@Override
protected Value calculate(MsgItem item, PackContext context) {
MsgField field;
// 如果v参数带有后缀 则取由后缀指定的节点
if (context.param.postfix == null) field = (MsgField) item;
else {
field = item.SelectSingleField(context.param.postfix);
if (field == null)
throw new TESException(
MsgErr.Pack.VTargetNull, "target: " + context.param.postfix + " item: " + item);
}
// 将域本身的属性添加到Processor的参数列表 Processor原有的参数的优先级为高
for (String k : item.getAttributes().keySet())
if (!context.processorParams.containsKey(k))
context.processorParams.put(k, item.getAttribute(k).str);
return new Value(field.value());
}
public static Value md5(MsgItem item, PackContext context) throws NoSuchAlgorithmException {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(item.getAttribute(MsgContainerUtils.C_InternalDomElementPrefix + "m").bytes);
return new Value(md.digest());
}