如何正确声明、更改和使用工作流过程变量？
How to properly declare, change and use workflow process variables?
根据Potts先生友情提供的example，我开发了合同审批系统。
BPMN 表示法的业务流程如下所示。
来自 Activiti Eclipse BPMN 2.0 Designer:
Alfresco 中 运行 业务流程的方案：
为了创建活动图，我使用了 Activiti Eclipse BPMN 2.0 Designer 5.18。以下是此插件生成的过程的描述：
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
<process id="contractsApproval" name="Contracts Approval" isExecutable="true">
<startEvent id="startevent1" name="Start" activiti:formKey="scwf:submitReviewTask"></startEvent>
<endEvent id="endevent1" name="End"></endEvent>
<userTask id="usertask1" name="Approval of the first group" activiti:candidateGroups="GROUP_First" activiti:formKey="scwf:activitiFirstReview">
<extensionElements>
<activiti:taskListener event="complete" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if(task.getVariableLocal('scwf_approveRejectOutcome') == 'Approve') {
var newApprovedCount = scwf_approveCount + 1;
execution.setVariable('scwf_approveCount', newApprovedCount);
}]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<userTask id="usertask3" name="Revise" activiti:assignee="${initiator.properties.userName}" activiti:formKey="scwf:activitiRevise">
<extensionElements>
<activiti:taskListener event="complete" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if(task.getVariableLocal('scwf_reviseOutcome') == 'Re-submit') {
execution.setVariable('scwf_resubmit', true);
} else {
execution.setVariable('scwf_resubmit', false);
}]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<userTask id="usertask4" name="Approval of the second group" activiti:candidateGroups="GROUP_Second" activiti:formKey="scwf:activitiSecondReview">
<extensionElements>
<activiti:taskListener event="complete" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if(task.getVariableLocal('scwf_approveRejectOutcome') == 'Approve') {
var newApprovedCount = scwf_approveCount + 1;
execution.setVariable('scwf_approveCount', newApprovedCount);
}
]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<serviceTask id="scripttask1" name="Send a document for approval" activiti:class="org.alfresco.repo.workflow.activiti.script.AlfrescoScriptDelegate">
<extensionElements>
<activiti:field name="runAs">
<activiti:string><![CDATA[admin]]></activiti:string>
</activiti:field>
<activiti:field name="script">
<activiti:string><![CDATA[execution.setVariable('scwf_approveCount', 0);
execution.setVariable('scwf_tpApproved', false);]]></activiti:string>
</activiti:field>
</extensionElements>
</serviceTask>
<parallelGateway id="parallelgateway1" name="Parallel Gateway"></parallelGateway>
<parallelGateway id="parallelgateway2" name="Parallel Gateway"></parallelGateway>
<exclusiveGateway id="exclusivegateway1" name="Exclusive Gateway"></exclusiveGateway>
<sequenceFlow id="flow1" sourceRef="startevent1" targetRef="scripttask1"></sequenceFlow>
<sequenceFlow id="flow2" sourceRef="scripttask1" targetRef="parallelgateway1"></sequenceFlow>
<sequenceFlow id="flow3" sourceRef="parallelgateway1" targetRef="usertask1"></sequenceFlow>
<sequenceFlow id="flow4" sourceRef="parallelgateway1" targetRef="usertask4"></sequenceFlow>
<sequenceFlow id="flow5" sourceRef="usertask1" targetRef="parallelgateway2"></sequenceFlow>
<sequenceFlow id="flow6" sourceRef="usertask4" targetRef="parallelgateway2"></sequenceFlow>
<sequenceFlow id="flow7" sourceRef="parallelgateway2" targetRef="exclusivegateway1"></sequenceFlow>
<sequenceFlow id="flow9" sourceRef="exclusivegateway1" targetRef="usertask3">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${scwf_approveCount < 2}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="flow13" sourceRef="usertask3" targetRef="scripttask1">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${scwf_resubmit == true}]]></conditionExpression>
</sequenceFlow>
<userTask id="usertask5" name="Approved Notification" activiti:assignee="${initiator.properties.userName}" activiti:formKey="scwf:activitiApprovedNotification">
<extensionElements>
<activiti:taskListener event="create" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[var setWebFlagAction = actions.create("set-web-flag");
setWebFlagAction.parameters["active"] = true;
for (var i = 0; i < bpm_package.children.length; i++) {
logger.log("Approving node:" + bpm_package.children[i].nodeRef);
setWebFlagAction.execute(bpm_package.children[i]);
}]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<sequenceFlow id="flow15" sourceRef="usertask5" targetRef="endevent1"></sequenceFlow>
<sequenceFlow id="flow16" sourceRef="usertask3" targetRef="endevent1">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${scwf_resubmit == false}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="flow17" sourceRef="exclusivegateway1" targetRef="usertask5"></sequenceFlow>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_contractsApproval">
<bpmndi:BPMNPlane bpmnElement="contractsApproval" id="BPMNPlane_contractsApproval">
<bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
<omgdc:Bounds height="35.0" width="35.0" x="0.0" y="163.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
<omgdc:Bounds height="35.0" width="35.0" x="790.0" y="164.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
<omgdc:Bounds height="75.0" width="105.0" x="330.0" y="96.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask3" id="BPMNShape_usertask3">
<omgdc:Bounds height="55.0" width="105.0" x="310.0" y="360.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask4" id="BPMNShape_usertask4">
<omgdc:Bounds height="78.0" width="105.0" x="330.0" y="193.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="scripttask1" id="BPMNShape_scripttask1">
<omgdc:Bounds height="89.0" width="121.0" x="60.0" y="136.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="parallelgateway1" id="BPMNShape_parallelgateway1">
<omgdc:Bounds height="40.0" width="40.0" x="230.0" y="162.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="parallelgateway2" id="BPMNShape_parallelgateway2">
<omgdc:Bounds height="40.0" width="40.0" x="480.0" y="160.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="exclusivegateway1" id="BPMNShape_exclusivegateway1">
<omgdc:Bounds height="40.0" width="40.0" x="568.0" y="160.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask5" id="BPMNShape_usertask5">
<omgdc:Bounds height="68.0" width="105.0" x="640.0" y="147.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
<omgdi:waypoint x="35.0" y="180.0"></omgdi:waypoint>
<omgdi:waypoint x="60.0" y="180.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
<omgdi:waypoint x="181.0" y="180.0"></omgdi:waypoint>
<omgdi:waypoint x="230.0" y="182.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
<omgdi:waypoint x="250.0" y="162.0"></omgdi:waypoint>
<omgdi:waypoint x="250.0" y="137.0"></omgdi:waypoint>
<omgdi:waypoint x="330.0" y="133.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
<omgdi:waypoint x="250.0" y="202.0"></omgdi:waypoint>
<omgdi:waypoint x="250.0" y="233.0"></omgdi:waypoint>
<omgdi:waypoint x="330.0" y="232.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">
<omgdi:waypoint x="435.0" y="133.0"></omgdi:waypoint>
<omgdi:waypoint x="500.0" y="137.0"></omgdi:waypoint>
<omgdi:waypoint x="500.0" y="160.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow6" id="BPMNEdge_flow6">
<omgdi:waypoint x="435.0" y="232.0"></omgdi:waypoint>
<omgdi:waypoint x="500.0" y="233.0"></omgdi:waypoint>
<omgdi:waypoint x="500.0" y="200.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow7" id="BPMNEdge_flow7">
<omgdi:waypoint x="520.0" y="180.0"></omgdi:waypoint>
<omgdi:waypoint x="568.0" y="180.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow9" id="BPMNEdge_flow9">
<omgdi:waypoint x="588.0" y="200.0"></omgdi:waypoint>
<omgdi:waypoint x="362.0" y="360.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow13" id="BPMNEdge_flow13">
<omgdi:waypoint x="362.0" y="360.0"></omgdi:waypoint>
<omgdi:waypoint x="120.0" y="225.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow15" id="BPMNEdge_flow15">
<omgdi:waypoint x="745.0" y="181.0"></omgdi:waypoint>
<omgdi:waypoint x="790.0" y="181.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow16" id="BPMNEdge_flow16">
<omgdi:waypoint x="415.0" y="387.0"></omgdi:waypoint>
<omgdi:waypoint x="598.0" y="387.0"></omgdi:waypoint>
<omgdi:waypoint x="807.0" y="199.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow17" id="BPMNEdge_flow17">
<omgdi:waypoint x="608.0" y="180.0"></omgdi:waypoint>
<omgdi:waypoint x="640.0" y="181.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>
这是工作流内容模型：
<?xml version="1.0" encoding="UTF-8"?>
<!-- Definition of new Model -->
<model name="scwf:workflowModel"
xmlns="http://www.alfresco.org/model/dictionary/1.0">
<!-- Optional meta-data about the model -->
<description>...</description>
<author>...</author>
<version>...</version>
<!-- Imports are required to allow references to definitions in other models -->
<imports>
<import uri="http://www.alfresco.org/model/dictionary/1.0" prefix="d" />
<import uri="http://www.alfresco.org/model/bpm/1.0" prefix="bpm" />
</imports>
<!-- Introduction of new namespaces defined by this model -->
<namespaces>
<namespace uri="http://.../model/workflow/1.0" prefix="scwf" />
</namespaces>
<types>
<type name="scwf:submitReviewTask">
<parent>bpm:startTask</parent>
</type>
<type name="scwf:activitiFirstReview">
<parent>scwf:activitiReviewTask</parent>
</type>
<type name="scwf:activitiSecondReview">
<parent>scwf:activitiReviewTask</parent>
</type>
<type name="scwf:activitiRevise">
<parent>bpm:activitiOutcomeTask</parent>
<properties>
<property name="scwf:reviseOutcome">
<type>d:text</type>
<default>Abort</default>
<constraints>
<constraint type="LIST">
<parameter name="allowedValues">
<list>
<value>Re-submit</value>
<value>Abort</value>
</list>
</parameter>
</constraint>
</constraints>
</property>
</properties>
<overrides>
<property name="bpm:packageItemActionGroup">
<default>edit_package_item_actions</default>
</property>
<property name="bpm:outcomePropertyName">
<default>{http://.../model/workflow/1.0}reviseOutcome</default>
</property>
</overrides>
</type>
<type name="scwf:activitiReviewTask">
<parent>bpm:activitiOutcomeTask</parent>
<properties>
<property name="scwf:approveRejectOutcome">
<type>d:text</type>
<default>Reject</default>
<constraints>
<constraint type="LIST">
<parameter name="allowedValues">
<list>
<value>Approve</value>
<value>Reject</value>
</list>
</parameter>
</constraint>
</constraints>
</property>
</properties>
<overrides>
<property name="bpm:packageItemActionGroup">
<default>read_package_item_actions</default>
</property>
<property name="bpm:outcomePropertyName">
<default>{http://.../model/workflow/1.0}approveRejectOutcome</default>
</property>
</overrides>
</type>
<type name="scwf:activitiApprovedNotification">
<parent>bpm:workflowTask</parent>
<overrides>
<property name="bpm:packageItemActionGroup">
<default>read_package_item_actions</default>
</property>
</overrides>
</type>
</types>
</model>
在我的本地计算机上安装：
Alfresco Share v5.2.d (r134641-b15, Aikau 1.0.101.3, Spring Surf
5.2.d, Spring WebScripts 6.13, Freemarker 2.3.20-alfresco-patched, Rhino 1.7R4-alfresco-patched, Yui 2.9.0-alfresco-20141223)
Alfresco Community v5.2.0 (r134428-b13) schema 10005
一切正常...
但是，当我在服务器上安装系统时出现问题，其中：
Alfresco Share v5.2.c (r133673-b12, Aikau 1.0.99, Spring Surf 5.2.c,
Spring WebScripts 6.11, Freemarker 2.3.20-alfresco-patched, Rhino
1.7R4-alfresco-patched, Yui 2.9.0-alfresco-20141223)
Alfresco Community v5.2.0 (r133656-b12) schema 10005
在审批过程中，我收到以下错误信息：
org.activiti.engine.ActivitiException: Unknown property used in
expression: ${scwf_approveCount < 2}
注意：只有在下一组（无论第一组还是第二组）处理后才会出现错误-例如，如果合同被第一组批准/拒绝，则第二组既不能赞成也不能拒绝
门户 ecmarchitect 说：
"You may be wondering why this is a service task instead of a script task. In 5.0.d, the underlying JavaScript engine in Activiti switched from Rhino to Nashorn. This caused a problem related to setting execution variables. The work around is to use a service task."
并展示了如何初始化变量的例子：
<serviceTask id="scripttask1" name="Submit" activiti:class="org.alfresco.repo.workflow.activiti.script.AlfrescoScriptDelegate">
<extensionElements>
<activiti:field name="script">
<activiti:string><![CDATA[execution.setVariable('scwf_approveCount', 0);
execution.setVariable('scwf_tpApproved', false);]]></activiti:string>
</activiti:field>
</extensionElements>
</serviceTask>
我发现了一些关于此的讨论，但是 none 中描述的方法对我的情况没有帮助：
ExceptionActiviti: unknown property used in expression
例如，我尝试通过这些方式初始化变量：
...
<scriptTask id="scripttask1" name="Submit" scriptFormat="javascript" activiti:autoStoreVariables="true">
<script>var scwf_approveCount = 0; var scwf_tpApproved = false;</script>
</scriptTask>
...
<scriptTask id="scripttask1" name="Submit" scriptFormat="javascript">
<script><![CDATA[var scwf_approveCount = 0; var scwf_tpApproved =
false;]]></script>
</scriptTask>
...
<scriptTask id="scripttask1" name="Submit" scriptFormat="javascript" activiti:autoStoreVariables="true">
<script>execution.setVariable('scwf_approveCount', 0); execution.setVariable('scwf_tpApproved', false);</script>
</scriptTask>
...
我认为我需要在服务器上重新安装 Alfresco 以匹配本地安装。
还有其他方法可以解决这个问题吗？我将非常感谢这些信息。感谢大家。
附加信息：我安装了完全相同的系统。在服务器和我的本地计算机上：
Alfresco Share v5.2.d (r134641-b15, Aikau 1.0.101.3, Spring Surf
5.2.d, Spring WebScripts 6.13, Freemarker 2.3.20-alfresco-patched, Rhino 1.7R4-alfresco-patched, Yui 2.9.0-alfresco-20141223)
Alfresco Community v5.2.0 (r134428-b13) schema 10005
但这很奇怪 - 在本地一切正常但在服务器上我再次遇到同样的错误:
org.activiti.engine.ActivitiException: Unknown property used in
expression: ${scwf_approveCount < 2}
我比较了图表中的数据和基础中的数据 XML，它们是相同的。
scwf_approveCount 您正在使用此 属性 请确保您已在工作流程的模型文件中将此 属性 定义为 scwf: approveCount
您正在使用此 属性 scwf_approveCount，它可能未在您的模型文件中定义。
根据Potts先生友情提供的example，我开发了合同审批系统。
BPMN 表示法的业务流程如下所示。
来自 Activiti Eclipse BPMN 2.0 Designer:
Alfresco 中 运行 业务流程的方案：
为了创建活动图，我使用了 Activiti Eclipse BPMN 2.0 Designer 5.18。以下是此插件生成的过程的描述：
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
<process id="contractsApproval" name="Contracts Approval" isExecutable="true">
<startEvent id="startevent1" name="Start" activiti:formKey="scwf:submitReviewTask"></startEvent>
<endEvent id="endevent1" name="End"></endEvent>
<userTask id="usertask1" name="Approval of the first group" activiti:candidateGroups="GROUP_First" activiti:formKey="scwf:activitiFirstReview">
<extensionElements>
<activiti:taskListener event="complete" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if(task.getVariableLocal('scwf_approveRejectOutcome') == 'Approve') {
var newApprovedCount = scwf_approveCount + 1;
execution.setVariable('scwf_approveCount', newApprovedCount);
}]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<userTask id="usertask3" name="Revise" activiti:assignee="${initiator.properties.userName}" activiti:formKey="scwf:activitiRevise">
<extensionElements>
<activiti:taskListener event="complete" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if(task.getVariableLocal('scwf_reviseOutcome') == 'Re-submit') {
execution.setVariable('scwf_resubmit', true);
} else {
execution.setVariable('scwf_resubmit', false);
}]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<userTask id="usertask4" name="Approval of the second group" activiti:candidateGroups="GROUP_Second" activiti:formKey="scwf:activitiSecondReview">
<extensionElements>
<activiti:taskListener event="complete" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if(task.getVariableLocal('scwf_approveRejectOutcome') == 'Approve') {
var newApprovedCount = scwf_approveCount + 1;
execution.setVariable('scwf_approveCount', newApprovedCount);
}
]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<serviceTask id="scripttask1" name="Send a document for approval" activiti:class="org.alfresco.repo.workflow.activiti.script.AlfrescoScriptDelegate">
<extensionElements>
<activiti:field name="runAs">
<activiti:string><![CDATA[admin]]></activiti:string>
</activiti:field>
<activiti:field name="script">
<activiti:string><![CDATA[execution.setVariable('scwf_approveCount', 0);
execution.setVariable('scwf_tpApproved', false);]]></activiti:string>
</activiti:field>
</extensionElements>
</serviceTask>
<parallelGateway id="parallelgateway1" name="Parallel Gateway"></parallelGateway>
<parallelGateway id="parallelgateway2" name="Parallel Gateway"></parallelGateway>
<exclusiveGateway id="exclusivegateway1" name="Exclusive Gateway"></exclusiveGateway>
<sequenceFlow id="flow1" sourceRef="startevent1" targetRef="scripttask1"></sequenceFlow>
<sequenceFlow id="flow2" sourceRef="scripttask1" targetRef="parallelgateway1"></sequenceFlow>
<sequenceFlow id="flow3" sourceRef="parallelgateway1" targetRef="usertask1"></sequenceFlow>
<sequenceFlow id="flow4" sourceRef="parallelgateway1" targetRef="usertask4"></sequenceFlow>
<sequenceFlow id="flow5" sourceRef="usertask1" targetRef="parallelgateway2"></sequenceFlow>
<sequenceFlow id="flow6" sourceRef="usertask4" targetRef="parallelgateway2"></sequenceFlow>
<sequenceFlow id="flow7" sourceRef="parallelgateway2" targetRef="exclusivegateway1"></sequenceFlow>
<sequenceFlow id="flow9" sourceRef="exclusivegateway1" targetRef="usertask3">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${scwf_approveCount < 2}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="flow13" sourceRef="usertask3" targetRef="scripttask1">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${scwf_resubmit == true}]]></conditionExpression>
</sequenceFlow>
<userTask id="usertask5" name="Approved Notification" activiti:assignee="${initiator.properties.userName}" activiti:formKey="scwf:activitiApprovedNotification">
<extensionElements>
<activiti:taskListener event="create" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[var setWebFlagAction = actions.create("set-web-flag");
setWebFlagAction.parameters["active"] = true;
for (var i = 0; i < bpm_package.children.length; i++) {
logger.log("Approving node:" + bpm_package.children[i].nodeRef);
setWebFlagAction.execute(bpm_package.children[i]);
}]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<sequenceFlow id="flow15" sourceRef="usertask5" targetRef="endevent1"></sequenceFlow>
<sequenceFlow id="flow16" sourceRef="usertask3" targetRef="endevent1">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${scwf_resubmit == false}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="flow17" sourceRef="exclusivegateway1" targetRef="usertask5"></sequenceFlow>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_contractsApproval">
<bpmndi:BPMNPlane bpmnElement="contractsApproval" id="BPMNPlane_contractsApproval">
<bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
<omgdc:Bounds height="35.0" width="35.0" x="0.0" y="163.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
<omgdc:Bounds height="35.0" width="35.0" x="790.0" y="164.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
<omgdc:Bounds height="75.0" width="105.0" x="330.0" y="96.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask3" id="BPMNShape_usertask3">
<omgdc:Bounds height="55.0" width="105.0" x="310.0" y="360.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask4" id="BPMNShape_usertask4">
<omgdc:Bounds height="78.0" width="105.0" x="330.0" y="193.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="scripttask1" id="BPMNShape_scripttask1">
<omgdc:Bounds height="89.0" width="121.0" x="60.0" y="136.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="parallelgateway1" id="BPMNShape_parallelgateway1">
<omgdc:Bounds height="40.0" width="40.0" x="230.0" y="162.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="parallelgateway2" id="BPMNShape_parallelgateway2">
<omgdc:Bounds height="40.0" width="40.0" x="480.0" y="160.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="exclusivegateway1" id="BPMNShape_exclusivegateway1">
<omgdc:Bounds height="40.0" width="40.0" x="568.0" y="160.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask5" id="BPMNShape_usertask5">
<omgdc:Bounds height="68.0" width="105.0" x="640.0" y="147.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
<omgdi:waypoint x="35.0" y="180.0"></omgdi:waypoint>
<omgdi:waypoint x="60.0" y="180.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
<omgdi:waypoint x="181.0" y="180.0"></omgdi:waypoint>
<omgdi:waypoint x="230.0" y="182.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
<omgdi:waypoint x="250.0" y="162.0"></omgdi:waypoint>
<omgdi:waypoint x="250.0" y="137.0"></omgdi:waypoint>
<omgdi:waypoint x="330.0" y="133.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
<omgdi:waypoint x="250.0" y="202.0"></omgdi:waypoint>
<omgdi:waypoint x="250.0" y="233.0"></omgdi:waypoint>
<omgdi:waypoint x="330.0" y="232.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">
<omgdi:waypoint x="435.0" y="133.0"></omgdi:waypoint>
<omgdi:waypoint x="500.0" y="137.0"></omgdi:waypoint>
<omgdi:waypoint x="500.0" y="160.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow6" id="BPMNEdge_flow6">
<omgdi:waypoint x="435.0" y="232.0"></omgdi:waypoint>
<omgdi:waypoint x="500.0" y="233.0"></omgdi:waypoint>
<omgdi:waypoint x="500.0" y="200.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow7" id="BPMNEdge_flow7">
<omgdi:waypoint x="520.0" y="180.0"></omgdi:waypoint>
<omgdi:waypoint x="568.0" y="180.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow9" id="BPMNEdge_flow9">
<omgdi:waypoint x="588.0" y="200.0"></omgdi:waypoint>
<omgdi:waypoint x="362.0" y="360.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow13" id="BPMNEdge_flow13">
<omgdi:waypoint x="362.0" y="360.0"></omgdi:waypoint>
<omgdi:waypoint x="120.0" y="225.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow15" id="BPMNEdge_flow15">
<omgdi:waypoint x="745.0" y="181.0"></omgdi:waypoint>
<omgdi:waypoint x="790.0" y="181.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow16" id="BPMNEdge_flow16">
<omgdi:waypoint x="415.0" y="387.0"></omgdi:waypoint>
<omgdi:waypoint x="598.0" y="387.0"></omgdi:waypoint>
<omgdi:waypoint x="807.0" y="199.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow17" id="BPMNEdge_flow17">
<omgdi:waypoint x="608.0" y="180.0"></omgdi:waypoint>
<omgdi:waypoint x="640.0" y="181.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>
这是工作流内容模型：
<?xml version="1.0" encoding="UTF-8"?>
<!-- Definition of new Model -->
<model name="scwf:workflowModel"
xmlns="http://www.alfresco.org/model/dictionary/1.0">
<!-- Optional meta-data about the model -->
<description>...</description>
<author>...</author>
<version>...</version>
<!-- Imports are required to allow references to definitions in other models -->
<imports>
<import uri="http://www.alfresco.org/model/dictionary/1.0" prefix="d" />
<import uri="http://www.alfresco.org/model/bpm/1.0" prefix="bpm" />
</imports>
<!-- Introduction of new namespaces defined by this model -->
<namespaces>
<namespace uri="http://.../model/workflow/1.0" prefix="scwf" />
</namespaces>
<types>
<type name="scwf:submitReviewTask">
<parent>bpm:startTask</parent>
</type>
<type name="scwf:activitiFirstReview">
<parent>scwf:activitiReviewTask</parent>
</type>
<type name="scwf:activitiSecondReview">
<parent>scwf:activitiReviewTask</parent>
</type>
<type name="scwf:activitiRevise">
<parent>bpm:activitiOutcomeTask</parent>
<properties>
<property name="scwf:reviseOutcome">
<type>d:text</type>
<default>Abort</default>
<constraints>
<constraint type="LIST">
<parameter name="allowedValues">
<list>
<value>Re-submit</value>
<value>Abort</value>
</list>
</parameter>
</constraint>
</constraints>
</property>
</properties>
<overrides>
<property name="bpm:packageItemActionGroup">
<default>edit_package_item_actions</default>
</property>
<property name="bpm:outcomePropertyName">
<default>{http://.../model/workflow/1.0}reviseOutcome</default>
</property>
</overrides>
</type>
<type name="scwf:activitiReviewTask">
<parent>bpm:activitiOutcomeTask</parent>
<properties>
<property name="scwf:approveRejectOutcome">
<type>d:text</type>
<default>Reject</default>
<constraints>
<constraint type="LIST">
<parameter name="allowedValues">
<list>
<value>Approve</value>
<value>Reject</value>
</list>
</parameter>
</constraint>
</constraints>
</property>
</properties>
<overrides>
<property name="bpm:packageItemActionGroup">
<default>read_package_item_actions</default>
</property>
<property name="bpm:outcomePropertyName">
<default>{http://.../model/workflow/1.0}approveRejectOutcome</default>
</property>
</overrides>
</type>
<type name="scwf:activitiApprovedNotification">
<parent>bpm:workflowTask</parent>
<overrides>
<property name="bpm:packageItemActionGroup">
<default>read_package_item_actions</default>
</property>
</overrides>
</type>
</types>
</model>
在我的本地计算机上安装：
Alfresco Share v5.2.d (r134641-b15, Aikau 1.0.101.3, Spring Surf 5.2.d, Spring WebScripts 6.13, Freemarker 2.3.20-alfresco-patched, Rhino 1.7R4-alfresco-patched, Yui 2.9.0-alfresco-20141223)
Alfresco Community v5.2.0 (r134428-b13) schema 10005
一切正常...
但是，当我在服务器上安装系统时出现问题，其中：
Alfresco Share v5.2.c (r133673-b12, Aikau 1.0.99, Spring Surf 5.2.c, Spring WebScripts 6.11, Freemarker 2.3.20-alfresco-patched, Rhino 1.7R4-alfresco-patched, Yui 2.9.0-alfresco-20141223)
Alfresco Community v5.2.0 (r133656-b12) schema 10005
在审批过程中，我收到以下错误信息：
org.activiti.engine.ActivitiException: Unknown property used in expression: ${scwf_approveCount < 2}
注意：只有在下一组（无论第一组还是第二组）处理后才会出现错误-例如，如果合同被第一组批准/拒绝，则第二组既不能赞成也不能拒绝
门户 ecmarchitect 说：
"You may be wondering why this is a service task instead of a script task. In 5.0.d, the underlying JavaScript engine in Activiti switched from Rhino to Nashorn. This caused a problem related to setting execution variables. The work around is to use a service task."
并展示了如何初始化变量的例子：
<serviceTask id="scripttask1" name="Submit" activiti:class="org.alfresco.repo.workflow.activiti.script.AlfrescoScriptDelegate">
<extensionElements>
<activiti:field name="script">
<activiti:string><![CDATA[execution.setVariable('scwf_approveCount', 0);
execution.setVariable('scwf_tpApproved', false);]]></activiti:string>
</activiti:field>
</extensionElements>
</serviceTask>
我发现了一些关于此的讨论，但是 none 中描述的方法对我的情况没有帮助：
ExceptionActiviti: unknown property used in expression
例如，我尝试通过这些方式初始化变量：
...
<scriptTask id="scripttask1" name="Submit" scriptFormat="javascript" activiti:autoStoreVariables="true">
<script>var scwf_approveCount = 0; var scwf_tpApproved = false;</script>
</scriptTask>
...
<scriptTask id="scripttask1" name="Submit" scriptFormat="javascript">
<script><![CDATA[var scwf_approveCount = 0; var scwf_tpApproved =
false;]]></script>
</scriptTask>
...
<scriptTask id="scripttask1" name="Submit" scriptFormat="javascript" activiti:autoStoreVariables="true">
<script>execution.setVariable('scwf_approveCount', 0); execution.setVariable('scwf_tpApproved', false);</script>
</scriptTask>
...
我认为我需要在服务器上重新安装 Alfresco 以匹配本地安装。
还有其他方法可以解决这个问题吗？我将非常感谢这些信息。感谢大家。
附加信息：我安装了完全相同的系统。在服务器和我的本地计算机上：
Alfresco Share v5.2.d (r134641-b15, Aikau 1.0.101.3, Spring Surf 5.2.d, Spring WebScripts 6.13, Freemarker 2.3.20-alfresco-patched, Rhino 1.7R4-alfresco-patched, Yui 2.9.0-alfresco-20141223)
Alfresco Community v5.2.0 (r134428-b13) schema 10005
但这很奇怪 - 在本地一切正常但在服务器上我再次遇到同样的错误:
org.activiti.engine.ActivitiException: Unknown property used in expression: ${scwf_approveCount < 2}
我比较了图表中的数据和基础中的数据 XML，它们是相同的。
scwf_approveCount 您正在使用此 属性 请确保您已在工作流程的模型文件中将此 属性 定义为 scwf: approveCount 您正在使用此 属性 scwf_approveCount，它可能未在您的模型文件中定义。