如何UTF-8编码一个字符串？ [英] How to UTF-8 encode a string?

问题描述

你好，

我正在按照以下方式进行utf-8编码。

字符串消息;
< br $>
UTF8Encoding utf8 = new UTF8Encoding（）;


Byte [] encodedBytes = utf8.GetBytes（message）;


message = encodedBytes.ToString（）;


有人可以纠正我吗？


非常感谢


JJ

解决方案

jens Jensen写道：

你好，
我在做utf-8编码方式如下。
字符串消息;

UTF8Encoding utf8 = new UTF8Encoding（）;


请注意，您可以使用Encoding.UTF8Encoding来避免每次都创建一个新的

实例。

Byte [] encodedBytes = utf8.GetBytes（消息）;
message = encodedBytes.ToString（）;

有人可以纠正我吗？

嗯，你期待的消息是什么？ .NET中的所有字符串都是

UTF-16编码。没有办法解决这个问题（并且它确实不是一个问题）。


你能给我们更多的背景吗？当您想要将文本表示转换为文本的二进制表示时，通常需要编码 - 例如，例如
将一些文本写入流。你想在这里做什么？
在这里做什么？


Jon

>你能给我们更多的背景吗？当

想要从文本表示转换为文本的二进制表示时，通常需要编码 - 例如将一些文本写入流。你想在这做什么？

Jon

我Jon，

我需要通过HTTP POST将数据发布到Web服务。


webservice需要utf-8编码数据。我的POST目前因此而失败

。


非常感谢

JJ

jens Jensen写道：

你能给我们更多的背景吗？当您想要从文本表示转换为文本的二进制表示时，通常需要编码 - 例如将一些文本写入流。你想在这做什么？

我Jon，
我需要将数据发布到HTTP服务的网络服务。
Web服务需要utf-8编码数据。我的POST因此而失败
。

对。所以，你需要像你一样获取字节，然后将那些

写入请求流。


Jon

hello,
i''m doing utf-8 encoding the following way.
string message;

UTF8Encoding utf8 = new UTF8Encoding();

Byte[] encodedBytes = utf8.GetBytes(message);

message = encodedBytes.ToString();

can someone correct me?

many thanks

JJ

解决方案

jens Jensen wrote:

hello,
i''m doing utf-8 encoding the following way.
string message;

UTF8Encoding utf8 = new UTF8Encoding();
Note that you can use Encoding.UTF8Encoding to avoid creating a new
instance each time.
Byte[] encodedBytes = utf8.GetBytes(message);
message = encodedBytes.ToString();

can someone correct me?

Well, what are you expecting message to be? All strings in .NET are
UTF-16 encoded. There''s no way round that (and it''s not really a
problem).

Could you give us more context? Normally encoding is required when you
want to convert from a text representation to a binary represenation of
that text - e.g. to write some text to a stream. What are you trying to
do here?

Jon

> Could you give us more context? Normally encoding is required when you

want to convert from a text representation to a binary represenation of
that text - e.g. to write some text to a stream. What are you trying to
do here?

Jon

I Jon,
I need to post data to web service vis HTTP POST.

The webservice requires utf-8 encoded data. My "POST" is currently failing
due to this.

Many thanks
JJ

jens Jensen wrote:

Could you give us more context? Normally encoding is required when you
want to convert from a text representation to a binary represenation of
that text - e.g. to write some text to a stream. What are you trying to
do here?

I Jon,
I need to post data to web service vis HTTP POST.

The webservice requires utf-8 encoded data. My "POST" is currently failing
due to this.

Right. So, you need to get the bytes as you did, and then write those
to the request stream.

Jon

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