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我正在处理的项目由几个组件组成——几个独立的库被编译成 JAR，以及一个引用它们的主项目。全部都是用 Scala 编写的。

我在其中一个库中内部使用 ChronicleMap，使用带有自己的编组器的自定义值类。运行主项目时出现以下错误：

 /net/openhft/chronicle/core/values/ByteValue$$Native.java:15: error: cannot find symbol
public class ByteValue$$Native implements ByteValue, Copyable<ByteValue>, BytesMarshallable, Byteable {
                                          ^
  symbol: class ByteValue
/net/openhft/chronicle/core/values/ByteValue$$Native.java:15: error: cannot find symbol
public class ByteValue$$Native implements ByteValue, Copyable<ByteValue>, BytesMarshallable, Byteable {
                                                              ^
  symbol: class ByteValue
/net/openhft/chronicle/core/values/ByteValue$$Native.java:39: error: cannot find symbol
  public void copyFrom(ByteValue from) {
                       ^
  symbol:   class ByteValue
  location: class net.openhft.chronicle.core.values.ByteValue$$Native
/net/openhft/chronicle/core/values/ByteValue$$Heap.java:12: error: cannot find symbol
public class ByteValue$$Heap implements ByteValue, Copyable<ByteValue>, BytesMarshallable {
                                        ^
  symbol: class ByteValue
/net/openhft/chronicle/core/values/ByteValue$$Heap.java:12: error: cannot find symbol
public class ByteValue$$Heap implements ByteValue, Copyable<ByteValue>, BytesMarshallable {
                                                            ^
  symbol: class ByteValue
/net/openhft/chronicle/core/values/ByteValue$$Heap.java:34: error: cannot find symbol
  public void copyFrom(ByteValue from) {
                       ^
  symbol:   class ByteValue
  location: class net.openhft.chronicle.core.values.ByteValue$$Heap
/net/openhft/chronicle/core/values/ByteValue$$Native.java:20: error: method does not override or implement a method from a supertype
  @Override
  ^
/net/openhft/chronicle/core/values/ByteValue$$Native.java:25: error: method does not override or implement a method from a supertype
  @Override
  ^
/net/openhft/chronicle/core/values/ByteValue$$Native.java:30: error: method does not override or implement a method from a supertype
  @Override
  ^
/net/openhft/chronicle/core/values/ByteValue$$Native.java:65: error: cannot find symbol
    if (!(obj instanceof ByteValue)) return false;
                         ^
  symbol:   class ByteValue
  location: class net.openhft.chronicle.core.values.ByteValue$$Native
/net/openhft/chronicle/core/values/ByteValue$$Native.java:66: error: cannot find symbol
    ByteValue other = (ByteValue) obj;
    ^
  symbol:   class ByteValue
  location: class net.openhft.chronicle.core.values.ByteValue$$Native
/net/openhft/chronicle/core/values/ByteValue$$Native.java:66: error: cannot find symbol
    ByteValue other = (ByteValue) obj;
                       ^
  symbol:   class ByteValue
  location: class net.openhft.chronicle.core.values.ByteValue$$Native
/net/openhft/chronicle/core/values/ByteValue$$Heap.java:15: error: method does not override or implement a method from a supertype
  @Override
  ^
/net/openhft/chronicle/core/values/ByteValue$$Heap.java:21: error: method does not override or implement a method from a supertype
  @Override
  ^
/net/openhft/chronicle/core/values/ByteValue$$Heap.java:26: error: method does not override or implement a method from a supertype
  @Override
  ^
/net/openhft/chronicle/core/values/ByteValue$$Heap.java:57: error: cannot find symbol
    if (!(obj instanceof ByteValue)) return false;
                         ^
  symbol:   class ByteValue
  location: class net.openhft.chronicle.core.values.ByteValue$$Heap
/net/openhft/chronicle/core/values/ByteValue$$Heap.java:58: error: cannot find symbol
    ByteValue other = (ByteValue) obj;
    ^
  symbol:   class ByteValue
  location: class net.openhft.chronicle.core.values.ByteValue$$Heap
/net/openhft/chronicle/core/values/ByteValue$$Heap.java:58: error: cannot find symbol
    ByteValue other = (ByteValue) obj;
                       ^
  symbol:   class ByteValue
  location: class net.openhft.chronicle.core.values.ByteValue$$Heap

这只发生在从 Intellij IDEA 运行项目时，而不是从命令行运行时。

此外，如果我设置了一个独立项目，该项目使用具有相同自定义类和编组器的相同 ChronicleMap，我从 IDE 运行它没有任何问题。仅在从 IDE 运行使用我的库的项目时才会出现此问题。

所以我认为这可能与类加载顺序有关，也可能与 IDE 中缺少的某些依赖项有关，也可能无关。

我可以做些什么来找出为什么我不能从 IDE 运行？

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1 回答 1

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这确实看起来像某种配置问题。

-XX:+TraceClassLoading您可以通过运行代码并比较程序成功/不成功执行之间的输出来获得更多关于类加载正在进行的信息。

于 2017-08-02T08:07:03.837 回答