如何在WSO2 ESB中将24小时格式时间转换为12小时格式作为属性

我不知道为什么您只必须使用有效负载工厂或在有效负载工厂下执行此操作。在那里，您只能使用xpath进行“转换”，如下所示，它非常讨厌且不完美。如果我记得在wso2esb 4.9.0中，已经有了ScriptMediator，这样做会更好。我在wso2ei 6上进行了测试。

<sequence name="time" xmlns="http://ws.apache.org/ns/synapse">
   <property expression="//time/text()" name="time" scope="default" type="STRING" xmlns:ns="http://org.apache.synapse/xsd"/>
   <script language="js"><![CDATA[
   var timeIn = mc.getProperty('time');   
   var displayFormat = new java.text.SimpleDateFormat("hh:mm:ss a");   
   var parseFormat = new java.text.SimpleDateFormat("HH:mm:ss");
   mc.setProperty('scriptTime', displayFormat.format(parseFormat.parse(timeIn)));
   ]]></script>
   
   <payloadFactory media-type="json">
       <format>{"inputTime":"$1", "scriptTime":"$2", "xpathTime":"$3"}</format>
       <args>
           <arg evaluator="xml" expression="$ctx:time" literal="false" xmlns:ns="http://org.apache.synapse/xsd"/>
           <arg evaluator="xml" expression="$ctx:scriptTime" literal="false" xmlns:ns="http://org.apache.synapse/xsd"/>
           <arg evaluator="xml"
               expression="concat(concat(substring(number(substring-before($ctx:time,':'))+12, 1 div (number(substring-before($ctx:time,':')) = 0)),substring(number(substring-before($ctx:time,':'))-12, 1 div (number(substring-before($ctx:time,':')) > 12)),substring(number(substring-before($ctx:time,':')), 1 div (number(substring-before($ctx:time,':')) &lt;= 12 and number(substring-before($ctx:time,':')) > 0 )),),':',substring-after($ctx:time,':') , concat(substring(' PM', 1, number(number(substring-before($ctx:time,':')) > 11) * string-length(' PM')),substring(' AM', 1, number(not(number(substring-before($ctx:time,':')) > 11)) * string-length(' AM'))))"
               literal="false" xmlns:ns="http://org.apache.synapse/xsd"/>
        </args>
    </payloadFactory>

    <log level="custom">
        <property expression="$ctx:time" name="time" xmlns:ns="http://org.apache.synapse/xsd"/>
        <property expression="$ctx:scriptTime" name="scriptTime" xmlns:ns="http://org.apache.synapse/xsd"/>
        <property expression="//xpathTime" name="xpathTime" xmlns:ns="http://org.apache.synapse/xsd"/>
    </log>
    <respond/>
</sequence>