We are doing some integration towards a quite inconsistent (Zurmo-)REST API. The API only accepts urlencoded strings as its payload in the http posts, but it answers with JSON.
As noted below, it's not a Java library but you should be able to translate it :)
Here's how you could do it in javascript:
var jsonArrayToUrl = function (obj, prefix) {
var urlString = "";
for (var key in obj) {
if (obj[key] !== null && typeof obj[key] == "object") {
prefix += "[" + key + "]";
urlString += jsonArrayToUrl(obj[key], prefix);
}else{
urlString += prefix + "[" + key + "]=" + obj[key] + "&";
}
}
return encodeURIComponent(urlString);
};
Then call it with
jsonArrayToUrl(test["data"], "data");
By the example string you gave above it returns
"data%5Bdescription%5D%3Dtest%26data%5BoccurredOnDateTime%5D%3D2013-10-24%2001%3A44%3A50%26"
It should work recursively on nested arrays. You might also consider writing a wrapper for the function so that you only need one argument.