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>
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
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();
-
-
}
-
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>
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
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