spring boot activiti工作流的搭建与简单使用
前言
最近一直研究springboot,根据工作需求,工作流需要作为一个单独的微服务工程来提供给其他服务调用,现在简单的写下工作流(使用的activiti)微服务的搭建与简单使用
jdk:1.8
数据库:mysql 5.7
IDE:eclipse
springboot:1.5.8
activiti:6.0.0
1.新建空白的maven微服务架构
新建maven项目的流程不在阐述,这里添加上activiti、myslq连接的依赖,只贴主要代码
pox.xml
<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>4.0.0</modelVersion> <groupId>com.xxx</groupId> <artifactId>xxx</artifactId> <version>0.0.1-SNAPSHOT</version> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <java.version>1.8</java.version> </properties> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.8.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.activiti</groupId> <artifactId>activiti-spring-boot-starter-basic</artifactId> <version>6.0.0</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
确认服务是可用
2.连接服务名、服务端口、数据库配置
在resources目录下的application.properties(项目定位原因没有使用yaml,可根据自己项目使用)
spring.datasource.driver-class-name=com.mysql.jdbc.Driver spring.datasource.url=jdbc:mysql://127.0.0.1:3306/activity?characterEncoding=utf8&useSSL=true spring.datasource.username=root spring.datasource.password=root spring.jpa.properties.hibernate.hbm2ddl.auto=update spring.jpa.show-sql=true server.port=8081 server.context-path=/activity server.session.timeout=10 server.tomcat.uri-encoding=UTF-8
确认配置的数据库可用
3.main
import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * Created by Guo on 2017/11/15. */ @SpringBootApplication public class ActivityApp { public static void main(String[] args) { SpringApplication.run(ActivityApp.class, args); } }
4.service及实现
service:
import org.activiti.engine.task.TaskQuery; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("/activityService") public interface ActivityConsumerService { /** * 流程demo * @return */ @RequestMapping(value="/startActivityDemo",method=RequestMethod.GET) public boolean startActivityDemo(); }
impl
import java.util.HashMap; import java.util.Map; import org.activiti.engine.RuntimeService; import org.activiti.engine.TaskService; import org.activiti.engine.impl.persistence.entity.ExecutionEntity; import org.activiti.engine.task.Task; import org.activiti.engine.task.TaskQuery; import org.apache.commons.lang3.StringUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.hongguaninfo.activity.service.ActivityConsumerService; @Service("activityService") public class ActivityConsumerServiceImpl implements ActivityConsumerService { @Autowired private RuntimeService runtimeService; @Autowired private TaskService taskService; @Override public boolean startActivityDemo() { System.out.println("method startActivityDemo begin...."); Map<String,Object> map = new HashMap<String,Object>(); map.put("apply","zhangsan"); map.put("approve","lisi"); //流程启动 ExecutionEntity pi1 = (ExecutionEntity) runtimeService.startProcessInstanceByKey("leave",map); String processId = pi1.getId(); String taskId = pi1.getTasks().get(0).getId(); taskService.complete(taskId, map);//完成第一步申请 Task task = taskService.createTaskQuery().processInstanceId(processId).singleResult(); String taskId2 = task.getId(); map.put("pass", false); taskService.complete(taskId2, map);//驳回申请 System.out.println("method startActivityDemo end...."); return false; } }
5.bpmn
在resources目录下新建文件夹:processes,并在processes创建一个新的bpmn文件,如图
文件内容:
<?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" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:di="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/testm1510735932336" id="m1510735932336" name=""> <process id="leave" isExecutable="true" isClosed="false" processType="None"> <startEvent id="_2" name="StartEvent"></startEvent> <endEvent id="_3" name="EndEvent"></endEvent> <userTask id="approve" name="经理审批" activiti:assignee="${approve}"></userTask> <exclusiveGateway id="_5" name="ExclusiveGateway"></exclusiveGateway> <sequenceFlow id="_6" sourceRef="approve" targetRef="_5"></sequenceFlow> <sequenceFlow id="_7" name="通过" sourceRef="_5" targetRef="_3"> <conditionExpression xsi:type="tFormalExpression"><![CDATA[${pass}]]></conditionExpression> </sequenceFlow> <userTask id="application" name="提交申请" activiti:assignee="${apply}"></userTask> <sequenceFlow id="_9" sourceRef="_2" targetRef="application"></sequenceFlow> <sequenceFlow id="_10" sourceRef="application" targetRef="approve"></sequenceFlow> <userTask id="modify" name="修改申请" activiti:assignee="${apply}"></userTask> <sequenceFlow id="_12" name="不通过" sourceRef="_5" targetRef="modify"> <conditionExpression xsi:type="tFormalExpression"><![CDATA[${!pass}]]></conditionExpression> </sequenceFlow> <sequenceFlow id="_13" sourceRef="modify" targetRef="approve"></sequenceFlow> </process> <bpmndi:BPMNDiagram id="BPMNDiagram_leave"> <bpmndi:BPMNPlane bpmnElement="leave" id="BPMNPlane_leave"> <bpmndi:BPMNShape bpmnElement="_2" id="BPMNShape__2"> <omgdc:Bounds height="35.0" width="35.0" x="15.0" y="60.0"></omgdc:Bounds> </bpmndi:BPMNShape> <bpmndi:BPMNShape bpmnElement="_3" id="BPMNShape__3"> <omgdc:Bounds height="35.0" width="35.0" x="630.0" y="63.0"></omgdc:Bounds> </bpmndi:BPMNShape> <bpmndi:BPMNShape bpmnElement="approve" id="BPMNShape_approve"> <omgdc:Bounds height="55.0" width="85.0" x="315.0" y="50.0"></omgdc:Bounds> </bpmndi:BPMNShape> <bpmndi:BPMNShape bpmnElement="_5" id="BPMNShape__5"> <omgdc:Bounds height="40.0" width="40.0" x="505.0" y="60.0"></omgdc:Bounds> </bpmndi:BPMNShape> <bpmndi:BPMNShape bpmnElement="application" id="BPMNShape_application"> <omgdc:Bounds height="55.0" width="85.0" x="135.0" y="50.0"></omgdc:Bounds> </bpmndi:BPMNShape> <bpmndi:BPMNShape bpmnElement="modify" id="BPMNShape_modify"> <omgdc:Bounds height="55.0" width="85.0" x="315.0" y="150.0"></omgdc:Bounds> </bpmndi:BPMNShape> <bpmndi:BPMNEdge bpmnElement="_6" id="BPMNEdge__6"> <omgdi:waypoint x="400.0" y="77.0"></omgdi:waypoint> <omgdi:waypoint x="505.0" y="80.0"></omgdi:waypoint> </bpmndi:BPMNEdge> <bpmndi:BPMNEdge bpmnElement="_7" id="BPMNEdge__7"> <omgdi:waypoint x="545.0" y="80.0"></omgdi:waypoint> <omgdi:waypoint x="630.0" y="80.0"></omgdi:waypoint> </bpmndi:BPMNEdge> <bpmndi:BPMNEdge bpmnElement="_9" id="BPMNEdge__9"> <omgdi:waypoint x="50.0" y="77.0"></omgdi:waypoint> <omgdi:waypoint x="135.0" y="77.0"></omgdi:waypoint> </bpmndi:BPMNEdge> <bpmndi:BPMNEdge bpmnElement="_10" id="BPMNEdge__10"> <omgdi:waypoint x="220.0" y="77.0"></omgdi:waypoint> <omgdi:waypoint x="315.0" y="77.0"></omgdi:waypoint> </bpmndi:BPMNEdge> <bpmndi:BPMNEdge bpmnElement="_12" id="BPMNEdge__12"> <omgdi:waypoint x="525.0" y="100.0"></omgdi:waypoint> <omgdi:waypoint x="525.0" y="177.0"></omgdi:waypoint> <omgdi:waypoint x="400.0" y="177.0"></omgdi:waypoint> </bpmndi:BPMNEdge> <bpmndi:BPMNEdge bpmnElement="_13" id="BPMNEdge__13"> <omgdi:waypoint x="357.0" y="150.0"></omgdi:waypoint> <omgdi:waypoint x="357.0" y="105.0"></omgdi:waypoint> </bpmndi:BPMNEdge> </bpmndi:BPMNPlane> </bpmndi:BPMNDiagram> </definitions>
需要认知的问题:.项目启动的时候,activiti会自动在mysql中创建activiti相关表,不用像oracle那样需要手动去创建
6.验证
启动项目前,连接数据库,查看需要连接数据库中没有表,启动项目完成后,刷新数据库,activiti已经创建相关表,打开act_re_procdef表,流程数据已经存在,即流程已经部署成功。
用浏览器访问地址:http://127.0.0.1:8081/activity/activityService/startActivityDemo
打印了预计的日志,没有报错信息,查看数据库中的act_ru_task表,发现刚才执行形成的数据,项目成功。
PS:只是简单的微服务,没有去写注册服务、网关配置、熔断机制等等,仅用于activiti与springboot的结合
=========================后续==========================
1.在项目单独作为一个引擎,本身不部署流程的时候,如果resources目录没有“processes”目录,启动项目报错--找不到processes目录。需要在配置文件中添加一下内容:
spring: activiti: ####校验流程文件,默认校验resources下的processes文件夹里的流程文件 check-process-definitions: false
即启动项目,不去校验processes。
总结
以上就是这篇文章的全部内容了,希望本文的内容对大家的学习或者工作具有一定的参考学习价值,如果有疑问大家可以留言交流,谢谢大家对脚本之家的支持。
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