activiti7学习

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文章目录

一.activiti

1.什么是activiti7

业务流程管理项目(BPM)

activiti,是一个工作流引擎,可以将业务系统中复杂的业务流程抽取出来,使用专门的建模语言BPMN2.0进行定义,业务流程按照预先定义的流程进行执行,实现了系统的流程由activiti进行管理,减少业务系统由于流程变更进行系统升级改造的工作量,从而提高系统健壮性。

2.activiti7所需要的安装环境

(1)所需jar包

1、activiti-engine-7.0.0.beta1.jar

2、activiti 依赖的 jar 包: mybatis、 alf4j、 log4j 等

3、activiti 依赖的 spring 包

4、mysql数据库驱动(数据库驱动可以更具自己所需而变动,详细参照activiti支持的数据库)

5、第三方数据连接池 dbcp

6、单元测试 Junit-4.12.jar(为了测试使用activiti)

(2)pom.xml

<properties>
    <slf4j.version>1.6.6</slf4j.version>
    <log4j.version>1.2.12</log4j.version>
    <activiti.version>7.0.0.Beta1</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>
    <!-- bpmn 模型处理 -->
    <dependency>
        <groupId>org.activiti</groupId>
        <artifactId>activiti-bpmn-model</artifactId>
        <version>$activiti.version</version>
    </dependency>
    <!-- bpmn 转换 -->
    <dependency>
        <groupId>org.activiti</groupId>
        <artifactId>activiti-bpmn-converter</artifactId>
        <version>$activiti.version</version>
    </dependency>
    <!-- bpmn json数据转换 -->
    <dependency>
        <groupId>org.activiti</groupId>
        <artifactId>activiti-json-converter</artifactId>
        <version>$activiti.version</version>
    </dependency>
    <!-- bpmn 布局 -->
    <dependency>
        <groupId>org.activiti</groupId>
        <artifactId>activiti-bpmn-layout</artifactId>
        <version>$activiti.version</version>
    </dependency>
    <!-- activiti 云支持 -->
    <dependency>
        <groupId>org.activiti.cloud</groupId>
        <artifactId>activiti-cloud-services-api</artifactId>
        <version>$activiti.version</version>
    </dependency>
    <!-- mysql驱动 -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.40</version>
    </dependency>
    <!-- mybatis -->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.4.5</version>
    </dependency>
    <!-- 链接池 -->
    <dependency>
        <groupId>commons-dbcp</groupId>
        <artifactId>commons-dbcp</artifactId>
        <version>1.4</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
    </dependency>
    <!-- log start -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>$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>
</dependencies>

(3)在resources文件夹下创建日志配置文件以及activiti所需配置文件activiti.cfg.xml

<?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:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
						http://www.springframework.org/schema/contex http://www.springframework.org/schema/context/spring-context.xsd
						http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!--dbcp连接池-->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/activiti?serverTimezone=GMT&amp;nullCatalogMeansCurrent=true"/>
        <property name="username" value="root"/>
        <property name="password" value="19980420"/>
        <property name="maxActive" value="3"/>
        <property name="maxIdle" value="1"/>
     </bean>

    <!--在默认方式下,bean的id固定为processEngineConfiguration-->
    <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
<!--配置数据库连接池-->
        <property name="dataSource" ref="dataSource"/>
        <!--        配置数据库相关内容-->
<!--        <property name="jdbcDriver" value="com.mysql.cj.jdbc.Driver"/>-->
<!--        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/activiti?serverTimezone=GMT&amp;nullCatalogMeansCurrent=true"/>-->
<!--        <property name="jdbcUsername" value="root"/>-->
<!--        <property name="jdbcPassword" value="19980420"/>-->
<!--        activiti在创建数据库时的策略,为true时,若存在相应的表,则使用,若不存在则创建-->
        <property name="databaseSchemaUpdate" value="true"/>
    </bean>
</beans>

日志配置文件

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE debug info warn error fatal
log4j.rootCategory=debug, CONSOLE, LOGFILE
# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE
# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%dISO8601 %-6r[%15.15t] %-5p %30.30c %x - %m\\n
# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=f:\\act\\activiti.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%dISO8601 %-6r[%15.15t] %-5p %30.30c %x - %m\\n

3.Activiti数据库表的自动创建

第一次运行这个代码时自动创建

public class TestCreate 
//    使用activiti提供的默认方法来创建数据库
    @Test
    public void testCreateDbTable()
//需要使用activiti的工具类ProcessEngines,使用方法getDefaultProcessEngine,
//getDefaultProcessEngine会默认读取从resources下的activiti.cfg.xml文件中
//        在创建processEngine时,就会创建数据库的表
        ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
        System.out.println(engine);
    
    @Test
    public void test1() 
        //使用下面这种方式生成表的条件
        //1.activiti配置文件名称必须为activiti.cfg.xml
        //2.activiti.cfg.xml中bean的id必须为"processEngineConfiguration"
        ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
        System.out.println(engine );
    
    @Test
    public void test2() 
        //1.创建ProcessEngineConfiguration对象
        ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml");
        //2.创建ProcessEngine对象
        ProcessEngine processEngine = configuration.buildProcessEngine();
        System.out.println(processEngine);
    

4.Activiti各表的意义

表分类表名解释
一般数据
[ACT_GE_BYTEARRAY]通用的流程定义和流程资源,例如bpmn对应的xml文件以及png文件
[ACT_GE_PROPERTY]系统相关属性
流程历史记录
[ACT_HI_ACTINST]历史的流程实例
[ACT_HI_ATTACHMENT]历史的流程附件
[ACT_HI_COMMENT]历史的说明性信息
[ACT_HI_DETAIL]历史的流程运行中的细节信息
[ACT_HI_IDENTITYLINK]历史的流程运行过程中用户关系
[ACT_HI_PROCINST]历史的流程实例
[ACT_HI_TASKINST]历史的任务实例
[ACT_HI_VARINST]历史的流程运行中的变量信息
流程定义表
[ACT_RE_DEPLOYMENT]部署单元信息,流程部署表,每部署一次都会新增一条记录
[ACT_RE_MODEL]模型信息
[ACT_RE_PROCDEF]已部署的流程定义,流程定义表,
运行实例表
[ACT_RU_EVENT_SUBSCR]运行时事件
[ACT_RU_EXECUTION]运行时流程执行实例
[ACT_RU_IDENTITYLINK]运行时用户关系信息,存储任务节点与参与者的相关信息
[ACT_RU_JOB]运行时作业
[ACT_RU_TASK]运行时任务
[ACT_RU_VARIABLE]运行时变量表

5.创建流程引擎

(1)默认方法

//1.activiti配置文件名称必须为activiti.cfg.xml
//2.activiti.cfg.xml中bean的id必须为"processEngineConfiguration"
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
System.out.println(engine );

(2)自定义方法
配置文件名称可以自定义,bean的名称也可以自定义

 //1.创建ProcessEngineConfiguration对象
ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml",processEngineConfiguration);
//2.创建ProcessEngine对象
ProcessEngine processEngine = configuration.buildProcessEngine();
System.out.println(processEngine);

6.service服务接口

(1)service创建方式

HistoryService historyService = processEngine.getHistoryService();
ManagementService managementService = processEngine.getManagementService();
RepositoryService repositoryService = processEngine.getRepositoryService();

(2)service总览

service名称service作用
RepositoryServiceactiviti资源管理类
HistoryServiceactiviti历史管理类
RunTimeServiceactiviti流程运行管理类
TaskServiceactiviti任务管理类
ManageServiceactiviti引擎管理类

7.流程定义

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:xsd="http://www.w3.org/2001/XMLSchema" 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/processdef">
    <process id="evection_1" name="evection" isExecutable="true">
        <startEvent id="_2" name="StartEvent"/>
        <userTask activiti:assignee="zhangsan" activiti:exclusive="true" id="_3" name="创建出差申请"/>
        <userTask activiti:assignee="jerry" activiti:exclusive="true" id="_4" name="经理审批"/>
        <userTask activiti:assignee="jack" activiti:exclusive="true" id="_5" name="总经理审批"/>
        <userTask activiti:assignee="rose" activiti:exclusive="true" id="_6" name="财务审批"/>
        <endEvent id="_7" name="EndEvent"/>
        <sequenceFlow id="_8" sourceRef="_2" targetRef="_3"/>
        <sequenceFlow id="_9" sourceRef="_3" targetRef="_4"/>
        <sequenceFlow id="_10" sourceRef="_4" targetRef="_5"/>
        <sequenceFlow id="_11" sourceRef="_5" targetRef="_6"/>
        <sequenceFlow id="_12" sourceRef="_6" targetRef="_7"/>

    </process>
    <bpmndi:BPMNDiagram id="BPMNDiagram_evection">
        <bpmndi:BPMNPlane bpmnElement="evection_1" id="BPMNPlane_evection">
        </bpmndi:BPMNPlane>
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