long skip(long n)
描述 (Description)
java.util.zip.InflaterInputStream.skip(long n)方法跳过未压缩数据的指定字节数。
声明 (Declaration)
以下是java.util.zip.InflaterInputStream.skip(long n)方法的声明。
public long skip(long n)
throws IOException
参数 (Parameters)
n - 要跳过的字节数。
返回值 (Returns)
跳过的实际字节数。
异常 (Exceptions)
IOException - 如果发生I/O错误。
例子 (Example)
以下示例显示了java.util.zip.InflaterInputStream.skip（long n）方法的用法。
package com.iowiki;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.InflaterInputStream;
public class InflaterInputStreamDemo {
public static void main(String[] args) throws DataFormatException, IOException {
String message = "Welcome to iowiki.com;"
+"Welcome to iowiki.com;"
+"Welcome to iowiki.com;"
+"Welcome to iowiki.com;"
+"Welcome to iowiki.com;"
+"Welcome to iowiki.com;"
+"Welcome to iowiki.com;"
+"Welcome to iowiki.com;"
+"Welcome to iowiki.com;"
+"Welcome to iowiki.com;";
System.out.println("Original Message length : " + message.length());
byte[] input = message.getBytes("UTF-8");
int length = message.length();
// Compress the bytes
byte[] output = new byte[1024];
Deflater deflater = new Deflater();
deflater.setInput(input);
deflater.finish();
int compressedDataLength = deflater.deflate(output,0 , output.length, Deflater.NO_FLUSH);
System.out.println("Total uncompressed bytes input :" + deflater.getTotalIn());
System.out.println("Compressed Message Checksum :" + deflater.getAdler());
deflater.finished();
System.out.println("Compressed Message length : " + compressedDataLength);
ByteArrayInputStream bin = new ByteArrayInputStream(output);
InflaterInputStream inflaterInputStream = new InflaterInputStream(bin);
byte[] result = new byte[1024];
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
inflaterInputStream.skip(10);
while(inflaterInputStream.available() != 0){
buffer.write(inflaterInputStream.read());
}
inflaterInputStream.close();
// Decode the bytes into a String
String message1 = new String(buffer.toByteArray(),0, length,"UTF-8");
System.out.println(message.equals(message1));
}
}
让我们编译并运行上面的程序，这将产生以下结果 -
Original Message length : 300
Total uncompressed bytes input :300
Compressed Message Checksum :368538129
Compressed Message length : 42
false
