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Java by API/java.util.zip/CheckedInputStream - История изменений
2026-04-22T17:31:34Z
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в 17:43, 31 мая 2010
2010-05-31T17:43:48Z
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<td colspan="1" style="background-color: white; color:black; text-align: center;">Версия 17:43, 31 мая 2010</td>
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http://www.jexp.ru/index.php?title=Java_by_API/java.util.zip/CheckedInputStream&diff=807&oldid=prev
Admin: 1 версия
2010-05-31T14:21:38Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== CheckedInputStream: getChecksum() ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
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import java.io.BufferedInputStream;<br />
import java.io.BufferedOutputStream;<br />
import java.io.BufferedReader;<br />
import java.io.FileInputStream;<br />
import java.io.FileOutputStream;<br />
import java.io.FileReader;<br />
import java.io.IOException;<br />
import java.util.zip.Adler32;<br />
import java.util.zip.CheckedInputStream;<br />
import java.util.zip.CheckedOutputStream;<br />
import java.util.zip.ZipEntry;<br />
import java.util.zip.ZipInputStream;<br />
import java.util.zip.ZipOutputStream;<br />
public class Main {<br />
public static void main(String[] args) throws IOException {<br />
FileOutputStream f = new FileOutputStream("test.zip");<br />
CheckedOutputStream csum = new CheckedOutputStream(f, new Adler32());<br />
ZipOutputStream zos = new ZipOutputStream(csum);<br />
BufferedOutputStream out = new BufferedOutputStream(zos);<br />
zos.setComment("A test of Java Zipping");<br />
for (int i = 0; i < args.length; i++) {<br />
System.out.println("Writing file " + args[i]);<br />
BufferedReader in = new BufferedReader(new FileReader(args[i]));<br />
zos.putNextEntry(new ZipEntry(args[i]));<br />
int c;<br />
while ((c = in.read()) != -1)<br />
out.write(c);<br />
in.close();<br />
}<br />
out.close();<br />
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System.out.println("Checksum: " + csum.getChecksum().getValue());<br />
System.out.println("Reading file");<br />
FileInputStream fi = new FileInputStream("test.zip");<br />
CheckedInputStream csumi = new CheckedInputStream(fi, new Adler32());<br />
ZipInputStream in2 = new ZipInputStream(csumi);<br />
BufferedInputStream bis = new BufferedInputStream(in2);<br />
ZipEntry ze;<br />
while ((ze = in2.getNextEntry()) != null) {<br />
System.out.println("Reading file " + ze);<br />
int x;<br />
while ((x = bis.read()) != -1)<br />
System.out.write(x);<br />
}<br />
System.out.println("Checksum: " + csumi.getChecksum().getValue());<br />
bis.close();<br />
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}<br />
}<br />
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</source><br />
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<!-- end source code --><br />
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== CheckedInputStream: read(byte[] b) ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
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import java.io.FileInputStream;<br />
import java.util.zip.Adler32;<br />
import java.util.zip.CheckedInputStream;<br />
public class Main {<br />
public static void main(String[] argv) throws Exception {<br />
CheckedInputStream cis = new CheckedInputStream(new FileInputStream("filename"), new Adler32());<br />
byte[] tempBuf = new byte[128];<br />
while (cis.read(tempBuf) >= 0) {<br />
}<br />
long checksum = cis.getChecksum().getValue();<br />
}<br />
}<br />
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</source><br />
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<!-- end source code --><br />
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== new CheckedInputStream(InputStream in, Checksum cksum) ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
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import java.io.BufferedInputStream;<br />
import java.io.BufferedOutputStream;<br />
import java.io.BufferedReader;<br />
import java.io.FileInputStream;<br />
import java.io.FileOutputStream;<br />
import java.io.FileReader;<br />
import java.io.IOException;<br />
import java.util.zip.Adler32;<br />
import java.util.zip.CheckedInputStream;<br />
import java.util.zip.CheckedOutputStream;<br />
import java.util.zip.ZipEntry;<br />
import java.util.zip.ZipInputStream;<br />
import java.util.zip.ZipOutputStream;<br />
public class Main {<br />
public static void main(String[] args) throws IOException {<br />
FileOutputStream f = new FileOutputStream("test.zip");<br />
CheckedOutputStream csum = new CheckedOutputStream(f, new Adler32());<br />
ZipOutputStream zos = new ZipOutputStream(csum);<br />
BufferedOutputStream out = new BufferedOutputStream(zos);<br />
zos.setComment("A test of Java Zipping");<br />
for (int i = 0; i < args.length; i++) {<br />
System.out.println("Writing file " + args[i]);<br />
BufferedReader in = new BufferedReader(new FileReader(args[i]));<br />
zos.putNextEntry(new ZipEntry(args[i]));<br />
int c;<br />
while ((c = in.read()) != -1)<br />
out.write(c);<br />
in.close();<br />
}<br />
out.close();<br />
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System.out.println("Checksum: " + csum.getChecksum().getValue());<br />
System.out.println("Reading file");<br />
FileInputStream fi = new FileInputStream("test.zip");<br />
CheckedInputStream csumi = new CheckedInputStream(fi, new Adler32());<br />
ZipInputStream in2 = new ZipInputStream(csumi);<br />
BufferedInputStream bis = new BufferedInputStream(in2);<br />
ZipEntry ze;<br />
while ((ze = in2.getNextEntry()) != null) {<br />
System.out.println("Reading file " + ze);<br />
int x;<br />
while ((x = bis.read()) != -1)<br />
System.out.write(x);<br />
}<br />
System.out.println("Checksum: " + csumi.getChecksum().getValue());<br />
bis.close();<br />
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}<br />
}<br />
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</source><br />
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<!-- end source code --></div>
Admin