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Flowable Unknown property used in expression: xxx

2022-03-22 22:13:21 【MTonj】

In the use of flowable Attribute of a user task ：【 Skip expression 】 When the function , Set the expression to ${noCurrentUser == true}, There is no problem saving the process definition , When the process instance starts , An error has occurred ：

Because it is found that Runtime process variable data table ( act_ru_variable ), No, noCurrentUser This variable exists .

Solution 1 ：

Before starting the instance , Default this variable , Give a default value

Map<String, Object> variables =po.getVariables();
variables.put("initiator",userInfo.getId());
variables.put("_FLOWABLE_SKIP_EXPRESSION_ENABLED", true);
variables.put("noCurrentUser",false);
ProcessInstance processInstance = runtimeService.startProcessInstanceById(procDefId, variables);

Solution 2 ：

According to official documents Description of the expression , It can be used ${var:get(noCurrentUser)== true} To replace **

${noCurrentUser == true}**