将已知编码的文件转换为UTF-8

I need to convert text file to the String, which, finally, I should put as an input parameter (type InputStream) to IFile.create (Eclipse). Looking for the example or how to do that but still can not figure out...need your help!

我需要将文本文件转换为字符串，最后，我应该将该字符串作为输入参数(类型为InputStream)转换为IFile。创建(Eclipse)。找个例子或者怎么做，但还是搞不清楚……需要你的帮助!

just for testing, I did try to convert original text file to UTF-8 encoded with this code

为了进行测试，我尝试将原始文本文件转换为使用此代码编码的UTF-8

FileInputStream fis = new FileInputStream(FilePath);
InputStreamReader isr = new InputStreamReader(fis);

Reader in = new BufferedReader(isr);
StringBuffer buffer = new StringBuffer();

int ch;
while ((ch = in.read()) > -1) {
    buffer.append((char)ch);
}
in.close();


FileOutputStream fos = new FileOutputStream(FilePath+".test.txt");
Writer out = new OutputStreamWriter(fos, "UTF8");
out.write(buffer.toString());
out.close();

but even thought the final *.test.txt file has UTF-8 encoding, the characters inside are corrupted.

但即使是最后的测试。txt文件有UTF-8编码，里面的字符被损坏。

1 个解决方案

#1

You need to specify the encoding of the InputStreamReader using the Charset parameter.

您需要使用Charset参数指定InputStreamReader的编码。

                                    // ↓ whatever the input's encoding is
Charset inputCharset = Charset.forName("ISO-8859-1");
InputStreamReader isr = new InputStreamReader(fis, inputCharset));

This also works:

这同样适用:

InputStreamReader isr = new InputStreamReader(fis, "ISO-8859-1"));

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See also:

参见:

• InputStreamReader(InputStream in, Charset cs)
• InputStreamReader(InputStream,字符集cs)
• Charset.forName(String charsetName)
• 字符集。forName(字符串charsetName)
• Java: How to determine the correct charset encoding of a stream
• Java:如何确定流的正确字符集编码
• How to reliably guess the encoding between MacRoman, CP1252, Latin1, UTF-8, and ASCII
• 如何可靠地猜测MacRoman、CP1252、Latin1、UTF-8和ASCII之间的编码?
• GuessEncoding - only works for UTF-8, UTF-16LE, UTF-16BE, and UTF-32 ☹
• GuessEncoding——只适用于utf - 8,UTF-16LE UTF-16BE,utf - 32☹
• ICU Charset Detector
• ICU字符集探测器
• cpdetector, free java codepage detection
• cpdetector，免费的java代码页检测
• JCharDet (Java port of Mozilla charset detector) _{^{ironically, that page does not render the apostrophe in "Mozilla's" correctly}}
• 具有讽刺意味的是，该页面没有正确地呈现“Mozilla's”中的撇号

SO search where I found all these links: https://*.com/search?q=java+detect+encoding

搜索我找到的所有这些链接:https://*.com/search?

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You can get the default charset - which is comes from the system the JVM is running on - at runtime via Charset.defaultCharset().

您可以通过charset . defaultcharset()在运行时获得默认的字符集——它来自JVM正在运行的系统。