rapidjson使用编译报错问题解决

在调用AddMember把std::string类型值直接作为下面的v传入时，必须定义宏RAPIDJSON_HAS_STDSTRING

#define OBJ_ADD_STR_MEMBER(obj,k, v)    do {obj.AddMember(k, v, allocator);} while (0)  // this won't work for std::string, unless you define "RAPIDJSON_HAS_STDSTRING" in your Makefile

例如，下面的代码一直编译报错：

CCarProvinceCityFenceBo.cpp:509:   instantiated from here

/usr/local/include/rapidjson/document.h:1060: error: no matching function for call to 'rapidjson::GenericValue, rapidjson::MemoryPoolAllocator >::GenericValue(std::basic_string, std::allocator >&)'

const std::string & provinceID = itProvinceInfoMap->first;

rapidjson::Value province(kObjectType);

OBJ_ADD_STR_MEMBER(province, "provinceID", provinceID);

通过在scons文件中增加宏定义RAPIDJSON_HAS_STDSTRING，解决了这个编译问题

env.Append(CPPDEFINES = [ 'RAPIDJSON_HAS_STDSTRING'])

或者不定义宏 RAPIDJSON_HAS_STDSTRING，改用如下方式，也能解决

            const std::string & provinceID = itProvinceInfoMap->first;

            rapidjson::Value province(rapidjson::kObjectType);

            rapidjson::Value val;

            item.AddMember("provinceID", val.SetString(provinceID.c_str(), allocator), allocator);