<dependencies>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>3.8.1</version>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context</artifactId>

            <version>4.2.1.RELEASE</version>

        </dependency>

        <dependency>

            <groupId>org.activiti</groupId>

            <artifactId>activiti-engine</artifactId>

            <version>5.18.0</version>

        </dependency>

        <dependency>

            <groupId>com.h2database</groupId>

            <artifactId>h2</artifactId>

            <version>1.4.188</version>

        </dependency>

    </dependencies>

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

       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">

    <!-- 流程引擎配置 -->

    <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">

        <property name="jdbcUrl" value="jdbc:h2:mem:Activiti" />

        <property name="jdbcDriver" value="org.h2.Driver" />

        <property name="jdbcUsername" value="sa"></property>

        <property name="jdbcPassword" value=""></property>

        <!-- databaseSchemaUpdate 配置流程引擎启动/关闭时对数据库Schema的策略.取值有:

            false:默认子,检查DBSchema版本与Activiti开发包是否一致

            true:更新数据库中标信息,如果不存在则创建,推荐使用

            create-drop 启动时创建表 关闭时删除表

         -->

        <property name="databaseSchemaUpdate" value="true"></property>

    </bean>

</beans>

<?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="myProcess" name="第一个流程图" isExecutable="true">

    <startEvent id="startevent1" name="开始事件"></startEvent>

    <endEvent id="endevent1" name="结束事件"></endEvent>

    <userTask id="usertask1" name="HelloWorld"></userTask>

    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>

    <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>

  </process>

  <bpmndi:BPMNDiagram id="BPMNDiagram_myProcess">

    <bpmndi:BPMNPlane bpmnElement="myProcess" id="BPMNPlane_myProcess">

      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">

        <omgdc:Bounds height="35.0" width="35.0" x="90.0" y="180.0"></omgdc:Bounds>

      </bpmndi:BPMNShape>

      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">

        <omgdc:Bounds height="35.0" width="35.0" x="350.0" y="320.0"></omgdc:Bounds>

      </bpmndi:BPMNShape>

      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">

        <omgdc:Bounds height="55.0" width="105.0" x="360.0" y="180.0"></omgdc:Bounds>

      </bpmndi:BPMNShape>

      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">

        <omgdi:waypoint x="125.0" y="197.0"></omgdi:waypoint>

        <omgdi:waypoint x="360.0" y="207.0"></omgdi:waypoint>

      </bpmndi:BPMNEdge>

      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">

        <omgdi:waypoint x="412.0" y="235.0"></omgdi:waypoint>

        <omgdi:waypoint x="367.0" y="320.0"></omgdi:waypoint>

      </bpmndi:BPMNEdge>

    </bpmndi:BPMNPlane>

  </bpmndi:BPMNDiagram>

</definitions>

import org.activiti.engine.task.Task;

import org.activiti.engine.ProcessEngine;

import org.activiti.engine.ProcessEngineConfiguration;

import org.activiti.engine.RepositoryService;

import org.activiti.engine.RuntimeService;

import org.activiti.engine.TaskService;

import org.activiti.engine.runtime.ProcessInstance;

public class HelloWorld {

    public static void main(String[] args) {

        //1 获取流程引擎配置

        ProcessEngineConfiguration cfg = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("/config/activiti.cfg.xml");

        // 2 创建流程引擎

        ProcessEngine engine = cfg.buildProcessEngine();

        //3.获取 RepositoryService

        RepositoryService repositoryService = engine.getRepositoryService();

        //4 部署流程图

        repositoryService.createDeployment().addClasspathResource("process/Two.bpmn20.xml").deploy();

        //5. 获取运行时候服务RuntimeService

        RuntimeService runtimeService = engine.getRuntimeService();

        //6.获取流程实例

        String processDefinitionKey = "mine";

        ProcessInstance instance = runtimeService.startProcessInstanceByKey(processDefinitionKey);

        System.out.println(instance.getActivityId());

        //7.获取TaskService

        TaskService taskServer = engine.getTaskService();

        long count = taskServer.createTaskQuery().count();

        System.out.println("count:" + count);

        //8. 查询Task

        Task task = taskServer.createTaskQuery().singleResult();

        //9 处理任务

        System.out.println(task.getName());

    }

}

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import org.junit.Test;

public class H2DbTest {

    @Test

    public void testH2() {

        // 1 加载驱动

        try {

            Class.forName("org.h2.Driver");

            //2 获得数据库连接

            try {

                Connection conn= DriverManager.getConnection("jdbc:h2:mem:Activiti","sa","");

                // 3 创建Persion表

                Statement stt = conn.createStatement();

                String sql ="create table person(id int auto_increment primary key, name varchar(200));"

                        + " insert into person(name) values('vic')";

                stt.execute(sql);

                PreparedStatement ps = conn.prepareStatement("select * from person");

                ResultSet rs = ps.executeQuery();

                while(rs.next()) {

                    System.out.println("id:" + rs.getInt(1));

                    System.out.println("name:" + rs.getString(2));

                }

            } catch (SQLException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

        } catch (ClassNotFoundException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

}