Question

我需要在网站上托管.apk文件，以便从Android设备浏览器下载。我在服务器端使用servlet。要请求下载，我使用我在下载页面的标签中输入的网址http://xxx.xxx.xxx.xxx:8080/root/AppsServlet.do?id=arg

我已将内容类型设置为vnd.android.package-archive

response.setContentType("application/vnd.android.package-archive");
我已经在服务器的default-web.xml（glassfish）中添加了apk mime标签，即使在webapp的部署描述符中也是如此。

APK 应用程序/ vnd.android.package存档
- 我通过wifi网将手机连接到服务器（我的笔记本电脑）。

这是来自servlet的一段代码

void sendApk(HttpServletResponse response, String pckg){

    FilesManager fm = new FilesManager(FilesManager.APPS_KEY);
    response.setContentType("application/vnd.android.package-archive");
    File apkFile = fm.getApkFile(pckg);
    if(apkFile!= null){

        response.setHeader("Content-Disposition","attachment;filename=\""+apkFile.getName()+"\"");
        response.setHeader("Content-Description","File Transfert");
        response.setHeader("Content-Transfert_Encoding","binary");
        FileInputStream fis = null;
        OutputStream os = null;
        try {
            fis = new FileInputStream(apkFile); 
            //byte [] apkBytes = new byte[fis.available()];
            response.setContentLength(fis.available());
            //response.setHeader("Content-Length",fis.available()+"");
            os = response.getOutputStream();

           //java.nio.file.Files.readAllBytes(Paths.get(apkFile.getAbsolutePath()));
           // int read = fis.read(apkBytes);

            //fis.close();

            System.out.println(response.getHeaderNames());
           // os.write(apkBytes, 0, apkBytes.length);
           // os.flush();
            Utils.copyFileStream(fis, os);//Here's the line 76
        } catch (FileNotFoundException ex) {
            Logger.getLogger(AppsServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
          catch(IOException i){
            Logger.getLogger(AppsServlet.class.getName()).log(Level.SEVERE, null, i);
          }

        finally{
           if(fis !=  null){
                  try {
                    fis.close();
                } catch (IOException ex) {
                    Logger.getLogger(AppsServlet.class.getName()).log(Level.SEVERE, null, ex);
                }
           }

           if(os !=null){
                try {
                    os.close();
                } catch (IOException ex) {
                    Logger.getLogger(AppsServlet.class.getName()).log(Level.SEVERE, null, ex);
                }
           }

        }

    }

这是从Utils类

传输字节的方法

 public static void copyFileStream(FileInputStream is, OutputStream os){

    final int buffer_size = 20480;
    try{
      byte [] buffer = new byte[buffer_size];

      for(;;){

        int count = is.read(buffer, 0, buffer_size);
        if(count == -1) 
            break;

        os.write(buffer, 0, count);//Here's (Utils.java:50)

          }
              os.flush();
    }
    catch(IOException ex){
            Logger.getLogger(Utils.class.getName()).log(Level.SEVERE, null, ex);
            }

}

但是在每次测试和代码中的每次更改之后，仍然会失败，并且始终在服务器的日志中显示以下错误

SEVERE：org.apache.catalina.connector.ClientAbortException：java.io.IOException：已建立的连接已被主机中的软件中止在org.apache.catalina.connector.OutputBuffer.realWriteBytes（OutputBuffer.java:430）在com.sun.grizzly.util.buf.ByteChunk.append（ByteChunk.java:385）在org.apache.catalina.connector.OutputBuffer.writeBytes（OutputBuffer.java:455）在org.apache.catalina.connector.OutputBuffer.write（OutputBuffer.java:442）在org.apache.catalina.connector.CoyoteOutputStream.write（CoyoteOutputStream.java:160） at com.dimania.Utils.copyFileStream（Utils.java:50）在com.dimania.AppsServlet.sendApk（AppsServlet.java:76） at com.dimania.AppsServlet.processRequest（AppsServlet.java:44）在com.dimania.AppsServlet.doGet（AppsServlet.java:119）在javax.servlet.http.HttpServlet.service（HttpServlet.java:668）在javax.servlet.http.HttpServlet.service（HttpServlet.java:770）在org.apache.catalina.core.StandardWrapper.service（StandardWrapper.java:1550）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:281）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:175）在org.apache.catalina.core.StandardPipeline.doInvoke（StandardPipeline.java:655）在org.apache.catalina.core.StandardPipeline.invoke（StandardPipeline.java:595）在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:161）在org.apache.catalina.connector.CoyoteAdapter.doService（CoyoteAdapter.java:331）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:231） at com.sun.enterprise.v3.services.impl.ContainerMapper $ AdapterCallable.call（ContainerMapper.java:317） at com.sun.enterprise.v3.services.impl.ContainerMapper.service（ContainerMapper.java:195）在com.sun.grizzly.http.ProcessorTask.invokeAdapter（ProcessorTask.java:860） at com.sun.grizzly.http.ProcessorTask.doProcess（ProcessorTask.java:757）在com.sun.grizzly.http.ProcessorTask.process（ProcessorTask.java:1056）在com.sun.grizzly.http.DefaultProtocolFilter.execute（DefaultProtocolFilter.java:229） at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter（DefaultProtocolChain.java:137）在com.sun.grizzly.DefaultProtocolChain.execute（DefaultProtocolChain.java:104）在com.sun.grizzly.DefaultProtocolChain.execute（DefaultProtocolChain.java:90）在com.sun.grizzly.http.HttpProtocolChain.execute（HttpProtocolChain.java:79） at com.sun.grizzly.ProtocolChainContextTask.doCall（ProtocolChainContextTask.java:54）在com.sun.grizzly.SelectionKeyContextTask.call（SelectionKeyContextTask.java:59）在com.sun.grizzly.ContextTask.run（ContextTask.java:71） at com.sun.grizzly.util.AbstractThreadPool $ Worker.doWork（AbstractThreadPool.java:532）在com.sun.grizzly.util.AbstractThreadPool $ Worker.run（AbstractThreadPool.java:513）在java.lang.Thread.run（Thread.java:744）引起：java.io.IOException：已建立的连接已被主机中的软件中止 at sun.nio.ch.SocketDispatcher.write0（Native Method） at sun.nio.ch.SocketDispatcher.write（SocketDispatcher.java:51）在sun.nio.ch.IOUtil.writeFromNativeBuffer（IOUtil.java:93） at sun.nio.ch.IOUtil.write（IOUtil.java:65） at sun.nio.ch.SocketChannelImpl.write（SocketChannelImpl.java:487）在com.sun.grizzly.util.OutputWriter.flushChannel（OutputWriter.java:108）在com.sun.grizzly.util.OutputWriter.flushChannel（OutputWriter.java:76）在com.sun.grizzly.http.SocketChannelOutputBuffer.flushChannel（SocketChannelOutputBuffer.java:426） at com.sun.grizzly.http.SocketChannelOutputBuffer.flushBuffer（SocketChannelOutputBuffer.java:498） at com.sun.grizzly.http.SocketChannelOutputBuffer.realWriteBytes0（SocketChannelOutputBuffer.java:382） at com.sun.grizzly.http.SocketChannelOutputBuffer.realWriteBytes（SocketChannelOutputBuffer.java:364） at com.sun.grizzly.tcp.http11.InternalOutputBuffer $ OutputStreamOutputBuffer.doWrite（InternalOutputBuffer.java:894） at com.sun.grizzly.tcp.http11.filters.IdentityOutputFilter.doWrite（IdentityOutputFilter.java:159） at com.sun.grizzly.tcp.http11.InternalOutputBuffer.doWrite（InternalOutputBuffer.java:661） at com.sun.grizzly.tcp.Response.doWrite（Response.java:685）在org.apache.catalina.connector.OutputBuffer.realWriteBytes（OutputBuffer.java:425） ......还有34个

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从我的webapp下载Android浏览器中的.apk文件失败（ClientAbortException）

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