gzipoutputstream


Compressing a string using GZIPOutputStream

随声附和 提交于 2020-01-11 05:54:52
问题 I want to zip my string values. These string values should be same as .net zipped strings. I wrote Decompress method and when I send a .net zipped string to it, it works correctly. But the Compress method does not work correctly. public static String Decompress(String zipText) throws IOException { int size = 0; byte[] gzipBuff = Base64.decode(zipText); ByteArrayInputStream memstream = new ByteArrayInputStream(gzipBuff, 4, gzipBuff.length - 4); GZIPInputStream gzin = new GZIPInputStream

How to compress a .zip to a .gz in java?

坚强是说给别人听的谎言 提交于 2019-12-31 04:10:57
问题 I want to compress a normal file to a .zip and then compress it as gzip file without creating a new file. For example let's say that I have a pdf document doc.pdf , what I have to get is: doc.pdf.zip.gz I don't want to creat a new file called doc.pdf.zip and then open it and gzip it. I'm working with a server to get the file from the browser and return it back, this is my function: public void ZIPandGZIP(String fileName, OutputStream os, String header) throws FileNotFoundException { File file

GZip in android [duplicate]

こ雲淡風輕ζ 提交于 2019-12-18 13:09:21
问题 This question already has answers here : How can I Zip and Unzip a string using GZIPOutputStream that is compatible with .Net? (10 answers) Closed 5 years ago . How to compress and decompress a file in android using GZip. please provide with some reference , so that it would a great help for me. Thanks in advance 回答1: Please use the following methods to compress the string using gzip. public static byte[] compress(String string) throws IOException { ByteArrayOutputStream os = new

Compressing with Java Decompressing with PHP

和自甴很熟 提交于 2019-12-18 12:27:22
问题 I have a situation where a servlet is providing compressed data to a PHP script. I compress the data on the Java side no problem, but PHP seems unable to decompress. Here is the relevent code snippets Java Side: OutputStream o=response.getOutputStream(); GZIPOutputStream gz=new GZIPOutputStream(o); gz.write(GridCoder.encode(rs,id, perPage, page).getBytes()); gz.close(); o.close(); PHP Side: $xml= gzuncompress($xml); Can someone please point me in the right direction. 回答1: I just saw your

Force flush on a GZIPOutputStream in java

你离开我真会死。 提交于 2019-12-18 03:54:39
问题 we are working on a program where we need to flush (force compress and send data) a GZIPOutputStream. The problem is, that the flush method of the GZIPOutputStream doesn't work as expected (force compress and send data), instead the Stream waits for more data for efficient data compression. When you call finish the data is compressed and sent over the output stream but the GZIPOutputStream (not the underlying stream) will be closed so we cant write more data till we create a new

file corrupted when I post it to the servlet using GZIPOutputStream

只谈情不闲聊 提交于 2019-12-02 13:12:02
问题 I tried to modify @BalusC excellent tutorial here to send gziped compressed files. This is a working java class : import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; import java.util

file corrupted when I post it to the servlet using GZIPOutputStream

自作多情 提交于 2019-12-02 05:50:32
I tried to modify @BalusC excellent tutorial here to send gziped compressed files. This is a working java class : import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; import java.util.zip.GZIPOutputStream; public final class NetworkService { // *** EDIT THOSE AS APROPRIATE private static

How to compress a .zip to a .gz in java?

╄→гoц情女王★ 提交于 2019-12-02 04:33:44
I want to compress a normal file to a .zip and then compress it as gzip file without creating a new file. For example let's say that I have a pdf document doc.pdf , what I have to get is: doc.pdf.zip.gz I don't want to creat a new file called doc.pdf.zip and then open it and gzip it. I'm working with a server to get the file from the browser and return it back, this is my function: public void ZIPandGZIP(String fileName, OutputStream os, String header) throws FileNotFoundException { File file = new File(fileName); FileInputStream fis = new FileInputStream(file); byte[] data = new byte[(int)

Why do gzip of Java and Go get different results?

跟風遠走 提交于 2019-11-27 07:56:49
问题 Firstly, my Java version: string str = "helloworld"; ByteArrayOutputStream localByteArrayOutputStream = new ByteArrayOutputStream(str.length()); GZIPOutputStream localGZIPOutputStream = new GZIPOutputStream(localByteArrayOutputStream); localGZIPOutputStream.write(str.getBytes("UTF-8")); localGZIPOutputStream.close(); localByteArrayOutputStream.close(); for(int i = 0;i < localByteArrayOutputStream.toByteArray().length;i ++){ System.out.println(localByteArrayOutputStream.toByteArray()[i]); }

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