Created
June 22, 2012 16:29
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serveletからoctet-streamでファイルダウンロードするサンプルコード。
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| package com.github.masahitojp | |
| import org.scalatra._ | |
| import java.io.File | |
| class BaseServlet extends ScalatraServlet { | |
| // *************************************** | |
| // GLOBAL METHODS | |
| before() { | |
| println("Before " + this.getClass) | |
| } | |
| after() { | |
| println("After " + this.getClass) | |
| } | |
| notFound { | |
| <html> | |
| <body> | |
| <h1>Ooops</h1> | |
| I'm terribly sorry, but we have a 404 not found problem here! | |
| {this.getClass} | |
| </body> | |
| </html> | |
| } | |
| get("/file"){ | |
| val file = new File("/home/test/a.tar.gz") | |
| com.skeedtech.deliver.Test.printOutFile(request,response,file) | |
| } | |
| } |
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| package com.github.masahitojp | |
| import java.io.BufferedInputStream | |
| import java.io.File | |
| import java.io.FileInputStream | |
| import java.io.IOException | |
| import javax.servlet.http.HttpServletRequest | |
| import javax.servlet.http.HttpServletResponse | |
| object Test { | |
| def printOutFile(req: HttpServletRequest , res: HttpServletResponse, fileOut: File) { | |
| var os = res.getOutputStream | |
| try { | |
| val hFile:FileInputStream = new FileInputStream(fileOut) | |
| val bis: BufferedInputStream = new BufferedInputStream(hFile) | |
| res.setContentType("application/octet-stream") | |
| res.setHeader("Content-Disposition", "filename=\"" + fileOut.getName + "\"") | |
| var len: Int = 0 | |
| val buffer: Array[Byte] = new Array[Byte](1024*1024) | |
| while ((({ | |
| len = bis.read(buffer); len | |
| })) >= 0) { | |
| os.write(buffer, 0, len) | |
| } | |
| bis.close | |
| } | |
| catch { | |
| case e: IOException => { | |
| printOutNotFound(res) | |
| } | |
| } | |
| finally { | |
| if (os != null) { | |
| try { | |
| os.close | |
| } | |
| catch { | |
| case e: IOException => { | |
| } | |
| } | |
| finally { | |
| os = null | |
| } | |
| } | |
| } | |
| } | |
| private def printOutNotFound(res: HttpServletResponse) { | |
| try { | |
| val toClient = res.getOutputStream | |
| res.setContentType("text/html;charset=utf-8") | |
| toClient.write("File not found".getBytes) | |
| toClient.close | |
| } | |
| catch { | |
| case e: IOException => { | |
| } | |
| } | |
| } | |
| } |
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