Activiti7初探

刺骨的言语ヽ痛彻心扉 2022-04-24 11:58 524阅读 0赞

**activiti 7.0.0.SR1+springboot 2.0.4.RELEASE**

### 文章目录 ###

*  1、 idea中安装activiti的插件
 *  2、引入依赖
 *  3、画流程的bpmn图，其实就是设计中的活动图
 *  4、25张表
 *  5、核心service
 *  6、启动流程并自动完成第一步
 *  7、节点处理
 *  8、历史查询
 *  9、代办
 *  10、重写用户权限
 *  11、关闭activiti默认的安全校验
 *  12、配置activiti的数据源和线程池
 *  13、其他问题

# 1、 idea中安装activiti的插件 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zNjE0MjA0Mg_size_16_color_FFFFFF_t_70]

# 2、引入依赖 #

<parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.0.4.RELEASE</version>
            <relativePath/> 
        </parent>
    
        <properties>
            <activiti.version>7.0.0.SR1</activiti.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatisplus-spring-boot-starter</artifactId>
                <version>1.0.5</version>
            </dependency>
    
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus</artifactId>
                <version>3.1.0</version>
            </dependency>
    
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.1.16</version>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.35</version>
            </dependency>
    
            <dependency>
                <groupId>org.activiti</groupId>
                <artifactId>activiti-spring-boot-starter</artifactId>
                <version>${activiti.version}</version>
                <exclusions>
                    <exclusion>
                        <groupId>org.activiti.core.common</groupId>
                        <artifactId>activiti-spring-identity</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
        </dependencies>

application.properties中增加配置

#表示启动时检查数据库表，不存在则创建
    spring.activiti.database-schema-update=true
    #表示哪种情况下使用历史表，这里配置为full表示全部记录历史，方便绘制流程图
    spring.activiti.history-level=full
    #true表示使用历史表，如果不配置，则工程启动后可以检查数据库，只建立了17张表
    spring.activiti.db-history-used=true

# 3、画流程的bpmn图，其实就是设计中的活动图 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zNjE0MjA0Mg_size_16_color_FFFFFF_t_70 1]

# 4、25张表 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zNjE0MjA0Mg_size_16_color_FFFFFF_t_70 2]

# 5、核心service #

RuntimeService  
TaskService  
HistoryService  
RepositoryService

# 6、启动流程并自动完成第一步 #

public String startProcess(ProcessDealDto processDealDto) {
    
            ProcessInstance instance = runtimeService.startProcessInstanceByKey(WorkFlowConstant.PROCESS_WORKTICKET_ID);
            //验证是否启动成功
            //通过查询正在运行的流程实例来判断
            ProcessInstanceQuery processInstanceQuery = runtimeService.createProcessInstanceQuery();
            //根据流程实例ID来查询
            List<ProcessInstance> runningList = processInstanceQuery.processInstanceId(instance.getProcessInstanceId()).list();
            logger.debug(LogFormatter.toMsg("start process", "instance"), runningList);
    
            String instanceId = instance.getId();
    
            //设置处理人
            Task task = taskService.createTaskQuery().processInstanceId(instanceId).singleResult();
            if (task != null) {
                //自动完成第一步
    
                Map<String, Object> map = new HashMap<String, Object>(2);
                map.put("check", 1);
                map.put("personId", processDealDto.getPersonId());
                taskService.setAssignee(task.getId(), processDealDto.getCurrentPersonId());
                taskService.complete(task.getId(), map);
    
                task = taskService.createTaskQuery().processInstanceId(instanceId).singleResult();
                taskService.setAssignee(task.getId(), processDealDto.getPersonId());
            } else {
                throw new BusinessException(WorkTaskErrorCode.WORK_TASK_START_PROCESS_ERROR);
            }
    
            // 返回流程ID
            return instanceId;
        }

# 7、节点处理 #

public void auditProcess(ProcessDealDto processDealDto) {
            Task task = null;
            if (ObjectUtils.isNotEmpty(processDealDto.getInstanceId())) {
                task = taskService.createTaskQuery().processInstanceId(processDealDto.getInstanceId()).singleResult();
            } else if (ObjectUtils.isNotEmpty(processDealDto.getTaskId())) {
                task = taskService.createTaskQuery().taskId(processDealDto.getTaskId()).singleResult();
            }
    
            if (task == null) {
                throw new BusinessException(WorkTaskErrorCode.WORK_TASK_BACK_PROCESS_EMPTY_ERROR);
            }
            if (WorkFlowConstant.AUDIT_PASS.equals(processDealDto.getCheck())) {
                dealProcess(task, processDealDto);
            } else {
                backProcess(task, processDealDto);
            }
        }
    
    /**
         * 退回到上一节点
         *
         * @param task
         * @param processDealDto
         */
        private void backProcess(Task task, ProcessDealDto processDealDto) {
    
            List<HistoricTaskInstance> htiList = historyService.createHistoricTaskInstanceQuery()
                    .processInstanceId(processDealDto.getInstanceId())
                    .orderByTaskCreateTime()
                    .desc()
                    .list();
    
            if (ObjectUtils.isEmpty(htiList) || htiList.size() < 2) {
                return;
            }
    
            HistoricTaskInstance myTask = htiList.get(1);
            String myTaskId = myTask.getId();
    
            if (null == myTaskId) {
                throw new BusinessException(WorkTaskErrorCode.WORK_TASK_BACK_PROCESS_USER_ERROR);
            }
    
            String processDefinitionId = myTask.getProcessDefinitionId();
            ProcessDefinitionEntity processDefinitionEntity = (ProcessDefinitionEntity) repositoryService.createProcessDefinitionQuery().processDefinitionId(processDefinitionId).singleResult();
            BpmnModel bpmnModel = repositoryService.getBpmnModel(processDefinitionId);
    
            //变量
    //		Map<String, VariableInstance> variables = runtimeService.getVariableInstances(currentTask.getExecutionId());
            String myActivityId = null;
            List<HistoricActivityInstance> haiList = historyService.createHistoricActivityInstanceQuery()
                    .executionId(myTask.getExecutionId()).finished().list();
            for (HistoricActivityInstance hai : haiList) {
                if (myTaskId.equals(hai.getTaskId())) {
                    myActivityId = hai.getActivityId();
                    break;
                }
            }
            FlowNode myFlowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(myActivityId);
    
    
            Execution execution = runtimeService.createExecutionQuery().executionId(task.getExecutionId()).singleResult();
            String activityId = execution.getActivityId();
    //        logger.warn("------->> activityId:" + activityId);
            FlowNode flowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(activityId);
    
            //记录原活动方向
            List<SequenceFlow> oriSequenceFlows = new ArrayList<SequenceFlow>();
            oriSequenceFlows.addAll(flowNode.getOutgoingFlows());
    
            //清理活动方向
            flowNode.getOutgoingFlows().clear();
            //建立新方向
            List<SequenceFlow> newSequenceFlowList = new ArrayList<SequenceFlow>();
            SequenceFlow newSequenceFlow = new SequenceFlow();
            newSequenceFlow.setId("newSequenceFlowId");
            newSequenceFlow.setSourceFlowElement(flowNode);
            newSequenceFlow.setTargetFlowElement(myFlowNode);
            newSequenceFlowList.add(newSequenceFlow);
            flowNode.setOutgoingFlows(newSequenceFlowList);
    
            Map<String, Object> currentVariables = new HashMap<String, Object>();
            currentVariables.put("check", 0);
            currentVariables.put("dealMsg", processDealDto.getDealMsg());
            currentVariables.put("personId", processDealDto.getPersonId());
            taskService.createAttachment("", task.getId(), processDealDto.getInstanceId(), "dealMsg", processDealDto.getDealMsg(), "");
            //完成任务
            taskService.complete(task.getId(), currentVariables);
            //恢复原方向
            flowNode.setOutgoingFlows(oriSequenceFlows);
    
            Task nextTask = taskService.createTaskQuery().processInstanceId(processDealDto.getInstanceId()).singleResult();
            if(nextTask!=null) {
                taskService.setAssignee(nextTask.getId(), myTask.getAssignee());
            }
        }
    
        /**
         * 正向流程
         *
         * @param task
         * @param processDealDto
         */
        private void dealProcess(Task task, ProcessDealDto processDealDto) {
    
            Map<String, Object> map = new HashMap<String, Object>(2);
            map.put("check", processDealDto.getCheck());
            map.put("personId", processDealDto.getPersonId());
            map.put("dealMsg", processDealDto.getDealMsg());
    
            task.setDescription(WorkFlowStatus.getDescriptionByIndex(processDealDto.getNodeType()));
    
            String taskId = task.getId();
            taskService.createAttachment("", taskId, processDealDto.getInstanceId(), "dealMsg", processDealDto.getDealMsg(), "");
            taskService.complete(taskId, map);
    
            //设置处理人，将流程流转到下一个人
            Task nextTask = taskService.createTaskQuery().processInstanceId(processDealDto.getInstanceId()).singleResult();
    
            if(nextTask!=null) {
                taskService.setAssignee(nextTask.getId(), processDealDto.getPersonId());
            }
        }

# 8、历史查询 #

不显示起始节点和排他网关

public List<ProcessHistoryDto> getHistoryByInstance(String instanceId) {
    
            HistoricActivityInstanceQuery historyInstanceQuery = historyService.createHistoricActivityInstanceQuery().processInstanceId(instanceId);
            // 查询历史节点
            List<HistoricActivityInstance> historicActivityInstanceList = historyInstanceQuery.orderByHistoricActivityInstanceStartTime().asc().list();
            if (ObjectUtils.isNotEmpty(historicActivityInstanceList)) {
                List<ProcessHistoryDto> historyDtos = new ArrayList<>();
    
                Integer lastNodeId = null;
    
                ProcessHistoryDto lastHistoryNode = null;
    
                for (HistoricActivityInstance activityInstance : historicActivityInstanceList) {
                    if(activityInstance.getActivityName().equals("StartEvent") || activityInstance.getActivityName().equals("ExclusiveGateway")){
                        continue;
                    }
    
                    ProcessHistoryDto historyDto = new ProcessHistoryDto();
                    historyDto.setActivitId(activityInstance.getActivityId());
                    historyDto.setDealPersonID(activityInstance.getAssignee());
                    historyDto.setDealTime(activityInstance.getEndTime());
    
                    Integer nowNodeId = WorkFlowNodeEnum.getIndexByName(activityInstance.getActivityId());
                    historyDto.setNodeId(nowNodeId);
                    historyDto.setCheck(true);
                    //判断是否为驳回
                    if(lastNodeId != null && nowNodeId < lastNodeId){
                        lastHistoryNode.setCheck(false);
                    }else if(lastNodeId != null && WorkFlowNodeEnum.WORK_PERMITER_CHECK.getIndex().equals(lastNodeId)
                            && WorkFlowNodeEnum.FINISH.getIndex().equals(nowNodeId)){
                        //从许可人直接驳回
                        lastHistoryNode.setCheck(false);
                    }
    
                    if(!"EndEvent".equals(activityInstance.getActivityName())) {
                        List<Attachment> attachmentList = taskService.getTaskAttachments(activityInstance.getTaskId());
                        if (ObjectUtils.isNotEmpty(attachmentList)) {
                            historyDto.setAttachment(attachmentList.get(0).getDescription());
                        }
    
                        historyDto.setDealPersonName(getPersonNameAndNoById(activityInstance.getAssignee()));
                    }
    
                    lastNodeId = nowNodeId;
                    lastHistoryNode = historyDto;
    
                    //没有结束时间，表示当前正处于该节点，历史中不展示,但是要用这个节点来判断是否是驳回
                    if(ObjectUtils.isEmpty(activityInstance.getEndTime())){
                        continue;
                    }
    
                    historyDtos.add(historyDto);
                }
                return historyDtos;
            }
            return null;
        }

# 9、代办 #

public List<PersonToDoDto> getToDoList(String personId) {
    
            List<Task> list = taskService.createTaskQuery().taskCandidateOrAssigned(personId).list();
            if(ObjectUtils.isNotEmpty(list)){
                List<PersonToDoDto> personToDoDtos = new ArrayList<>();
                for(Task task : list){
                    PersonToDoDto personToDoDto = new PersonToDoDto();
                    personToDoDto.setInstanceId(task.getProcessInstanceId());
                    personToDoDto.setTaskId(task.getId());
                    personToDoDtos.add(personToDoDto);
                }
                return personToDoDtos;
            }
            return null;
        }

# 10、重写用户权限 #

@Service
    public class CustomUserGroupManagerImpl implements UserGroupManager{
    
        public static List<String> roles = new ArrayList<>();
        public static List<String> groups = new ArrayList<>();
        public static List<String> users = new ArrayList<>();
        public static Map<String,String> userRoleMap = new HashMap<>();
        static {
            roles.add("workCreate");
            roles.add("workPermit");
            roles.add("workLeader");
    
            groups.add("workGroupA");
    
            users.add("admin");
            users.add("laowang");
            users.add("xiaofang");
    
            userRoleMap.put("admin", "workCreate");
            userRoleMap.put("laowang", "workPermit");
            userRoleMap.put("xiaofang", "workLeader");
        }
    
        @Override
        public List<String> getUserGroups(String s) {
    
            return groups;
        }
    
        @Override
        public List<String> getUserRoles(String s) {
            String role = userRoleMap.get(s);
            List<String> list = new ArrayList<>();
            list.add(role);
            return list;
        }
    
        @Override
        public List<String> getGroups() {
            return groups;
        }
    
        @Override
        public List<String> getUsers() {
            return users;
        }
    }

# 11、关闭activiti默认的安全校验 #

启动类上添加注解

@EnableAutoConfiguration(exclude = {org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration.class})

@Configuration
    public class SecurityConfig extends WebSecurityConfigurerAdapter {
    
        @Override
        protected void configure(HttpSecurity http) throws Exception {
            http.authorizeRequests().anyRequest().permitAll().and().logout().permitAll();
        }
    }

# 12、配置activiti的数据源和线程池 #

@Configuration
    public class WorkFlowConfiguration{
    
    @Autowired
    private UserGroupManager userGroupManager;
    
        @Autowired
        private DataSource dataSource;
    
        private int corePoolSize = 10;
        private int maxPoolSize = 30;
        private int keepAliveSeconds = 300;
        private int queueCapacity = 300;
    
        @Bean
        public SpringProcessEngineConfiguration springProcessEngineConfiguration(
                PlatformTransactionManager transactionManager) throws IOException {
    
            SpringProcessEngineConfiguration configuration = new SpringProcessEngineConfiguration();
            configuration.setDataSource(dataSource);
            configuration.setTransactionManager(transactionManager);
            SpringAsyncExecutor asyncExecutor = new SpringAsyncExecutor();
            asyncExecutor.setTaskExecutor(workFlowAsync());
            configuration.setAsyncExecutor(asyncExecutor);
    
            configuration.setDatabaseSchemaUpdate("true");
            configuration.setUserGroupManager(userGroupManager);
            configuration.setHistoryLevel(HistoryLevel.FULL);
            configuration.setDbHistoryUsed(true);
            return configuration;
        }
    
        @Primary
        @Bean("workFlowTaskExecutor")
        public ThreadPoolTaskExecutor workFlowAsync() {
            ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
            executor.setCorePoolSize(corePoolSize);
            executor.setMaxPoolSize(maxPoolSize);
            executor.setKeepAliveSeconds(keepAliveSeconds);
            executor.setQueueCapacity(queueCapacity);
            executor.setThreadNamePrefix("workFlowTaskExecutor-");
            executor.initialize();
            return executor;
        }
    
    
    }

# 13、其他问题 #

有时候发现application.properties中的配置不起作用

@Configuration
    public class InitConfigTest implements CommandLineRunner {
    
        @Autowired
        private ProcessEngine processEngine;
    
        @Override
        public void run(String... args) throws Exception {
            Deployment deployment = processEngine.getRepositoryService()
                    .createDeployment()
                    .name("workTask")
                    .addClasspathResource("processes/workTask.bpmn")
    //                .addClasspathResource("repository/TestProcess.png")
                    .deploy();
        }
    }

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