采用springboot+flowable快速實現工作流

文章目錄

• 一、什么是BPMN？
• 二、什么是Flowable？
• • 2.1. 官方描述如下
  • 2.2. 大白話理解
  • 2.3. 官方在線文檔
  • 2.4. Flowable官網
  • 2.5. Flowable開源代碼倉庫
  • 2.6. Flowable 最新版本(V6.4.2)截止目前下載地址
  • • 2.6.1. Tomcat 版本安裝包
    • 2.6.2. EAR版本版本安裝包
    • 2.6.3. Flowable源代碼（V6.4.2）下載地址
• 三、 Flowable流程示例
• • 3.1. Flowable的BPMN流程圖
  • 3.2. 流程圖的BMPN文件如下

一、什么是BPMN？

• 大白話理解：
  BPMN是一套符號的標準，這些符號描述了如果做一個業務，并且這個業務在做的過程中被人監控和控制。業務人員和開發人員通過這套圖形可以很好的完成協作。

二、什么是Flowable？

2.1. 官方描述如下

• Flowable提供了一個組高效的核心開源業務流程引擎，為開發人員，系統管理員和業務用戶提供工作流和業務流程管理（BPM）平臺。全部用Java編寫，并且基于Apache 2.0許可的開源，代碼在社區維護。其核心是一個快速，經過試驗和測試的動態BPMN流程引擎，附帶DMN決策表和CMMN Case管理引擎。

2.2. 大白話理解

• Flowable是BPMN的一個基于java的軟件實現，不過Flowable不僅僅包括BPMN，還有DMN決策表和CMMN Case管理引擎，并且有自己的用戶管理、- 微服務API等一系列功能，是一個服務平臺。

2.3. 官方在線文檔

Flowable BPMN 用戶手冊 (v 6.5.0-SNAPSHOT)
http://www.shareniu.com/flowable6.5_zh_document/bpm/index.html#
Flowable DOCS (v 6.4.2)：
https://www.flowable.org/docs/userguide/index.html

Flowable BPMN 用戶手冊 (v 6.3.0)：
https://tkjohn.github.io/flowable-userguide/

2.4. Flowable官網

https://www.flowable.org/

2.5. Flowable開源代碼倉庫

https://github.com/flowable/flowable-engine

2.6. Flowable 最新版本(V6.4.2)截止目前下載地址

2.6.1. Tomcat 版本安裝包

https://github.com/flowable/flowable-engine/releases/download/flowable-6.4.0/tomcat-flowable-6.4.0.zip

2.6.2. EAR版本版本安裝包

https://github.com/flowable/flowable-engine/releases/download/flowable-6.4.2/flowable-6.4.2.zip

2.6.3. Flowable源代碼（V6.4.2）下載地址

https://codeload.github.com/flowable/flowable-engine/zip/flowable-6.4.2

三、 Flowable流程示例

一個簡單度假申請流程主要過程如下：

• 1、員工提交請假信息，如工號，請假天數
• 2、經理點擊審批通過或者拒絕
• 3、如果拒絕直接進入系統發郵件服務通知員工
• 4、如果通過系統記錄該員工的請假天數，減少可用天數
• 5、員工看到自己請假審批通過，點擊完成請假。

3.1. Flowable的BPMN流程圖

3.2. 流程圖的BMPN文件如下

<?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: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="經理通過或駁回申請"></userTask><sequenceFlow id="sequenceFlow-d9127dc0-158f-4169-b61b-99226ffe8494" sourceRef="approveTask" targetRef="decision"></sequenceFlow><exclusiveGateway id="decision"></exclusiveGateway><serviceTask id="externalSystemCall" name="系統記錄申請天數" flowable:class="org.flowable.CallExternalSystemDelegate"></serviceTask><sequenceFlow id="sequenceFlow-6232f578-3975-4d7e-81f2-43b242d33ebd" sourceRef="externalSystemCall" targetRef="holidayApprovedTask"></sequenceFlow><userTask id="holidayApprovedTask" name="員工查看申請通過"></userTask><sequenceFlow id="sequenceFlow-29fd3375-9bcb-42f2-bb6f-63ae1f98813a" sourceRef="holidayApprovedTask" targetRef="approveEnd"></sequenceFlow><serviceTask id="sendRejectionMail" name="發送駁回郵件" 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="駁回" sourceRef="decision" targetRef="sendRejectionMail"><conditionExpression xsi:type="tFormalExpression"><![CDATA[${!approved}]]></conditionExpression></sequenceFlow><sequenceFlow id="sequenceFlow-2470619b-fa36-440b-a231-b7bd226c23bb" name="通過" sourceRef="decision" targetRef="externalSystemCall"><conditionExpression xsi:type="tFormalExpression"><![CDATA[${approved}]]></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>

注：文件名為Holiday_Request.bpmn20.xml，flowable支持以BPMN和bpm

n20.xml結尾的流程文件。

上面的xml看起來非常恐怖，不用擔心，后面我會介紹Flowable的專門的流程繪制軟件。

以上主要讓大家對Flowable有個簡單的了解，下一節介紹如何啟動Flowable，并且介紹Flowable的啟動包的相關內容。

下一篇：
第2篇：Flowable啟動
https://blog.csdn.net/weixin_40816738/article/details/102875324

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