如何在toString方法上使用Jackson序列化？

Question

I have already set up an exposed entity class through Jackson serialisation, which works well in my RestController .

Recently, I tried to create a Spring AOP to display the log, but it uses toString of the class, which throws StackOverflow exception since the class contains a bi-directional relationship.

Object result = joinPoint.proceed();
if (log.isDebugEnabled()) {
    log.debug("Exit: {}.{}() with result = {}", 
        joinPoint.getSignature().getDeclaringTypeName(),
        joinPoint.getSignature().getName(), 
        result);
}

How do I set up the toString method to use already configured Jackson serialisation?

Answer 1

I solved my problem by using ObjectMapper .

Object result = joinPoint.proceed();
if (log.isDebugEnabled()) {
    log.debug("Exit: {}.{}() with result = {}", 
        joinPoint.getSignature().getDeclaringTypeName(),
        joinPoint.getSignature().getName(), 
        new ObjectMapper().writeValueAsString(result));
}