Activiti7 教程心得【1】

0 maven包

<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>4.0.0modelVersion>

    <groupId>com.itheimagroupId>
    <artifactId>activit01artifactId>
    <version>1.0-SNAPSHOTversion>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.pluginsgroupId>
                <artifactId>maven-compiler-pluginartifactId>
                <configuration>
                    <source>7source>
                    <target>7target>
                configuration>
            plugin>
        plugins>
    build>
    <properties>
        <slf4j.version>1.6.6slf4j.version>
        <log4j.version>1.2.12log4j.version>
        <activiti.version>7.0.0.Beta1activiti.version>
    properties>
    <dependencies>
        <dependency>
            <groupId>org.activitigroupId>
            <artifactId>activiti-engineartifactId>
            <version>${activiti.version}version>
        dependency>
        <dependency>
            <groupId>org.activitigroupId>
            <artifactId>activiti-springartifactId>
            <version>${activiti.version}version>
        dependency>
        
        <dependency>
            <groupId>org.activitigroupId>
            <artifactId>activiti-bpmn-modelartifactId>
            <version>${activiti.version}version>
        dependency>
        
        <dependency>
            <groupId>org.activitigroupId>
            <artifactId>activiti-bpmn-converterartifactId>
            <version>${activiti.version}version>
        dependency>
        
        <dependency>
            <groupId>org.activitigroupId>
            <artifactId>activiti-json-converterartifactId>
            <version>${activiti.version}version>
        dependency>
        
        <dependency>
            <groupId>org.activitigroupId>
            <artifactId>activiti-bpmn-layoutartifactId>
            <version>${activiti.version}version>
        dependency>
        
        <dependency>
            <groupId>org.activiti.cloudgroupId>
            <artifactId>activiti-cloud-services-apiartifactId>
            <version>${activiti.version}version>
        dependency>
        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>5.1.40version>
        dependency>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.4.5version>
        dependency>
        
        <dependency>
            <groupId>commons-dbcpgroupId>
            <artifactId>commons-dbcpartifactId>
            <version>1.4version>
        dependency>
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
        dependency>
        
        <dependency>
            <groupId>log4jgroupId>
            <artifactId>log4jartifactId>
            <version>${log4j.version}version>
        dependency>
        <dependency>
            <groupId>org.slf4jgroupId>
            <artifactId>slf4j-apiartifactId>
            <version>${slf4j.version}version>
        dependency>
        <dependency>
            <groupId>org.slf4jgroupId>
            <artifactId>slf4j-log4j12artifactId>
            <version>${slf4j.version}version>
        dependency>
        <dependency>
            <groupId>commons-iogroupId>
            <artifactId>commons-ioartifactId>
            <version>2.6version>
        dependency>
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <version>1.18.24version>
        dependency>
    dependencies>
project>
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1 idea 插件安装

2创建activiti.cfg.xml

<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">
    
    

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql:///activiti"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
        <property name="maxActive" value="3"/>
        <property name="maxIdle" value="1"/>
    bean>


    
    <bean id="processEngineConfiguration"
          class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
        
        <property name="dataSource" ref="dataSource"/>
        
        <property name="databaseSchemaUpdate" value="true"/>
    bean>
beans>
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3 创建数据库配置文件

# 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=%d{ISO8601} %-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=E:\activiti\activiti.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r[%15.15t] %-5p %30.30c %x - %m\n
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4 数据库 创建Activiti表格

5 使用代码创建25张表格

    /**
     * 生成 activiti的数据库表
     */
    @Test
    public void testCreateDbTable(){
        //使用classpath下的activiti.cfg.xml中的配置创建processEngine
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        System.out.println(processEngine);

    }
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6 使用idea 创建任务bmnp文件

bilibili更加清晰—Activiti创建bpmn任务

7 整体操作流程(简单的部署)

7.1 部署任务

@Test
    public void testDeployment(){
        //1.创建processEngine
        ProcessEngine defaultProcessEngine = ProcessEngines.getDefaultProcessEngine();
        //2.获取
        RepositoryService repositoryService = defaultProcessEngine.getRepositoryService();
        Deployment deploy = repositoryService.createDeployment()
                .name("出差申请流程")
                .addClasspathResource("bpmn/text.bpmn")
                .addClasspathResource("bpmn/text.png")
                .deploy();
        //输出信息
        System.out.println("流程部署id："+deploy.getId());
        System.out.println("流程部署名字："+deploy.getName());

    }
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数据里面的表格

7.2 启动

关于id

@Test
    public void testStart(){
        ProcessEngine defaultProcessEngine = ProcessEngines.getDefaultProcessEngine();
        RuntimeService runtimeService = defaultProcessEngine.getRuntimeService();
        //taskid 看上图        
        ProcessInstance instance = runtimeService.startProcessInstanceByKey("taskid");
        System.out.println("流程定义ID："+instance.getProcessDefinitionId());
        System.out.println("流程实例ID："+instance.getId());
        System.out.println("当前活动ID："+instance.getActivityId());

    }
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执行完毕之后 数据库里面

7.3 查询个人待执行任务

/**
     * 查询当前个人待执行的任务
     */
    @Test
    public void testFindPersonalTaskList() {
//        任务负责人
        String assignee = "李四";
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
//        创建TaskService
        TaskService taskService = processEngine.getTaskService();
//        根据流程key 和 任务负责人 查询任务
        List<Task> list = taskService.createTaskQuery()
                .processDefinitionKey("taskid") //流程Key
                .taskAssignee(assignee)//只查询该任务负责人的任务
                .list();

        for (Task task : list) {
            System.out.println("流程实例id：" + task.getProcessInstanceId());
            System.out.println("任务id：" + task.getId());
            System.out.println("任务负责人：" + task.getAssignee());
            System.out.println("任务名称：" + task.getName());

        }
    }
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控制台输出

流程实例id：140001
任务id：140005
任务负责人：李四
任务名称：创建任务
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7.4 完成个人任务(创建任务:李四)

 	@Test
    public void completTask(){
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        TaskService taskService = processEngine.getTaskService();

        Task task = taskService.createTaskQuery()
                .processDefinitionKey("taskid")
                .taskAssignee("李四")
                .singleResult();
        taskService.complete(task.getId());

    }
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数据库里面

7.5 完成个人任务（审核任务:总经理）

    @Test
    public void completTask(){
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        TaskService taskService = processEngine.getTaskService();

        Task task = taskService.createTaskQuery()
                .processDefinitionKey("taskid")
                .taskAssignee("总经理")
                .singleResult();
        taskService.complete(task.getId());

    }
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数据库 act_ru_task 已经没有任务了

7.6 查询流程

/**
     * 查询流程定义
     */
    @Test
    public void queryPrecessDefinition(){
        //获取引擎
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        //获取 repositoryService
        RepositoryService repositoryService = processEngine.getRepositoryService();
        //获取 processDefinitionQuery 对象
        ProcessDefinitionQuery processDefinitionQuery = repositoryService.createProcessDefinitionQuery();
        //查询当前所有的流程定义 返回流程定义信息的集合
        //processDefinitionKey(流程定义key)
        //orderByProcessDefinitionVersion 根据版本排序
        //desc 倒序
        //list 查询出所有的内容
        //查询的是 act_re_procdef表
        List<ProcessDefinition> processDefinitionList = processDefinitionQuery.processDefinitionKey("taskid")
                .orderByProcessDefinitionVersion()
                .desc()
                .list();

        //输出信息
        for (ProcessDefinition processDefinition : processDefinitionList) {
            System.out.println("流程定义ID："+processDefinition.getId());
            System.out.println("流程定义名称："+processDefinition.getName());
            System.out.println("流程定义key："+processDefinition.getKey());
            System.out.println("流程定义版本："+processDefinition.getVersion());
            System.out.println("流程部署ID："+processDefinition.getDeploymentId());
        }

    }
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7.7 删除流程(根据部署id)

/**
     * 删除流程部署信息
     * 当前的流程如果没有完成，想要删除的话需要使用特殊方式，原理就是 级联删除
     */
    @Test
    public void deleteDeployMent(){
        /**
         * 被操作的表
         * act_re_deployment
         * act_re_procdef
         * act_ge_bytearray
         */
        //获取流程引擎
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        //通过引擎来获取 repositoryService
        RepositoryService repositoryService = processEngine.getRepositoryService();
        //通过部署ID来删除流程部署信息
        String deploymentId = "137501";
        repositoryService.deleteDeployment(deploymentId);
        //下行为强制删除
        //repositoryService.deleteDeployment(deploymentId,true);
    }
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7.8 从数据库下载bpmn与png

/**
     * 下载资源文件
     * 方案1：使用activiti提供的api，来下载资源文件
     * 方案2：使用自己的方式 从数据库中下载文件 使用jdbc对blob 类型，clob类型读取出来，保存到文件目录
     * 结果IO操作：commons-io.jar
     */
    @Test
    public void getDeployment() throws FileNotFoundException {
        ProcessEngine defaultProcessEngine = ProcessEngines.getDefaultProcessEngine();
        RepositoryService repositoryService = defaultProcessEngine.getRepositoryService();
        ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
                .processDefinitionKey("taskid")
                .singleResult();
        String deploymentId = processDefinition.getDeploymentId();
        InputStream resourceAsStreamPng = repositoryService.getResourceAsStream(deploymentId, processDefinition.getDiagramResourceName());
        InputStream resourceAsStreamBpmn = repositoryService.getResourceAsStream(deploymentId, processDefinition.getResourceName());
        File pngFile = new File("E:/activiti/taskid.png");
        File bpmnFile = new File("E:/activiti/taskid.bpmn");
        try {
            FileOutputStream fileOutputStreamPng = new FileOutputStream(pngFile);
            FileOutputStream fileOutputStreamBpmn = new FileOutputStream(bpmnFile);
            IOUtils.copy(resourceAsStreamPng,fileOutputStreamPng);
            IOUtils.copy(resourceAsStreamBpmn,fileOutputStreamBpmn);
            fileOutputStreamPng.close();
            resourceAsStreamPng.close();
            fileOutputStreamBpmn.close();
            resourceAsStreamBpmn.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
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下载后的效果演示

8 整体操作流程(变量的方式)

8.1 创建bmnp文件

**视频中有一处错误请注意 **

bilibili更加清晰—Activiti创建有分支的bpmn【视频中 v0 应该修改成${v0}】

8.2 部署

	//注意次key 下面都会用到 与 8.1创建bmnp的key是相关的
        String key = "evectionVariablesTest";
    @Test
    public void testDeployment(){
        //1.创建processEngine
        ProcessEngine defaultProcessEngine = ProcessEngines.getDefaultProcessEngine();
        //2.获取
        RepositoryService repositoryService = defaultProcessEngine.getRepositoryService();
        Deployment deploy = repositoryService.createDeployment()
                .name("出差申请流程-有分支的")
                .addClasspathResource("bpmn/evection-variables-test.bpmn")
                .addClasspathResource("bpmn/evection-variables-test.png")
                .deploy();
        //输出信息
        System.out.println("流程部署id："+deploy.getId());
        System.out.println("流程部署名字："+deploy.getName());
        /**
         * 流程部署id：160001
         * 流程部署名字：出差申请流程-有分支的
         */
    }
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数据库

8.3 创建类（Evection ） 注意类的名字与 bmnp里面的相关

package com.itheima.demo.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;
import java.util.Date;

/**
 * 出差申请中的流程变量对象
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Evection implements Serializable {
    /**
     * 主键ID
     */
    private Long id;
    /**
     * 出差单的名字
     */
    private String evectionName;
    /**
     * 出差天数
     */
    private double num;
    /**
     * 出差的开始时间
     */
    private Date beginDate;
    /**
     * 出差的结束时间
     */
    private Date endDate;
    /**
     * 出差的目的地
     */
    private String destination;
    /**
     * 出差的原因
     */
    private String reson;

}

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8.3 启动

@Test
    public void testStart(){
        //获取流程引擎
        ProcessEngine defaultProcessEngine = ProcessEngines.getDefaultProcessEngine();
        //获取runtimeService
        RuntimeService runtimeService = defaultProcessEngine.getRuntimeService();
        //流程变量的map
        Map<String,Object> variables = new HashMap<>();
        //设置流程变量
        Evection evection = new Evection();
        //设置出差日期
        evection.setNum(3d);
        //把流程变量的pojo放入map
        variables.put("evection",evection);
        //把设定任务的负责人
        variables.put("v0","v0创建者李四");
        variables.put("v1","v1审核者王经理");
        variables.put("v2","v2审核者万总经理");
        variables.put("v3","v3审核者小小财务");

        ProcessInstance instance = runtimeService.startProcessInstanceByKey(key,variables);
        System.out.println("流程定义ID："+instance.getProcessDefinitionId());
        System.out.println("流程实例ID："+instance.getId());
        System.out.println("当前活动ID："+instance.getActivityId());
        /**
         * 流程定义ID：evectionVariablesTest:1:160004
         * 流程实例ID：162501
         * 当前活动ID：null
         */
    }
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数据库

表act_ru_task

表act_ru_variable

8.4 查询个人待执行任务

/**
     * 查询当前个人待执行的任务
     */
    @Test
    public void testFindPersonalTaskList() {
//        任务负责人
        String assignee = "v0创建者李四";
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
//        创建TaskService
        TaskService taskService = processEngine.getTaskService();
//        根据流程key 和 任务负责人 查询任务
        List<Task> list = taskService.createTaskQuery()
                .processDefinitionKey(key) //流程Key
                .taskAssignee(assignee)//只查询该任务负责人的任务
                .list();

        for (Task task : list) {
            System.out.println("流程实例id：" + task.getProcessInstanceId());
            System.out.println("任务id：" + task.getId());
            System.out.println("任务负责人：" + task.getAssignee());
            System.out.println("任务名称：" + task.getName());

        }
         /**
         * 流程实例id：162501
         * 任务id：162512
         * 任务负责人：v0创建者李四
         * 任务名称：创建任务
         */
    }
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8.5 完成个人任务

v0创建者李四

/**
     * 完成个人任务
     */
    @Test
    public void completTaskV0(){
        String assingee = "v0创建者李四";
        //获取流程引擎
        ProcessEngine defaultProcessEngine = ProcessEngines.getDefaultProcessEngine();
        //taskService
        TaskService taskService = defaultProcessEngine.getTaskService();
        //完成任务
        Task task = taskService.createTaskQuery()
                .processDefinitionKey(key)
                .taskAssignee(assingee)
                .singleResult();
        if(task!=null){
            //完成任务 根据id来完成
            taskService.complete(task.getId());
            System.out.println(task);
        }
    }
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v1审核者王经理

/**
     * 完成个人任务
     */
    @Test
    public void completTaskV1(){
        String assingee = "v1审核者王经理";
        //获取流程引擎
        ProcessEngine defaultProcessEngine = ProcessEngines.getDefaultProcessEngine();
        //taskService
        TaskService taskService = defaultProcessEngine.getTaskService();
        //完成任务
        Task task = taskService.createTaskQuery()
                .processDefinitionKey(key)
                .taskAssignee(assingee)
                .singleResult();
        if(task!=null){
            //完成任务 根据id来完成
            taskService.complete(task.getId());
            System.out.println(task);
        }
    }
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1. 当v1审核者王经理 完成任务时 有一个 分支 需要根据 num来判断
2. 本列中 num=3 是启动的时候 赋值的 [evection.setNum(3d)摘自启动里面的代码]
3. 所以 num>=3 应该执行 总经理审批
4. 查看一下数据库里面的 act_ru_task 看一下待执行人
5. 

v2审核者万总经理

  /**
     * 完成个人任务
     */
    @Test
    public void completTaskV2(){
        String assingee = "v2审核者万总经理";
        //获取流程引擎
        ProcessEngine defaultProcessEngine = ProcessEngines.getDefaultProcessEngine();
        //taskService
        TaskService taskService = defaultProcessEngine.getTaskService();
        //完成任务
        Task task = taskService.createTaskQuery()
                .processDefinitionKey(key)
                .taskAssignee(assingee)
                .singleResult();
        if(task!=null){
            //完成任务 根据id来完成
            taskService.complete(task.getId());
            System.out.println(task);
        }
    }
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此时已经走到了小小财务

v3审核者小小财务 【最终完成act_ru_task里面的数据删除 】

/**
     * 完成个人任务
     */
    @Test
    public void completTaskV3(){
        String assingee = "v3审核者小小财务";
        //获取流程引擎
        ProcessEngine defaultProcessEngine = ProcessEngines.getDefaultProcessEngine();
        //taskService
        TaskService taskService = defaultProcessEngine.getTaskService();
        //完成任务
        Task task = taskService.createTaskQuery()
                .processDefinitionKey(key)
                .taskAssignee(assingee)
                .singleResult();
        if(task!=null){
            //完成任务 根据id来完成
            taskService.complete(task.getId());
            System.out.println(task);
        }
    }
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