如何使用gson解析包含列表的json字符串？

Question

How do I parse this particular json string with Gson in Java?

{"orders":[{"oid":"347","status":"1"},{"oid":"348","status":"1"}],"a":14.15,"b":0}

What is problematic is the orders list.

I suppose one has to use a "type token" parameter to Gson.parse(json,type-toke), but it is not clear to me how this can be done.

Answer 1

You have to create java types that it can be mapped to. So, you would have something like this.

public class Result {
    private List<Order> orders;
    private Number a;
    private Number b;

    // getter and setter for orders, a, and b
}

public class Order {
    private Number oid;
    private Number status;
    // getter and setter for oid and status
}

Then you can just do the parsing with something like

Result result = gson.fromJson( yourSring, Result.class );

caveat, this is uncompiled, untested code, but should get you close.

Answer 2

Now, you can use json-path in java, see document. It's simple and clever. http://code.google.com/p/json-path/