Java Java类

此类实现了一个输出流过滤器，用于解压缩以“deflate”压缩格式存储的数据。
构造函数

• InflaterOutputStream(OutputStream out) ：创建一个具有默认解压缩器和缓冲区大小的新输出流。
• InflaterOutputStream(OutputStream out, Inflater infl) ：使用指定的解压缩器和默认缓冲区大小创建一个新的输出流。
• InflaterOutputStream(OutputStream out, Inflater infl, int bufLen) ：使用指定的解压器和缓冲区大小创建一个新的输出流。

方法：

• void close() ：将任何剩余的未压缩数据写入输出流并关闭底层输出流。

  Syntax :
  public void close()
             throws IOException
  Overrides:
  close in class FilterOutputStream
  Throws:
  IOException

• void finish() ：在不关闭底层流的情况下完成将未压缩数据写入输出流。

  Syntax :public void finish()
              throws IOException
  Throws:
  IOException

• void flush() ：刷新此输出流，强制写入任何待处理的缓冲输出字节。

  Syntax :public void flush()
             throws IOException
  Overrides:
  flush in class FilterOutputStream
  Throws:
  IOException

• void write(byte[] b, int off, int len) ：将字节数组写入未压缩的输出流。

  Syntax :public void write(byte[] b,
           int off,
           int len)
             throws IOException
  Overrides:
  write in class FilterOutputStream
  Parameters:
  b - buffer containing compressed data to decompress and write to the output stream
  off - starting offset of the compressed data within b
  len - number of bytes to decompress from b
  Throws:
  IndexOutOfBoundsException 
  IOException
  NullPointerException 
  ZipException

• void write(int b) ：将一个字节写入未压缩的输出流。

  Syntax :public void write(int b)
             throws IOException
  Parameters:
  b - a single byte of compressed data to decompress and write to the output stream
  Throws:
  IOException
  ZipException 
  

程序 1

//Java program to illustrate InflaterInputStream class
import java.io.*;
import java.util.Arrays;
import java.util.zip.DeflaterInputStream;
import java.util.zip.InflaterOutputStream;
  
class InflaterOutputStreamDemo 
{
    public static void main(String[] args) throws IOException 
    {
        byte b[] = {1, 2, 3, 4, 5, 6};
        ByteArrayInputStream bin = new ByteArrayInputStream(b);
        DeflaterInputStream din = new DeflaterInputStream(bin);
        byte c[] = new byte[10];
        din.read(c);
        din.close();
  
  
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        InflaterOutputStream ios = new InflaterOutputStream(bos);
        //illustrating write(byte b[],int off,int len)
        ios.write(c);
  
        //flushing
        ios.flush();
          
        //Finishes writing uncompressed data to the output stream
        // without closing the underlying stream.
        ios.finish();
        System.out.println(Arrays.toString(bos.toByteArray()));
        bos.close();
          
        //illustrating close()
        ios.close();
    }
}

输出 ：

[1, 2, 3, 4, 5, 6]

方案二：

//Java program to illustrate InflaterInputStream class
import java.io.*;
import java.util.Arrays;
import java.util.zip.DeflaterInputStream;
import java.util.zip.InflaterOutputStream;
  
class InflaterOutputStreamDemo 
{
    public static void main(String[] args) throws IOException 
    {
        byte b[] = {1, 2, 3, 4, 5, 6};
        ByteArrayInputStream bin = new ByteArrayInputStream(b);
        DeflaterInputStream din = new DeflaterInputStream(bin);
        FileOutputStream fos=new FileOutputStream("file.txt");
        byte c[] = new byte[10];
        din.read(c);
        fos.write(c);
        din.close();
        fos.close();
  
        //reading the compressed data
        FileInputStream fis = new FileInputStream("file.txt");
  
        ByteArrayOutputStream bos1=new ByteArrayOutputStream();
        InflaterOutputStream ios = new InflaterOutputStream(bos1);
        int ch;
          
        //illustrating write() method
        while ( (ch=fis.read() ) != -1) 
        {
            ios.write(ch);
        }
        System.out.print(Arrays.toString(bos1.toByteArray()));
    }
  
}

输出 ：

[1, 2, 3, 4, 5, 6]

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