先来看下百度百科的定义:
由BPMI(The Business Process Management Initiative)开发了一套标准叫业务流程建模符号(BPMN - Business Process Modeling Notation)。在 BPMI Notation Working Group超过2年的努力,于2004年5月对外发布了BPMN 1.0 规范。后BPMI并入到OMG组织,OMG于2011年推出BPMN2.0标准,对BPMN进行了重新定义**(Business Process Model and Notation**)。BPMN的主要目标是提供一些被所有业务用户容易理解的符号,从创建流程轮廓的业务分析到这些流程的实现,直到最终用户的管理监控。BPMN也支持提供一个内部的模型可以生成可执行的BPEL4WS。因此BPMN的出现,弥补了从业务流程设计到流程开发的间隙。
BPMN定义了一个业务流程图(Business Process Diagram),该业务流程图基于一个流程图(flowcharting),该流程图被设计用于创建业务流程操作的图形化模型。而一个业务流程模型(Business Process Model),指一个由图形对象(graphical objects)组成的网状图,图形对象包括活动(activities)和用于定义这些活动执行顺序的流程控制器(flow controls)。
大白话理解:
BPMN是一套符号的标准,这些符号描述了如果做一个业务,并且这个业务在做的过程中被人监控和控制。业务人员和开发人员通过这套图形可以很好的完成协作。
官方描述如下:
Flowable提供了一个组高效的核心开源业务流程引擎,为开发人员,系统管理员和业务用户提供工作流和业务流程管理(BPM)平台。全部用Java编写,并且基于Apache 2.0许可的开源,代码在社区维护。其核心是一个快速,经过试验和测试的动态BPMN流程引擎,附带DMN决策表和CMMN Case管理引擎.
大白话理解:
Flowable是BPMN的一个基于java的软件实现,不过Flowable不仅仅包括BPMN,还有DMN决策表和CMMN Case管理引擎,并且有自己的用户管理、微服务API等一系列功能,是一个服务平台。
Flowable官方网站:
https://www.flowable.org/
Flowable开源代码仓库:
https://github.com/flowable/flowable-engine
Flowable 最新版本(V6.4.0)截止目前下载地址:
Tomcat 版本安装包:
https://download.csdn.net/download/houyj1986/10871025
https://github.com/flowable/flowable-engine/releases/download/flowable-6.4.0/tomcat-flowable-6.4.0.zip
EAR版本版本安装包:
https://download.csdn.net/download/houyj1986/10871018
https://github.com/flowable/flowable-engine/releases/download/flowable-6.4.0/flowable-6.4.0.zip
Flowable源代码(V6.4.0)下载地址:
https://download.csdn.net/download/houyj1986/10871014
一个简单度假申请流程主要过程如下:
1、员工提交请假信息,如工号,请假天数
2、经理点击审批通过或者拒绝
3、如果拒绝直接进入系统发邮件服务通知员工
4、如果通过系统记录该员工的请假天数,减少可用天数
5、员工看到自己请假审批通过,点击完成请假。
Flowable的BPMN流程图:
流程图的BMPN文件如下:
<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:flowable="http://flowable.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" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.flowable.org/processdef">
<process id="holidayRequest" name="Holiday Request" isExecutable="true">
<startEvent id="startEvent">startEvent>
<sequenceFlow id="sequenceFlow-3fa7af74-df9a-4d3a-b0eb-10b20e7dc202" sourceRef="startEvent" targetRef="approveTask">sequenceFlow>
<userTask id="approveTask" name="经理通过或驳回申请">userTask>
<sequenceFlow id="sequenceFlow-d9127dc0-158f-4169-b61b-99226ffe8494" sourceRef="approveTask" targetRef="decision">sequenceFlow>
<exclusiveGateway id="decision">exclusiveGateway>
<serviceTask id="externalSystemCall" name="系统记录申请天数" flowable:class="org.flowable.CallExternalSystemDelegate">serviceTask>
<sequenceFlow id="sequenceFlow-6232f578-3975-4d7e-81f2-43b242d33ebd" sourceRef="externalSystemCall" targetRef="holidayApprovedTask">sequenceFlow>
<userTask id="holidayApprovedTask" name="员工查看申请通过">userTask>
<sequenceFlow id="sequenceFlow-29fd3375-9bcb-42f2-bb6f-63ae1f98813a" sourceRef="holidayApprovedTask" targetRef="approveEnd">sequenceFlow>
<serviceTask id="sendRejectionMail" name="发送驳回邮件" flowable:class="org.flowable.SendRejectionMail">serviceTask>
<sequenceFlow id="sequenceFlow-b390b442-2411-44a9-96eb-3c129d4c8408" sourceRef="sendRejectionMail" targetRef="rejectEnd">sequenceFlow>
<endEvent id="approveEnd">endEvent>
<endEvent id="rejectEnd">endEvent>
<sequenceFlow id="sequenceFlow-6f21d3e2-2e49-4b00-9aae-0b71d861a177" name="驳回" sourceRef="decision" targetRef="sendRejectionMail">
<conditionExpression xsi:type="tFormalExpression">conditionExpression>
sequenceFlow>
<sequenceFlow id="sequenceFlow-2470619b-fa36-440b-a231-b7bd226c23bb" name="通过" sourceRef="decision" targetRef="externalSystemCall">
<conditionExpression xsi:type="tFormalExpression">conditionExpression>
sequenceFlow>
process>
<bpmndi:BPMNDiagram id="BPMNDiagram_holidayRequest">
<bpmndi:BPMNPlane bpmnElement="holidayRequest" id="BPMNPlane_holidayRequest">
<bpmndi:BPMNShape bpmnElement="startEvent" id="BPMNShape_startEvent">
<omgdc:Bounds height="30.0" width="30.0" x="0.0" y="95.0">omgdc:Bounds>
bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="approveTask" id="BPMNShape_approveTask">
<omgdc:Bounds height="60.0" width="100.0" x="80.0" y="80.0">omgdc:Bounds>
bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="decision" id="BPMNShape_decision">
<omgdc:Bounds height="40.0" width="40.0" x="230.0" y="90.0">omgdc:Bounds>
bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="externalSystemCall" id="BPMNShape_externalSystemCall">
<omgdc:Bounds height="60.0" width="100.0" x="320.0" y="1.0">omgdc:Bounds>
bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="holidayApprovedTask" id="BPMNShape_holidayApprovedTask">
<omgdc:Bounds height="60.0" width="100.0" x="470.0" y="1.0">omgdc:Bounds>
bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="sendRejectionMail" id="BPMNShape_sendRejectionMail">
<omgdc:Bounds height="60.0" width="100.0" x="320.0" y="160.0">omgdc:Bounds>
bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="approveEnd" id="BPMNShape_approveEnd">
<omgdc:Bounds height="28.0" width="28.0" x="620.0" y="16.0">omgdc:Bounds>
bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="rejectEnd" id="BPMNShape_rejectEnd">
<omgdc:Bounds height="28.0" width="28.0" x="505.0" y="175.0">omgdc:Bounds>
bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="sequenceFlow-2470619b-fa36-440b-a231-b7bd226c23bb" id="BPMNEdge_sequenceFlow-2470619b-fa36-440b-a231-b7bd226c23bb">
<omgdi:waypoint x="250.0" y="90.0">omgdi:waypoint>
<omgdi:waypoint x="250.0" y="31.0">omgdi:waypoint>
<omgdi:waypoint x="319.99999999999284" y="31.0">omgdi:waypoint>
bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="sequenceFlow-3fa7af74-df9a-4d3a-b0eb-10b20e7dc202" id="BPMNEdge_sequenceFlow-3fa7af74-df9a-4d3a-b0eb-10b20e7dc202">
<omgdi:waypoint x="29.949998618355412" y="110.0">omgdi:waypoint>
<omgdi:waypoint x="80.0" y="110.0">omgdi:waypoint>
bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="sequenceFlow-6232f578-3975-4d7e-81f2-43b242d33ebd" id="BPMNEdge_sequenceFlow-6232f578-3975-4d7e-81f2-43b242d33ebd">
<omgdi:waypoint x="419.95000000000005" y="31.0">omgdi:waypoint>
<omgdi:waypoint x="470.0" y="31.0">omgdi:waypoint>
bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="sequenceFlow-b390b442-2411-44a9-96eb-3c129d4c8408" id="BPMNEdge_sequenceFlow-b390b442-2411-44a9-96eb-3c129d4c8408">
<omgdi:waypoint x="419.949999999997" y="189.66442953020135">omgdi:waypoint>
<omgdi:waypoint x="505.00030595247523" y="189.0936221647077">omgdi:waypoint>
bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="sequenceFlow-d9127dc0-158f-4169-b61b-99226ffe8494" id="BPMNEdge_sequenceFlow-d9127dc0-158f-4169-b61b-99226ffe8494">
<omgdi:waypoint x="179.9499999999898" y="110.0">omgdi:waypoint>
<omgdi:waypoint x="230.0" y="110.0">omgdi:waypoint>
bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="sequenceFlow-29fd3375-9bcb-42f2-bb6f-63ae1f98813a" id="BPMNEdge_sequenceFlow-29fd3375-9bcb-42f2-bb6f-63ae1f98813a">
<omgdi:waypoint x="569.9499999999988" y="31.0">omgdi:waypoint>
<omgdi:waypoint x="582.0" y="31.0">omgdi:waypoint>
<omgdi:waypoint x="582.0" y="31.0">omgdi:waypoint>
<omgdi:waypoint x="620.0025321198765" y="30.268220825690175">omgdi:waypoint>
bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="sequenceFlow-6f21d3e2-2e49-4b00-9aae-0b71d861a177" id="BPMNEdge_sequenceFlow-6f21d3e2-2e49-4b00-9aae-0b71d861a177">
<omgdi:waypoint x="250.0" y="129.9375468164794">omgdi:waypoint>
<omgdi:waypoint x="250.0" y="190.0">omgdi:waypoint>
<omgdi:waypoint x="319.99999999997794" y="190.0">omgdi:waypoint>
bpmndi:BPMNEdge>
bpmndi:BPMNPlane>
bpmndi:BPMNDiagram>
definitions>
文件名为Holiday_Request.bpmn20.xml,flowable支持以BPMN和bpmn20.xml结尾的流程文件。上面的xml看起来非常恐怖,不用担心,后面我会介绍Flowable的专门的流程绘制软件。
以上主要让大家对Flowable有个简单的了解,下一节介绍如何启动Flowable,并且介绍Flowable的启动包的相关内容。
转载请联系作者,谢谢。由书山登峰人创作。