開発で次のような奇妙な例外が発生しました。
Error creating bean with name 'scopedTarget.oauth2ClientContext': Scope 'request' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
エラーの原因は、xxl-jobとspringsecurityの導入です。xxl-jobの公式の問題を次のように
裏返しました：スコープ「リクエスト」は現在のスレッドではアクティブではありません＃1381
コードに従いました
XxlJobSpringExecutor#initJobHandlerMethodRepository
private void initJobHandlerMethodRepository(ApplicationContext applicationContext) {
//省略。。。。
String[] beanDefinitionNames = applicationContext.getBeanDefinitionNames();
for (String beanDefinitionName : beanDefinitionNames) {
// 代码在此处抛了异常
Object bean = applicationContext.getBean(beanDefinitionName);
//省略代码
AbstractBeanFactory#doGetBean次のようにコードブロックに従います
//异常抛出位置
Object scopedInstance = scope.get(beanName, () -> {
beforePrototypeCreation(beanName);
try {
return createBean(beanName, mbd, args);
}
finally {
afterPrototypeCreation(beanName);
}
});
bean = getObjectForBeanInstance(scopedInstance, name, beanName, mbd);
Scope.getと入力して、その実装が次のようになっていることを確認します。
見かけの例外scopedTarget.oauth2ClientContextこれはbeanあるScopeにrequestそれが行った、AbstractRequestAttributesScopeこの実装を
AbstractRequestAttributesScope#get例外の最初の行で、次のコードがスローされました
@Override
public Object get(String name, ObjectFactory<?> objectFactory) {
RequestAttributes attributes = RequestContextHolder.currentRequestAttributes();
Object scopedObject = attributes.getAttribute(name, getScope());
if (scopedObject == null) {
scopedObject = objectFactory.getObject();
attributes.setAttribute(name, scopedObject, getScope());
// Retrieve object again, registering it for implicit session attribute updates.
// As a bonus, we also allow for potential decoration at the getAttribute level.
Object retrievedObject = attributes.getAttribute(name, getScope());
if (retrievedObject != null) {
// Only proceed with retrieved object if still present (the expected case).
// If it disappeared concurrently, we return our locally created instance.
scopedObject = retrievedObject;
}
}
return scopedObject;
}
ただし、xxl-jobはこのBeanを取得する必要はなく、xxl-jobに必要なBeanはすべてシングルトンです。しかし、xxl-jobコードを変更したくない場合はどうなりますか？
次に、新しいクラスを記述しますXxlJobSpringExecutorProxyはXxlJobSpringExecutorを継承します
public class XxlJobSpringExecutor extends XxlJobSpringExecutor {
@Override
public void afterPropertiesSet() throws Exception {
// init JobHandler Repository
initJobHandlerRepository(XxlJobSpringExecutor .getApplicationContext);
// init JobHandler Repository (for method)
initJobHandlerMethodRepository(XxlJobSpringExecutor .getApplicationContext);
// refresh GlueFactory
GlueFactory.refreshInstance(1);
// super start
super.start();
}
// destroy
@Override
public void destroy() {
super.destroy();
}
private void initJobHandlerRepository(ApplicationContext applicationContext) {
if (applicationContext == null) {
return;
}
// init job handler action
Map<String, Object> serviceBeanMap = applicationContext.getBeansWithAnnotation(JobHandler.class);
if (serviceBeanMap != null && serviceBeanMap.size() > 0) {
for (Object serviceBean : serviceBeanMap.values()) {
if (serviceBean instanceof IJobHandler) {
String name = serviceBean.getClass().getAnnotation(JobHandler.class).value();
IJobHandler handler = (IJobHandler) serviceBean;
if (loadJobHandler(name) != null) {
throw new RuntimeException("xxl-job jobhandler[" + name + "] naming conflicts.");
}
registJobHandler(name, handler);
}
}
}
}
private void initJobHandlerMethodRepository(ApplicationContext applicationContext) {
if (applicationContext == null) {
return;
}
// 修改掉这一行，然后初始化的时候使用我们自己这个类即可，意味只获取单例的beanDefinitionNames这样就不会取到Scope为其它的bean。
String[] beanDefinitionNames = applicationContext.getBeanNamesForType(Object.class, false, true);
for (String beanDefinitionName : beanDefinitionNames) {
Object bean = applicationContext.getBean(beanDefinitionName);
Method[] methods = bean.getClass().getDeclaredMethods();
for (Method method: methods) {
XxlJob xxlJob = AnnotationUtils.findAnnotation(method, XxlJob.class);
if (xxlJob != null) {
// name
String name = xxlJob.value();
if (name.trim().length() == 0) {
throw new RuntimeException("xxl-job method-jobhandler name invalid, for[" + bean.getClass() + "#"+ method.getName() +"] .");
}
if (loadJobHandler(name) != null) {
throw new RuntimeException("xxl-job jobhandler[" + name + "] naming conflicts.");
}
// execute method
if (!(method.getParameterTypes()!=null && method.getParameterTypes().length==1 && method.getParameterTypes()[0].isAssignableFrom(String.class))) {
throw new RuntimeException("xxl-job method-jobhandler param-classtype invalid, for[" + bean.getClass() + "#"+ method.getName() +"] , " +
"The correct method format like \" public ReturnT<String> execute(String param) \" .");
}
if (!method.getReturnType().isAssignableFrom(ReturnT.class)) {
throw new RuntimeException("xxl-job method-jobhandler return-classtype invalid, for[" + bean.getClass() + "#"+ method.getName() +"] , " +
"The correct method format like \" public ReturnT<String> execute(String param) \" .");
}
method.setAccessible(true);
// init and destory
Method initMethod = null;
Method destroyMethod = null;
if(xxlJob.init().trim().length() > 0) {
try {
initMethod = bean.getClass().getDeclaredMethod(xxlJob.init());
initMethod.setAccessible(true);
} catch (NoSuchMethodException e) {
throw new RuntimeException("xxl-job method-jobhandler initMethod invalid, for[" + bean.getClass() + "#"+ method.getName() +"] .");
}
}
if(xxlJob.destroy().trim().length() > 0) {
try {
destroyMethod = bean.getClass().getDeclaredMethod(xxlJob.destroy());
destroyMethod.setAccessible(true);
} catch (NoSuchMethodException e) {
throw new RuntimeException("xxl-job method-jobhandler destroyMethod invalid, for[" + bean.getClass() + "#"+ method.getName() +"] .");
}
}
// registry jobhandler
registJobHandler(name, new MethodJobHandler(bean, method, initMethod, destroyMethod));
}
}
}
}
それでおしまい。