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javajsonsocial-networking

How to decode a json string with gson in java?

I have a json string (the stream of social network Qaiku). How can I decode it in Java? I've searched but any results work for me. Thank you.

Solution

  • As an example using Gson, you could do the following

    Gson gson = new Gson();
gson.fromJson(value, type);

    where value is your encoded value. The trick comes with the second parameter - the type. You need to know what your decoding and what Java type that JSON will end in.

    The following example shows decoding a JSON string into a list of domain objects called Table:

    http://javastorage.wordpress.com/2011/03/31/how-to-decode-json-with-google-gson-library/

    In order to do that the type needs to be specified as:

    Type type = new TypeToken<List<Table>>(){}.getType();

    Gson is available here:

    http://code.google.com/p/google-gson/