- java.util.zip 包類
- java.util.zip - 首頁
- java.util.zip - Adler32
- java.util.zip - CheckedInputStream
- java.util.zip - CheckedOutputStream
- java.util.zip - CRC32
- java.util.zip - Deflater
- java.util.zip - DeflaterInputStream
- java.util.zip - DeflaterOutputStream
- java.util.zip - GZIPInputStream
- java.util.zip - GZIPOutputStream
- java.util.zip - Inflater
- java.util.zip - InflaterInputStream
- java.util.zip - InflaterOutputStream
- java.util.zip - ZipEntry
- java.util.zip - ZipFile
- java.util.zip - ZipInputStream
- java.util.zip - ZipOutputStream
- java.util.zip 包擴充套件
- java.util.zip - 異常
- java.util.zip - 錯誤
- java.util.zip 有用資源
- java.util.zip - 快速指南
- java.util.zip - 有用資源
- java.util.zip - 討論
java.util.zip.DeflaterOutputStream.write() 方法示例
描述
java.util.zip.DeflaterOutputStream.write(byte[] b, int off, int len) 方法將位元組陣列寫入壓縮輸出流。此方法將阻塞,直到所有位元組都寫入。
宣告
以下是 java.util.zip.DeflaterOutputStream.write(byte[] b, int off, int len) 方法的宣告。
public void write(byte[] b, int off, int len) throws IOException
引數
b − 要寫入的資料。
off − 資料的起始偏移量。
len − 資料的長度。
異常
IOException − 如果發生 I/O 錯誤。
示例
以下示例演示了 java.util.zip.DeflaterOutputStream.write(byte[] b, int off, int len) 方法的使用。
描述
java.util.zip.DeflaterOutputStream.write(int b) 方法將一個位元組寫入壓縮輸出流。此方法將阻塞,直到可以寫入該位元組。
宣告
以下是 java.util.zip.DeflaterOutputStream.write(int b) 方法的宣告。
public void write(int b) throws IOException
引數
b − 要寫入的位元組。
異常
IOException − 如果發生 I/O 錯誤。
示例
以下示例演示了 java.util.zip.DeflaterOutputStream.write(int b) 方法的使用。
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());
}
}
讓我們編譯並執行上述程式,這將產生以下結果:
Original Message length : 300 UnCompressed Message length : 300
javazip_deflateroutputstream.htm
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