How to Extract 'translatedText' from a JSON String Using Gson in Java?

JSON Parsing in Java Using Gson

Query:

How to parse JSON data in string form? The specific scenario is to use Google's Gson library.

Example input:

jsonLine = "
{
 "data": {
  "translations": [
   {
    "translatedText": "Hello world"
   }
  ]
 }
}
";

Goal:

Extract "translatedText" from the given JSON string : "Hello world".

Answer:

public String parse(String jsonLine) {
    JsonElement jelement = new JsonParser().parse(jsonLine);
    JsonObject jobject = jelement.getAsJsonObject();
    jobject = jobject.getAsJsonObject("data");
    JsonArray jarray = jobject.getAsJsonArray("translations");
    jobject = jarray.get(0).getAsJsonObject();
    String result = jobject.get("translatedText").getAsString();
    return result;
}

Points:

• Use JsonParser to parse the JSON string.
• Get the root JSON object and navigate to the data object.
• Cast the data object into a JSON array.
• Get the first JSON object in the array.
• Get the translatedText value from this object.
• Convert it to a string and return it.

Use of generalization:

Gson’s JavaDoc documentation is clear and helps us understand how to do more general JSON parsing.

The above is the detailed content of How to Extract 'translatedText' from a JSON String Using Gson in Java?. For more information, please follow other related articles on the PHP Chinese website!