使用 hutool 工具类解析 json 对象

本文主要记录如何使用 hutool 工具类解析 json 对象

1、在 pom 文件内添加 hutool 依赖：

<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.0.6</version>
</dependency>

2、字符串 转 JSONObject

String jsonStr = "{\"DispositionNotificationListObject\":{\"DispositionNotificationObject\":[{\"PersonObject\":{\"GenderCode\":0,\"EthicCode\":0,\"DeviceID\":\"0\",\"SourceID\":\"022019121117052900016\",\"SubImageList\":{\"SubImageInfoObject\":[{\"Type\":\"11\",\"StoragePath\":\"xxx\",\"DeviceID\":\"0\",\"ImageID\":\"022019121117052900016\",\"EventSort\":0,\"ShotTime\":\"19700119134716\",\"Height\":-1,\"FileFormat\":\"jpg\",\"Width\":-1},{\"Type\":\"11\",\"StoragePath\":\"xxx\",\"DeviceID\":\"0\",\"ImageID\":\"022019121117052900016\",\"EventSort\":0,\"ShotTime\":\"19700119134600\",\"Height\":-1,\"FileFormat\":\"jpg\",\"Width\":-1},{\"Type\":\"14\",\"StoragePath\":\"xxx\",\"DeviceID\":\"0\",\"ImageID\":\"022019121117052900016\",\"EventSort\":0,\"ShotTime\":\"19700119134600\",\"Height\":-1,\"FileFormat\":\"jpg\",\"Width\":-1}]},\"LeftTopY\":141,\"LeftTopX\":104,\"Name\":\"图片姓名测试\",\"InfoKind\":1,\"PersonID\":\"0220191211170529000180100019\",\"RightBtmY\":806,\"RightBtmX\":932,\"IDNumber\":\"\"},\"NotificationID\":\"202002031736\",\"DispositionID\":\"71\",\"TriggerTime\":\"2020-02-03 15:34:15\",\"Title\":\"第三方1400告警信息接收测试\"}]}}";
JSONObject json = new JSONObject(jsonStr);

3、解析 JSONObject：

1）获取对象

JSONObject dispositionNotificationListObject = json.getJSONObject("DispositionNotificationListObject");

2）获取单值

String alertPersonName = personObject.getStr("Name");
Integer eventSort = subImageInfoObject.getInt("EventSort");

4、字符串 转 JSONArray

String jsonArrayStr = "[{\"Type\":\"11\",\"StoragePath\":\"http://192.168.166.203:11180/storage/v1/image/global?cluster_id=ShenSi&uri_base64=bm9ybWFsOi8vcmVwb3NpdG9yeS1idWlsZGVyLzIwMjAwMTIwL1ZRQnV1LVlsWFpGd29lN1dJSnlXUmc9PUAx\",\"DeviceID\":\"0\",\"ImageID\":\"022019121117052900016\",\"EventSort\":0,\"ShotTime\":\"19700119134716\",\"Height\":-1,\"FileFormat\":\"jpg\",\"Width\":-1},{\"Type\":\"11\",\"StoragePath\":\"http://192.168.166.203:11180/storage/v1/image/global?cluster_id=ShenSi&uri_base64=bm9ybWFsOi8vcmVwb3NpdG9yeS1idWlsZGVyLzIwMjAwMTIwL0gzc1dYN3lXRmh1Zmd0Sjd6Tlo1cnc9PUAx\",\"DeviceID\":\"0\",\"ImageID\":\"022019121117052900016\",\"EventSort\":0,\"ShotTime\":\"19700119134600\",\"Height\":-1,\"FileFormat\":\"jpg\",\"Width\":-1},{\"Type\":\"14\",\"StoragePath\":\"http://192.168.166.203:11180/storage/v1/image/global?cluster_id=ShenSi&uri_base64=bm9ybWFsOi8vcmVwb3NpdG9yeS1idWlsZGVyLzIwMjAwMTIwL0JXS3RIQm1aVXpUT3prNzJOYW50S1E9PUAx\",\"DeviceID\":\"0\",\"ImageID\":\"022019121117052900016\",\"EventSort\":0,\"ShotTime\":\"19700119134600\",\"Height\":-1,\"FileFormat\":\"jpg\",\"Width\":-1}]";
JSONArray jsonArray = new JSONArray(jsonArrayStr);

5、解析 JSONArray：

1）获取数组对象

JSONArray subImageInfoObjectList = subImageList.getJSONArray("SubImageInfoObject");

2）获取单值

for(int j=0; j< jsonArray.size(); j++){
    JSONObject subImageInfoObject = jsonArray.getJSONObject(j);
    String Type = subImageInfoObject.getStr("Type");
    Integer width = subImageInfoObject.getInt("Width");   
    System.out.println(Type);
}

注：以上代码可能有些值对应不上，本文只是提供一个切实有效的思路，测试代码需要根据示例自我调整。

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