springboot activiti工作流简单示例
最近一直研究springboot，根據工作需求，工作流需要作為一個單獨的微服務工程來提供給其他服務調用，現在簡單的寫下工作流（使用的activiti）微服務的搭建與簡單使用
jdk：1.8
數據庫：mysql ?5.7
IDE：eclipse
springboot：1.5.8
activiti：6.0.0
1.新建空白的maven微服務架構
新建maven項目的流程不在闡述，這里添加上activiti、myslq連接的依賴，只貼主要代碼
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>
確認服務是可用
2.連接服務名、服務端口、數據庫配置
在resources目錄下的application.properties（項目定位原因沒有使用yaml，可根據自己項目使用）
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
確認配置的數據庫可用
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及實現
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");
//流程啟動
ExecutionEntity pi1 = (ExecutionEntity) runtimeService.startProcessInstanceByKey("leave",map);
String processId = pi1.getId();
String taskId = pi1.getTasks().get(0).getId();
taskService.complete(taskId, map);//完成第一步申請
Task task = taskService.createTaskQuery().processInstanceId(processId).singleResult();
String taskId2 = task.getId();
map.put("pass", false);
taskService.complete(taskId2, map);//駁回申請
System.out.println("method startActivityDemo end....");
return false;
}
}
5.bpmn
在resources目錄下新建文件夾：processes，并在processes創建一個新的bpmn文件，如圖
文件內容：
<?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="經理審批" activiti:assignee="${approve}"></userTask>
<exclusiveGateway id="_5" name="ExclusiveGateway"></exclusiveGateway>
<sequenceFlow id="_6" sourceRef="approve" targetRef="_5"></sequenceFlow>
<sequenceFlow id="_7" name="通過" sourceRef="_5" targetRef="_3">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${pass}]]></conditionExpression>
</sequenceFlow>
<userTask id="application" name="提交申請" activiti:assignee="${apply}"></userTask>
<sequenceFlow id="_9" sourceRef="_2" targetRef="application"></sequenceFlow>
<sequenceFlow id="_10" sourceRef="application" targetRef="approve"></sequenceFlow>
<userTask id="modify" name="修改申請" activiti:assignee="${apply}"></userTask>
<sequenceFlow id="_12" name="不通過" 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>
需要認知的問題：.項目啟動的時候，activiti會自動在mysql中創建activiti相關表，不用像oracle那樣需要手動去創建
6.驗證
啟動項目前，連接數據庫，查看需要連接數據庫中沒有表，啟動項目完成后，刷新數據庫，activiti已經創建相關表，打開act_re_procdef表，流程數據已經存在，即流程已經部署成功。
用瀏覽器訪問地址：http://127.0.0.1:8081/activity/activityService/startActivityDemo打印了預計的日志，沒有報錯信息，查看數據庫中的act_ru_task表，發現剛才執行形成的數據，項目成功。
PS:只是簡單的微服務，沒有去寫注冊服務、網關配置、熔斷機制等等，僅用于activiti與springboot的結合
=========================后續==========================
1.在項目單獨作為一個引擎，本身不部署流程的時候，如果resources目錄沒有“processes”目錄，啟動項目報錯--找不到processes目錄。需要在配置文件中添加一下內容：
spring:
activiti:
####校驗流程文件，默認校驗resources下的processes文件夾里的流程文件
check-process-definitions: false
即啟動項目，不去校驗processes。
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原文地址：https://blog.csdn.net/kkkder/article/details/78562349
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