feat(workflow): 实现自定义选择下一个处理人功能
- 在前端增加提示信息,指导用户指定下一个任务的处理人 - 在后端增加逻辑,处理用户选择的下一个处理人 - 修改数据库,增加采购计划详情编号字段- 优化采购计划详情查询条件,支持按详情编号查询
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package com.klp.flowable.utils;
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import org.flowable.engine.RuntimeService;
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import org.flowable.engine.TaskService;
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import org.flowable.task.api.Task;
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import org.springframework.stereotype.Component;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* 下一个处理人选择器
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* 用于处理用户自定义选择下一个处理人的逻辑
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*
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* @author CodeBuddy
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* @since 2025/8/22
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*/
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@Component
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public class NextUserSelector {
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private final TaskService taskService;
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private final RuntimeService runtimeService;
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public NextUserSelector(TaskService taskService, RuntimeService runtimeService) {
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this.taskService = taskService;
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this.runtimeService = runtimeService;
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}
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/**
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* 设置下一个任务的处理人
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*
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* @param taskId 当前任务ID
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* @param nextUserIds 下一个处理人ID,多个用逗号分隔
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*/
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public void setNextTaskUsers(String taskId, String nextUserIds) {
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if (nextUserIds == null || nextUserIds.isEmpty()) {
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return;
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}
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Task task = taskService.createTaskQuery().taskId(taskId).singleResult();
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if (task == null) {
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return;
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}
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// 设置流程变量,在任务完成后传递给下一个任务
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Map<String, Object> variables = new HashMap<>();
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variables.put("nextUserIds", nextUserIds);
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// 更新流程实例变量
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runtimeService.setVariables(task.getExecutionId(), variables);
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}
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/**
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* 获取当前任务的指定处理人
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*
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* @param taskId 任务ID
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* @return 指定的处理人ID,多个用逗号分隔
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*/
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public String getNextTaskUsers(String taskId) {
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Task task = taskService.createTaskQuery().taskId(taskId).singleResult();
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if (task == null) {
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return null;
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}
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Object nextUserIds = runtimeService.getVariable(task.getExecutionId(), "nextUserIds");
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return nextUserIds != null ? nextUserIds.toString() : null;
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}
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}
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