public static File getFile(ActionContext actionContext) throws OgnlException {
Thing self = (Thing) actionContext.get("self");
Object obj = UtilData.getData(self, "file", actionContext);
if (obj instanceof File) {
return (File) obj;
} else if (obj instanceof String) {
return new File((String) obj);
} else {
throw new ActionException(obj + "is not a file, path=" + self.getMetadata().getPath());
}
}
/**
* size是byte的长度，返回可读的字符串，比如1KB，2MB等。
*
* @param size
* @return
*/
public static String getSizeInfo(long size) {
return org.xmeta.util.UtilData.getSizeInfo(size);
}