java 遍历Map 和 根据Map的值（value）取键(key)_一片星空～的博客_java map根据value获取key

public static void main(String[] args) {
//		Map<String, Object> map = new HashMap<String, Object>();
		Map<String, Object> map = new LinkedHashMap<String, Object>();
		map.put("username","zhaokuo");
		map.put("password", "123456");
		map.put("email", "
public static void main(String[] args)