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/startActivityDemoPS: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。