The RestTemplate is smart to convert the URL with specific characters to URL encoded. But sometimes, we need to disable URL encoding in order to some specific characters are available on server side as its business requirement.
It's a legacy web service and bad design, but customer don't want to change for some reasons.
Disable Encoding URL
Set encoding encoding mode when initialing rest template.
DefaultUriBuilderFactory defaultUriBuilderFactory = new DefaultUriBuilderFactory();
defaultUriBuilderFactory.setEncodingMode(DefaultUriBuilderFactory.EncodingMode.NONE);
RestTemplate restTemplate = new RestTemplate();
restTemplate.setUriTemplateHandler(defaultUriBuilderFactory);
Using other encoding mode to satisfy different integration strategies.
TEMPLATE_AND_VALUES, VALUES_ONLY, URI_COMPONENT, NONE