fastJson设置有序

直接看构造方法,可以设置有序和无序,默认是false无序,可以设置为true为有序

private static final long serialVersionUID = 1L;
    private static final int DEFAULT_INITIAL_CAPACITY = 16;
    private final Map<String, Object> map;

    public JSONObject() {
        this(16, false);
    }

    public JSONObject(Map<String, Object> map) {
        if (map == null) {
            throw new IllegalArgumentException("map is null.");
        } else {
            this.map = map;
        }
    }

    public JSONObject(boolean ordered) {
        this(16, ordered);
    }

有序

JSONObject jsonObject  = new JSONObject(true);