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1、前加签插件

package com.xxx.flowable.cmd;import com.xxx.auth.security.user.SecurityUser;
import com.xxx.commons.ApplicationContextHolder;
import com.google.common.collect.Lists;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.flowable.common.engine.impl.interceptor.CommandContext;
import org.flowable.engine.TaskService;
import org.flowable.engine.impl.cmd.NeedsActiveTaskCmd;
import org.flowable.task.service.impl.persistence.entity.TaskEntity;
import org.flowable.task.service.impl.persistence.entity.TaskEntityImpl;import java.util.*;/**** @author HanKeQi* @date 2023/9/25*/
public class BeforeDelegateTaskCmd extends NeedsActiveTaskCmd<Void> {private List<String> assignees;public BeforeDelegateTaskCmd(String taskId, Set<String> assignees) {super(taskId);this.assignees = Lists.newArrayList(assignees);}@Overrideprotected Void execute(CommandContext commandContext, TaskEntity taskEntity) {if (CollectionUtils.isNotEmpty(this.assignees)){// 根据自己方法回去beanTaskService taskService = ApplicationContextHolder.getBean(TaskService.class);assert taskService != null;TaskEntityImpl currentTask = (TaskEntityImpl)taskEntity;String parentTaskId = currentTask.getParentTaskId();//获取当前操作人，也可以传入String userId = SecurityUser.getUserId();if (StringUtils.isEmpty(parentTaskId)){currentTask.setOwner(userId);currentTask.setAssignee(null);currentTask.setCountEnabled(true);currentTask.setScopeType("before");taskService.saveTask(taskEntity);parentTaskId = taskEntity.getId();}for (String assignee: this.assignees) {String uuid = UUID.randomUUID().toString();TaskEntity task = (TaskEntity)taskService.newTask(uuid);task.setCategory(currentTask.getCategory());task.setDescription(currentTask.getDescription());task.setTenantId(currentTask.getTenantId());task.setOwner(userId);task.setAssignee(assignee);
//                task.setExecutionId(currentTask.getExecutionId());task.setName(String.format("加签%s", currentTask.getName()));task.setParentTaskId(currentTask.getId());task.setProcessDefinitionId(currentTask.getProcessDefinitionId());task.setProcessInstanceId(currentTask.getProcessInstanceId());task.setTaskDefinitionKey(String.format("dy_%s", currentTask.getTaskDefinitionKey()));
//                task.setPriority(currentTask.getPriority());task.setCreateTime(new Date());task.setStatus(currentTask.getStatus());task.setItemCode(currentTask.getItemCode());task.setApproveType(currentTask.getApproveType());task.setBussId(currentTask.getBussId());task.setBussName(currentTask.getBussName());taskService.saveTask(task);}//如果是候选人，需要删除运行时候选表种的数据。long candidateCount = taskService.createTaskQuery().taskId(parentTaskId).taskCandidateUser(userId).count();if (candidateCount > 0) {taskService.deleteCandidateUser(parentTaskId, userId);}}return null;}}

2、Controller 处理

package com.xxx.flowable.controller;import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.flowable.engine.TaskService;
import org.flowable.task.api.Task;
import org.springframework.util.CollectionUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import java.util.List;
import java.util.Set;/*** @author HanKeQi* @date 2023/9/28*/
@Slf4j
@RestController
@AllArgsConstructor
@RequestMapping("flowable/test")
public class Test001Controller {private final TaskService taskService;@PostMappingpublic String submit(String taskId, Set<String> assignees){Task task = taskService.createTaskQuery().taskId(taskId).singleResult();Task parentTask = null;String parentTaskId = task.getParentTaskId();if (StringUtils.isNotEmpty(parentTaskId)){parentTask = taskService.createTaskQuery().taskId(parentTaskId).singleResult();List<Task> subTasks = taskService.getSubTasks(parentTaskId);//处理最后一个的时候，一定要把任务返还给加签人if (!CollectionUtils.isEmpty(subTasks) && subTasks.size() == 1) {taskService.resolveTask(parentTaskId);}}//如果要获取变量请使用parentTask 获取传输变量return "ok";}
}