我没有找到这样的多地图构造......当我想这样做时,我会遍历地图并填充多地图。还有其他方法吗?
final Map<String, Collection<String>> map = ImmutableMap.<String, Collection<String>>of(
"1", Arrays.asList("a", "b", "c", "c"));
System.out.println(Multimaps.forMap(map));
final Multimap<String, String> expected = ArrayListMultimap.create();
for (Map.Entry<String, Collection<String>> entry : map.entrySet()) {
expected.putAll(entry.getKey(), entry.getValue());
}
System.out.println(expected);
第一个结果是{1=[[a, b, c, c]]}
,但我期望{1=[a, b, c, c]}