2个List去重

// 2个List<实体>去重
private List removeRepeatList(List list, List newList) {
for (Role role : list) {
Iterator iterator = newList.iterator();
while (iterator.hasNext()) {
Role next = iterator.next();
if (next.getId().equals(role.getId())) {
iterator.remove();
}
}
}
list.addAll(newList);
return list;
}