WSO2 ESB：如何使用 VFS 从 Base64 写入文件？

Question

我和这个人有几乎相同的问题： WSO2 ESB - writing files out of base64

但是，在该问题的答案中没有提及如何在 JavaScript 中解码 Base64 字符串并将其附加到有效负载。这就是我感兴趣的。

提前致谢，

紧张

Answer 1

采用了稍微不同的方法。我创建了一个实用程序代理服务来重新下载文件，然后将其推送到文件系统中。

utilty_createFile 代理服务

<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
       name="utility_createFile"
       transports="https,http"
       statistics="disable"
       trace="disable"
       startOnLoad="true">
   <target inSequence="utility_createFile_IN" outSequence="utility_createFile_OUT"/>
   <description/>
</proxy>

utility_createFile_IN 序列

<?xml version="1.0" encoding="UTF-8"?>
<sequence name="utility_createFile_IN" onError="fault" xmlns="http://ws.apache.org/ns/synapse">
    <property name="FORCE_SC_ACCEPTED" scope="axis2" value="true"/>
    <property expression="//createFile/download_folder"
        name="uri.var.download_folder" xmlns:ns="http://org.apache.synapse/xsd"/>
    <property expression="//createFile/url" name="uri.var.download_url" xmlns:ns="http://org.apache.synapse/xsd"/>
    <script language="js"><![CDATA[var download_url = mc.getProperty('uri.var.download_url');
download_url = decodeURIComponent(download_url);
mc.setProperty('uri.var.download_url', download_url);]]></script>
    <send>
        <endpoint>
            <http method="GET" uri-template="{uri.var.download_url}"/>
        </endpoint>
    </send>
</sequence>

utility_createFile_OUT 序列

<?xml version="1.0" encoding="UTF-8"?>
<sequence name="utility_createFile_IN" onError="fault" xmlns="http://ws.apache.org/ns/synapse">
    <property name="FORCE_SC_ACCEPTED" scope="axis2" value="true"/>
    <property expression="//createFile/download_folder"
        name="uri.var.download_folder" xmlns:ns="http://org.apache.synapse/xsd"/>
    <property expression="//createFile/url" name="uri.var.download_url" xmlns:ns="http://org.apache.synapse/xsd"/>
    <script language="js"><![CDATA[var download_url = mc.getProperty('uri.var.download_url');
download_url = decodeURIComponent(download_url);
mc.setProperty('uri.var.download_url', download_url);]]></script>
    <send>
        <endpoint>
            <http method="GET" uri-template="{uri.var.download_url}"/>
        </endpoint>
    </send>
</sequence>