gzip

问题 I made a simple test code that generates a lot of integers and writes them into a compressed file using the gzip module. import gzip for idx in range(100000): with gzip.open('output.gz', 'ab') as f: line = (str(idx) + '\n').encode() f.write(line) The compressed file is created but when I decompress it, the raw data are actually a lot smaller: $ ls -l 588890 output 3288710 output.gz Can you please explain what am I doing wrong here? 回答1: The assumption that append mode would append to the

问题 I have sniffed what webread sends over Internet and found that it doesn't use any gzip headers. This makes transferring of big JSON and CSV files impossible. Can I activate gzip support somehow? 回答1: When using webread it is possible to specify additional HTTP headers with weboptions. The syntax for an additional header: options = weboptions('KeyName','Name','KeyValue','Value') Where Name and Value are the name of the header and its value respectively. To enable gzip , you must specify the

问题 I'm using Spray API(spray-client) to hit an external URL and I'm getting gzipped HttpResponse. How do I unzip this HttpResponse to get its entity(json, in my case)? val future: Future[HttpResponse] = (IO(Http) ? Get(uri)).mapTo[HttpResponse] val response = Await.result(future, Duration.inf) val json = response.entity Here, json is gzipped. How do I unzip it? 回答1: You need to use pipelining and the decode directive. Like in this example. Modifying that example your code would look something

问题 Are there any OSS compression libraries (gzip) available for J2ME? 回答1: Have a look at the TinyLine GZip library. Download link here. 回答2: software.informer.com/getfree-gzip-library-for-j2me/ swik.net/j2me+Library try this link you can download free here 回答3: Jazzlib-j2me (java.util.zip implementation in J2SE ported to J2ME) is available here: http://code.google.com/p/staff/downloads/list?q=jazzlib gzip and gunzip is supported. 回答4: The two compression algorithms which I have used for JavaME

问题 I have a String x which may or may not be gzip-compressed. Using the zlib library, I want to try decompressing x -- if it succeeds, the function shall return the compressed String. If not (i.e. x is not gzip-compressed) I want to simply return x . As GZip.decompress generates an error if applied to a non-gzip string, I could use catch or similar, but I'm specifically asking for a solution that uses the zlib error handling mechanism. How can I write a function, say decompressIfPossible ::

问题 How do I take a string and use something like GZIPOutputStream to gzip the string and then output the zipped content as a string. My intention is to transfer the zipped content as a post variable through HTTP. 回答1: The steps are actually pretty simple: Use the GZIPOutputStream to write it to a ByteArrayOutputStream... close the GZIPOutputStream Call ByteArrayOutputStream.toBytes() to get the byte array Use a Base64 encoder on the result The server will perform essentially the reverse of these

问题 I want to use gzip with GWT Please suggest how do i compress my GWT nocache.js,cache.html and gwt.rpc files using gzip Please help me Thanks 回答1: Generally, gzip is enabled on the server that your files are being hosted on, and you can do it for all files on your site rather than just those 3. This site helps you test whether gzip is enabled on your site: http://www.whatsmyip.org/http_compression/ Here's how to turn gzip on with the Apache web server: http://httpd.apache.org/docs/2.0/mod/mod

问题 I am using node request module to do some get request.I am getting the response body like { body: '\u001f?\b\u0000\u0000\u0000\u0000\u0000...............' } i have the header parameters and request like this, var params = { url: options.url, headers: { 'Accept-Encoding': "gzip, deflate", 'Accept': '*/*', 'Accept-Language': 'en-US,en;q=0.5', 'Accept-Charset' : 'utf-8', 'Content-Type' : 'application/json', 'User-Agent' : 'Mozilla/5.0' } }; request(params, function (error, response, body) { /

问题 Well, not my server. My friend found it and sent it to me, trying to make sense of it. What it appears to be is a PHP IRC bot, but I have no idea how to decode it and make any sense of it. Here is the code: <?eval(gzinflate(base64_decode('some base 64 code here')))?> So I decoded the base64, and it output a ton of strange characters, I'm guessing either encrypted or a different file type, like when you change a .jpg to a .txt and open it. But I have no idea how to decode this and determine

问题 I'm developing a small JAX-RS application with Resteasy. I wanted the application to serve some static content for Javascript and CSS files, etc. and I would like to take advantage of the already gzipped version of the resources packaged in the jars of webjars.org. Thus, I need to handle the Accept-Encoding header and check if the .gz is there (or not). So far, what I have is: @Path("res/{path:.*}") @GET public Response webjars(@PathParam("path") String path, @HeaderParam("Accept-Encoding")