spring boot - 在同一线程上创建和销毁 bean

Question

I'm using a library, that requires me to initialize and deinitialize it on the same thread and if I don't deinitialize it, It will crash JVM. The crash on it's own doesn't break anything, just looks ugly, but the error dumps it leaves might quickly fill a lot of space.

Currently, the code is really simple:

@Bean
IEngine OCREngine() throws Exception {
    return Engine.InitializeEngine(sdkLibraryPath, projectId,
        sdkLicensePath, sdkLicensePassword, "", "", false);
}

@PreDestroy
void unloadEngine() throws Exception {
    Engine.DeinitializeEngine();
}

Answer 1

I think you need to set the scope of the applicable spring beans to request . This scope will create new bean for each request, which ultimately would correspond to bean creation per thread.