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我尝试了一个非常简单的示例，我尝试编写 int -> ByteBuffer 并在从映射中读取值时重用数组。

    try (ChronicleMap<Integer, ByteBuffer> map = ChronicleMap
                    .of(Integer.class, ByteBuffer.class)
                    .entries(1)
                    .averageValueSize(30)
                    .createPersistedTo(new File("e:/temp/test.obj"))) {

                byte[] out = new byte[] { 1, 2, 3};         
                map.put(1, ByteBuffer.wrap(out)); // ClassCastException

                ByteBuffer buff = ByteBuffer.allocate(30);
                ByteBuffer in = map.getUsing(1, buff); // hoping that 'ByteBuffer in'
                                                       // is redundant
    }

不幸的是，我得到了一个意想不到的结果ClassCastException，因为 Chronicle 期望byte[]

Exception in thread "main" java.lang.ClassCastException: ChronicleMap{name=null, file=E:\temp\test.obj, identityHashCode=809762318}: Value must be a [B but was a class java.nio.HeapByteBuffer
    at net.openhft.chronicle.map.VanillaChronicleMap.checkValue(VanillaChronicleMap.java:190)
    at net.openhft.chronicle.map.VanillaChronicleMap.put(VanillaChronicleMap.java:707)
    at test.SerTest.main(SerTest.java:28)

我究竟做错了什么？尝试byte[]工作，但getUsing()没有使用我的输入数组，它仍然是空的。

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