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
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<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）
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spring.datasource.driver-class-name=com.mysql.jdbc.driverspring.datasource.url=jdbc:mysql://127.0.0.1:3306/activity?characterencoding=utf8&usessl=truespring.datasource.username=rootspring.datasource.password=rootspring.jpa.properties.hibernate.hbm2ddl.auto=updatespring.jpa.show-sql=trueserver.port=8081server.context-path=/activityserver.session.timeout=10server.tomcat.uri-encoding=utf-8 |
确认配置的数据库可用
3.main
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import org.springframework.boot.springapplication;import org.springframework.boot.autoconfigure.springbootapplication; /** * created by guo on 2017/11/15. */@springbootapplicationpublic class activityapp{ public static void main(string[] args) { springapplication.run(activityapp.class, args); }} |
4.service及实现
service:
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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
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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：
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<?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：
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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，谢谢大家对服务器之家的支持。
原文链接：https://blog.csdn.net/kkkder/article/details/78562349
