}
String fullId = receiverId;
if (!receiverId.startsWith("http://")) {
fullId = "http://api.douban.com/people/" + receiverId;
}
DoubanEntityObj entity = new DoubanEntityObj();
entity.setName("receiver");
entity.setUri(fullId);
DoubanMailEntryObj obj = new DoubanMailEntryObj();
obj.setEntity(entity);
obj.setTitle(title);
obj.setContent(content);
return obj;