如何捕获配置bean中的异常

Question

如何捕获doSomeThing（）方法调用引发的异常，然后再引发它？

@Configuration
Class conf{

@Bean
public Function<A, B> method() {
    return valueA -> {
    B valueB = doSomeThing(valueA);
    return valueB;
  };
}
}

Answer 1

无法捕获并抛出在函数接口中抛出的异常。但如果它是一个选中的异常，则可以进行如下处理：

@Configuration
class conf {

    @Bean
    public Function<A, B> method() {
        return valueA -> {
            B valueB = doSomeThing(valueA);
            return valueB;
        };
    }
    
    B doSomeThing(A valueA) {
        try {
            return new B();
        } catch (Exception e) {
            // you can convert checked exception into an unchecked exception here
            throw new RuntimeException()
        }
    }
}