相关疑难解决方法(0)

异常堆栈是

java.nio.BufferOverflowException
     at java.nio.DirectByteBuffer.put(DirectByteBuffer.java:327)
     at java.nio.ByteBuffer.put(ByteBuffer.java:813)
            mappedByteBuffer.put(bytes);

代码:

randomAccessFile = new RandomAccessFile(file, "rw");
fileChannel = randomAccessFile.getChannel();
mappedByteBuffer = fileChannel.map(MapMode.READ_WRITE, 0, file.length());

并打电话 mappedByteBuffer.put(bytes);

是什么原因 mappedByteBuffer.put(bytes)抛出BufferOverflowException
如何查找原因？