Write Zipentry Data To String

I have retrieved a zip entry from a zip file like so. InputStream input = params[0]; ZipInputStream zis = new ZipInputStream(input); ZipEntry entry; try { while ((entry = zis.

Solution 1:

you have to read from the ZipInputStream:

StringBuilder s = new StringBuilder();
byte[] buffer = newbyte[1024];
int read = 0;
ZipEntry entry;
while ((entry = zis.getNextEntry())!= null) {
      while ((read = zis.read(buffer, 0, 1024)) >= 0) {
           s.append(new String(buffer, 0, read));
      }
}

When you exit from the inner while save the StringBuilder content, and reset it.

Solution 2:

With defined encoding (e.g. UTF-8) and without creation of Strings:

import java.util.zip.ZipInputStream;
import java.util.zip.ZipEntry;
import java.io.ByteArrayOutputStream;
importstatic java.nio.charset.StandardCharsets.UTF_8;

try (
  ZipInputStreamzis=newZipInputStream(input, UTF_8); 
  ByteArrayOutputStreambaos=newByteArrayOutputStream()
) {
  byte[] buffer = newbyte[1024];
  intread=0;
  ZipEntry entry;
  while ((entry = zis.getNextEntry()) != null)
    while ((read = zis.read(buffer, 0, buffer.length)) > 0)
      baos.write(buffer, 0, read);
  Stringcontent= baos.toString(UTF_8.name());
}

Solution 3:

Here is the approach, which does not break Unicode characters:

finalZipInputStreamzis=newZipInputStream(newByteArrayInputStream(content));
finalInputStreamReaderisr=newInputStreamReader(zis);
finalStringBuildersb=newStringBuilder();
finalchar[] buffer = newchar[1024];

while (isr.read(buffer, 0, buffer.length) != -1) {
    sb.append(newString(buffer));
}

System.out.println(sb.toString());

Solution 4:

I would use apache's IOUtils

ZipEntry entry;
InputStreaminput= params[0];
ZipInputStreamzis=newZipInputStream(input);

try {
  while ((entry = zis.getNextEntry())!= null) {
    StringentryAsString= IOUtils.toString(zis, StandardCharsets.UTF_8);
  }
} catch (IOException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
}
IOUtils.closeQuietly(zis);

Solution 5:

Kotlin version but can be used in Java as well

val zipInputStream = ZipInputStream(inStream)
var zipEntry = zipInputStream.nextEntry
while(zipEntry != null) {
    println("Name of file : " + zipEntry.name)
    val fileContent = String(zipInputStream.readAllBytes(), StandardCharsets.UTF_8)
    println("File content : $fileContent")
    zipEntry = zipInputStream.nextEntry
}