为什么当文件大小大于2 MB时,Java servlet会给出ClientAbortException?

时间:2014-10-17 17:48:25

标签: java servlets ioexception mod-jk

我试图编写一个位于Linux服务器上的java servlet,客户端可以使用它来下载视频文件。它适用于文件大小较小(可能小于2 MB)的情况,但较大的文件大小会返回错误:org.apache.catalina.connector.ClientAbortException: java.io.IOException: Broken pipe

搜索Google后,当客户端断开连接时,会出现此错误。在我的情况下,我使用客户端并且可以确认我没有做任何会破坏连接的事情(至少不是故意的) - 浏览器保持打开等等,当发生此错误时

知道可能导致这种情况的原因(以及如何修复)?

public class GetFile extends HttpServlet {

@Override
public void init(ServletConfig config) throws ServletException {
  super.init(config);
}

protected void doPost(HttpServletRequest req, HttpServletResponse res)
  throws ServletException, IOException {

String filename ="init_java";

try {

    // get user parameters
    filename = req.getParameter("fileId");  // complete path to video file
    //res.setContentType("video/mp4");  //not working
    res.setContentType("application/x-download");  

    File file=new File(filename);

    if (file.exists()) {

        res.setHeader("Content-Disposition", "inline; filename=\""+filename+"\"");
        res.setHeader("Cache-Control", "cache, must-revalidate");
        //res.setHeader("Pragma", "public"); // not sure when to use
        returnFile(filename, res.getOutputStream());

    } else {
        //error handling goes here
    }     

} catch (Exception e) {
    ...
} finally {
    ... 
}
}


private static void returnFile(String filename, OutputStream out) throws FileNotFoundException, IOException {
  InputStream in = null;
  try {
      in = new BufferedInputStream(new FileInputStream(filename));
      byte[] buf = new byte[4 * 1024]; // 4K buffer
      int bytesRead;
      while ((bytesRead = in.read(buf)) != -1) {
          out.write(buf, 0, bytesRead);
      }

  } finally {
      if (in != null) in.close();
  }
}

}

更新1

我在mod_jk.log文件中看到以下错误(将请求从Apache Web服务器传输到GlassFish应用程序服务器):

[info] init_jk::mod_jk.c (3383): mod_jk/1.2.40 initialized
[error] ajp_connection_tcp_get_message::jk_ajp_common.c (1313): wrong message format 0xcad5 from ::1:8009
[error] ajp_get_reply::jk_ajp_common.c (2204): (worker1) Tomcat is down or network problems. Part of the response has already been sent to the client
[info] ajp_service::jk_ajp_common.c (2673): (worker1) sending request to tomcat failed (recoverable), because of protocol error (attempt=1)
[info] ajp_process_callback::jk_ajp_common.c (2000): Writing to client aborted or client network problems
[info] ajp_service::jk_ajp_common.c (2673): (worker1) sending request to tomcat failed (unrecoverable), because of client write error (attempt=2)
[info] jk_handler::mod_jk.c (2799): Aborting connection for worker=worker1

它似乎跟踪我观察到的内容,但我不是这里的专家 - 这是否提供了对可能的根本原因的任何见解?

2 个答案:

答案 0 :(得分:1)

这可能是由于您的服务器设置了限制。检查属性文件。我确信有一个说没有大于2MB的文件。

答案 1 :(得分:0)

原来这是一个GlassFish错误。修复是安装2个文件:

https://java.net/jira/browse/GLASSFISH-18446