ArrayList和JSONArray，Map和JSONOBject的区别

古城微笑少年丶 2022-05-20 06:12 187阅读 0赞

没搞明白有什么区别

上一波代码

public static void main(String[] args) {
        	
        	JSONArray result = new JSONArray();
            for (ServiceType type : ServiceType.values()) {
                JSONObject obj = new JSONObject();
                obj.put("type", type.getValue());
                obj.put("name", type.getName());
                result.add(obj);
                
            }
            System.out.println(result);
            
            ArrayList<Map<String, Object>> a = new ArrayList<Map<String, Object>>();
            for (ServiceType type : ServiceType.values()) {
            	Map<String, Object> obj = new HashMap<String, Object>();
                obj.put("type", type.getValue());
                obj.put("name", type.getName());
                a.add(obj);
            }
            System.out.println(a);
    	}

枚举类：

public enum ServiceType {
    
        MIGU_PAY("支付业务", 0), GAME_POINT("游戏点数充值", 1);
    
        private int value;
        private String name;
    
        private ServiceType(String name, int value) {
            this.name = name;
            this.value = value;
        }
    
        public static ServiceType getRelationByName(String name) {
            for (ServiceType rel : ServiceType.values()) {
                if (rel.name.equals(name)) {
                    return rel;
                }
            }
            return null;
        }
    
        public static ServiceType getRalationByValue(Integer value) {
            if (value != null) {
                for (ServiceType rel : ServiceType.values()) {
                    if (rel.value == value) {
                        return rel;
                    }
                }
            }
            return null;
        }
    
        public Integer getValue() {
            return this.value;
        }
    
        public String getName() {
            return this.name;
        }
    
    }

输出结果：

![70][]

从输出结果来看，只是JSONArray和JSONObject加引号了

JSONArray继承List，JSONObject继承Map

[70]: /images/20220520/2496e097b8504755bc2331564d6a862d.png