This module adds support for encoding and decoding JSON via Jackson Jr. This is a significantly smaller and faster version of Jackson, which may be of benefit in smaller runtime containers.
Add JacksonJrEncoder and/or JacksonJrDecoder to your Feign.Builder like so:
GitHub github = Feign.builder()
.encoder(new JacksonJrEncoder())
.decoder(new JacksonJrDecoder())
.target(GitHub.class, "https://api.github.com");If you want to customize the JSON object that is used, provide it to the JacksonJrEncoder and JacksonJrDecoder:
JSON json = Json.builder()
.register(JacksonAnnotationExtension.builder()
.withVisibility(JsonAutoDetect.Value.defaultVisibility())
.build())
.build();
GitHub github = Feign.builder()
.encoder(new JacksonJrEncoder(json))
.decoder(new JacksonJrDecoder(json))
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.target(GitHub.class, "https://api.github.com");Customisation is also possible by passing JacksonJrExtension objects
into the constructor of the JacksonJrEncoder or JacksonJrDecoder:
List<JacksonJrExtension> extensions = singletonList(JacksonAnnotationExtension.builder()
.withVisibility(JsonAutoDetect.Value.defaultVisibility())
.build());
GitHub github = Feign.builder()
.encoder(new JacksonJrEncoder(extensions))
.decoder(new JacksonJrDecoder(extensions))
.target(GitHub.class, "https://api.github.com");