- Java code
// file copy 2 public static void ChannelCopy(File f1, File f2) throws Exception { int length = 2097152; FileInputStream in = new FileInputStream(f1); FileOutputStream out = new FileOutputStream(f2); FileChannel inC = in.getChannel(); FileChannel outC = out.getChannel(); ByteBuffer b = null; while (true) { if (inC.position() == inC.size()) { inC.close(); outC.close(); } if ((inC.size() - inC.position()) < length) { length = (int) (inC.size() - inC.position()); } else length = 2097152; b = ByteBuffer.allocateDirect(length); inC.read(b); b.flip(); outC.write(b); outC.force(false); } }java.nio.channels.ClosedChannelException
at sun.nio.ch.FileChannelImpl.ensureOpen(Unknown Source)
at sun.nio.ch.FileChannelImpl.size(Unknown Source)
at com.cemso.util.FileOperationTool.ChannelCopy(FileOperationTool.java:138)
at com.cemso.util.InitServlet.createXmls(InitServlet.java:153)
at com.cemso.util.InitServlet.init(InitServlet.java:78)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1173)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:993)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4187)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4496)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:563)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:593)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
------解决方案--------------------------------------------------------
- Java code
// file copy 2 public static void ChannelCopy(File f1, File f2) throws Exception { int length = 2097152; FileInputStream in = new FileInputStream(f1); FileOutputStream out = new FileOutputStream(f2); FileChannel inC = in.getChannel(); FileChannel outC = out.getChannel(); ByteBuffer b = null; while (true) { if (inC.position() == inC.size()) { inC.close(); outC.close(); }else{ if ((inC.size() - inC.position()) < length) { length = (int) (inC.size() - inC.position()); } else length = 2097152; b = ByteBuffer.allocateDirect(length); inC.read(b); b.flip(); outC.write(b); outC.force(false); } } }