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mirnshi:a_java_class_to_get_a_compressed_file_from_the_server [2009/12/19 13:22] (current) mirnshi created |
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| + | ====== A java class to get a compressed file from the server ====== | ||
| + | |||
| + | Some guys often ask me to help them to get some files from the server, such as tomcat log. Everytime I must open ftp client to connect the server, download these file. The lazy man need a smart way to do this job. Now they can help themselves. | ||
| + | // | ||
| + | // | ||
| + | import java.io.File; | ||
| + | import java.io.FileInputStream; | ||
| + | import java.io.IOException; | ||
| + | import java.io.InputStream; | ||
| + | import java.io.OutputStream; | ||
| + | import java.util.zip.*; | ||
| + | import javax.servlet.http.HttpServletRequest; | ||
| + | import javax.servlet.http.HttpServletResponse; | ||
| + | public class ZGet { | ||
| + | public void get(HttpServletRequest request, HttpServletResponse response, String filename) { | ||
| + | try { | ||
| + | // String fname = request.getParameter("xpath"); | ||
| + | fname = filename; | ||
| + | File f = new File(fname); | ||
| + | if (f.canRead()) { | ||
| + | response.setContentType("application/x-gzip"); | ||
| + | response.setHeader("Location", f.getName()); | ||
| + | response.setHeader("Content-Disposition", "attachment; filename=" + f.getName() + ".gz"); | ||
| + | get(new FileInputStream(filename), response.getOutputStream()); | ||
| + | response.getOutputStream().flush(); | ||
| + | response.getOutputStream().close(); | ||
| + | } | ||
| + | } catch (Exception e) { | ||
| + | // TODO Auto-generated catch block | ||
| + | //e.printStackTrace(); | ||
| + | } | ||
| + | } | ||
| + | private void get(InputStream in, OutputStream out) throws IOException { | ||
| + | if (in == null || out == null) { | ||
| + | return; | ||
| + | } | ||
| + | byte[] buffer = new byte[1024]; | ||
| + | int i = -1; | ||
| + | GZIPOutputStream gzip = new GZIPOutputStream(out); | ||
| + | while ((i = in.read(buffer)) != -1) { | ||
| + | gzip.write(buffer, 0, i); | ||
| + | } | ||
| + | gzip.close(); | ||
| + | } | ||
| + | } | ||
| + | |||
| + | |||
| + | |||
| + | {{tag>}} | ||
| + | |||
| + | ~~LINKBACK~~ | ||
| + | ~~DISCUSSION~~ | ||
