通用的异常捕获机制 会非常有用。

表示怀疑。你已经知道你的代码坏了，因为它崩溃了。进食异常可能会掩盖这一点，但这可能只会导致更糟糕、更微妙的错误。

你真正需要的是一个调试器……

try {
   // ...
} catch (...) {
   // ...
}

注意…catch里面是一个真正的省略号。三个点。

然而，由于c++异常不一定是基Exception类的子类，因此在使用此构造时无法实际看到抛出的异常变量。

请注意

try{
// ...
} catch (...) {
// ...
}

仅捕获语言级异常，其他低级异常/错误，如访问违反和分割错误不会被捕获。

如果你正在寻找特定于windows的解决方案，那么有结构化异常处理: https://learn.microsoft.com/en-us/cpp/cpp/try-except-statement

代码如下所示

__try
{
   // code here may throw or make access violation
}
__except( EXCEPTION_EXECUTE_HANDLER )
{
    // after exception code here, e.g. log the error
}

它不仅可以捕获c++异常，还可以捕获访问违规或其他系统异常。

Can you run your JNI-using Java application from a console window (launch it from a java command line) to see if there is any report of what may have been detected before the JVM was crashed. When running directly as a Java window application, you may be missing messages that would appear if you ran from a console window instead. Secondly, can you stub your JNI DLL implementation to show that methods in your DLL are being entered from JNI, you are returning properly, etc? Just in case the problem is with an incorrect use of one of the JNI-interface methods from the C++ code, have you verified that some simple JNI examples compile and work with your setup? I'm thinking in particular of using the JNI-interface methods for converting parameters to native C++ formats and turning function results into Java types. It is useful to stub those to make sure that the data conversions are working and you are not going haywire in the COM-like calls into the JNI interface. There are other things to check, but it is hard to suggest any without knowing more about what your native Java methods are and what the JNI implementation of them is trying to do. It is not clear that catching an exception from the C++ code level is related to your problem. (You can use the JNI interface to rethrow the exception as a Java one, but it is not clear from what you provide that this is going to help.)

可以这样写:

try
{
  //.......
}
catch(...) // <<- catch all
{
  //.......
}

但是这里有一个非常不明显的风险:您无法找到try块中抛出的错误的确切类型，因此当您确定无论异常类型是什么，程序都必须以catch块中定义的方式持续存在时，可以使用这种catch。