Java：从文本文件中读取尾随的新行
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原文地址: http://stackoverflow.com/questions/554266/
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Java: Reading the Trailing New Line from a Text File
提问by Kevin Albrecht
How can you get the contents of a text file while preserving whether or not it has a newline at the end of the file? Using this technique, it is impossible to tell if the file ends in a newline:
如何在保留文本文件末尾是否有换行符的同时获取文本文件的内容？使用这种技术，无法判断文件是否以换行符结尾：
BufferedReader reader = new BufferedReader(new FileReader(fromFile));
StringBuilder contents = new StringBuilder();
String line = null;
while ((line=reader.readLine()) != null) {
contents.append(line);
contents.append("\n");
}
采纳答案by OscarRyz
You can read the whole file content using one of the techniques listed here
您可以使用此处列出的技术之一读取整个文件内容
My favorite is this one:
我最喜欢的是这个：
public static long copyLarge(InputStream input, OutputStream output)
throws IOException {
byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
long count = 0;
int n = 0;
while ((n = input.read(buffer))>=0) {
output.write(buffer, 0, n);
count += n;
}
return count;
}
}
回答by Michael Borgwardt
Don't use readLine(); transfer the contents one character at a time using the read() method. If you use it on a BufferedReader, this will have the same performance, although unlike your code above it will not "normalize" Windows-style CR/LF line breaks.
不要使用 readLine(); 使用 read() 方法一次传输一个字符的内容。如果您在 BufferedReader 上使用它，它将具有相同的性能，尽管与上面的代码不同，它不会“规范化”Windows 样式的 CR/LF 换行符。
