Map&lt;String, String&gt; errors = new HashMap&lt;&gt;()<span>;</span>
Throwable <span>cause</span> = e.getCause()<span>;</span>
if (<span>cause</span> <span>instanceof </span>InvalidFormatException) {
    InvalidFormatException ex = (InvalidFormatException) <span>cause</span><span>;</span>
    for (<span>JsonMappingException.Reference </span>ref : ex.getPath()) {
        errors.put(ref.getFieldName(), <span>"invalid"</span>)<span>;</span>
    }
} else {
    errors.put(<span>"fields"</span>, <span>"invalid"</span>)<span>;</span>
}
return ResponseEntity.<span>badRequest(
</span>    errors
)<span>;</span>