How to check if a key exists in Json Object and get its value

dev90 :

Let say this is my JSON Object

{
  "LabelData": {
    "slogan": "AWAKEN YOUR SENSES",
    "jobsearch": "JOB SEARCH",
    "contact": "CONTACT",
    "video": "ENCHANTING BEACHSCAPES",
    "createprofile": "CREATE PROFILE"
  }
}

I need to know that either 'video` exists or not in this Object, and if it exists i need to get the value of this key. I have tried following, but i am unable to get value of this key.

 containerObject= new JSONObject(container);
 if(containerObject.hasKey("video")){
  //get Value of video
}

Chetan Joshi :

Use below code to find key is exist or not in JsonObject. has("key") method is used to find keys in JsonObject.

containerObject = new JSONObject(container);
//has method
if (containerObject.has("video")) {
    //get Value of video
    String video = containerObject.optString("video");
}

If you are using optString("key") method to get String value then don't worry about keys are existing or not in the JsonObject.

Guess you like

Origin http://10.200.1.11:23101/article/api/json?id=430009&siteId=1

How to check if a key exists in Json Object and get its value

javascript get json object key name and value

How to retrieve whole JSON object with key value?

How to check if an object exists in js

How to create json object with key and value, where value is array

How to convert json object into map key-value pair in Java

Get key from object of value

How to check the value of an iteration object

The key is not how to take value json

jquery check if an object exists

Check if a property exists in an object

java get the Map object according to value key

How do I get the nested key element in a JSON object, using org.json?

JS extracts the Json array to get the key: "value"

Get the attribute key of the json object in js

Get value from key of parent and pass it to children key in object

Java Hashmap: how to get the key from the value of?

How to get key and value of map in java

How to get a certain value of a certain key in dictionary?

How to get key and value of map in java

Python dictionary: how to get the value corresponding to the key

How to get Json Object from json Array?

How to delete json key-value pairs

After the Ajax JSON parsing Map obtain the key and value, check the mailbox

How to get each value from JSON string

How do I get the key by knowing its values in flutter?

How do I get the key by knowing its values in flutter?

WebDriver how to check if an element exists?

How to check whether the object has a key in JavaScript? [repeat]

Are there any ways to check whether a key exists with RedisTemplate?