下载工具

官网链接：https://camunda.com/download/modeler/，选择如图，然后下载自己所需要

idea添加外部工具

idea中File -> Settings -> Tools -> External Tools里添加外部工具

开始绘图

右键项目,点击刚刚添加的外部工具

我们使用BPMN格式来绘图

注意右侧参数

提交申请

经理审批

审批条件,排他网关,选中箭头添加条件
字符串:${flag.equals('xxx')}
数字: ${flag==/>/< 数字}
布尔:${flag=false/true}

发送邮件通知

锁定一个java类,flag为false则会进入该类的execute()方法(下面会说)

最后点击画布的空白区域命名id为"studyCamunda",保存另存为该文件至Springboot工程resources/BPMN/study.bpmn20.xml(后缀固定下来)

创建项目

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.5</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.27</version>
        </dependency>
        <!-- camunda -->
        <dependency>
            <groupId>org.camunda.bpm.springboot</groupId>
            <artifactId>camunda-bpm-spring-boot-starter-webapp</artifactId>
            <version>3.4.1</version>
        </dependency>
    </dependencies>

yml

camunda.bpm:
  # 流程引擎name
  process-engine-name: camundaEngine
  # 历史级别
  history-level: full
  # 是否自动部署
  auto-deployment-enabled: false
  id-generator: strong
  deployment-resource-pattern:
    - classpath:BPMN/*.bpmn20.xml
  job-execution:
    enabled: true
  authorization:
    enabled: true
  admin-user:
    id: admin
    password: password


spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    #新建数据库camunda
    url: jdbc:mysql://127.0.0.1:3306/camunda
    username: root
    password: root

启动类需要加一点东西

import org.camunda.bpm.engine.RepositoryService;
import org.camunda.bpm.engine.repository.ProcessDefinition;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import java.util.List;

@SpringBootApplication
public class App implements CommandLineRunner {
    private final Logger logger = LoggerFactory.getLogger(App.class);

    @Autowired
    RepositoryService repositoryService;

    public static void main(String[] args) {
        SpringApplication.run(App.class, args);
    }

    @Override
    public void run(String... args) throws Exception {
        List<ProcessDefinition> processDefinitionList = repositoryService.createProcessDefinitionQuery().active().latestVersion().list();
        logger.info("> 处于激活状态的最新版本的流程定义数量: " + processDefinitionList.size());
        for (ProcessDefinition pd : processDefinitionList) {
            logger.info("\t ===> Process definition: " + pd.getKey() + " 版本：" + pd.getVersion());

        }
    }
}

启动工程 访问localhost8080,可以看到Camunda的控制台了
账号:admin
密码:password

目前笔者已经部署了流程实例，第一次进入应该是没有正在运行的流程的
ok到这里我们的准备工作就做完了,接下来是实战了,会用到tasklistener,sendEmailTask,排他网关,兼容网关,同行网关,下期会详细介绍~

总结

工作流还在用activiti or flowable吗?醒醒,大清亡了