Activiti----hellowWorld(使用H2数据库)

<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();
}

}
}