Tim Tim - 1 year ago 124
Java Question

Read the String inside a ZipEntry: java.io.IOException: Stream closed

I have a servlet that accepts ZIP files that contains XML files. I would like to read the content of those xml files but I am getting a java.io.IOException: Stream closed.

I get the ZIP like this:

private byte[] getZipFromRequest(HttpServletRequest request) throws IOException {
byte[] body = new byte[request.getContentLength()];
new DataInputStream(request.getInputStream()).readFully(body);
return body;

And I read it like this:

public static void readZip(byte[] zip) throws IOException {

ByteArrayInputStream in = new ByteArrayInputStream(zip);
ZipInputStream zis = new ZipInputStream(in);

ZipEntry entry;

while ((entry = zis.getNextEntry()) != null) {
System.out.println(String.format("Entry: %s len %d", entry.getName(), entry.getSize()));

BufferedReader br = new BufferedReader(new InputStreamReader(zis, "UTF-8"));
String line;
while ((line = br.readLine()) != null) {

The output:

Entry: file.xml len 3459
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
correct content of my xml file
java.io.IOException: Stream closed
at java.util.zip.ZipInputStream.ensureOpen(ZipInputStream.java:67)
at java.util.zip.ZipInputStream.getNextEntry(ZipInputStream.java:116)
at util.ZipHelper.readZip(ZipHelper.java:26)

My question

Why am I getting this exeption on this line ?

while ((entry = zis.getNextEntry()) != null) {

What did I miss ?

Answer Source

You are wrapping your zis with BufferedReader so when you close br,zis will also close.

So remove br.close iteration will proceed without any exception.

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