How to disable encoding using RestTemplate

Question

I am using REST template to intentionally send a % in request uri, something like /items/a%b

String responseEntity = restTemplate.exchange("/items/a%b",
             requestObj.getHttpMethod(), requestEntity, String.class);

The restTemplate is converting the endoding of this uri and it is becoming /items/a%25b which makes sense as the rest template by default encodes the uri.

I tried using UriComponent for disabling the encoding of the uri

UriComponents uriComponents = UriComponentsBuilder.fromPath("/items/a%b").build();
URI uri= uriComponents.toUri();

String responseEntity = restTemplate.exchange(uri,
             requestObj.getHttpMethod(), requestEntity, String.class);

But this is not working as the uri again is of type URI which do the encoding. I am sure I am not using the UriComponents the right way.

I would really appreciate if anyone could point out what's the right way of disabling the encoding.

Thanks.

The request you say you want to send is illegal. Why do you believe that you need a dangling percent sign? — chrylis -cautiouslyoptimistic-, Dec 14 '15 at 12:45
I am writing a test to make the server handling it gracefully. Its for a full integration tests hitting a remote server. so nothing is mocked. — tintin, Dec 14 '15 at 12:52
The server *shouldn't* handle it "gracefully", it should return a 400 error. — chrylis -cautiouslyoptimistic-, Dec 14 '15 at 18:28
That's what I need to test that the server returns 400, but the problem is that the restTemplate client is not able to send the request. I tried it using fiddler and the clients are able to send the request with % in the uri. — tintin, Dec 15 '15 at 10:02

score 12 · Answer 1 · answered Dec 16 '15 at 16:32

12

from the UriComponentsBuilder doc, exists method build(boolean encoded)

build(boolean encoded) Builds a UriComponents instance from the various components contained in this builder.

UriComponents uriComponents = UriComponentsBuilder.fromPath("/items/a%b").build(true);

answered Dec 16 '15 at 16:32

Nikolay Rusev

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1

This is the best answer when you don't want to stop encoding on all `RestTemplate` usages. – Smile Jan 19 '22 at 08:58

score 11 · Answer 2 · answered Dec 16 '19 at 06:42

I feel this is best way to disable encoding in RestTemplate which works fine for me

@Bean
public RestTemplate getRestTemplate() {
    RestTemplate restTemplate = new RestTemplate();
    DefaultUriBuilderFactory defaultUriBuilderFactory = new DefaultUriBuilderFactory();
    defaultUriBuilderFactory.setEncodingMode(DefaultUriBuilderFactory.EncodingMode.NONE);
    restTemplate.setUriTemplateHandler(defaultUriBuilderFactory);
    return restTemplate;
}

How to disable encoding using RestTemplate

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