flowable集成springboot

公司工作需要，需要学习flowable流程引擎，本文章为flowable中文手册5.7集成springboot步骤

1.开始

使用idea创建一个springboot项目，然后根据手册添加flowable依赖

<dependency>
    <groupId>org.flowablegroupId>
    <artifactId>flowable-spring-boot-starterartifactId>
    <version>${flowable.version}version>
dependency>

<properties>
    <flowable.version>6.3.0flowable.version>
properties>

然后直接运行启动类，会得到异常提示

指出需要在pom文件中添加数据库驱动依赖,添加H2数据库依赖：

<dependency>
    <groupId>com.h2databasegroupId>
    <artifactId>h2artifactId>
    <version>1.3.176version>
dependency>

此时项目依赖为：

<dependencies>
    <dependency>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starterartifactId>
    dependency>
    <dependency>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-testartifactId>
        <scope>testscope>
    dependency>
    <dependency>
        <groupId>org.flowablegroupId>
        <artifactId>flowable-spring-boot-starterartifactId>
        <version>${flowable.version}version>
    dependency>
    <dependency>
        <groupId>com.h2databasegroupId>
        <artifactId>h2artifactId>
        <version>1.3.176version>
    dependency>
dependencies>

启动，输出为：

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2.添加配置文件

在resources目录下，创建processes目录，在processes目录下创建one-task-process.bpmn20.xml文件（注意文件名不要出错）

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one-task-process.bpmn20.xml

<definitions
        xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
        xmlns:flowable="http://flowable.org/bpmn"
        targetNamespace="Examples">
    <process id="oneTaskProcess" name="The One Task Process">
        <startEvent id="theStart"/>
        <sequenceFlow id="flow1" sourceRef="theStart"
                      targetRef="theTask"/>
        <userTask id="theTask" name="my task"/>
        <sequenceFlow id="flow2" sourceRef="theTask" targetRef="theEnd"
        />
        <endEvent id="theEnd"/>
    process>
definitions>

然后启动类添加下列代码，以测试部署是否生效。CommandLineRunner是一个特殊的Spring bean，在应用启动时执行：

SpringbootApplication.java

import org.flowable.engine.RepositoryService;
import org.flowable.engine.RuntimeService;
import org.flowable.engine.TaskService;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;

@SpringBootApplication
public class SpringbootApplication {
   

    pub