JSONObjectnestedObject=jsonObject.getJSONObject("key");StringnestedValue=nestedObject.getString("nestedKey"); 1. 2. 这里的key是需要获取的字段的名称,通过调用getJSONObject方法,可以获取到嵌套的JSONObject对象,然后通过该对象继续调用get方法获取嵌套的Value。 遍历获取每个元素的Value: 如果Value是JSONArray类型...
Get nested array values Suppose you want all the last names from the following json: {"programmers": [ {"firstName":"Janet","lastName":"McLaughlin", }, {"firstName":"Elliotte","lastName":"Hunter", }, {"firstName":"Jason","lastName":"Harold", } ] } ...
dict):forkey,valueinjson_obj.items():ifkey==target_key:returnvalueelifisinstance(value,(dict,list)):result=get_value_from_nested_json(value,target_key)ifresultisnotNone:returnresultelifisinstance(json_obj,list):foriteminjson_obj:result=get_value_from_nested_json(item,target_key)ifresul...
redisClient.set("json_2","lisi",new Path(".name")); result = redisClient.get("json_2"); System.out.println(result); System.out.println("在数组追加一个值:21"); redisClient.arrAppend("json_2", new Path(".arr"), 21); result = redisClient.get("json_2"); System.out.println(re...
String carJson = "{ \"brand\" : \"Mercedes\", \"doors\" : 5," + " \"owners\" : [\"John\", \"Jack\", \"Jill\"]," + " \"nestedObject\" : { \"field\" : \"value\" } }"; ObjectMapper objectMapper = new ObjectMapper(); try { JsonNode jsonNode = objectMapper.readValu...
Though in either case if the original data is not provided the JSON_OBJECT function call will empty out the nested object's property value(s). But as you can see from the lastJSON_SETquery,$.test1was not provided in the definition ofattributes, and it remained intact, so those properties...
Get nested array values Suppose you want all the last names from the following json: { "programmers": [ { "firstName": "Janet", "lastName": "McLaughlin", }, { "firstName": "Elliotte", "lastName": "Hunter", }, { "firstName": "Jason", "lastName": "Harold", } ] } You woul...
I want to get all the rows from the table which has street value '200'. Below select query is working when we are hard-coding the position (in our case [1]) : select * from MYTABLE where JSON_VALUE(`myclob_column`, $.address[1].street) = '200'; But I can...
String json = "{" + " \"query\": \"Pizza\", " + " \"locations\": [ 94043, 90210 ] " + "}"; JSONObject object = (JSONObject) new JSONTokener(json).nextValue(); String query = object.getString("query"); JSONArray locations = object.getJSONArray("locations"); For...
mysql>insert into videos values(1,'{');ERROR3140(22032): Invalid JSON text:"Missing a name for object member."at position1invalueforcolumn'videos.ext'. 同时还可以使用JSON_VALID()函数查看一个JSON值是否合法: 代码语言:shell 复制 mysql>selectjson_valid('{');+---+|json_valid('{')|+--...