Java 带有 HTML 标题、问号的 Unicode 问题？65533；
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Unicode issue with an HTML Title, question mark? 65533;
提问by James
I'm trying to parse the title from the following webpage: http://kid37.blogger.de/stories/1670573/
我正在尝试从以下网页解析标题：http: //kid37.blogger.de/stories/1670573/
When I use the apache.commons.lang StringEscapeUtils.escapeHTML method on the title element I get the following
当我在标题元素上使用 apache.commons.lang StringEscapeUtils.escapeHTML 方法时，我得到以下内容
Das hermetische Caf�: Rock & Wrestling 2010
however when I display that in my webpage with utf-8 encoding it just shows a question mark.
但是，当我使用 utf-8 编码在我的网页中显示它时，它只显示一个问号。
Using the following code:
使用以下代码：
String title = StringEscapeUtils.escapeHtml(myTitle);
If I run the title through this website: http://tools.devshed.com/?option=com_mechtools&tool=27I get the following output which seems correct
如果我通过这个网站运行标题：http: //tools.devshed.com/?option=com_mechtools&tool=27我得到以下输出似乎是正确的
TITLE:
标题：
<title>Das hermetische Café: Rock & Wrestling 2010</title>
BECOMES (which I was expecting the escapeHtml method to do):
BECOMES（我期待escapeHtml 方法这样做）：
<title>Das hermetische Café: Rock & Wrestling 2010</title>
any ideas? thanks
有任何想法吗？谢谢
采纳答案by erickson
U+FFFD (decimal 65533) is the "replacement character". When a decoder encounters an invalid sequence of bytes, it may(depending on its configuration) substitute � for the corrupt sequence and continue.
U+FFFD（十进制65533）是“替换字符”。当解码器遇到无效的字节序列时，它可能（取决于其配置）用 替换损坏的序列并继续。
One common reason for a "corrupt" sequence is that the wrong decoder has been applied. For example, the decoder might be UTF-8, but the page is actually encoded with ISO-8859-1 (the default if another is not specified in the content-type header or equivalent).
“损坏”序列的一个常见原因是应用了错误的解码器。例如，解码器可能是 UTF-8，但页面实际上是用 ISO-8859-1 编码的（如果在 content-type 标头或等效标头中未指定另一个，则为默认值）。
So, before you even pass the string to escapeHtml, the "é" has already been replaced with "�"; the method encodes this correctly.
因此，在您甚至将字符串传递给 之前escapeHtml，“é”已经被替换为“ ”；该方法正确编码。
The page in question uses ISO-8859-1 encoding. Make sure that you are using that decoder when converting the fetched resource to a String.
有问题的页面使用 ISO-8859-1 编码。确保在将获取的资源转换为String.
