java 如何在没有传输编码的情况下发送 HTTP 响应：分块？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/16532728/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How do I send an HTTP response without Transfer Encoding: chunked?
提问by Adam
I have a Java Servlet that responds to the Twilio API. It appears that Twilio does not support the chunked transfer that my responses are using. How can I avoid using Transfer-Encoding: chunked?
我有一个响应 Twilio API 的 Java Servlet。Twilio 似乎不支持我的响应使用的分块传输。我怎样才能避免使用Transfer-Encoding: chunked？
Here is my code:
这是我的代码：
// response is HttpServletResponse
// xml is a String with XML in it
response.getWriter().write(xml);
response.getWriter().flush();
I am using Jetty as the Servlet container.
我使用 Jetty 作为 Servlet 容器。
回答by cmbaxter
I believe that Jetty will use chunked responses when it doesn't know the response content length and/or it is using persistent connections. To avoid chunking you either need to set the response content length or to avoid persistent connections by setting "Connection":"close" header on the response.
我相信当 Jetty 不知道响应内容长度和/或它使用持久连接时，它将使用分块响应。为了避免分块，您需要设置响应内容长度或通过在响应上设置 "Connection":"close" 标头来避免持久连接。
回答by Anthony Accioly
Try setting the Content-lengthbefore writing to the stream. Don't forget to calculate the amount of bytes according to the correct encoding, e.g.:
在写入流之前尝试设置Content-length。不要忘记根据正确的编码计算字节数，例如：
final byte[] content = xml.getBytes("UTF-8");
response.setContentLength(content.length);
response.setContentType("text/xml"); // or "text/xml; charset=UTF-8"
response.setCharacterEncoding("UTF-8");
final OutputStream out = response.getOutputStream();
out.write(content);
回答by Popeye
The container will decide itself to use Content-Length or Transfer-Encoding basing on the size of data to be written by using Writeror outputStream. If the size of the data is larger than the HttpServletResponse.getBufferSize(), then the response will be trunked. If not, Content-Lengthwill be used.
容器将根据使用Writer或写入的数据大小自行决定使用 Content-Length 或 Transfer-Encoding outputStream。如果数据的大小大于HttpServletResponse.getBufferSize()，则响应将被中继。如果没有，Content-Length将被使用。
In your case, just remove the 2nd flushing code will solve your problem.
在您的情况下，只需删除第二个刷新代码即可解决您的问题。
