jsoncpp Json::LogicError，当我尝试解析对象时
jsoncpp Json::LogicError，当我尝试解析对象时
提问于 2016-03-04 18:07:12
我有一个Json字符串，如下所示，我需要用C++的jsoncpp库来解析它们；然而，即使我试图解析最简单的键status_code，我也会得到逻辑错误。我解析json的代码是这样的：
Json::Value root = js;
const Json::Value status_code = root["status_code"];其中js是std：：字符串。我打印了根目录，结果看起来很正常，但第二行代码总是出错。此外，我尝试了Json::Value::get方法，但没有任何变化。
{
"status_code": "OK",
"status_msg": "All images in request have completed successfully. ",
"meta": {
"tag": {
"timestamp": 1457008532.462851,
"model": "general-v1.3",
"config": "34fb1111b4d5f67cf1b8665ebc603704"
}
},
"results": [
{
"docid": 161641131401527616156105737996754786562,
"status_code": "OK",
"status_msg": "OK",
"local_id": "",
"result": {
"tag": {
"concept_ids": [
"ai_786Zr311",
"ai_pPxqdnP5",
"ai_Pf2b7clG",
"ai_c9n7SB25",
"ai_WTrlNkqM",
"ai_ggQlMG6W",
"ai_62K34TR4",
"ai_hf5ZBGcK",
"ai_9c0Hmcx0",
"ai_6lhccv44",
"ai_pCnxWJZh",
"ai_bmls4LpL",
"ai_TkWkj1sX",
"ai_rsX6XWc2",
"ai_x3vjxJsW",
"ai_4Qjv5PTH",
"ai_lrTHSPdB",
"ai_bBXFkGB1",
"ai_xxnGcd42",
"ai_PpTcwbdQ"
],
"classes": [
"no person",
"room",
"indoors",
"furniture",
"vehicle",
"industry",
"technology",
"production",
"exhibition",
"business",
"contemporary",
"group",
"container",
"building",
"home",
"modern",
"action",
"auto racing",
"seat",
"computer"
],
"probs": [
0.9784166812896729,
0.9754077196121216,
0.974927544593811,
0.9747141003608704,
0.9636767506599426,
0.954016923904419,
0.9406172633171082,
0.9292353391647339,
0.9243901968002319,
0.911110520362854,
0.8961678147315979,
0.8841571807861328,
0.8797860145568848,
0.8792335987091064,
0.869953989982605,
0.8654355406761169,
0.8574825525283813,
0.8546661734580994,
0.8530611991882324,
0.8511127829551697
]
}
},
"docid_str": "799af313d0500ce2648b9a4e20c49902"
}
]
}回答 1
Stack Overflow用户
发布于 2016-03-04 19:43:06
我通过使用Json::Reader解决了自己的问题。我发布代码是为了帮助其他面临这个问题的人。
我正在使用下面的代码片段获取"classes“标记：
Json::Value root;
Json::Reader reader;
reader.parse(js,root);
const Json::Value classes = root["results"][0]["result"]["tag"]["classes"];页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/35793178
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