Activiti （一）集成SpringBoot2

两者为什么不能在一起

Activiti6 出来的时候，Springboot2 还没有出来，所以不能直接引用
或者说,从源码上就不支持。为什么不用Activiti7呢？是因为我用了7，发现很多BUG！spring boot2 activiti7 example

Activiti简介

Activiti是一个开源的工作流引擎，它实现了BPMN 2.0规范，可以发布设计好的流程定义，并通过api进行流程调度。

Activiti 流程引擎重点关注在系统开发的易用性和轻量性上。每一项 BPM 业务功能 Activiti 流程引擎都以服务的形式提供给开发人员。通过使用这些服务，开发人员能够构建出功能丰富、轻便且高效的 BPM 应用程序。

Activiti 表

运行后自动生成

pom.xml 文件

下面展示 项目依赖。

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <groupId>com.cgfy.activiti</groupId>
    <artifactId>cgfy-activiti6-example</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <name>cgfy-activiti6-example</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.62</version>
        </dependency>

        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>28.2-jre</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.16</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.21</version>
        </dependency>

        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring</artifactId>
            <version>6.0.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

ActivitiConfig

@Configuration
public class ActivitiConfig {
    @Autowired
    private DataSource dataSource;

    @Autowired
    private PlatformTransactionManager platformTransactionManager;

    /**
     * 初始化配置
     *
     * @return
     */
    @Bean
    public SpringProcessEngineConfiguration springProcessEngineConfiguration() {
        SpringProcessEngineConfiguration configuration = new SpringProcessEngineConfiguration();
        //自动部署已有的流程文件
//        try {
//            Resource[] resources = new PathMatchingResourcePatternResolver().getResources(ResourceLoader.CLASSPATH_URL_PREFIX + "processes/*.bpmn");
//            configuration.setDeploymentResources(resources);
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
        configuration.setTransactionManager(platformTransactionManager);
        configuration.setDataSource(dataSource);
        //true 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。
        configuration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);
        configuration.setDbIdentityUsed(false);
        return configuration;
    }

    @Bean
    public ProcessEngineFactoryBean processEngine() {
        ProcessEngineFactoryBean processEngineFactoryBean = new ProcessEngineFactoryBean();
        processEngineFactoryBean.setProcessEngineConfiguration(springProcessEngineConfiguration());
        return processEngineFactoryBean;
    }

    @Bean
    public RepositoryService repositoryService(ProcessEngine processEngine) {
        return processEngine.getRepositoryService();
    }

    @Bean
    public RuntimeService runtimeService(ProcessEngine processEngine) {
        return processEngine.getRuntimeService();
    }

    @Bean
    public TaskService taskService(ProcessEngine processEngine) {
        return processEngine.getTaskService();
    }

    @Bean
    public HistoryService historyService(ProcessEngine processEngine) {
        return processEngine.getHistoryService();
    }

}

Activiti提供的部分服务

RepositoryService帮助我们实现流程定义的部署。此服务会处理与流程定义相关的静态数据。

RuntimeService管理 ProcessInstances（当前正在运行的流程）以及流程变量。

TaskService会跟踪 UserTasks，需要由用户手动执行的任务是Activiti API的核心。我们可以使用此服务创建任务，声明并完成任务，分配任务的受让人等。

HistoryService会跟踪Activiti Engine的历史记录。我们还可以设置不同的历史级别。

ActivitiDesigner

activiti-designer-5.18.0.zip

eclipse：help >> Install New Software >> Add

actibpm.jar

idea：File >> Settings >> Plugines >> Install plugin from disk

Demo地址

spring boot2 + activiti6 Example