!1280 fix: 解决审批节点表单无可编辑字段时,variables流程变量值为空,流程节点流转异常问题
Merge pull request !1280 from SamllNorth_Lee/feature/bpm
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commit
4e2ebe0c66
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@ -21,6 +21,7 @@ import org.flowable.bpmn.converter.BpmnXMLConverter;
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import org.flowable.bpmn.model.Process;
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import org.flowable.bpmn.model.Process;
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import org.flowable.bpmn.model.*;
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import org.flowable.bpmn.model.*;
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import org.flowable.common.engine.api.FlowableException;
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import org.flowable.common.engine.api.FlowableException;
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import org.flowable.common.engine.impl.javax.el.PropertyNotFoundException;
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import org.flowable.common.engine.impl.util.io.BytesStreamSource;
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import org.flowable.common.engine.impl.util.io.BytesStreamSource;
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import org.flowable.engine.impl.el.FixedValue;
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import org.flowable.engine.impl.el.FixedValue;
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@ -907,17 +908,9 @@ public class BpmnModelUtils {
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* @return 符合条件的路径
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* @return 符合条件的路径
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*/
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*/
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private static SequenceFlow findMatchSequenceFlowByExclusiveGateway(Gateway gateway, Map<String, Object> variables) {
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private static SequenceFlow findMatchSequenceFlowByExclusiveGateway(Gateway gateway, Map<String, Object> variables) {
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// TODO 表单无可编辑字段时variables为空,流程走向会出现问题,比如流程审批过程中无需要修改的字段值,
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SequenceFlow matchSequenceFlow = CollUtil.findOne(gateway.getOutgoingFlows(),
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// TODO @小北:是不是还是保证,编辑的时候,如果计算下一个节点,还是 variables 是完整体?而不是空的!!!(可以微信讨论下)
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SequenceFlow matchSequenceFlow;
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if (CollUtil.isNotEmpty(variables)) {
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matchSequenceFlow = CollUtil.findOne(gateway.getOutgoingFlows(),
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flow -> ObjUtil.notEqual(gateway.getDefaultFlow(), flow.getId())
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flow -> ObjUtil.notEqual(gateway.getDefaultFlow(), flow.getId())
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&& (evalConditionExpress(variables, flow.getConditionExpression())));
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&& (evalConditionExpress(variables, flow.getConditionExpression())));
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} else {
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matchSequenceFlow = CollUtil.findOne(gateway.getOutgoingFlows(),
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flow -> ObjUtil.notEqual(gateway.getDefaultFlow(), flow.getId()));
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}
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if (matchSequenceFlow == null) {
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if (matchSequenceFlow == null) {
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matchSequenceFlow = CollUtil.findOne(gateway.getOutgoingFlows(),
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matchSequenceFlow = CollUtil.findOne(gateway.getOutgoingFlows(),
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flow -> ObjUtil.equal(gateway.getDefaultFlow(), flow.getId()));
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flow -> ObjUtil.equal(gateway.getDefaultFlow(), flow.getId()));
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@ -1014,6 +1007,11 @@ public class BpmnModelUtils {
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Object result = FlowableUtils.getExpressionValue(variables, expression);
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Object result = FlowableUtils.getExpressionValue(variables, expression);
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return Boolean.TRUE.equals(result);
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return Boolean.TRUE.equals(result);
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} catch (FlowableException ex) {
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} catch (FlowableException ex) {
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// TODO @芋艿 临时方案解决流程变量中不包含条件表达式时报错问题,如果expression 的计算,可能不依赖于 variables,getExpressionValue方法应该需要重构
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if (ex.getCause() instanceof PropertyNotFoundException){
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log.error("[evalConditionExpress][条件表达式({}) 变量({}) 解析报错]", expression, variables, ex);
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return Boolean.FALSE;
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}
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// 为什么使用 info 日志?原因是,expression 如果从 variables 取不到值,会报错。实际这种情况下,可以忽略
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// 为什么使用 info 日志?原因是,expression 如果从 variables 取不到值,会报错。实际这种情况下,可以忽略
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log.info("[evalConditionExpress][条件表达式({}) 变量({}) 解析报错]", expression, variables, ex);
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log.info("[evalConditionExpress][条件表达式({}) 变量({}) 解析报错]", expression, variables, ex);
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return Boolean.FALSE;
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return Boolean.FALSE;
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@ -248,16 +248,15 @@ public class BpmModelServiceImpl implements BpmModelService {
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throw exception(MODEL_DEPLOY_FAIL_BPMN_USER_TASK_NAME_NOT_EXISTS, userTask.getId());
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throw exception(MODEL_DEPLOY_FAIL_BPMN_USER_TASK_NAME_NOT_EXISTS, userTask.getId());
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}
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}
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});
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});
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// TODO @小北:是不是可以 UserTask firUserTask = CollUtil.get(userTasks, BpmModelTypeEnum.BPMN.getType().equals(type) ? 0 : 1);然后,最好判空。。。极端情况下,没 usertask ,哈哈哈哈。
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// 3. 校验第一个用户任务节点的规则类型是否为“审批人自选”,BPMN 设计器,校验第一个用户任务节点,SIMPLE 设计器,第一个节点固定为发起人所以校验第二个用户任务节点
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// 3. 校验第一个用户任务节点的规则类型是否为“审批人自选”
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UserTask firUserTask = CollUtil.get(userTasks, BpmModelTypeEnum.BPMN.getType().equals(type) ? 0 : 1);
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Map<Integer, UserTask> userTaskMap = new HashMap<>();
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// 4. 极端情况下无多个用户任务节点,比如发起人-抄送节点
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// BPMN 设计器,校验第一个用户任务节点
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if (firUserTask == null){
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userTaskMap.put(BpmModelTypeEnum.BPMN.getType(), userTasks.get(0));
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return;
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// SIMPLE 设计器,第一个节点固定为发起人所以校验第二个用户任务节点
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}
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userTaskMap.put(BpmModelTypeEnum.SIMPLE.getType(), userTasks.get(1));
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Integer candidateStrategy = parseCandidateStrategy(firUserTask);
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Integer candidateStrategy = parseCandidateStrategy(userTaskMap.get(type));
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if (Objects.equals(candidateStrategy, BpmTaskCandidateStrategyEnum.APPROVE_USER_SELECT.getStrategy())) {
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if (Objects.equals(candidateStrategy, BpmTaskCandidateStrategyEnum.APPROVE_USER_SELECT.getStrategy())) {
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throw exception(MODEL_DEPLOY_FAIL_FIRST_USER_TASK_CANDIDATE_STRATEGY_ERROR, userTaskMap.get(type).getName());
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throw exception(MODEL_DEPLOY_FAIL_FIRST_USER_TASK_CANDIDATE_STRATEGY_ERROR, firUserTask.getName());
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}
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}
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}
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}
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@ -557,11 +557,24 @@ public class BpmTaskServiceImpl implements BpmTaskService {
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// 2.2 添加评论
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// 2.2 添加评论
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taskService.addComment(task.getId(), task.getProcessInstanceId(), BpmCommentTypeEnum.APPROVE.getType(),
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taskService.addComment(task.getId(), task.getProcessInstanceId(), BpmCommentTypeEnum.APPROVE.getType(),
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BpmCommentTypeEnum.APPROVE.formatComment(reqVO.getReason()));
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BpmCommentTypeEnum.APPROVE.formatComment(reqVO.getReason()));
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// 2.3 校验并处理 APPROVE_USER_SELECT 当前审批人,选择下一节点审批人的逻辑
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// 如果流程变量前端传空,需要从历史实例中获取,原因:前端表单如果在当前节点无可编辑的字段时variables一定会为空
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Map<String, Object> variables = validateAndSetNextAssignees(task.getTaskDefinitionKey(), reqVO.getVariables(),
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// 场景一:A节点发起,B节点表单无可编辑字段,审批通过时,C节点需要流程变量获取下一个执行节点,但因为B节点无可编辑的字段,variables为空,流程可能出现问题
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// 场景二:A节点发起,B节点只有某一个字段可编辑(比如day),但C节点需要多个节点(比如workday,在发起时填写,因为B节点只有day的编辑权限,在审批后。variables会缺少work的值)
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// 3.1 设置流程变量
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Map<String, Object> processVariables = new HashMap<>();
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// 3.2 获取历史中流程变量
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if (CollUtil.isNotEmpty(instance.getProcessVariables())) {
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processVariables.putAll(instance.getProcessVariables());
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}
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// 3.3 合并前端传递的流程变量,以前端为准
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if (CollUtil.isNotEmpty(reqVO.getVariables())) {
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processVariables.putAll(reqVO.getVariables());
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}
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// 3.4 校验并处理 APPROVE_USER_SELECT 当前审批人,选择下一节点审批人的逻辑
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Map<String, Object> variables = validateAndSetNextAssignees(task.getTaskDefinitionKey(), processVariables,
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bpmnModel, reqVO.getNextAssignees(), instance);
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bpmnModel, reqVO.getNextAssignees(), instance);
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runtimeService.setVariables(task.getProcessInstanceId(), variables);
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runtimeService.setVariables(task.getProcessInstanceId(), variables);
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// 2.4 调用 BPM complete 去完成任务
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// 4 调用 BPM complete 去完成任务
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taskService.complete(task.getId(), variables, true);
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taskService.complete(task.getId(), variables, true);
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// 【加签专属】处理加签任务
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// 【加签专属】处理加签任务
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@ -600,9 +613,7 @@ public class BpmTaskServiceImpl implements BpmTaskService {
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}
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}
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processVariables = FlowableUtils.getStartUserSelectAssignees(processInstance.getProcessVariables());
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processVariables = FlowableUtils.getStartUserSelectAssignees(processInstance.getProcessVariables());
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// 特殊:如果当前节点已经存在审批人,则不允许覆盖
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// 特殊:如果当前节点已经存在审批人,则不允许覆盖
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// TODO @小北:【不用改】通过 if return,让逻辑更简洁一点;虽然会多判断一次 processVariables,但是 if else 层级更少。
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if (processVariables != null && CollUtil.isNotEmpty(processVariables.get(nextFlowNode.getId()))) {
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if (processVariables != null
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&& CollUtil.isNotEmpty(processVariables.get(nextFlowNode.getId()))) {
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continue;
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continue;
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}
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}
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// 设置 PROCESS_INSTANCE_VARIABLE_START_USER_SELECT_ASSIGNEES
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// 设置 PROCESS_INSTANCE_VARIABLE_START_USER_SELECT_ASSIGNEES
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@ -622,13 +633,6 @@ public class BpmTaskServiceImpl implements BpmTaskService {
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processVariables = FlowableUtils.getApproveUserSelectAssignees(processInstance.getProcessVariables());
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processVariables = FlowableUtils.getApproveUserSelectAssignees(processInstance.getProcessVariables());
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if (processVariables == null) {
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if (processVariables == null) {
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processVariables = new HashMap<>();
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processVariables = new HashMap<>();
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} else {
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List<Long> approveUserSelectAssignee = processVariables.get(nextFlowNode.getId());
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// 特殊:如果当前节点已经存在审批人,则不允许覆盖
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// TODO @小北:这种,应该可以覆盖呢。
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if (CollUtil.isNotEmpty(approveUserSelectAssignee)) {
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continue;
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}
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}
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}
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// 设置 PROCESS_INSTANCE_VARIABLE_APPROVE_USER_SELECT_ASSIGNEES
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// 设置 PROCESS_INSTANCE_VARIABLE_APPROVE_USER_SELECT_ASSIGNEES
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processVariables.put(nextFlowNode.getId(), assignees);
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processVariables.put(nextFlowNode.getId(), assignees);
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