yxk-20260506-自定义流程表达式：

1、saveCurrentTaskAssigneeLocal保存当前节点办理人到子流程的局部变量中去 2、getSonProcessVariableString获取子流程变量，返回类型是String
2026-05-03 12:08:48 +08:00
parent 876af1c706
commit 99f33801e9
1 changed files with 44 additions and 0 deletions
@@ -8,6 +8,7 @@ import org.apache.commons.lang.StringUtils;
 import org.flowable.engine.RuntimeService;
 import org.flowable.engine.delegate.DelegateExecution;
 import org.flowable.engine.runtime.Execution;
+import org.flowable.task.service.delegate.DelegateTask;
 import org.jeecg.common.constant.SymbolConstant;
 import org.jeecg.common.system.api.ISysBaseAPI;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -152,6 +153,49 @@ public class FlowNodeExpression {
        return Collections.emptyList();
    }

+    /**
+     * Get first subprocess variable username.
+     * Example: ${flowNodeExpression.getSonProcessVariableString(execution, 'subApproveUser')}
+     *
+     * @param execution current execution
+     * @param variableName subprocess variable name
+     * @return username
+     */
+    public String getSonProcessVariableString(DelegateExecution execution, String variableName) {
+        List<String> usernames = getSonProcessVariable(execution, variableName);
+        if (CollectionUtils.isEmpty(usernames)) {
+            return null;
+        }
+        return usernames.get(0);
+    }
+
+    /**
+     * Save current task assignee as execution local variable.
+     * Example: ${flowNodeExpression.saveCurrentTaskAssigneeLocal(task, 'subApproveUser')}
+     *
+     * @param task current task
+     * @param variableName local variable name
+     */
+    public void saveCurrentTaskAssigneeLocal(DelegateTask task, String variableName) {
+        if (task == null || StringUtils.isBlank(variableName)) {
+            return;
+        }
+        String assignee = task.getAssignee();
+        if (StringUtils.isBlank(assignee)) {
+            log.warn("saveCurrentTaskAssigneeLocal skipped, taskId={}, taskDefinitionKey={}, assignee is blank",
+                    task.getId(), task.getTaskDefinitionKey());
+            return;
+        }
+        if (StringUtils.isBlank(task.getExecutionId())) {
+            log.warn("saveCurrentTaskAssigneeLocal skipped, taskId={}, taskDefinitionKey={}, executionId is blank",
+                    task.getId(), task.getTaskDefinitionKey());
+            return;
+        }
+        runtimeService.setVariableLocal(task.getExecutionId(), variableName, assignee);
+        log.info("saveCurrentTaskAssigneeLocal success, taskId={}, taskDefinitionKey={}, variableName={}, assignee={}",
+                task.getId(), task.getTaskDefinitionKey(), variableName, assignee);
+    }
+
    private List<String> splitUsernames(Object value) {
        if (value == null) {
            return Collections.emptyList();