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POjava.lang.OutOfMemoryError on HttpServer on download large data
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2011-10-26T14:15:27.873
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2012-05-15T11:45:14.183
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2012-05-15T11:45:14.183
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Body
I have java 6 embedded HttpServer. It has a handle which allows clients to download a big text file. The problem is that whenthe server has more then 10 simultaneous clients, i get out of memory exception. I'm prety sure that the problem is around the Http Server. <pre><code> HttpServer m_server = HttpServer.create(new InetSocketAddress(8080), 0); m_server.createContext("/DownloadFile", new DownloadFileHandler() ); public class DownloadFileHandler implements HttpHandler { private static byte[] myFile = new String("....................").getBytes(); //string about 8M @Override public void handle(HttpExchange exchange) throws IOException { exchange.sendResponseHeaders(HTTP_OK, myFile .length); OutputStream responseBody = exchange.getResponseBody(); responseBody.write(myFile ); responseBody.close(); } } </code></pre> Now the exception i get is: <pre><code>java.lang.OutOfMemoryError: Java heap space at java.nio.HeapByteBuffer.<init>(Unknown Source) at java.nio.ByteBuffer.allocate(Unknown Source) at sun.net.httpserver.Request$WriteStream.write(Unknown Source) at sun.net.httpserver.FixedLengthOutputStream.write(Unknown Source) at java.io.FilterOutputStream.write(Unknown Source) at sun.net.httpserver.PlaceholderOutputStream.write(Unknown Source) at com.shunra.javadestination.webservices.DownloadFileHandler.handle(Unknown Source) at com.sun.net.httpserver.Filter$Chain.doFilter(Unknown Source) at sun.net.httpserver.AuthFilter.doFilter(Unknown Source) at com.sun.net.httpserver.Filter$Chain.doFilter(Unknown Source) at sun.net.httpserver.ServerImpl$Exchange$LinkHandler.handle(Unknown Source) at com.sun.net.httpserver.Filter$Chain.doFilter(Unknown Source) at sun.net.httpserver.ServerImpl$Exchange.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Exception in thread "pool-1-thread-24" java.lang.OutOfMemoryError: </code></pre> The suggestion regarding the getBytes() doesn't change the exception. i have tried to hold a static reference to byte[] instead of creating it each time. And I still get the same exception.
Tags
<java><out-of-memory><com.sun.net.httpserver>
Title
java.lang.OutOfMemoryError on HttpServer on download large data
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1. USSophie
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