如何避免使用HttpURLConnection的HTTP HTTP响应的EOFException？ [英] How to avoid EOFException for an empty HTTP response from HttpURLConnection?

问题描述

我发送一个HTTP请求到合法返回一个空白响应HTTP响应代码= 200（确定）的服务器。

I'm sending an HTTP request to a server which legitimately returns a blank response with HTTP response code = 200 (OK).

但这会导致标记行下面抛出一个 EOFException ：

But this causes the marked line below to throw an EOFException:

InputStream responseStream = httpURLConnection.getInputStream();
final String contentEncoding = this.connection.getContentEncoding();
if ("gzip".equalsIgnoreCase(contentEncoding)) {
    responseStream = new GZIPInputStream(responseStream); // throws EOFException
}

可能有一个明显的方法来防止这个，但我可以找不到我应该检查一下像 connection.getContentLength（）> 0 或 responseStream.available（）> 0 创建GZIPInputStream之前？这两个都不是正确的，我没有遇到任何类似的例子代码片段...

There may be an obvious way to prevent this but I can't find it. Should I perhaps be checking something like connection.getContentLength() > 0 or responseStream.available() > 0 before creating the GZIPInputStream? Neither of these seem quite right and I haven't come across anything similar in example code fragments...

推荐答案

$ b $我应该检查一下像connection.getContentLength（）> 0

Should I perhaps be checking something like connection.getContentLength() > 0

是的。

或responseStream.available（）> 0

or responseStream.available() > 0

绝对不是。可用（）== 0不是EOF的有效测试，Javadoc明确表示。

Definitely not. available() == 0 isn't a valid test for EOF, and the Javadoc explicitly says so.

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