CubeOpenGetDocRequest request = new CubeOpenGetDocRequest();
    request.setDocId(params.get("docId"));
    request.setLevel(ApiLevel.ONE);
    CubePatentSearchResponse response = CLIENT.execute(request);
    Document document = response.getDocument();
    document.getValue(PatField.ApplicationDate);
                            
                        

                            
    "document":{
		"fieldValues":{
			"aaa":"",
			"pr":"",
			"aab":"",
			"ain":"",
			"icd":"",
			"aipn":"",
			"type":[
				"cn_um"
			],
			"aco":"",
			"iad":"",
			"acfd":"",
			"agt":[
				"姜绍华",
				"李伯勤"
			],
			"apat":"",
			"aagc":"",
			"apa":"",
			"apd":"20130403",
			"ic1":"A61J1/16",
			"ogn":"",
			"ian":"",
			"ic2":[
				"A61J1/16",
				"A61M35/00",
				"A61F9/00"
			],
			"ipd":"",
			"apn":"CN202844129U",
			"aa":"新疆维吾尔自治区伊犁哈萨克自治州奎屯市第三中学实验室转",
			"cfd":"",
			"aagt":"",
			"ab":"本实用新型公开了一种滴眼液辅助器，通过在眼液瓶固定套(5)顶端的两侧设有铰链(3)，在眼液瓶固定套(5)顶端的两侧还设有与铰链(3)铰接的手柄(1)，在手柄(1)的顶端设有圆弧形的眼皮撑夹(4)，在手柄(2)的底端设有手柄环(1)，可以将眼皮撑开，再滴入滴眼液，在没有别人帮助时自己也很容易将滴眼液滴入到眼睛内，操作起来非常方便。",
			"pat":[
				"个人"
			],
			"apr":"",
			"ad":"20120907",
			"aicd":"",
			"in":[
				"马小娟"
			],
			"ipn":"",
			"aiad":"",
			"cty":"cn",
			"co":"新疆(65)",
			"an":"CN201220454416.7",
			"pa":[
				"马小娟"
			],
			"aipd":"",
			"pd":"20130403",
			"ti":"滴眼液辅助器",
			"aogn":"",
			"aian":"",
			"aic2":"",
			"aic1":"",
			"agc":"石河子恒智专利代理事务所",
			"pn":"CN202844129U"
		}
	}
                            
                        

                            
    {
        "errorCode":"500",
        "msg":"docId cannot be null or empty!",
        "success":false
    }