springboot —— flowable

最新推荐文章于 2024-12-05 16:01:04 发布

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最新推荐文章于 2024-12-05 16:01:04 发布

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分类专栏： java spring 文章标签： java spring boot eureka

本文链接：https://blog.youkuaiyun.com/qq_31319235/article/details/122056039

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本文介绍如何使用Flowable工作流引擎搭建Spring Boot项目，并详细解释了从项目创建、依赖添加到流程图设计与部署的全过程。同时，通过具体示例展示了如何在控制器中调用流程。

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1、创建springboot项目

2、添加flowable版本依赖，包括数据库等等

<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.7</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>11</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</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-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Flowable spring-boot 版套餐 -->
        <dependency>
            <groupId>org.flowable</groupId>
            <artifactId>flowable-spring-boot-starter</artifactId>
            <version>6.4.1</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

3、配置yml文件

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/flowable-spring-boot
    username: root
    password: 
    driver-class-name: com.mysql.cj.jdbc.Driver
flowable:
  #关闭定时任务
  async-executor-activate: false

4、创建数据库，数据库为yml配置文件的数据库

5、启动springboot 项目，之后可以看到flowable的所需要的数据库表信息

6、 flowable+tomcat部署flowable项目，在线画流程图。

https://blog.youkuaiyun.com/qq_31319235/article/details/122056420

7、将设计好的流程图复制到resources/processes/目录下,如果提示流程未找到，可以将processes目录替换成flows目录

8、然后就可以在contoller中测试设计好的工作流

<?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="one" name="one" isExecutable="true">
    <startEvent id="startEvent1"></startEvent>
    <exclusiveGateway id="sid-E3445F3F-A4B3-49C1-99A7-F0169B0EF92C"></exclusiveGateway>
    <sequenceFlow id="sid-850F6881-EC3F-4FBB-8D73-1418FAB87220" sourceRef="startEvent1" targetRef="sid-E3445F3F-A4B3-49C1-99A7-F0169B0EF92C"></sequenceFlow>
    <userTask id="sid-791432D1-AACA-496C-A12F-9258EB149114"></userTask>
    <userTask id="sid-DC38F07C-8EAD-406E-A7AC-17FB77815BD5"></userTask>
    <userTask id="sid-76690B04-AEC8-4B52-AD72-1B2D03C63C9C"></userTask>
    <sequenceFlow id="sid-61034E5D-714A-450A-9A7D-F70106FB8F8E" sourceRef="sid-E3445F3F-A4B3-49C1-99A7-F0169B0EF92C" targetRef="sid-DC38F07C-8EAD-406E-A7AC-17FB77815BD5">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${input==2}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="sid-CA5A023A-447E-4B7B-A65B-9AC2FF1BB977" sourceRef="sid-E3445F3F-A4B3-49C1-99A7-F0169B0EF92C" targetRef="sid-76690B04-AEC8-4B52-AD72-1B2D03C63C9C">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${input ==3}]]></conditionExpression>
    </sequenceFlow>
    <exclusiveGateway id="sid-70045EB9-DD09-4DB8-923E-B2BF8AAD8E90"></exclusiveGateway>
    <sequenceFlow id="sid-C1ED5080-0D69-4E54-8172-7CFB5DAC4105" sourceRef="sid-DC38F07C-8EAD-406E-A7AC-17FB77815BD5" targetRef="sid-70045EB9-DD09-4DB8-923E-B2BF8AAD8E90"></sequenceFlow>
    <sequenceFlow id="sid-4AB91AF6-0907-48EF-9026-E71DDDD4F0F8" sourceRef="sid-76690B04-AEC8-4B52-AD72-1B2D03C63C9C" targetRef="sid-70045EB9-DD09-4DB8-923E-B2BF8AAD8E90"></sequenceFlow>
    <endEvent id="sid-93DB5674-D50B-47BD-9837-4BBC22680EEE"></endEvent>
    <sequenceFlow id="sid-774ED41C-33CE-4BE5-986E-6598FCF5262C" sourceRef="sid-70045EB9-DD09-4DB8-923E-B2BF8AAD8E90" targetRef="sid-93DB5674-D50B-47BD-9837-4BBC22680EEE"></sequenceFlow>
    <sequenceFlow id="sid-97029FB6-AD81-40F2-899D-245679A4B61E" sourceRef="sid-E3445F3F-A4B3-49C1-99A7-F0169B0EF92C" targetRef="sid-791432D1-AACA-496C-A12F-9258EB149114">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${input==1}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="sid-B657A1B9-16A7-4FEE-A7D8-5FAE341C4EBA" sourceRef="sid-791432D1-AACA-496C-A12F-9258EB149114" targetRef="sid-70045EB9-DD09-4DB8-923E-B2BF8AAD8E90">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${input==10}]]></conditionExpression>
    </sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_one">
    <bpmndi:BPMNPlane bpmnElement="one" id="BPMNPlane_one">
      <bpmndi:BPMNShape bpmnElement="startEvent1" id="BPMNShape_startEvent1">
        <omgdc:Bounds height="30.0" width="30.0" x="100.0" y="163.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-E3445F3F-A4B3-49C1-99A7-F0169B0EF92C" id="BPMNShape_sid-E3445F3F-A4B3-49C1-99A7-F0169B0EF92C">
        <omgdc:Bounds height="40.0" width="40.0" x="197.5" y="162.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-791432D1-AACA-496C-A12F-9258EB149114" id="BPMNShape_sid-791432D1-AACA-496C-A12F-9258EB149114">
        <omgdc:Bounds height="80.0" width="100.0" x="300.25" y="31.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-DC38F07C-8EAD-406E-A7AC-17FB77815BD5" id="BPMNShape_sid-DC38F07C-8EAD-406E-A7AC-17FB77815BD5">
        <omgdc:Bounds height="80.0" width="100.0" x="300.25" y="150.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-76690B04-AEC8-4B52-AD72-1B2D03C63C9C" id="BPMNShape_sid-76690B04-AEC8-4B52-AD72-1B2D03C63C9C">
        <omgdc:Bounds height="80.0" width="100.0" x="300.25" y="270.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-70045EB9-DD09-4DB8-923E-B2BF8AAD8E90" id="BPMNShape_sid-70045EB9-DD09-4DB8-923E-B2BF8AAD8E90">
        <omgdc:Bounds height="40.0" width="40.0" x="526.5" y="171.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-93DB5674-D50B-47BD-9837-4BBC22680EEE" id="BPMNShape_sid-93DB5674-D50B-47BD-9837-4BBC22680EEE">
        <omgdc:Bounds height="28.0" width="28.0" x="712.5" y="186.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="sid-CA5A023A-447E-4B7B-A65B-9AC2FF1BB977" id="BPMNEdge_sid-CA5A023A-447E-4B7B-A65B-9AC2FF1BB977">
        <omgdi:waypoint x="227.64820088512604" y="191.8017324350337"></omgdi:waypoint>
        <omgdi:waypoint x="308.75852606820854" y="270.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-61034E5D-714A-450A-9A7D-F70106FB8F8E" id="BPMNEdge_sid-61034E5D-714A-450A-9A7D-F70106FB8F8E">
        <omgdi:waypoint x="235.92695745441546" y="183.51699463327373"></omgdi:waypoint>
        <omgdi:waypoint x="300.25" y="187.16446124763706"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-774ED41C-33CE-4BE5-986E-6598FCF5262C" id="BPMNEdge_sid-774ED41C-33CE-4BE5-986E-6598FCF5262C">
        <omgdi:waypoint x="565.0886363636363" y="192.3567819148936"></omgdi:waypoint>
        <omgdi:waypoint x="712.5134135194986" y="199.3377759371677"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-97029FB6-AD81-40F2-899D-245679A4B61E" id="BPMNEdge_sid-97029FB6-AD81-40F2-899D-245679A4B61E">
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      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-C1ED5080-0D69-4E54-8172-7CFB5DAC4105" id="BPMNEdge_sid-C1ED5080-0D69-4E54-8172-7CFB5DAC4105">
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      </bpmndi:BPMNEdge>
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      </bpmndi:BPMNEdge>
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      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

package com.example.demo.controller;

import org.flowable.engine.HistoryService;
import org.flowable.engine.ProcessEngine;
import org.flowable.engine.RuntimeService;
import org.flowable.engine.TaskService;
import org.flowable.engine.runtime.ProcessInstance;
import org.flowable.task.api.Task;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

@RestController
@RequestMapping("flowable")
public class TestController {

    @Autowired
    private RuntimeService runtimeService;

    @Autowired
    private TaskService taskService;

    @Autowired
    private HistoryService historyService;

    @Autowired
    private ProcessEngine processEngine;




    // 查询流程状态
    @GetMapping("status")
    public boolean statusExpense(String id){
       ProcessInstance processInstance =  processEngine.getRuntimeService().createProcessInstanceQuery()
                .processInstanceId(id).singleResult();
       
       return  processInstance == null; // null 表示流程执行完毕

    }
    // 发起流程
    @GetMapping("add")
    public String addExpense(int input){
        Map<String,Object> map =new  HashMap<>();
        map.put("input",input);
        ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("one",map);
        return "success: " + processInstance.getId();

    }
    //流程处理
    @GetMapping("handle")
    public String handleExpense(String taskId){
        List<Task> tasks = taskService.createTaskQuery().list(); // 查询流程所有的任务
        Map<String,Object> map =new  HashMap<>();
        map.put("input",10);
        taskService.complete(taskId,map); // 处理流程，完结
        return "success: " ;

    }
}

service的作用：

RepositoryService ：1）查询部署和流程定义。2）挂起或者激活流程部署或者流程定义。大多数是处理一些静态信息。

RuntimeService： 1）用来获取和保存流程变量。2）查询流程实例和当前执行位置。3）流程实例需要等待一个外部触发，从而继续进行。

TaskService：1）查询分配给某人或一组的任务。2）产生独立的任务，不依赖于任何流程实例的任务。3）操纵用户分配任务。4）完成任务。

HistoryService ：1）查询各种历史数据

ManagementService：1）查询数据库表信息和表的元数据。2）管理各种 jobs 任务，例如定时器、延迟、挂起