Loops WSO2迭代从vfs文件获取属性

我用的是WSO2和VFS。我需要获取传入文件，fileinput.xml并将id字段记录在一起。VFS已启用且功能正常，当我将fileinput.xml移动到我的test_in文件夹时，它会得到适当的处理并正确地放入test_out或test_failure。我已经阅读了大量的在线文档，但无法理解如何做以下工作

我的问题是

如何从我的文件输入.xml中获取属性

如何迭代ID并将它们连接到日志中

fileinput.xml

<soapenv:Envelope
    xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
    <soapenv:Header/>
    <soapenv:Body>
        <customers>
            <customer>
                <id>testid1</id>
                <prop1>a</prop1>
                <prop2>b</prop2>
            <customer/>
            <customer>
                <id>testid2</id>
                <prop1>3</prop1>
                <prop2>4</prop2>
            <customer/>
        </customers>
    </soapenv:Body>
</soapenv:Envelope>

测试1
A.
B
测试2
3.
4.

我的wso2代理文件

<?xml version="1.0" encoding="UTF-8"?>
<proxy
    xmlns="http://ws.apache.org/ns/synapse" name="FileProxy" transports="vfs" startOnLoad="true" trace="disable">
    <target>
        <parameter name="transport.vfs.ActionAfterProcess">MOVE</parameter>
        <parameter name="transport.vfs.ActionAfterFailure">MOVE</parameter>
        <parameter name="transport.PollInterval">5</parameter>
        <parameter name="transport.vfs.FileURI">file:///Users/myuser/test_in</parameter>
        <parameter name="transport.vfs.MoveAfterProcess">file:///Users/myusertest_out</parameter>
        <parameter name="transport.vfs.MoveAfterFailure">file:///Users/myuser/test_failure</parameter>
        <parameter name="transport.vfs.FileNamePattern">.*.xml</parameter>
        <parameter name="transport.vfs.ContentType">text/xml</parameter>
        <inSequence>
            <log category="WARN" level="full">
                <property name="MESSAGE" value="In Sequence"/>
            </log>
            <clone>
                <target sequence="fileWriteSequence"/>
            </clone>
        </inSequence>
    </target>
    <outSequence>
        <log category="WARN" level="full">
            <property name="MESSAGE" value="Out Sequence"/>
        </log>
        <send/>
    </outSequence>
</proxy>

移动
移动
5.
file:///Users/myuser/test_in
file:///Users/myusertest_out
file:///Users/myuser/test_failure
.xml
文本/xml

我的fileWriteSequence

<?xml version="1.0" encoding="UTF-8"?>
<sequence name="fileWriteSequence">
    <log level="full">
        <property name="sequence" value="fileWriteSequence"/>
    </log>
    <property name="transport.vfs.ReplyFileName" expression="fn:concat(fn:substring-after(get-property('MessageID'), 'urn:uuid:'), '.txt')" scope="transport"/>
    <property name="OUT_ONLY" value="true"/>
    <send>
        <endpoint name="FileEpr">
            <address uri="vfs:file:///Users/myuser/test_out"/>
        </endpoint>
    </send>
</sequence>

您可以使用iterate mediator对“id”元素进行迭代，并使用操作范围中的属性连接所有id值。请参阅

谢谢，我今天会尽快尝试，如果有效，我会接受。