使用 cpprestsdk 在 linux 上编译 wstring 时出现问题

Question

我有这样的代码

using namespace web;                
using namespace http;   

const http_response& response = /*valid assignment*/
http_headers::const_iterator it = response.headers().find(L"SomeKey");
if (it != response.headers().end())
    {
        //doing something
    }

response 有有效数据。它正在使用 windows 进行编译。我想用 g++ 在 Linux 中编译相同的片段。我该如何处理？我需要添加一些编译标志吗？我得到这样的错误：

 error: no matching function for call to ‘web::http::http_headers::find(const wchar_t [17]) const’
   http_headers::const_iterator it = response.headers().find(L"SomeKey");
                                                                       ^

Answer 1

该项目对 windows 使用 wstring，对 Linux 使用 string。他们提供了一个类型 string_t 和一个宏 U 来帮助处理这个问题，您的代码需要更改为在 Windows 和 Linux.[=20 上编译=]

What is utility::string_t and the 'U' macro? The C++ REST SDK uses a different string type dependent on the platform being targeted. For example for the Windows platforms utility::string_t is std::wstring using UTF-16, on Linux std::string using UTF-8. The 'U' macro can be used to create a string literal of the platform type. If you are using a library causing conflicts with the 'U' macro, for example Boost.Iostreams it can be turned off by defining the macro '_TURN_OFF_PLATFORM_STRING' before including the C++ REST SDK header files.

看到这个FAQ

典型用法：

static const utility::string_t wl_birthday = U("wl.birthday");
static const utility::string_t wl_basic = U("wl.basic");

对于您的代码：

http_headers::const_iterator it = response.headers().find(U("SomeKey"));

有关此项目的 status 的警告：

cpprestsdk is in maintenance mode and we do not recommend its use in new projects. We will continue to fix critical bugs and address security issues.

使用 cpprestsdk 在 linux 上编译 wstring 时出现问题

problem with compiling wstring on linux with cpprestsdk

c++

linux

cpprest-sdk