java / intermediate
Snippet
Global Uncaught Exception Handling in Asynchronous Spring Tasks
Methods annotated with @Async that return void cannot propagate exceptions directly to caller threads. Implementing AsyncConfigurer allows configuring an AsyncUncaughtExceptionHandler to intercept and process uncaught errors occurring in background threads.
snippet.java
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@Configuration@EnableAsyncpublic class AsyncConfig implements AsyncConfigurer {@Overridepublic AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {return (throwable, method, params) -> {System.err.printf("Async error in %s with params %s: %s%n",method.getName(), Arrays.toString(params), throwable.getMessage());};}}
spring
Breakdown
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public class AsyncConfig implements AsyncConfigurer
Implements the Spring contract for customizing asynchronous execution behavior.
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public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler()
Overrides the factory method to return a custom handler for exceptions thrown by void async methods.
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return (throwable, method, params) -> {
Defines a lambda matching the functional interface to extract the exception, the invoked method, and arguments.