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| 6. 30. 1. CRC32检查 |
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import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.CRC32;
import java.util.zip.Checksum;
public class MainClass {
public static void main(String[] args) throws IOException {
FileInputStream fin = new FileInputStream(args[0]);
System.out.println(args[0] + ":\t" + getCRC32(fin));
fin.close();
}
public static long getCRC32(InputStream in) throws IOException {
Checksum cs = new CRC32();
// more efficient to read chunks of data at a time
for (int b = in.read(); b != -1; b = in.read()) {
cs.update(b);
}
return cs.getValue();
}
}
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| 6. 30. CRC校验 | | 6. 30. 1. | CRC32检查 | | |
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