Map值如下

Map<String,Object> map = new HashMap<>();

map.put("key1","value1");

map.put("key2","value2");

map.put("key3","value3");

1、在已知鍵值得情況下獲取Map中的值

Object value1 = map.get("key1");

Object value2 = map.get("key2");

Object value3 = map.get("key3")

2、在未知鍵值的情況下獲取Map的值

map.entrySet()

Set<Entry<String,Object>> entry = map.entrySet();

for(Entry<String,Object> value:entry){

value.getValue();

map.keySet()

for(String key:map.keySet()){

map.get(key);