我对 C++ 非常陌生，我正在尝试使用 jsoncpp 从数组中获取天气信息。
json 字符串如下所示:
{"coord":{"lon":139,"lat":35},
"sys":{"country":"JP","sunrise":1369769524,"sunset":1369821049},
"weather":[{"id":804,"main":"clouds","description":"overcast clouds","icon":"04n"}],
"main":{"temp":289.5,"humidity":89,"pressure":1013,"temp_min":287.04,"temp_max":292.04},
"wind":{"speed":7.31,"deg":187.002},
"rain":{"3h":0},
"clouds":{"all":92},
"dt":1369824698,
"id":1851632,
"name":"Shuzenji",
"cod":200}
解析json数组没问题，下面是相关代码:
Json::Value root;
Json::Reader reader;
bool parsingSuccessful = reader.parse( data.c_str(), root );
if ( !parsingSuccessful )
{
std::cout << "Failed to parse"
<< reader.getFormattedErrorMessages();
return 0;
}
std::cout << root.get("description", "n/a" ).asString() << std::endl;
但我仍然以 n/a 结尾。我希望能够访问“天气”数组中的“描述”字段。我该怎么做？
最佳答案
这个有用吗？
const Json::Value weather = root["weather"];
for ( int index = 0; index < weather.size(); ++index )
{
std::cout << weather[index]["description"].asString();
}
关于c++ - 从 JSON 数组获取天气，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37360294/