我正在尝试在WSO2 ESB中实现自定义中介，我想要实现的是中介必须将文件路径作为输入，然后将其作为附件添加到SOAP消息中。
到目前为止我编写的中介代码获取附件路径并打印SOAP消息。现在我已经浏览了MessageContext接口的文档，我可以看到我们可以在SOAP消息中添加/删除元素等，但我无法弄清楚如何在SOAP消息中添加附件。有什么想法吗？
import javax.activation.FileDataSource;
import org.apache.axiom.soap.SOAPBody;
import org.apache.synapse.MessageContext;
import org.apache.synapse.mediators.AbstractMediator;
public class SoapModifier extends AbstractMediator {
private String AttachmentFilePath;
public boolean mediate(MessageContext context) {
context.setDoingSWA(true);
FileDataSource fileDataSource = new FileDataSource(AttachmentFilePath);
SOAPBody soapBody = context.getEnvelope().getBody();
System.out.println("Message Being Processed : " + context.toString());
return true;
}
public String getAttachmentFilePath(){
return AttachmentFilePath;
}
public void setAttachmentFilePath(String path){
AttachmentFilePath = path;
}
}