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POAndroid FileOutputStream.write: got java.io.IOException: Math result not representable
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  1. POAndroid FileOutputStream.write: got java.io.IOException: Math result not representable
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    copied!<p>I got that "interesting" exception in my in-the-wild server errorlog. My app posts exceptions and "wtf"-errors to my central server, so I don't have much information what <em>exactly</em> happend. I just know THAT it happend, and I don't have any clue.</p> <p>Stacktrace:</p> <p><code> java.io.IOException: Math result not representable at org.apache.harmony.luni.platform.OSFileSystem.writeImpl(Native Method) at org.apache.harmony.luni.platform.OSFileSystem.write(OSFileSystem.java:129) at java.io.FileOutputStream.write(FileOutputStream.java:297) at net.jav.apps.romeolive.RomeoInterface.fetchBinaryToFile(RomeoInterface.java:299) at net.jav.apps.romeolive.HeartBeatService$_fetchPic.run(HeartBeatService.java:327) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561) at java.lang.Thread.run(Thread.java:1096) </code></p> <p>The code in place of net.jav.apps.romeolive.RomeoInterface:</p> <p><code></p> <pre><code> byte[] ret=fetchBinary(fullurl); if (ret==null) return false; try { FileOutputStream os=new FileOutputStream(getCacheFileName(type,fullurl)); os.write(ret, 0, ret.length); </code></pre> <p></code></p> <p>The "failing" line #299 is the os.write()</p> <p>fetchBinary(url) fetches some binary file (thumbnail jpg) from a web server and returns it as a byte[], or NULL if not found/error.</p> <p>getCacheFileName(type,fullurl) returns the cacheDir() plus type plus the sanitized fullurl (removing slashes, only use the localpart of the url).</p> <p>So what exactly fails, is... Trying to write the existing thumbnail jpg byte[] to a perfectly crafted filename in cacheDir(). </p> <p>The device where this exception showed up (ONCE only until now) is: GT-I9000@samsung/GT-I9000/GT-I9000/GT-I9000:2.2.1/FROYO/XXJPY:user/release-keys</p> <p>Did anyone have this "Math result not representable" as IOException? I'd really like to nail down that thing ;) Google and Stackoverflow didn't show up anything helpful or even related.</p> <p>Thanks a lot, Oliver</p>
 

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