Apache Tomcat 10.1无法删除临时文件

o4tp2gmn  于 12个月前  发布在  Apache
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我们刚刚将Tomcat从9.0升级到10.1,Java从8升级到11。一切都运行得很好,除了现在我们有临时文件堆积在Apache Software Foundation\Tomcat 10.1\work\Catalina\localhost\root中。这导致Java堆空间问题后出现502错误。我们看到这样的错误。

07-Feb-2023 23:33:11.414 SEVERE [http-nio-81-exec-3] org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun Error running socket processor
    java.io.UncheckedIOException: Cannot delete C:\Program Files\Apache Software Foundation\Tomcat 10.1\work\Catalina\localhost\root\upload_ac88107d_733f_4b9d_a3a3_9274a46f92e3_00000509.tmp
        at org.apache.tomcat.util.http.fileupload.disk.DiskFileItem.delete(DiskFileItem.java:429)
        at org.apache.catalina.core.ApplicationPart.delete(ApplicationPart.java:54)
        at org.apache.catalina.connector.Request.recycle(Request.java:451)
        at org.apache.catalina.connector.CoyoteAdapter.log(CoyoteAdapter.java:512)
        at org.apache.catalina.connector.CoyoteAdapter.checkRecycled(CoyoteAdapter.java:536)
        at org.apache.coyote.http11.Http11Processor.recycle(Http11Processor.java:1440)
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.release(AbstractProtocol.java:1052)
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:1024)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1734)
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
        at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
        at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.base/java.lang.Thread.run(Thread.java:834)
    Caused by: java.io.IOException: Cannot delete C:\Program Files\Apache Software Foundation\Tomcat 10.1\work\Catalina\localhost\root\upload_ac88107d_733f_4b9d_a3a3_9274a46f92e3_00000509.tmp
        ... 14 more

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有什么想法吗?

inb24sb2

inb24sb21#

它来自你的代码的文件处理部分。代码在tomcat 8.0.50上工作正常,但在更高的版本中,它会抛出错误,如:无法删除临时文件
有两种方法可以解决这个问题:
1.在阅读写数据时不要使用**byte[]**类型的arg。从输入文件中读取数据的正确方法是:

try (FileOutputStream fos = new FileOutputStream(new File(newFileName));
    InputStream is = file.getInputstream()) {
    int byteValue;
    while ((byteValue = is.read()) != -1) { // don't use: is.read(byte[] arg)
        fos.write(byteValue);  // don't use: fos.write(byte[] arg, 0, byteValue)
    }
} catch (IOException e) {
    e.printStackTrace();
}

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注意:这将需要一些时间来处理文件,但它不会抛出任何错误。
1.恢复到旧的tomcat版本使用**byte[]**。

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