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Add body conversion capabilities in RestClient::exchange

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This commit introduces a ConvertibleClientHttpResponse type that
extends ClientHttpResponse, and that can convert the body to a desired
type. Before this commit, it was not easy to use the configured HTTP
message converters in combination with RestClient::exchange.

Closes gh-31597
This commit is contained in:
Arjen Poutsma
2023-11-13 15:30:10 +01:00
parent dd97dee7fd
commit 8f21479234
3 changed files with 212 additions and 60 deletions
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49
spring-web/src/test/java/org/springframework/web/client/RestClientIntegrationTests.java
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@@ -661,6 +661,55 @@ class RestClientIntegrationTests {
});
}
@ParameterizedRestClientTest
void exchangeForJson(ClientHttpRequestFactory requestFactory) {
startServer(requestFactory);
prepareResponse(response -> response
.setHeader("Content-Type", "application/json")
.setBody("{\"bar\":\"barbar\",\"foo\":\"foofoo\"}"));
Pojo result = this.restClient.get()
.uri("/pojo")
.accept(MediaType.APPLICATION_JSON)
.exchange((request, response) -> response.bodyTo(Pojo.class));
assertThat(result.getFoo()).isEqualTo("foofoo");
assertThat(result.getBar()).isEqualTo("barbar");
expectRequestCount(1);
expectRequest(request -> {
assertThat(request.getPath()).isEqualTo("/pojo");
assertThat(request.getHeader(HttpHeaders.ACCEPT)).isEqualTo("application/json");
});
}
@ParameterizedRestClientTest
void exchangeForJsonArray(ClientHttpRequestFactory requestFactory) {
startServer(requestFactory);
prepareResponse(response -> response
.setHeader("Content-Type", "application/json")
.setBody("[{\"bar\":\"bar1\",\"foo\":\"foo1\"},{\"bar\":\"bar2\",\"foo\":\"foo2\"}]"));
List<Pojo> result = this.restClient.get()
.uri("/pojo")
.accept(MediaType.APPLICATION_JSON)
.exchange((request, response) -> response.bodyTo(new ParameterizedTypeReference<>() {}));
assertThat(result).hasSize(2);
assertThat(result.get(0).getFoo()).isEqualTo("foo1");
assertThat(result.get(0).getBar()).isEqualTo("bar1");
assertThat(result.get(1).getFoo()).isEqualTo("foo2");
assertThat(result.get(1).getBar()).isEqualTo("bar2");
expectRequestCount(1);
expectRequest(request -> {
assertThat(request.getPath()).isEqualTo("/pojo");
assertThat(request.getHeader(HttpHeaders.ACCEPT)).isEqualTo("application/json");
});
}
@ParameterizedRestClientTest
void exchangeFor404(ClientHttpRequestFactory requestFactory) {
startServer(requestFactory);