How to write to raw string with jackson 2

Question

I want to write an object to a raw json String. for example i have one class

class Tiger{
    String name;
    int age;
}

Tiger tiger = new Tiger("red", 12);

Then i use ObjectMapper of jackson to write it to string

ObjectMapper objectMapper = new ObjectMapper();
String result = objectMapper.writeValueAsString(tiger);

The result is:

 "{"name":"red","age":12}"

But i want to write the object to raw json string like this:

"{\"name\":\"red\",\"age\":12}"

I know that we can create a function to transform the normal string to raw string by adding "\", but i wonder is there any better solution for this?

1

Nicely written question! – GhostCat Aug 08 '18 at 07:11

ernest_k · Accepted Answer · 2018-08-08T07:18:26.270

4

You can write the output as json again, which will get it escaped:

String result = objectMapper.writeValueAsString(
                      objectMapper.writeValueAsString(tiger));
//outputs: "{\"name\":\"red\",\"age\":12}"

edited Aug 08 '18 at 07:18

answered Aug 08 '18 at 07:13

ernest_k

44,416
5
53
99

score 1 · Answer 2 · answered Aug 08 '18 at 07:18

1

Here you find the solutions

String result ="";
        try {
            result = objectMapper.writeValueAsString(objectMapper.writeValueAsString(tiger));
        } catch (JsonProcessingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        System.out.println(result);

answered Aug 08 '18 at 07:18

Faiz Akram

559
4
10

1

Sorry, I didn't refresh the page while writing the answer on that you just post the answer – Faiz Akram Aug 08 '18 at 07:28

How to write to raw string with jackson 2

2 Answers2