CODEWITHSUNDEEP
javajson
Abdullah Chougle
Abdullah Chougle

Reputation: 13

JSON object with place holders

I have a use case where I have to create a JSON object with place holders in my java application. The following JSON object has attribute1 and attribute3 required to resolved in my other microservice that has a register of these placeholders.

{ 
  "Attribute1": "myPlaceholder1"
  "Attribute2": "Value of Attribute 2"
  "Attribute3": "myPlaceholder2"...
}

I have a registry with the corresponding placeholder values to replace.

Place holder id Place holder value
myPlaceholder1 U1
myPlaceholder2 U2

Is there a java/JSON library that allows me to define placeholders and allow me to replace these values at runtime?

Thanks!

Upvotes: 0

Views: 280

Answers (1)

Abned
Abned

Reputation: 315

Here is my solution for your problem:

try {
    String input = "{\"attr1\":\"value1\", \"attr2\":\"value2\"}";
    Map<String, String> data = new HashMap<>();
    // this mapper is an instance of ObjectMapper from Spring (jackson library)
    data = mapper.readValue(input, data.getClass());
    System.out.println(data.toString());
    // here you can manipulate data and serialize it to string again if needed
} catch (JsonProcessingException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

Take a note that the readValue has a warning but you can ignore it by SuppressWarning("unchecked").

Upvotes: 1

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