Activiti 整合 Spring

创建 maven 项目，导入依赖

<properties>
    <maven.compiler.source>8</maven.compiler.source>
    <maven.compiler.target>8</maven.compiler.target>
    <slf4j.version>1.6.6</slf4j.version>
    <log4j.version>1.2.12</log4j.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.activiti</groupId>
        <artifactId>activiti-engine</artifactId>
        <version>7.0.0.Beta1</version>
    </dependency>
    <dependency>
        <groupId>org.activiti</groupId>
        <artifactId>activiti-spring</artifactId>
        <version>7.0.0.Beta1</version>
    </dependency>
    <dependency>
        <groupId>org.activiti</groupId>
        <artifactId>activiti-bpmn-model</artifactId>
        <version>7.0.0.Beta1</version>
    </dependency>
    <dependency>
        <groupId>org.activiti</groupId>
        <artifactId>activiti-bpmn-converter</artifactId>
        <version>7.0.0.Beta1</version>
    </dependency>
    <dependency>
        <groupId>org.activiti</groupId>
        <artifactId>activiti-json-converter</artifactId>
        <version>7.0.0.Beta1</version>
    </dependency>
    <dependency>
        <groupId>org.activiti</groupId>
        <artifactId>activiti-bpmn-layout</artifactId>
        <version>7.0.0.Beta1</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>5.0.7.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>

创建配置文件 activiti-spring.xml（名称可以自定义），内容如下：

<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="654321"/>
        <property name="maxActive" value="3"/>
        <property name="maxIdle" value="1"/>
    </bean>

    <!-- 工作流引擎 -->
    <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
        <!-- 引用数据源 -->
        <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>

databaseSchemaUpdate 的取值：

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）

测试整合

import org.activiti.engine.RepositoryService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import javax.annotation.Resource;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:activiti-spring.xml")
public class activitiTest {
    @Resource
    private RepositoryService repositoryService;

    @Test
    public void test01(){
        System.out.println("部署对象:"+repositoryService);
    }
}

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

posted @ 2020-11-03 20:16 Y-wee 阅读(279) 评论(0) 收藏举报

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