json如下:
{"words_result":{"姓名":{"location":{"top":277,"left":618,"width":372,"height":164},"words":"張三"},"民族":{"location":{"top":568,"left":1262,"width":101,"height":126},"words":"漢"},"住址":{"location":{"top":1082,"left":552,"width":1392,"height":486},"words":"住址住址住址"},"公民身份號碼":{"location":{"top":1733,"left":1105,"width":1749,"height":157},"words":"***************"},"出生":{"location":{"top":814,"left":561,"width":969,"height":132},"words":"********"},"性別":{"location":{"top":561,"left":580,"width":110,"height":129},"words":"男"}},"idcard_number_type":1,"words_result_num":6,"image_status":"normal","log_id":1453528763137919643}
這個json有很多層,使用一般方法不能獲取想要的value值
JSONObject jsonObject = JSONObject.fromObject(result); String value = jsonObject.getString("姓名"); System.out.println(value);
使用Gson來進行處理,
首先添加maven依賴
<dependency> <groupId>com.google.code.gson</groupId> <artifactId>gson</artifactId> <version>2.8.2</version> </dependency>
添加包
import com.google.gson.JsonObject; import com.google.gson.JsonParser;
方法
JsonParser jp = new JsonParser(); //將json字符串轉化成json對象 JsonObject jo = jp.parse(result).getAsJsonObject(); //獲取姓名對應的值 String name = jo.get("words_result").getAsJsonObject() .get("姓名").getAsJsonObject() .get("words").getAsString(); System.out.println("姓名:" + name); //獲取性別對應值 String sex = jo.get("words_result").getAsJsonObject() .get("性別").getAsJsonObject() .get("words").getAsString(); System.out.println("性別:" + sex); //獲取民族對應值 String nation = jo.get("words_result").getAsJsonObject() .get("民族").getAsJsonObject() .get("words").getAsString(); System.out.println("民族:" + nation); //獲取住址對應值 String address = jo.get("words_result").getAsJsonObject() .get("住址").getAsJsonObject() .get("words").getAsString(); System.out.println("住址:" + address); //獲取出生日期對應值 String birth = jo.get("words_result").getAsJsonObject() .get("出生").getAsJsonObject() .get("words").getAsString(); System.out.println("出生日期:" + birth); //獲取身份證對應值 String id = jo.get("words_result").getAsJsonObject() .get("公民身份號碼").getAsJsonObject() .get("words").getAsString(); System.out.println("姓名:" + id);
輸出結果
參考:java 獲取json字符串中key對應的值 - 小貓釣魚吃魚 - 博客園 (cnblogs.com)