Java中的 Inflater getTotalOut()函数及示例
Inflater 类的getTotalOut()函数返回到目前为止提供的未压缩字节输出的总数。
函数签名:
public int getTotalOut()
句法:
i.getTotalOut();
参数:该函数不需要参数
返回类型:该函数返回 int 值,它是未压缩字节输出的总数。
异常:函数没有抛出任何异常
示例 1:使用 getTotalOut()函数
// Java program to describe the use
// of getTotalOut() function
import java.util.zip.*;
import java.io.UnsupportedEncodingException;
class GFG {
public static void main(String args[])
throws UnsupportedEncodingException,
DataFormatException
{
// compress the data
// deflater
Deflater d = new Deflater();
// get the text
String pattern = "GeeksforGeeks", text = "";
// generate the text
for (int i = 0; i < 4; i++)
text += pattern;
// set the input for deflator
d.setInput(text.getBytes("UTF-8"));
// finish
d.finish();
// output bytes
byte output[] = new byte[1024];
// compress the data
int size = d.deflate(output);
// end
d.end();
// end of compression
// use Inflater to get back the original data
// Inflater
Inflater i = new Inflater();
// set the input for inflator
i.setInput(output);
// output bytes
byte inflater_output[] = new byte[1024];
// uncompress the data
int org_size = i.inflate(inflater_output);
// output of inflater and deflater
System.out.println("Compressed output of deflater : "
+ new String(output));
System.out.println("Compressed output of Inflater : "
+ new String(inflater_output, "UTF-8"));
// get the total number of uncompressed bytes Output so far
System.out.println("Total Output value :" + i.getTotalOut());
// end
i.end();
}
}
输出:
注意:当 Output 的长度大于 Integer.MAX_VALUE 时会出现问题,结果可能会溢出,我们应该使用 getBytesRead()函数代替
参考: https: Java/util/zip/Inflater.html#getTotalOut()