rapidjson是腾讯开源的解析json的高效c++库，这里做个简单的封装，除去每次解析时都要先判断结点是否存在再读取的麻烦

github地址

因为是封装，所以依赖rapidjson，请自行下载rapidjson源码，使用示例如下

const char *JSON = "{" ""double":100.11," ""int":200," ""str":"Hello World"," ""bool":false" "}";

rapidjson::Document d;

d.Parse(JSON);

if (d.HasParseError()) { printf( "parse error!\n" ); return -1; }

uint32_t uvalue;

assert(!Wrapidjson::GetUint(d, "uintvalue", &uvalue));

assert(Wrapidjson::HasDouble(d, "double"));

double dvalue;

assert(Wrapidjson::GetDouble(d, "double", &dvalue));

assert(dvalue == 100.11);

assert(!Wrapidjson::HasDouble(d, "int"));

int ivalue;

assert(Wrapidjson::GetInt(d, "int", &ivalue));

assert(ivalue == 200);

bool bvalue;

assert(Wrapidjson::GetBool(d, "bool", &bvalue));

assert(bvalue == false);

std::string svalue;

assert(Wrapidjson::GetString(d, "str", &svalue));

assert(svalue == std::string("Hello World"));

作者：帅得不敢出门