java - Assistance with JSON from URL -


i trying fetch json url in java, , output results. here json, www.thebluealliance.com/api/v2/match/2015arc_qm1. want match_number, , scores blue , red alliances, , print console. using gson (google json). example, want code return 1, 91, 97... 

{   "comp_level": "qm",   "match_number": 1,   "videos": [],   "time_string": null,   "set_number": 1,   "key": "2015arc_qm1",   "time": 1429795800,   "score_breakdown": {     "blue": {       "auto": 0,       "foul": 12     },     "red": {       "auto": 0,       "foul": 0     }   },   "alliances": {     "blue": {       "score": 91,       "teams": [         "frc1706",         "frc2907",         "frc2363"       ]     },     "red": {       "score": 97,       "teams": [         "frc2914",         "frc360",         "frc207"       ]     }   },   "event_key": "2015arc" }

my java code can found below

gson gson = new gson(); string surl = "http://www.thebluealliance.com/api/v2/match/2015arc_qm                 1?x-tba-app-id=frc1810:alex-webber:v01"; url url = new url(surl); httpurlconnection request = (httpurlconnection) url.openconnection(); request.connect(); jsonparser jp = new jsonparser(); jsonelement root = jp.parse(new inputstreamreader((inputstream) request                 .getcontent())); jsonobject rootobj = root.getasjsonobject(); jsonelement results = rootobj                 .getasjsonobject().get("match_number")                 .getasjsonobject().getasjsonarray("alliances").get(4)                 .getasjsonobject().getasjsonarray("blue").getasjsonobject().get("score"); string match = results.getasstring();

try out, did not test it, see in json document, have couple of issues in code, alliances not json array, blue , red not json arrays, json objects based on see in json document,

jsonobject rootobj = root.getasjsonobject(); jsonelement match_number = rootobj.get("match_number"); jsonobject alliances = rootobj.getasjsonobject("alliances"); jsonelement blue = alliances.getasjsonobject("blue").get("score"); jsonelement red  = alliances.getasjsonobject("red").get("score");  system.out.println(match_number.getasstring()+","+blue.getasstring()+","+red.getasstring());

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