将已知编码的文件转换为UTF-8

本文介绍了将已知编码的文件转换为UTF-8的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我需要将文本文件转换为String，最后，我应该将它作为输入参数（InputStream）输入到IFile.create（Eclipse）中。
寻找这个例子或怎么做，但还是无法弄清楚...需要你的帮助！

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!

只是为了测试，我试过转换原始文本文件以UTF-8编码此代码

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

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();

但即使以为最终的* .test.txt文件有UTF-8编码，里面的字符是损坏。

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

推荐答案

您需要用 InputStreamReader code> Charset 参数。

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

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

这也可以：

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

另见：