String fileName = "D:docs/readme.txt"; Path path = Paths.get(fileName); byte[] bytes = Files.readAllBytes(path); List<String> allLines = Files.readAllLines(path, StandardCharsets.UTF_8); 1. 2. 3. 4. 使用java.io.FileReader类 FileReader获取BufferedReader,然后逐行读取文件。不支持编码并...
java.io.InputStream 中增加了新的方法来读取和复制 InputStream 中包含的数据。 readAllBytes:读取 InputStream 中的所有剩余字节; readNBytes: 从 InputStream 中读取指定数量的字节到数组中; transferTo:读取 InputStream 中的全部字节并写入到指定的 OutputStream 中。 发表于:...
使用Files.readAllBytes()读取文件,需要JDK版本为Java 7 以上 Read File to String using Files.readAllBytes() [≥ Java 7] readAllBytes()method reads all the bytes from a file. The method ensures that the file is closed when all bytes have been read or an I/O error, or other runtime excep...
Reads all the bytes from a file. The method ensures that the file is closed when all bytes have been read or an I/O error, or other runtime exception, is thrown. Note that this method is intended for simple cases where it is convenient to read all bytes into a byte array. It is...
Reads all remaining bytes from the input stream. C# Kopyala [Android.Runtime.Register("readAllBytes", "()[B", "GetReadAllBytesHandler", ApiSince=33)] public virtual byte[]? ReadAllBytes (); Returns Byte[] a byte array containing the bytes read from this input stream Attributes Register...
long transferTo(OutputStream out) Reads all bytes from this input stream and writes the bytes to the given output stream in the order that they are read. 核心方法就是read(),返回读取的字节(一个字节8个位,所以返回的结果是0-255),如果读取到了末尾,就返回-1,另外两个方法是常见的,将读出的放在...
String read = Files.readAllLines(path).get(0); assertEquals(expected_value, read); } Note that you can use the readAllBytes() method as well if you need binary data. 10.2. Read a Large File with Java 7 If we want to read a large file with Files class, we can use the BufferedReade...
Note that this method is intended for simple cases where it is convenient to read all bytes into a byte array. It is not intended for reading input streams with large amounts of data. The behavior for the case where the input stream isasynchronously closed, or the thread interrupted during...
The method ensures that the file is closed when all bytes have been read or an I/O error, or other runtime exception, is thrown. Note that this method is intended for simple cases where it is convenient to read all bytes into a byte array. It is not inte...
byte[] bytes = new byte[nBytesToRead]; reader.read(bytes); result = new String(bytes); } assertEquals(expectedValue, result); } 9. Reading withFileChannel If we are reading a large file,FileChannelcan be faster than standard IO.