springboot activiti工作流简单示例
最近一直研究springboot，根據(jù)工作需求，工作流需要作為一個(gè)單獨(dú)的微服務(wù)工程來(lái)提供給其他服務(wù)調(diào)用，現(xiàn)在簡(jiǎn)單的寫(xiě)下工作流（使用的activiti）微服務(wù)的搭建與簡(jiǎn)單使用
jdk：1.8
數(shù)據(jù)庫(kù)：mysql ?5.7
IDE：eclipse
springboot：1.5.8
activiti：6.0.0
1.新建空白的maven微服務(wù)架構(gòu)
新建maven項(xiàng)目的流程不在闡述，這里添加上activiti、myslq連接的依賴(lài)，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(rèn)服務(wù)是可用
2.連接服務(wù)名、服務(wù)端口、數(shù)據(jù)庫(kù)配置
在resources目錄下的application.properties（項(xiàng)目定位原因沒(méi)有使用yaml，可根據(jù)自己項(xiàng)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(rèn)配置的數(shù)據(jù)庫(kù)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(shí)現(xiàn)
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(dòng)
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(qǐng)
Task task = taskService.createTaskQuery().processInstanceId(processId).singleResult();
String taskId2 = task.getId();
map.put("pass", false);
taskService.complete(taskId2, map);//駁回申請(qǐng)
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(chuàng)建一個(gè)新的bpmn文件，如圖
文件內(nèi)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(jīng)理審批" activiti:assignee="${approve}"></userTask>
<exclusiveGateway id="_5" name="ExclusiveGateway"></exclusiveGateway>
<sequenceFlow id="_6" sourceRef="approve" targetRef="_5"></sequenceFlow>
<sequenceFlow id="_7" name="通過(guò)" sourceRef="_5" targetRef="_3">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${pass}]]></conditionExpression>
</sequenceFlow>
<userTask id="application" name="提交申請(qǐng)" activiti:assignee="${apply}"></userTask>
<sequenceFlow id="_9" sourceRef="_2" targetRef="application"></sequenceFlow>
<sequenceFlow id="_10" sourceRef="application" targetRef="approve"></sequenceFlow>
<userTask id="modify" name="修改申請(qǐng)" activiti:assignee="${apply}"></userTask>
<sequenceFlow id="_12" name="不通過(guò)" 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(rèn)知的問(wèn)題：.項(xiàng)目啟動(dòng)的時(shí)候，activiti會(huì)自動(dòng)在mysql中創(chuàng)建activiti相關(guān)表，不用像oracle那樣需要手動(dòng)去創(chuàng)建
6.驗(yàn)證
啟動(dòng)項(xiàng)目前，連接數(shù)據(jù)庫(kù)，查看需要連接數(shù)據(jù)庫(kù)中沒(méi)有表，啟動(dòng)項(xiàng)目完成后，刷新數(shù)據(jù)庫(kù)，activiti已經(jīng)創(chuàng)建相關(guān)表，打開(kāi)act_re_procdef表，流程數(shù)據(jù)已經(jīng)存在，即流程已經(jīng)部署成功。
用瀏覽器訪(fǎng)問(wèn)地址：http://127.0.0.1:8081/activity/activityService/startActivityDemo打印了預(yù)計(jì)的日志，沒(méi)有報(bào)錯(cuò)信息，查看數(shù)據(jù)庫(kù)中的act_ru_task表，發(fā)現(xiàn)剛才執(zhí)行形成的數(shù)據(jù)，項(xiàng)目成功。
PS:只是簡(jiǎn)單的微服務(wù)，沒(méi)有去寫(xiě)注冊(cè)服務(wù)、網(wǎng)關(guān)配置、熔斷機(jī)制等等，僅用于activiti與springboot的結(jié)合
=========================后續(xù)==========================
1.在項(xiàng)目單獨(dú)作為一個(gè)引擎，本身不部署流程的時(shí)候，如果resources目錄沒(méi)有“processes”目錄，啟動(dòng)項(xiàng)目報(bào)錯(cuò)--找不到processes目錄。需要在配置文件中添加一下內(nèi)容：
spring:
activiti:
####校驗(yàn)流程文件，默認(rèn)校驗(yàn)resources下的processes文件夾里的流程文件
check-process-definitions: false
即啟動(dòng)項(xiàng)目，不去校驗(yàn)processes。
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原文地址：https://blog.csdn.net/kkkder/article/details/78562349
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