root"/>
<property name="password" value="123456"/>
<property name="maxActive" value="3"/>
<property name="maxIdle" value="1"/>
</bean>
<!-- 工作流引擎配置bean -->
<bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource"/>
<!-- 使用spring事务管理器 -->
<property name="transactionManager" ref="transactionManager"/>
<!-- 数据库策略 -->
<property name="databaseSchemaUpdate" value="drop-create"/>
</bean>
<!-- 流程引擎 -->
<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
<property name="processEngineConfiguration" ref="processEngineConfiguration"/>
</bean>
<!-- 资源服务service -->
<bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService"/>
<!-- 流程运行service -->
<bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService"/>
<!-- 任务管理service -->
<bean id="taskService" factory-bean="processEngine" factory-method="getTaskService"/>
<!-- 历史管理service -->
<bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService"/>
<!-- 事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 传播行为 -->
<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="insert*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED"/>
<tx:method name="update*" propagation="REQUIRED"/>
<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
</tx:attributes>
</tx:advice>
<!-- 切面,根据具体项目修改切点配置
<aop:config proxy-target-class="true">
<aop:advisor advice-ref="txAdvice"
pointcut="execution(*com.itheima.service.impl..(..))"/>
</aop:config>-->
</beans>
其中databaseSchemaUpdate的取值内容:
-
flase:默认值。Activiti在启动时,会对比数据库表中保存的版本,如果没有表或者版本不匹配,将抛出异常。(生产环境常用)
-
true:Activiti会对数据库中所有表进行更新操作。如果表不存在,则自动创建。(开发时常用)
-
create_drop: 在Activiti启动时创建表,在关闭时删除表(必须手动关闭引擎,才能删除表)。(单元测试常用)
-
drop-create: 在Activiti启动时删除原来的旧表,然后在创建新表(不需要手动关闭引擎)。
测试
// 测试Activiti与Spring整合是否成功
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:activiti-spring.xml")
public class ActivitiTest {
@Autowired
private RepositoryService repositoryService;
@Test
public void test01(){
System.out.println("部署对象:"+repositoryService);
}
}
执行流程分析
Activiti与Spring整合加载的过程:
-
加载activiti-spring.xml配置文件
-
加载SpringProcessEngineConfiguration对象,这个对象它需要依赖注入dataSource对象和transactionManager对象。
-
加载ProcessEngineFactoryBean工厂来创建ProcessEngine对象,而ProcessEngineFactoryBean工厂又需要依赖注入processEngineConfiguration对象。
-
processEngine对象来负责创建我们的Service对象,从而简化Activiti的开发过程。
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