Rapidjson根本不编码utf8序列 [英] Rapidjson does not encode utf8 sequence at all

问题描述

我正在尝试使用Rapidjson将utf8序列转义为\uXXXX格式，但是不起作用.

I'm trying to use rapidjson to escape utf8 sequences to \uXXXX format, but it's not working.

StringBuffer s;
Writer<StringBuffer, Document::EncodingType, ASCII<> > writer(s);
writer.StartObject();
writer.String("chinese");
writer.String("中文测试");
writer.EndObject();
cout << s.GetString() << endl;

文档说它将被转义，但实际上已全部删除.

The document says it would be escaped but actually it's all erased.

我尝试使用AutoUTF模板，但是这里也没有用于内存流的文档

I tried to use AutoUTF template, but here's no document for memory stream either

有什么想法吗?我也尝试过jsoncpp，但是该库也不支持Unicode

Any ideas? I tried jsoncpp as well, but that library does not support unicode as well

感谢@Milo Yip，我忘了提到我正在使用Visual Studio 2010

Thanks @Milo Yip, I forget to mention I'm using Visual Studio 2010

推荐答案

我尝试在OS X上运行，并且有效:

I tried on OS X and it works:

{"chinese":"\u4E2D\u6587\u6D4B\u8BD5"}

我认为问题在于，您使用的编译器未将文字字符串"中文测试"编码为UTF-8. Linux/OSX将源代码视为UTF-8，但Windows默认情况下不会.

I think the problem is that, the compiler you are using does not encode the literal string "中文测试" into UTF-8. Linux/OSX treats source code as UTF-8 but Windows does not by default.

您可以尝试使用C ++ 11 UTF-8文字u8"中文测试".或者，您可以从UTF-8编码的文件中读取字符串以进行测试.

You can try to use C++11 UTF-8 literal u8"中文测试". Or you can read the strings from a UTF-8 encoded file for testing.

问题已更新.在Visual Studio 2010及更高版本上，有一个未记录的功能:

The question was updated. On Visual Studio 2010 and after, there is an undocumented feature:

#pragma execution_character_set("utf-8")

诸如此类，文字字符以UTF-8编码.对于兼容C ++ 11的编译器，应使用u8"xxx"文字.

Such that the literal characters are encoded in UTF-8. For C++11 compatible compilers, u8"xxx" literal should be used.

无论如何，"Rapidjson根本不编码utf8序列"的说法是错误的.

Anyway, the claim that "Rapidjson does not encode utf8 sequence at all" is incorrect.

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