我目前正在尝试为纳斯达克、道琼斯和标准普尔 500 指数创建股票图表。我找不到任何 API（在合理定价范围内）来创建此图表，因此我一直在尝试使用 Yahoo Finance Chart API。它目前支持 JSON、CSV 和 XML。解析 XML 或 CSV 时性能不太理想，因此我想使用 JSON 响应，但遇到了问题。 JSON 响应实际上并未返回有效的 JSON。有没有人对如何在 iOS 中解析这个有任何见解或有其他建议？
这是 JSON 网址： http://chartapi.finance.yahoo.com/instrument/1.1/%5EIXIC/chartdata;type=close;range=1d/json/
【问题讨论】：
标签： iphone ios json ipad yahoo-finance
更新：
确实，响应也是格式错误的。我尝试了使用不同股票代码的 URL，它看起来在previous_close 字段的输出中有一个杂散的" 标记。如果您删除了流浪的" 标记，它应该可以正确验证。
"meta" :
{
"uri" :"/instrument/1.1/ITW/chartdata;type=close;range=1d/json/?callback=",
"ticker" : "itw",
"unit" : "MIN",
"timezone" : "EST",
"currency" : "USD",
"gmtoffset" : -18000,
"previous_close" : 62.9000"
}
~
原文：
返回的响应是 JSONP 格式。
finance_charts_json_callback( {
...
} )
即兴发挥，您应该能够从开头剥离 finance_charts_json_callback( 并从结尾剥离尾随 )，并最终得到有效的 JSON 数据。
【讨论】：
如果您使用的是 iOS 5 或更高版本，您可以为此使用 NSJSONSerialization。
NSData *data = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
id json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
但问题是如果 JSON 无效，您将无法使用 NSJSONSerialization 对其进行解析
我已成功将其更改为有效的 JSON，例如：
{
"finance_charts_json_callback": {
"meta": {
"uri": "/instrument/1.1/^IXIC/chartdata;type=close;range=1d/json/",
"ticker": "^ixic",
"unit": "MIN",
"timezone": "EST",
"currency": "USD",
"gmtoffset": -18000,
"previous_close": "3179.1001"
},
"Timestamp": {
"min": 1359988200,
"max": 1360011600
},
"labels": [
1359990000,
1359993600,
1359997200,
1360000800,
1360004400,
1360008000,
1360011600
],
"ranges": {
"close": {
"min": 3131.04,
"max": 3168.8701
}
},
"series": [
{
"Timestamp": 1359988218,
"close": 3160.5601
},
{
"Timestamp": 1359997260,
"close": 3139.6799
},
{
"Timestamp": 1359997320,
"close": 3139.55
},
{
"Timestamp": 1359997380,
"close": 3140.3501
},
{
"Timestamp": 1359997440,
"close": 3140.0601
},
{
"Timestamp": 1359997500,
"close": 3140.0601
},
{
"Timestamp": 1359997560,
"close": 3140.1599
},
{
"Timestamp": 1359997620,
"close": 3139.1799
},
{
"Timestamp": 1359997680,
"close": 3137.1899
},
{
"Timestamp": 1359997740,
"close": 3135.71
},
{
"Timestamp": 1359997800,
"close": 3136.54
},
{
"Timestamp": 1359997860,
"close": 3136.78
},
{
"Timestamp": 1359997920,
"close": 3137.74
},
{
"Timestamp": 1359997980,
"close": 3139.3301
},
{
"Timestamp": 1359998040,
"close": 3139.2
},
{
"Timestamp": 1359998100,
"close": 3139.0701
},
{
"Timestamp": 1359998160,
"close": 3139.04
},
{
"Timestamp": 1359998220,
"close": 3139.54
},
{
"Timestamp": 1359998280,
"close": 3139.8301
},
{
"Timestamp": 1359998340,
"close": 3139.51
},
{
"Timestamp": 1359998400,
"close": 3139.8
},
{
"Timestamp": 1359998460,
"close": 3139.97
},
{
"Timestamp": 1359998520,
"close": 3138.78
},
{
"Timestamp": 1359998580,
"close": 3138.1699
},
{
"Timestamp": 1359998640,
"close": 3138.75
},
{
"Timestamp": 1359998700,
"close": 3139.78
},
{
"Timestamp": 1359998760,
"close": 3140.4299
},
{
"Timestamp": 1359998820,
"close": 3141.01
},
{
"Timestamp": 1359998880,
"close": 3141.2
},
{
"Timestamp": 1359998999,
"close": 3141.0701
},
{
"Timestamp": 1359999000,
"close": 3141.47
},
{
"Timestamp": 1359999060,
"close": 3141.79
},
{
"Timestamp": 1359999120,
"close": 3141.8201
},
{
"Timestamp": 1359999180,
"close": 3141.8701
},
{
"Timestamp": 1359999240,
"close": 3141.72
},
{
"Timestamp": 1359999300,
"close": 3141.04
},
{
"Timestamp": 1359999360,
"close": 3142.0801
},
{
"Timestamp": 1359999420,
"close": 3141.9099
},
{
"Timestamp": 1359999480,
"close": 3142.4199
},
{
"Timestamp": 1359999540,
"close": 3142.97
},
{
"Timestamp": 1359999600,
"close": 3142.6899
},
{
"Timestamp": 1359999660,
"close": 3143.3899
},
{
"Timestamp": 1359999720,
"close": 3143.1599
},
{
"Timestamp": 1359999780,
"close": 3143.45
},
{
"Timestamp": 1359999840,
"close": 3143.26
},
{
"Timestamp": 1359999900,
"close": 3143.1699
},
{
"Timestamp": 1359999960,
"close": 3142.4099
},
{
"Timestamp": 1360000020,
"close": 3142.1799
},
{
"Timestamp": 1360000080,
"close": 3142
},
{
"Timestamp": 1360000140,
"close": 3142.28
},
{
"Timestamp": 1360000200,
"close": 3142.22
},
{
"Timestamp": 1360000260,
"close": 3141.75
},
{
"Timestamp": 1360000320,
"close": 3140.8101
},
{
"Timestamp": 1360000380,
"close": 3140.4399
},
{
"Timestamp": 1360000440,
"close": 3140.2
},
{
"Timestamp": 1360000500,
"close": 3140.3201
},
{
"Timestamp": 1360000560,
"close": 3140.1899
},
{
"Timestamp": 1360000620,
"close": 3140.4199
},
{
"Timestamp": 1360000680,
"close": 3140.21
},
{
"Timestamp": 1360000740,
"close": 3140.48
},
{
"Timestamp": 1360000800,
"close": 3140.1001
},
{
"Timestamp": 1360000860,
"close": 3140.3501
},
{
"Timestamp": 1360000920,
"close": 3140.6101
},
{
"Timestamp": 1360000980,
"close": 3140.24
},
{
"Timestamp": 1360001040,
"close": 3141.0601
},
{
"Timestamp": 1360001100,
"close": 3141.27
},
{
"Timestamp": 1360001160,
"close": 3141.5701
},
{
"Timestamp": 1360001220,
"close": 3141.6001
},
{
"Timestamp": 1360001280,
"close": 3142.8601
},
{
"Timestamp": 1360001340,
"close": 3142.8401
},
{
"Timestamp": 1360001400,
"close": 3142.6399
},
{
"Timestamp": 1360001460,
"close": 3142.8701
},
{
"Timestamp": 1360001520,
"close": 3143.1001
},
{
"Timestamp": 1360001580,
"close": 3142.8501
},
{
"Timestamp": 1360001640,
"close": 3142.8
},
{
"Timestamp": 1360001700,
"close": 3142.5901
},
{
"Timestamp": 1360001760,
"close": 3140.8501
},
{
"Timestamp": 1360001820,
"close": 3140.5
},
{
"Timestamp": 1360001880,
"close": 3140.77
},
{
"Timestamp": 1360001940,
"close": 3141.8201
},
{
"Timestamp": 1360002000,
"close": 3141.71
},
{
"Timestamp": 1360002060,
"close": 3141.9399
},
{
"Timestamp": 1360002120,
"close": 3142.49
},
{
"Timestamp": 1360002180,
"close": 3142.1399
},
{
"Timestamp": 1360002240,
"close": 3142.6499
},
{
"Timestamp": 1360002300,
"close": 3142.3999
},
{
"Timestamp": 1360002360,
"close": 3141.72
},
{
"Timestamp": 1360002420,
"close": 3141.77
},
{
"Timestamp": 1360002480,
"close": 3141.1799
},
{
"Timestamp": 1360002540,
"close": 3139.8301
},
{
"Timestamp": 1360002600,
"close": 3139.8501
},
{
"Timestamp": 1360002660,
"close": 3138.25
},
{
"Timestamp": 1360002720,
"close": 3138.74
},
{
"Timestamp": 1360002780,
"close": 3138.3799
},
{
"Timestamp": 1360002840,
"close": 3138.2
},
{
"Timestamp": 1360002900,
"close": 3138.24
},
{
"Timestamp": 1360002960,
"close": 3138.99
},
{
"Timestamp": 1360003020,
"close": 3138.8401
},
{
"Timestamp": 1360003080,
"close": 3138.5801
},
{
"Timestamp": 1360003140,
"close": 3138.3301
},
{
"Timestamp": 1360003200,
"close": 3139.0801
},
{
"Timestamp": 1360003260,
"close": 3139.25
},
{
"Timestamp": 1360003320,
"close": 3139.05
},
{
"Timestamp": 1360003380,
"close": 3139.03
},
{
"Timestamp": 1360003440,
"close": 3138.99
},
{
"Timestamp": 1360003500,
"close": 3137.99
},
{
"Timestamp": 1360003560,
"close": 3137.3601
},
{
"Timestamp": 1360003679,
"close": 3135.8799
},
{
"Timestamp": 1360003680,
"close": 3136
},
{
"Timestamp": 1360003740,
"close": 3136.49
},
{
"Timestamp": 1360003800,
"close": 3136.52
},
{
"Timestamp": 1360003860,
"close": 3135.3899
},
{
"Timestamp": 1360003920,
"close": 3135.77
},
{
"Timestamp": 1360003980,
"close": 3135.8501
},
{
"Timestamp": 1360004040,
"close": 3136.47
},
{
"Timestamp": 1360004100,
"close": 3136.4299
},
{
"Timestamp": 1360004160,
"close": 3137.46
},
{
"Timestamp": 1360004220,
"close": 3137.7
},
{
"Timestamp": 1360004280,
"close": 3137.55
},
{
"Timestamp": 1360004340,
"close": 3137.6599
},
{
"Timestamp": 1360004400,
"close": 3136.26
},
{
"Timestamp": 1360004460,
"close": 3136.6101
},
{
"Timestamp": 1360004520,
"close": 3137.02
},
{
"Timestamp": 1360004580,
"close": 3137.54
},
{
"Timestamp": 1360004640,
"close": 3138.21
},
{
"Timestamp": 1360004700,
"close": 3137.9199
},
{
"Timestamp": 1360004760,
"close": 3137.9299
},
{
"Timestamp": 1360004820,
"close": 3138.3201
},
{
"Timestamp": 1360004880,
"close": 3138.3201
},
{
"Timestamp": 1360004940,
"close": 3137.5801
},
{
"Timestamp": 1360005000,
"close": 3138.0701
},
{
"Timestamp": 1360005060,
"close": 3138.3301
},
{
"Timestamp": 1360005120,
"close": 3138.3701
},
{
"Timestamp": 1360005180,
"close": 3138.26
},
{
"Timestamp": 1360005240,
"close": 3138.23
},
{
"Timestamp": 1360005300,
"close": 3138.5
},
{
"Timestamp": 1360005360,
"close": 3139.23
},
{
"Timestamp": 1360005420,
"close": 3139.1899
},
{
"Timestamp": 1360005480,
"close": 3138.75
},
{
"Timestamp": 1360005540,
"close": 3137.6799
},
{
"Timestamp": 1360005600,
"close": 3139.03
},
{
"Timestamp": 1360005660,
"close": 3138.46
},
{
"Timestamp": 1360005720,
"close": 3138.05
},
{
"Timestamp": 1360005780,
"close": 3137.96
},
{
"Timestamp": 1360005840,
"close": 3138.1101
},
{
"Timestamp": 1360005900,
"close": 3136.8701
},
{
"Timestamp": 1360005960,
"close": 3136.71
},
{
"Timestamp": 1360006020,
"close": 3136.73
},
{
"Timestamp": 1360006080,
"close": 3138.22
},
{
"Timestamp": 1360006140,
"close": 3139.8501
},
{
"Timestamp": 1360006200,
"close": 3140.49
},
{
"Timestamp": 1360006260,
"close": 3140.8201
},
{
"Timestamp": 1360006320,
"close": 3139.8401
},
{
"Timestamp": 1360006380,
"close": 3140.28
},
{
"Timestamp": 1360006440,
"close": 3139.73
},
{
"Timestamp": 1360006500,
"close": 3139.3
},
{
"Timestamp": 1360006560,
"close": 3140.1599
},
{
"Timestamp": 1360006620,
"close": 3139.6299
},
{
"Timestamp": 1360006680,
"close": 3140.0901
},
{
"Timestamp": 1360006740,
"close": 3140.24
},
{
"Timestamp": 1360006800,
"close": 3140.3101
},
{
"Timestamp": 1360006860,
"close": 3140.8401
},
{
"Timestamp": 1360006920,
"close": 3140.95
},
{
"Timestamp": 1360006980,
"close": 3140.8799
},
{
"Timestamp": 1360007040,
"close": 3142.1101
},
{
"Timestamp": 1360007100,
"close": 3142.1399
},
{
"Timestamp": 1360007160,
"close": 3141.8301
},
{
"Timestamp": 1360007220,
"close": 3141.0701
},
{
"Timestamp": 1360007280,
"close": 3140.99
},
{
"Timestamp": 1360007340,
"close": 3140.79
},
{
"Timestamp": 1360007400,
"close": 3141.1499
},
{
"Timestamp": 1360007460,
"close": 3140.76
},
{
"Timestamp": 1360007520,
"close": 3139.6499
},
{
"Timestamp": 1360007580,
"close": 3140.0701
},
{
"Timestamp": 1360007640,
"close": 3140.51
},
{
"Timestamp": 1360007700,
"close": 3140.98
},
{
"Timestamp": 1360007760,
"close": 3141.3601
},
{
"Timestamp": 1360007820,
"close": 3142.46
},
{
"Timestamp": 1360007880,
"close": 3143.3899
},
{
"Timestamp": 1360007940,
"close": 3143.24
},
{
"Timestamp": 1360008000,
"close": 3142.01
},
{
"Timestamp": 1360008060,
"close": 3142.02
},
{
"Timestamp": 1360008120,
"close": 3141.0701
},
{
"Timestamp": 1360008180,
"close": 3141.25
},
{
"Timestamp": 1360008240,
"close": 3141.3999
},
{
"Timestamp": 1360008300,
"close": 3141.3799
},
{
"Timestamp": 1360008360,
"close": 3141.74
},
{
"Timestamp": 1360008420,
"close": 3141.96
},
{
"Timestamp": 1360008480,
"close": 3141.3201
},
{
"Timestamp": 1360008540,
"close": 3140.79
},
{
"Timestamp": 1360008600,
"close": 3140.8201
},
{
"Timestamp": 1360008660,
"close": 3140.73
},
{
"Timestamp": 1360008720,
"close": 3139.6299
},
{
"Timestamp": 1360008780,
"close": 3139.54
},
{
"Timestamp": 1360008840,
"close": 3140.29
},
{
"Timestamp": 1360008900,
"close": 3140.3899
},
{
"Timestamp": 1360008960,
"close": 3140
},
{
"Timestamp": 1360009020,
"close": 3140.04
},
{
"Timestamp": 1360009080,
"close": 3139.8101
},
{
"Timestamp": 1360009140,
"close": 3140.1799
},
{
"Timestamp": 1360009200,
"close": 3139.9099
},
{
"Timestamp": 1360009260,
"close": 3139.8899
},
{
"Timestamp": 1360009320,
"close": 3140.22
},
{
"Timestamp": 1360009380,
"close": 3140.1899
},
{
"Timestamp": 1360009440,
"close": 3138.8501
},
{
"Timestamp": 1360009500,
"close": 3140.3301
},
{
"Timestamp": 1360009560,
"close": 3141.0901
},
{
"Timestamp": 1360009679,
"close": 3141.97
},
{
"Timestamp": 1360009680,
"close": 3141.7
},
{
"Timestamp": 1360009740,
"close": 3141.73
},
{
"Timestamp": 1360009800,
"close": 3140.1399
},
{
"Timestamp": 1360009860,
"close": 3139.6499
},
{
"Timestamp": 1360009920,
"close": 3138.95
},
{
"Timestamp": 1360009980,
"close": 3138.49
},
{
"Timestamp": 1360010040,
"close": 3138.1001
},
{
"Timestamp": 1360011600,
"close": 3131.5
}
]
}
}
您需要通过使用 NSString 类提供的各种功能替换无效字符并使用jsonlint tool 检查它是否有效。
【讨论】：
您需要按如下方式进行 javascript eval：
window.finance_charts_json_callback(data) { return data; }
let json_resp = eval(resp);
在 ios 中，您可以创建 javascript 解释器并对其进行评估。
【讨论】：