java遍历map

Map<String, Map<String, Object>> bookMap = new HashMap<String, Map<String, Object>>();
List<HashMap<String, Object>> loglist = new ArrayList<HashMap<String, Object>>();
loglist = logService.sumGroupByLibrary(libraryId, offset, limit);
int index = 0;
for (HashMap<String, Object> map : loglist) {
Map<String, Object> data = new HashMap<String, Object>();
for (Iterator it = map.entrySet().iterator(); it.hasNext();) {
Map.Entry<String, Object> entry = (Map.Entry<String, Object>) it
.next();
if (entry.getKey().contentEquals("id")) {
Book book = bookService.get(Long.valueOf(entry.getValue()
.toString()));
data.put("book", book);
if (book != null) {
List<Author> authorlist = authorService.findByBook(Long
.valueOf(entry.getValue().toString()));
if (authorlist != null && authorlist.size() > 0) {
data.put("authorList", authorlist);
}
}
}
if (entry.getKey().contentEquals("total")) {
data.put("count", entry.getValue());
}
}
bookMap.put(modelName + index++, data);
}