创建Activiti项目

1.创建项目

2.导入Activiti的jar包

项目上右击创建lib文件夹

将jar包复制进lib文件夹

3.导入数据库连接jar包

4.使用代码创建Activiti用来存放流程数据的23张表

package junit;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.junit.Test;

public class TestActiviti {
    /**
     * 使用代码创建工作流需要的23张表
     */
    @Test
    public void createTable(){
        ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
        //连接数据库配置
        processEngineConfiguration.setJdbcDriver("com.mysql.jdbc.Driver");
        processEngineConfiguration.setJdbcUrl("jdbc:mysql://localhost:3306/activiti?useUnicode=true&characterEncoding=utf8");
        processEngineConfiguration.setJdbcUsername("root");
        processEngineConfiguration.setJdbcPassword("******");

        /**
          public static final String DB_SCHEMA_UPDATE_FALSE = "false";//不能自动创建表，需要表存在
          public static final String DB_SCHEMA_UPDATE_CREATE_DROP = "create-drop";//先删除表再创建表
          public static final String DB_SCHEMA_UPDATE_TRUE = "true";//如果表不存在，自动创建表
          */
        processEngineConfiguration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);
        //工作流的核心对象，ProcessEngine对象
        ProcessEngine processEngine = processEngineConfiguration.buildProcessEngine();
        System.out.println("processEngine:"+ processEngine);
    }
}

5.优化使用配置文件来创建工作流需要的23张表

activiti.cfg.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <!--
    ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
        //连接数据库配置
        processEngineConfiguration.setJdbcDriver("com.mysql.jdbc.Driver");
        processEngineConfiguration.setJdbcUrl("jdbc:mysql://localhost:3306/activiti?useUnicode=true&characterEncoding=utf8");
        processEngineConfiguration.setJdbcUsername("root");
        processEngineConfiguration.setJdbcPassword("******");

        /**
          public static final String DB_SCHEMA_UPDATE_FALSE = "false";//不能自动创建表，需要表存在
          public static final String DB_SCHEMA_UPDATE_CREATE_DROP = "create-drop";//先删除表再创建表
          public static final String DB_SCHEMA_UPDATE_TRUE = "true";//如果表不存在，自动创建表
          */
        processEngineConfiguration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);
     -->

    <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
        <property name="jdbcDriver" value="com.mysql.jdbc.Driver"></property>
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/activiti?useUnicode=true&amp;characterEncoding=utf8"></property>
        <property name="jdbcUsername" value="root"></property>
        <property name="jdbcPassword" value="******"></property>
        <!-- 没有表创建表 -->
        <property name="databaseSchemaUpdate" value="true"></property>
    </bean>

</beans>

log4j.properties

log4j.rootLogger=INFO, CA

# ConsoleAppender
log4j.appender.CA=org.apache.log4j.ConsoleAppender
log4j.appender.CA.layout=org.apache.log4j.PatternLayout
log4j.appender.CA.layout.ConversionPattern= %d{hh:mm:ss,SSS} [%t] %-5p %c %x - %m%n

TestActiviti.java

package junit;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.junit.Test;

public class TestActiviti {
    /**
     * 使用代码创建工作流需要的23张表
     */
    @Test
    public void createTable(){
        ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
        //连接数据库配置
        processEngineConfiguration.setJdbcDriver("com.mysql.jdbc.Driver");
        processEngineConfiguration.setJdbcUrl("jdbc:mysql://localhost:3306/activiti?useUnicode=true&characterEncoding=utf8");
        processEngineConfiguration.setJdbcUsername("root");
        processEngineConfiguration.setJdbcPassword("******");

        /**
          public static final String DB_SCHEMA_UPDATE_FALSE = "false";//不能自动创建表，需要表存在
          public static final String DB_SCHEMA_UPDATE_CREATE_DROP = "create-drop";//先删除表再创建表
          public static final String DB_SCHEMA_UPDATE_TRUE = "true";//如果表不存在，自动创建表
          */
        processEngineConfiguration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);
        //工作流的核心对象，ProcessEngine对象
        ProcessEngine processEngine = processEngineConfiguration.buildProcessEngine();
        System.out.println("processEngine:"+ processEngine);
    }

    /*
     * 使用配置文件来创建工作流需要的23张表
     */
    @Test
    public void createTable2(){
//        ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml");
//        //工作流的核心对象，ProcessEngine对象
//        ProcessEngine processEngine = processEngineConfiguration.buildProcessEngine();

        ProcessEngine processEngine = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml").buildProcessEngine();
        System.out.println("processEngine:"+ processEngine);
    }
}

6.创建流程图

<?xml version="1.0" encoding="UTF-8"?>
<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/test">
  <process id="HelloWorld" name="HelloWorldProcess" isExecutable="true">
    <startEvent id="startevent1" name="Start"></startEvent>
    <endEvent id="endevent1" name="End"></endEvent>
    <userTask id="usertask1" name="提交申请" activiti:assignee="张三"></userTask>
    <userTask id="usertask2" name="审批【部门经理】" activiti:assignee="李四"></userTask>
    <userTask id="usertask3" name="审批【总经理】" activiti:assignee="王五"></userTask>
    <sequenceFlow id="flow2" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
    <sequenceFlow id="flow3" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
    <sequenceFlow id="flow4" sourceRef="usertask2" targetRef="usertask3"></sequenceFlow>
    <sequenceFlow id="flow5" sourceRef="usertask3" targetRef="endevent1"></sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_HelloWorld">
    <bpmndi:BPMNPlane bpmnElement="HelloWorld" id="BPMNPlane_HelloWorld">
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="41.0" x="20.0" y="240.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="570.0" y="240.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
        <omgdc:Bounds height="55.0" width="105.0" x="90.0" y="230.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
        <omgdc:Bounds height="55.0" width="101.0" x="240.0" y="230.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask3" id="BPMNShape_usertask3">
        <omgdc:Bounds height="55.0" width="111.0" x="400.0" y="230.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="61.0" y="257.0"></omgdi:waypoint>
        <omgdi:waypoint x="90.0" y="257.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="195.0" y="257.0"></omgdi:waypoint>
        <omgdi:waypoint x="240.0" y="257.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
        <omgdi:waypoint x="341.0" y="257.0"></omgdi:waypoint>
        <omgdi:waypoint x="400.0" y="257.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">
        <omgdi:waypoint x="511.0" y="257.0"></omgdi:waypoint>
        <omgdi:waypoint x="570.0" y="257.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

7.部署流程定义

HelloWorld.java

package com.mycom.helloWorld;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.repository.Deployment;
import org.junit.Test;

public class HelloWorld {

    ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

    /*
     *部署流程定义
     */
    @Test
    public void deploymentProcessDefinition(){
        Deployment deployment = processEngine.getRepositoryService()//与流程定义和部署对象相关的Service
                        .createDeployment()//创建一个部署对象
                        .name("HelloWorld入门")//添加部署名称
                        .addClasspathResource("diagrams/HelloWorld.bpmn")//从classpath的资源中加载，一次只能加载一个文件
                        .addClasspathResource("diagrams/HelloWorld.png")
                        .deploy();//完成部署
        System.out.println(deployment.getId());
        System.out.println(deployment.getName());

    }
}

8.启动流程实例

package com.mycom.helloWorld;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.junit.Test;

public class HelloWorld {

    ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

    /*
     *部署流程定义
     */
    @Test
    public void deploymentProcessDefinition(){
        Deployment deployment = processEngine.getRepositoryService()//与流程定义和部署对象相关的Service
                        .createDeployment()//创建一个部署对象
                        .name("HelloWorld入门")//添加部署名称
                        .addClasspathResource("diagrams/HelloWorld.bpmn")//从classpath的资源中加载，一次只能加载一个文件
                        .addClasspathResource("diagrams/HelloWorld.png")
                        .deploy();//完成部署
        System.out.println("部署ID："+deployment.getId());
        System.out.println("部署名称:"+deployment.getName());

    }

    /*
     * 启动流程实例
     */
    @Test
    public void startProcessInstance(){
        //流程定义的key
        String processDefinitionKey = "HelloWorld";
        ProcessInstance processInstance = processEngine.getRuntimeService()//与正在执行的流程实例和执行对象相关的Service
                        .startProcessInstanceByKey(processDefinitionKey);//使用流程定义的key启动流程实例，key对应HelloWorld.bpmn文件中的ID的属性值,使用key值启动，默认是按照最新版本的流程定义启动

        System.out.println("流程实例ID:"+processInstance.getId());//流程实例ID
        System.out.println("流程定义ID:"+processInstance.getProcessDefinitionId());//流程定义ID

    }
}

9. 查询当前人的个人任务

package com.mycom.helloWorld;

import java.util.List;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Test;

public class HelloWorld {

    ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

    /*
     *部署流程定义
     */
    @Test
    public void deploymentProcessDefinition(){
        Deployment deployment = processEngine.getRepositoryService()//与流程定义和部署对象相关的Service
                        .createDeployment()//创建一个部署对象
                        .name("HelloWorld入门")//添加部署名称
                        .addClasspathResource("diagrams/HelloWorld.bpmn")//从classpath的资源中加载，一次只能加载一个文件
                        .addClasspathResource("diagrams/HelloWorld.png")
                        .deploy();//完成部署
        System.out.println("部署ID："+deployment.getId());
        System.out.println("部署名称:"+deployment.getName());

    }

    /*
     * 启动流程实例
     */
    @Test
    public void startProcessInstance(){
        //流程定义的key
        String processDefinitionKey = "HelloWorld";
        ProcessInstance processInstance = processEngine.getRuntimeService()//与正在执行的流程实例和执行对象相关的Service
                        .startProcessInstanceByKey(processDefinitionKey);//使用流程定义的key启动流程实例，key对应HelloWorld.bpmn文件中的ID的属性值,使用key值启动，默认是按照最新版本的流程定义启动

        System.out.println("流程实例ID:"+processInstance.getId());//流程实例ID
        System.out.println("流程定义ID:"+processInstance.getProcessDefinitionId());//流程定义ID

    }

    /*
     * 查询当前人的个人任务
     */
    @Test
    public void findMyPersonalTask(){
        String assignee = "张三";
        List<Task> list = processEngine.getTaskService()//与正在执行任务相关的Service
                        .createTaskQuery()//创建任务查询对象
                        .taskAssignee(assignee)//指定个人任务查询，指定办理人
                        .list();

        if(list!=null && list.size()>0){
            for(Task task:list){
                System.out.println("任务ID："+task.getId());
                System.out.println("任务名称："+task.getName());
                System.out.println("任务创建时间："+task.getCreateTime());
                System.out.println("任务办理人："+task.getAssignee());
                System.out.println("流程实例ID："+task.getProcessInstanceId());
                System.out.println("执行对象ID："+task.getExecutionId());
                System.out.println("流程定义ID："+task.getProcessDefinitionId());
            }
        }
    }
}

10.完成我的任务

package com.mycom.helloWorld;

import java.util.List;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Test;

public class HelloWorld {

    ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

    /*
     *部署流程定义
     */
    @Test
    public void deploymentProcessDefinition(){
        Deployment deployment = processEngine.getRepositoryService()//与流程定义和部署对象相关的Service
                        .createDeployment()//创建一个部署对象
                        .name("HelloWorld入门")//添加部署名称
                        .addClasspathResource("diagrams/HelloWorld.bpmn")//从classpath的资源中加载，一次只能加载一个文件
                        .addClasspathResource("diagrams/HelloWorld.png")
                        .deploy();//完成部署
        System.out.println("部署ID："+deployment.getId());
        System.out.println("部署名称:"+deployment.getName());

    }

    /*
     * 启动流程实例
     */
    @Test
    public void startProcessInstance(){
        //流程定义的key
        String processDefinitionKey = "HelloWorld";
        ProcessInstance processInstance = processEngine.getRuntimeService()//与正在执行的流程实例和执行对象相关的Service
                        .startProcessInstanceByKey(processDefinitionKey);//使用流程定义的key启动流程实例，key对应HelloWorld.bpmn文件中的ID的属性值,使用key值启动，默认是按照最新版本的流程定义启动

        System.out.println("流程实例ID:"+processInstance.getId());//流程实例ID
        System.out.println("流程定义ID:"+processInstance.getProcessDefinitionId());//流程定义ID

    }

    /*
     * 查询当前人的个人任务
     */
    @Test
    public void findMyPersonalTask(){
        String assignee = "张三";
        List<Task> list = processEngine.getTaskService()//与正在执行任务相关的Service
                        .createTaskQuery()//创建任务查询对象
                        .taskAssignee(assignee)//指定个人任务查询，指定办理人
                        .list();

        if(list!=null && list.size()>0){
            for(Task task:list){
                System.out.println("任务ID："+task.getId());
                System.out.println("任务名称："+task.getName());
                System.out.println("任务创建时间："+task.getCreateTime());
                System.out.println("任务办理人："+task.getAssignee());
                System.out.println("流程实例ID："+task.getProcessInstanceId());
                System.out.println("执行对象ID："+task.getExecutionId());
                System.out.println("流程定义ID："+task.getProcessDefinitionId());
            }
        }
    }

    /*
     * 完成我的任务
     */
    @Test
    public void completeMyPersonalTask(){
        //任务Id
        String taskId = "104";
        processEngine.getTaskService()//与正在执行任务相关的Service
                        .complete(taskId);
        System.out.println("完成任务：任务Id："+taskId);

    }

}