更改 HttpServletResponse 的编码

发布于 2024-08-13 17:19:24 字数 357 浏览 2 评论 0原文

我有一个返回 XML 的 API，它实际上使用默认编码（我相信它是 UTF-8）返回它，但现在要求已经改变，我们需要以 UTF-16LE 返回所有内容。

我的问题是：有没有一种简单的方法可以做到这一点？我可以在通话完成之前获得回复，所以我想知道我是否可以做类似

//This method does not exist
response.setCharacterEncoding("UTF-16LE");

“非常感谢！”之类的事情！

更新：所提到的方法就是要使用的方法。我使用的是旧版本 (2.3) 的 servlet API，但不包含它。更改版本解决了这一切。

原文

I have an API that returns XML, it actually returns it using the default encoding (I believe it's UTF-8), but now requirements have changed and we need to return everything in UTF-16LE.

My question is: is there an easy way of doing this? I have access to the response just before the calls complete so I was wondering if I could do something like

//This method does not exist
response.setCharacterEncoding("UTF-16LE");

Thanks a lot!

UPDATE:
The method mentioned is the one to use. I was using an old version (2.3) of the servlet API that did not include it. Changing the version fixed it all.

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俯瞰星空 2024-08-20 17:19:24

呃，该方法确实存在，此处

设置字符编码（MIME
字符集）发送到的响应
例如，客户端为 UTF-8。如果
字符编码已经
被设置为
setContentType(java.lang.String) 或
setLocale(java.util.Locale)，这个
方法覆盖它。呼唤
setContentType(java.lang.String) 与
text/html 的字符串和调用
此方法使用UTF-8的字符串
相当于调用
setContentType 的字符串为
文本/html；字符集=UTF-8。

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彼岸花ソ最美的依靠 2024-08-20 17:19:24

正如其他人所说，使用：

response.setCharacterEncoding("UTF-16LE");

或：

response.setHeader("Content-Type", "text/xml; charset=UTF-16LE");

...但请确保在调用 response.getWriter(); 之前执行此操作； ...！

As others have stated, use either:

response.setCharacterEncoding("UTF-16LE");

or:

response.setHeader("Content-Type", "text/xml; charset=UTF-16LE");

...but make sure you do this before calling response.getWriter(); ...!

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纸伞微斜 2024-08-20 17:19:24

首先

response.setHeader("Content-Type", "text/xml; charset=UTF-16LE");

然后，确保您确实发出该编码！

First

response.setHeader("Content-Type", "text/xml; charset=UTF-16LE");

Then, make sure you're actually emitting that encoding!

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此岸叶落 2024-08-20 17:19:24

我发现您必须将字符编码至少设置为 UTF-8，因为默认值是 ISO-8859-1。 ISO-8859-1 字符集不考虑某些扩展字符。我编写了一个辅助函数来使用“Accept”标头中发送的内容：

public static void setResponseCharacterSet(HttpServletRequest request, HttpServletResponse response)
{
    String type = "UTF-8";
    if(request.getHeader("accept") != null)
    {
        String[] params = request.getHeader("accept").split("charset=");
        if(params.length == 2) {
            type = params[1];
        }
    }
    response.setCharacterEncoding(type);
}

I found that you MUST set the character encoding to at least UTF-8 because the default is ISO-8859-1. The ISO-8859-1 character set doesn't account for some extended characters. I wrote a helper function to use what is sent in the "Accept" header:

public static void setResponseCharacterSet(HttpServletRequest request, HttpServletResponse response)
{
    String type = "UTF-8";
    if(request.getHeader("accept") != null)
    {
        String[] params = request.getHeader("accept").split("charset=");
        if(params.length == 2) {
            type = params[1];
        }
    }
    response.setCharacterEncoding(type);
}

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迷爱 2024-08-20 17:19:24

只需执行以下操作：

byte[] k =xml.getBytes("UTF-16"); // xml is the string with unicode content.  getBytes("UTF-16") encodes given String into a sequence of bytes and returns an array of bytes. you can use xml.getBytes(UTF8_CHARSET); for utf-8 encoding

response.setContentType("text/xml");
response.setContentLength(k.length);
response.getOutputStream().write(k);
response.getOutputStream().flush();
response.getOutputStream().close();

just do the following thing:

byte[] k =xml.getBytes("UTF-16"); // xml is the string with unicode content.  getBytes("UTF-16") encodes given String into a sequence of bytes and returns an array of bytes. you can use xml.getBytes(UTF8_CHARSET); for utf-8 encoding

response.setContentType("text/xml");
response.setContentLength(k.length);
response.getOutputStream().write(k);
response.getOutputStream().flush();
response.getOutputStream().close();

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