java.util.zip.DeflaterOutputStream.write() 方法
❮ java.util.zip - DeflaterOutputStream 类
描述
java.util.zip.DeflaterOutputStream.write(byte[] b, int off, int len) 方法将字节数组写入压缩输出流。 此方法将阻塞,直到所有字节都被写入。
声明
以下是 java.util.zip.DeflaterOutputStream.write(byte[] b, int off, int len) 方法的声明。
public void write(byte[] b, int off, int len) throws IOException
参数
b − 要写入的数据。
off − 数据的起始偏移量。
len − 数据的长度。
异常
IOException − 如果发生 I/O 错误。
示例
以下示例显示了 java.util.zip.DeflaterOutputStream.write(byte[] b, int off, int len) 方法的用法。
描述
java.util.zip.DeflaterOutputStream.write(int b) 方法将一个字节写入压缩输出流。 此方法将阻塞,直到可以写入字节。
声明
以下是 java.util.zip.DeflaterOutputStream.write(int b) 方法的声明。
public void write(int b) throws IOException
参数
b − 要写入的字节。
异常
IOException − 如果发生 I/O 错误。
示例
以下示例显示了 java.util.zip.DeflaterOutputStream.write(int b) 方法的用法。
package com.tutorialspoint; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.FileInputStream; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.util.Arrays; import java.util.zip.Adler32; import java.util.zip.CheckedInputStream; import java.util.zip.DataFormatException; import java.util.zip.Deflater; import java.util.zip.DeflaterInputStream; import java.util.zip.DeflaterOutputStream; import java.util.zip.Inflater; import java.util.zip.InflaterInputStream; public class DeflaterOutputStreamDemo { public static void main(String[] args) throws DataFormatException, IOException { String message = "Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;"; String dictionary = "Welcome"; System.out.println("Original Message length : " + message.length()); byte[] input = message.getBytes("UTF-8"); // Compress the bytes ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream(); DeflaterOutputStream outputStream = new DeflaterOutputStream(arrayOutputStream); for(byte b: input){ outputStream.write(b); } outputStream.close(); //Read and decompress the data byte[] readBuffer = new byte[5000]; ByteArrayInputStream arrayInputStream = new ByteArrayInputStream(arrayOutputStream.toByteArray()); InflaterInputStream inputStream = new InflaterInputStream(arrayInputStream); int read = inputStream.read(readBuffer); //Should hold the original (reconstructed) data byte[] result = Arrays.copyOf(readBuffer, read); // Decode the bytes into a String message = new String(result, "UTF-8"); System.out.println("UnCompressed Message length : " + message.length()); } }
让我们编译并运行上面的程序,这将产生下面的结果 −
Original Message length : 300 UnCompressed Message length : 300
❮ java.util.zip - DeflaterOutputStream 类