Hi,

          I have a problem with Json parsing and getting a particular value.Please help me how to get. First time I am working on this Json in salesforce.

In my controller I wrote a code like this

string url='http://maps.googleapis.com/maps/api/distancematrix/json?origins='+EncodingUtil.urlEncode(add1,'UTF-8')+'&destinations='+EncodingUtil.urlEncode(add2,'UTF-8')+'&mode=driving&language=en&sensor=false&units=imperial';
Http h = new Http();
HttpRequest req = new HttpRequest();

req.setHeader('Content-type', 'application/x-www-form-urlencoded');
req.setHeader('Content-length', '0');
req.setEndpoint(url);
req.setMethod('POST');

HttpResponse res = h.send(req);
String responseBody = res.getBody();

JSONParser parser =System.JSON.createParser(responseBody);

// Here I am unable to parse and get the values using Json.
while (parser.nextToken() != null) {
if ((parser.getCurrentToken() == JSONToken.FIELD_NAME) &&
(parser.getText() == 'text')) {
System.debug('##########'+parser.getText());
parser.nextToken();

}
}

=============================================

In Response Body I am getting the Output of Json Like

{
"destination_addresses" : [ "Vijayawada, Andhra Pradesh, India" ],
"origin_addresses" : [ "Hyderabad, Andhra Pradesh, India" ],
"rows" : [
{
"elements" : [
{
"distance" : {
"text" : "173 mi",
"value" : 278118
},
"duration" : {
"text" : "4 hours 33 mins",
"value" : 16386
},
"status" : "OK"
}
]
}
],
"status" : "OK"
}

From the above I have to get the Distance --Text value i.e '173 mi'

How to get the Distance value.Can any one Guide me please.