SpringBoot集成activiti工作流

淩亂°似流年 2022-12-20 08:41 311阅读 0赞

### SpringBoot集成activiti工作流(模拟请假流程) ###

链接：https://pan.baidu.com/s/10BT\_Zertm1WBBrlrdE-QWQ   
提取码：zsq6

学习视频地址见腾讯课堂 :   [https://ke.qq.com/course/459167][https_ke.qq.com_course_459167]

其他代码都是最原始的测试activiti 的api代码,整合springboot的所有代码见下图.  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW5nc2hlbmdxaWFuZzE2OA_size_16_color_FFFFFF_t_70][]

### 1.pom文件 ###

<dependency>
                <groupId>org.activiti</groupId>
                <artifactId>activiti-spring-boot-starter-basic</artifactId>
                <version>5.22.0</version>
            </dependency>

### 2.配置文件 ###

#===server 端口号配置===
    server.port=8090
    #数据源配置
    spring.datasource.url=jdbc:mysql://127.0.0.1:3306/activiti?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&serverTimezone=Asia/Shanghai
    spring.datasource.username=root
    spring.datasource.password=root
    
    # 使用druid数据源
    spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
    #驱动com.mysql.cj.jdbc.Driver
    spring.datasource.driver-class-name=com.mysql.jdbc.Driver
    #连接池初始化数量
    spring.datasource.druid.initial-size=5
    #最小空闲连接数
    spring.datasource.druid.min-idle=10
    #最大连接数
    spring.datasource.druid.max-active=2000
    #获取连接等待超时时间
    spring.datasource.druid.max-wait=60000
    #间隔多久进行一次检测，检测需要关闭的空闲连接
    spring.datasource.druid.time-between-eviction-runs-millis=60000
    
    # Activiti配置
    ## 自动构建Activiti数据库表,设置value="true",启动时检测,无表创建,有表跳过;设置value="drop-create"
    ## 每次启动时建新表(Springboot1.x中生效,Springboot2.x中已经不生效,因此关闭)
    #spring.activiti.database-schema-update=true
    ## Activiti自动部署验证设置,:true-开启(默认)、false-关闭
    spring.activiti.check-process-definitions=false
    ## 设置true后将代替那些老的Job executor
    spring.activiti.async-executor-enabled=false
    ## Activiti定时扫描任务,默认:true(开启),不使用的话建议关掉,需要和spring.activiti.async-executor-enabled=false配合使用,否则不起作用
    spring.activiti.job-executor-activate=false
    #spring.activiti.process-definition-location-prefix=classpath:/processes/
    #spring.activiti.process-definition-location-suffixes=**.bpmn
    
    #===mybatis 配置===
    # 注意：一定要对应mapper映射xml文件的所在路径
    mybatis.mapper-locations=classpath*:mapper/*.xml
    # Mybatis SQL语句控制台打印
    mybatis.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl
    #开启驼峰命名  譬如数据库create_time 自动映射pojo属性createTime
    mybatis.configuration.map-underscore-to-camel-case=true

### 3.启动类排除掉权限SecurityAutoConfiguration类,不然启动失败.报找不着这个类的问题 ###

@SpringBootApplication(exclude = org.activiti.spring.boot.SecurityAutoConfiguration.class)
    public class ActivitiDemoApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(ActivitiDemoApplication.class, args);
        }
    
    }

### 4.启动成功便已经创建好了activiti的表 ###

### 5.画流程图 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW5nc2hlbmdxaWFuZzE2OA_size_16_color_FFFFFF_t_70 1][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW5nc2hlbmdxaWFuZzE2OA_size_16_color_FFFFFF_t_70 2][]

其他连线依次设置即可

### 设置办理人,使用监听器监听设置办理人,新建TaskListenerImpl 类实现 TaskListener ###

public class TaskListenerImpl implements TaskListener {
        @Override
        public void notify(DelegateTask delegateTask) {
            //====流程模拟====
            //1.得到当前用户
            String name="小王";
            //2.取出领导id
            String id="5";
            //3.查询领导信息
            String leader="小李";
            //4.设置办理人
            delegateTask.setAssignee(leader);
        }
    }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW5nc2hlbmdxaWFuZzE2OA_size_16_color_FFFFFF_t_70 3][]

### 画好流程图压缩成zip包待使用,Controller 接口 ###

@RestController("/workFlow")
    @Api(tags = "测试activiti",description = "LeaveBillConttroller")
    public class LeaveBillConttroller {
    
        @Autowired
        private LeaveBillService leaveBillService;
    
        @ApiOperation("查询流程部署")
        @GetMapping(value = "/queryProcessDeploy")
        public List<ActDeployment> queryProcessDeploy(WorkFlowVo workFlowVo){
            return leaveBillService.queryProcessDeploy(workFlowVo);
        }
    
        @ApiOperation("查询流程定义")
        @GetMapping(value = "/queryAllProcessDefinition")
        public  List<ActProcessDefinition> queryAllProcessDefinition(WorkFlowVo workFlowVo){
            return leaveBillService.queryAllProcessDefinition(workFlowVo);
        }
    
        @ApiOperation("添加流程部署")
        @PostMapping(value = "/addWorkFlow")
        public Map<String ,Object> addWorkFlow(MultipartFile file ,WorkFlowVo workFlowVo) throws IOException {
            leaveBillService.addWorkFlow(file.getInputStream(),workFlowVo.getDeploymentName());
            return null;
        }
    
        @ApiOperation("删除流程部署")
        @PostMapping(value = "/deleteWorkFlow")
        public Map<String ,Object> deleteWorkFlow(WorkFlowVo workFlowVo) throws IOException {
            leaveBillService.deleteWorkFlow(workFlowVo.getDeploymentId());
            return null;
        }
    
        @ApiOperation("流程部署id查看流程图")
        @PostMapping(value = "/viewProcessImage")
        public void viewProcessImage(WorkFlowVo workFlowVo, HttpServletResponse response) throws IOException {
            leaveBillService.viewProcessImage(workFlowVo.getDeploymentId(),response);
        }
    
        @ApiOperation("提交申请,启动流程")
        @PostMapping(value = "/startProcess")
        public void startProcess(WorkFlowVo workFlowVo) throws IOException {
            leaveBillService.startProcess(workFlowVo);
        }
    
        @ApiOperation("查询当前登录人的待办任务")
        @GetMapping(value = "/loadCurrentUserTask")
        public List<ActTask> loadCurrentUserTask(WorkFlowVo workFlowVo) throws IOException {
            return leaveBillService.loadCurrentUserTask(workFlowVo);
        }
    
        @ApiOperation("根据任务id查询业务id和连线")
        @GetMapping(value = "/toDoTask")
        public Map<String ,Object> toDoTask(WorkFlowVo workFlowVo) throws IOException {
            Leavebill leavebill=leaveBillService.toDoTask(workFlowVo.getTaskId());
            List<String> outComeName=leaveBillService.queryOutComes(workFlowVo.getTaskId());
    
            Map map=new HashMap();
            map.put("leavebill",leavebill);
            map.put("outComeName",outComeName);
            return null;
        }
    
        @ApiOperation("根据任务id查询批注信息")
        @GetMapping(value = "/loadAllCommentByTaskId")
        public List<ActComment> loadAllCommentByTaskId(WorkFlowVo workFlowVo) throws IOException {
            return leaveBillService.loadAllCommentByTaskId(workFlowVo.getTaskId());
        }
    
        @ApiOperation("完成任务")
        @GetMapping(value = "/doTask")
        public Map<String ,Object> doTask(WorkFlowVo workFlowVo, HttpServletRequest request) throws IOException {
            return leaveBillService.completeTask(workFlowVo);
    
        }
    }

### 实现类的方法 ###

@Service
    public class LeaveBillService {
    
        @Autowired
        private TaskService taskService;
    
        @Autowired
        private RuntimeService runtimeService;
    
        @Autowired
        private RepositoryService repositoryService;
    
        //查询流程部署
        public List<ActDeployment>queryProcessDeploy(WorkFlowVo workFlowVo){
            if(workFlowVo.getDeploymentName()==null){
                workFlowVo.setDeploymentName("");
            }
            String name=workFlowVo.getDeploymentName();
            long count = repositoryService.
                    createDeploymentQuery().deploymentNameLike("%"+name+"%").count();
            List<Deployment> deployments = repositoryService.createDeploymentQuery().deploymentNameLike("%"+name+"%")
                    .listPage(0, 10);
            List<ActDeployment> actDeployments=new ArrayList<>();
            for (Deployment deployment :deployments){
                ActDeployment actDeployment=new ActDeployment();
                BeanUtils.copyProperties(deployment,actDeployment);
                actDeployments.add(actDeployment);
            }
            return actDeployments;
        }
    
        //查询流程定义
        public  List<ActProcessDefinition> queryAllProcessDefinition(WorkFlowVo workFlowVo){
            if(workFlowVo.getDeploymentName()==null){
                workFlowVo.setDeploymentName("");
            }
            String name=workFlowVo.getDeploymentName();
    
            List<Deployment> deployments =
                    repositoryService.createDeploymentQuery().deploymentNameLike("%"+name+"%").list();
            Set<String> deploymentIds=new HashSet<>();
            for (Deployment deployment :deployments){
                deploymentIds.add(deployment.getId());
            }
            List<ProcessDefinition> list = repositoryService.createProcessDefinitionQuery()
                    .deploymentIds(deploymentIds).list();
    
            List<ActProcessDefinition> actProcessDefinitions=new ArrayList<>();
            for (ProcessDefinition definition :list){
                ActProcessDefinition actProcessDefinition=new ActProcessDefinition();
                BeanUtils.copyProperties(definition,actProcessDefinition);
                actProcessDefinitions.add(actProcessDefinition);
            }
            return actProcessDefinitions;
        }
    
        //添加流程部署
        @Transactional
        public void addWorkFlow(InputStream inputStream, String deployMentName) throws IOException {
            //流程部署 ,获取流程部署对象
            ZipInputStream zipInputStream = new ZipInputStream(inputStream);
            Deployment deploy = repositoryService.createDeployment().name(deployMentName)
                    .addZipInputStream(zipInputStream)
                    .deploy();
            inputStream.close();
            zipInputStream.close();
            System.err.println("流程部署完成");
        }
    
        //删除流程部署
        @Transactional
        public void deleteWorkFlow(String deploymentId) {
            //根据流程部署id删除,如果当前id的流程正在执行,那么会报错
            repositoryService.deleteDeployment(deploymentId);
            //根据流程部署id删除,删除流程定义,如果当前id流程正在执行,那么会把正在执行的流程数据删除 act_ru_*和act_hi_*表里的数据
            //repositoryService.deleteDeployment(deploymentId,true);
            System.err.println("删除流程部署完成");
        }
    
        //流程部署id查看流程图
        public void viewProcessImage(String deploymentId, HttpServletResponse response) throws IOException {
            //根据部署id查询流程定义对象
            ProcessDefinition definition = repositoryService
                    .createProcessDefinitionQuery().deploymentId(deploymentId).singleResult();
            //从流程定义里面得到图片的名称
            String resourceName = definition.getDiagramResourceName();
            //使用部署id和图片名称去查询图片流
            InputStream inputStream = repositoryService.
                                getResourceAsStream(deploymentId, resourceName);
            //写出图片
            File file = new File("C://abc.jpeg");
            FileOutputStream fos = new FileOutputStream(file);
                byte[] b = new byte[1024];
                int length;
                while ((length = inputStream.read(b)) != -1) {
                    fos.write(b, 0, length);
                }
            inputStream.close();
        }
    
        /**
         * 提交申请,启动流程
         *
         */
        @Transactional
        public void startProcess(WorkFlowVo workFlowVo) {
            //模拟入库提交请假申请,返回请假id
            Integer leavebillId = workFlowVo.getId();
            //找到流程的key
            String processDefinitionKey = Leavebill.class.getSimpleName();
            String businessKey=processDefinitionKey+":"+leavebillId;
            Map<String,Object> variables=new HashMap<>();
            //请假人
            variables.put("username",workFlowVo.getUsername());
            runtimeService.startProcessInstanceByKey
                    (processDefinitionKey,businessKey,variables);
            System.err.println("提交申请,启动流程成功");
            //todo 修改请假状态
        }
    
        /**
         * 查询当前登录人的待办任务
         */
        public List<ActTask> loadCurrentUserTask(WorkFlowVo workFlowVo) {
            String username = workFlowVo.getUsername(); //当前登录用户
            long count=taskService.createTaskQuery().taskAssignee(username).count();
            List<Task> taskList =
                    taskService.createTaskQuery().taskAssignee(username).listPage(0, 10);
            List<ActTask> actTaskList=new ArrayList<>();
            for (Task task :taskList){
                ActTask actTask=new ActTask();
                BeanUtils.copyProperties(task,actTask);
                actTaskList.add(actTask);
            }
            return actTaskList;
        }
    
        //根据任务id查询业务信息
        public Leavebill toDoTask(String taskId) {
            //根据任务id查询任务实例
            Task task = taskService.createTaskQuery().taskId(taskId).singleResult();
            //任务实例中取出流程实例id
            String processInstanceId = task.getProcessInstanceId();
            //根据流程实例id查询流程实例
            ProcessInstance processInstance = runtimeService.createProcessInstanceQuery()
                    .processInstanceId(processInstanceId).singleResult();
            //取出business_key ,拆分获取业务id,并查询业务信息
            String businessKey = processInstance.getBusinessKey();
            String id = businessKey.split(":")[1];
            Leavebill leavebill=new Leavebill();
            leavebill.setId(Integer.valueOf(id));
            return leavebill;
    
        }
    
        //根据任务id查询连线信息
        public List<String> queryOutComes(String taskId) {
            List<String> names=new ArrayList<>();
            //1.根据任务id查询任务实例
            Task task = taskService.createTaskQuery().taskId(taskId).singleResult();
            //2.取出流程定义id
            String processDefinitionId = task.getProcessDefinitionId();
            //3.取出流程实例id
            String processInstanceId = task.getProcessInstanceId();
            //4.根据流程实例id查询流程实例
            ProcessInstance processInstance = runtimeService.createProcessInstanceQuery()
                    .processInstanceId(processInstanceId).singleResult();
            //5.根据流程定义id查询流程定义的xml信息
            ProcessDefinitionEntity processDefinition =
                    (ProcessDefinitionEntity)repositoryService.getProcessDefinition(processDefinitionId);
            //6.从流程实例对象取出当前活动节点id
            String activityId = processInstance.getActivityId();
            //7.根据活动节点id取出xml和当前活动节点相关数据
            ActivityImpl activityImpl = processDefinition.findActivity(activityId);
            //8.从activityImpl中取出连线对象
            List<PvmTransition> incomingTransitions = activityImpl.getIncomingTransitions(); //进入的线
            List<PvmTransition> transitions = activityImpl.getOutgoingTransitions(); //出去的线
            if(!CollectionUtils.isEmpty(transitions)){
                for (PvmTransition trans : transitions) {
                    String name = trans.getProperty("name").toString();
                    names.add(name);
                }
            }
            return names;
        }
    
        /**
         * 根据任务id查询批注信息
         */
        public List<ActComment> loadAllCommentByTaskId(String taskId) {
            Task task = taskService.createTaskQuery().taskId(taskId).singleResult();
            String processInstanceId = task.getProcessInstanceId();
            List<Comment> commentList =
                    taskService.getProcessInstanceComments(processInstanceId);
            List<ActComment> actCommentList=new ArrayList<>();
            for (Comment comment :commentList){
                ActComment actComment=new ActComment();
                BeanUtils.copyProperties(comment,actComment);
                actCommentList.add(actComment);
            }
            return actCommentList;
        }
    
        /**
         * 完成任务
         */
        @Transactional
        public Map<String, Object> completeTask(WorkFlowVo workFlowVo) {
            String taskId = workFlowVo.getTaskId(); //任务id
            String outCome = workFlowVo.getOutCome(); //连接名称
            Integer id = workFlowVo.getId(); //请假单id
            String comment = workFlowVo.getComment(); //批注信息
            String username = workFlowVo.getUsername(); //用户名
            //根据任务id查询任务实例
            Task task = taskService.createTaskQuery().taskId(taskId).singleResult();
            //从任务中取出流程实例id
            String processInstanceId = task.getProcessInstanceId();
            //设置批注人名 因为批注人使用线程局部变量设置,故批注人必须这样设置
            Authentication.setAuthenticatedUserId(username);
            //添加批注信息
            taskService.addComment(taskId,processInstanceId,comment);
            //完成任务
            Map<String,Object> variables=new HashMap<>();
            variables.put("coutcome",outCome);
            taskService.complete(taskId,variables);
            //判断任务是否结束
            ProcessInstance processInstance = runtimeService.
                    createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
            if(processInstance==null){
                Leavebill leavebill=new Leavebill();
                leavebill.setId(id);
                if(outCome.equals("放弃")){
                    leavebill.setState(3); //放弃
                }else {
                    leavebill.setState(2); //审批完成
                }
                //todo 模拟修改数据库请假单状态
            }
            return null;
        }
    
    }

### 其中,返回的activiti5.22返回的实体是会报错的,所以要把它返回的实体参数再封装一层成自己的返回 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW5nc2hlbmdxaWFuZzE2OA_size_16_color_FFFFFF_t_70 4][]

[https_ke.qq.com_course_459167]: https://ke.qq.com/course/459167
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