我有一个调用带有非必需输入变量的子流的Flow。 如果我的子流有输入,我怎样才能检查子流?
所以这可能是我的流程:
<?xml version="1.0" encoding="UTF-8"?>
<flow xmlns="http://www.springframework.org/schema/webflow"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/webflow
http://www.springframework.org/schema/webflow/spring-webflow-2.4.xsd ">
<subflow-state id="withoutInput" subflow="ReportEinlesen" >
<transition on="ende" to="ReportUebersichtAnzeigen" />
</subflow-state>
<decision-state id="somecondition">
<if test="some condition" then="withnput" else="ende" />
</decision-state>
<subflow-state id="withInput" subflow="ReportEinlesen" >
<input name="Report" value="${Report.foo()}" />
<transition on="ende" to="ReportUebersichtAnzeigen" />
</subflow-state>
<end-state id="ende" />
</flow>
这可能是我的子流程ReportEinlesen:
<?xml version="1.0" encoding="UTF-8"?>
<flow xmlns="http://www.springframework.org/schema/webflow"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/webflow
http://www.springframework.org/schema/webflow/spring-webflow-2.4.xsd ">
<decision-state id="anothercondition">
<if test="has this subflow got input?" then="ShowYourInput" else="ende" />
</decision-state>
<view-state id="ShowYourInput" >
<transition on="Seen" to="ende" />
</view-state>
<end-state id="ende" />
</flow>
答案 0 :(得分:1)
创建委托方法并传递输入变量,然后检查它是否为null