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Moved spring-5-webclient example code to new test class, to verify everything is working as expected

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This commit is contained in:
Gerardo Roza 2021-01-23 11:36:58 -03:00
parent 27dfd5ca5a
commit 0de9172dc6
2 changed files with 110 additions and 95 deletions
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95
spring-5-reactive/src/main/java/com/baeldung/web/reactive/client/WebClientController.java
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@ -1,36 +1,12 @@
package com.baeldung.web.reactive.client; package com.baeldung.web.reactive.client;
import java.net.URI;
import java.nio.charset.Charset;
import java.time.ZonedDateTime;
import java.util.Collections;
import java.util.HashMap; import java.util.HashMap;
import java.util.Map; import java.util.Map;
import java.util.concurrent.TimeUnit;
import org.reactivestreams.Publisher;
import org.reactivestreams.Subscriber;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus; import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ReactiveHttpOutputMessage;
import org.springframework.http.client.reactive.ClientHttpRequest;
import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseStatus; import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController; import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.reactive.function.BodyInserter;
import org.springframework.web.reactive.function.BodyInserters;
import org.springframework.web.reactive.function.client.WebClient;
import io.netty.channel.ChannelOption;
import io.netty.handler.timeout.ReadTimeoutHandler;
import io.netty.handler.timeout.WriteTimeoutHandler;
import reactor.core.publisher.Mono;
import reactor.netty.http.client.HttpClient;
@RestController @RestController
public class WebClientController { public class WebClientController {
@ -42,75 +18,4 @@ public class WebClientController {
response.put("field", "value"); response.put("field", "value");
return response; return response;
} }
public void demonstrateWebClient() {
// request
WebClient.UriSpec<WebClient.RequestBodySpec> request1 = createWebClientWithServerURLAndDefaultValues().method(HttpMethod.POST);
WebClient.UriSpec<WebClient.RequestBodySpec> request2 = createWebClientWithServerURLAndDefaultValues().post();
// request body specifications
WebClient.RequestBodySpec uri1 = createWebClientWithServerURLAndDefaultValues().method(HttpMethod.POST)
.uri("/resource");
WebClient.RequestBodySpec uri2 = createWebClientWithServerURLAndDefaultValues().post()
.uri(URI.create("/resource"));
// request header specification
WebClient.RequestHeadersSpec<?> requestSpec1 = uri1.body(BodyInserters.fromPublisher(Mono.just("data"), String.class));
WebClient.RequestHeadersSpec<?> requestSpec2 = uri2.body(BodyInserters.fromValue("data"));
// inserters
BodyInserter<Publisher<String>, ReactiveHttpOutputMessage> inserter1 = BodyInserters.fromPublisher(Subscriber::onComplete, String.class);
LinkedMultiValueMap<String, String> map = new LinkedMultiValueMap<>();
map.add("key1", "value1");
map.add("key2", "value2");
BodyInserter<MultiValueMap<String, Object>, ClientHttpRequest> inserter2 = BodyInserters.fromMultipartData(map);
BodyInserter<Object, ReactiveHttpOutputMessage> inserter3 = BodyInserters.fromValue(new Object());
BodyInserter<String, ReactiveHttpOutputMessage> inserter4 = BodyInserters.fromValue("body");
// responses
WebClient.ResponseSpec response1 = uri1.body(inserter3)
.header(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.accept(MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML)
.acceptCharset(Charset.forName("UTF-8"))
.ifNoneMatch("*")
.ifModifiedSince(ZonedDateTime.now())
.retrieve();
String response2 = uri1.exchangeToMono(response -> response.bodyToMono(String.class))
.block();
String response3 = uri2.retrieve()
.bodyToMono(String.class)
.block();
WebClient.ResponseSpec response4 = requestSpec2.retrieve();
}
private WebClient createWebClient() {
return WebClient.create();
}
private WebClient createWebClientWithServerURL() {
return WebClient.create("http://localhost:8081");
}
private WebClient createWebClientConfiguringTimeout() {
HttpClient httpClient = HttpClient.create()
.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 5000)
.doOnConnected(conn -> conn.addHandlerLast(new ReadTimeoutHandler(5000, TimeUnit.MILLISECONDS))
.addHandlerLast(new WriteTimeoutHandler(5000, TimeUnit.MILLISECONDS)));
return WebClient.builder()
.clientConnector(new ReactorClientHttpConnector(httpClient))
.build();
}
private WebClient createWebClientWithServerURLAndDefaultValues() {
return WebClient.builder()
.baseUrl("http://localhost:8081")
.defaultCookie("cookieKey", "cookieValue")
.defaultHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.defaultUriVariables(Collections.singletonMap("url", "http://localhost:8080"))
.build();
}
} }

110
spring-5-reactive/src/test/java/com/baeldung/web/client/WebClientIntegrationTest.java Normal file
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@ -0,0 +1,110 @@
package com.baeldung.web.client;
import java.net.URI;
import java.nio.charset.Charset;
import java.time.ZonedDateTime;
import java.util.Collections;
import java.util.concurrent.TimeUnit;
import org.junit.jupiter.api.Test;
import org.reactivestreams.Publisher;
import org.reactivestreams.Subscriber;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.web.server.LocalServerPort;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.ReactiveHttpOutputMessage;
import org.springframework.http.client.reactive.ClientHttpRequest;
import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.reactive.function.BodyInserter;
import org.springframework.web.reactive.function.BodyInserters;
import org.springframework.web.reactive.function.client.WebClient;
import com.baeldung.web.reactive.client.WebClientApplication;
import io.netty.channel.ChannelOption;
import io.netty.handler.timeout.ReadTimeoutHandler;
import io.netty.handler.timeout.WriteTimeoutHandler;
import reactor.core.publisher.Mono;
import reactor.netty.http.client.HttpClient;
@SpringBootTest(classes = WebClientApplication.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class WebClientIntegrationTest {
@LocalServerPort
private int port;
@Test
public void demonstrateWebClient() {
// request
WebClient.UriSpec<WebClient.RequestBodySpec> request1 = createWebClientWithServerURLAndDefaultValues().method(HttpMethod.POST);
WebClient.UriSpec<WebClient.RequestBodySpec> request2 = createWebClientWithServerURLAndDefaultValues().post();
// request body specifications
WebClient.RequestBodySpec uri1 = createWebClientWithServerURLAndDefaultValues().method(HttpMethod.POST)
.uri("/resource");
WebClient.RequestBodySpec uri2 = createWebClientWithServerURLAndDefaultValues().post()
.uri(URI.create("/resource"));
// request header specification
WebClient.RequestHeadersSpec<?> requestSpec1 = uri1.body(BodyInserters.fromPublisher(Mono.just("data"), String.class));
WebClient.RequestHeadersSpec<?> requestSpec2 = uri2.body(BodyInserters.fromValue("data"));
// inserters
BodyInserter<Publisher<String>, ReactiveHttpOutputMessage> inserter1 = BodyInserters.fromPublisher(Subscriber::onComplete, String.class);
LinkedMultiValueMap<String, String> map = new LinkedMultiValueMap<>();
map.add("key1", "value1");
map.add("key2", "value2");
BodyInserter<MultiValueMap<String, Object>, ClientHttpRequest> inserter2 = BodyInserters.fromMultipartData(map);
BodyInserter<Object, ReactiveHttpOutputMessage> inserter3 = BodyInserters.fromValue(new Object());
BodyInserter<String, ReactiveHttpOutputMessage> inserter4 = BodyInserters.fromValue("body");
// responses
WebClient.ResponseSpec response1 = uri1.body(inserter3)
.header(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.accept(MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML)
.acceptCharset(Charset.forName("UTF-8"))
.ifNoneMatch("*")
.ifModifiedSince(ZonedDateTime.now())
.retrieve();
String response2 = uri1.exchangeToMono(response -> response.bodyToMono(String.class))
.block();
String response3 = uri2.retrieve()
.bodyToMono(String.class)
.block();
WebClient.ResponseSpec response4 = requestSpec2.retrieve();
}
private WebClient createWebClient() {
return WebClient.create();
}
private WebClient createWebClientWithServerURL() {
return WebClient.create("http://localhost:8081");
}
private WebClient createWebClientConfiguringTimeout() {
HttpClient httpClient = HttpClient.create()
.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 5000)
.doOnConnected(conn -> conn.addHandlerLast(new ReadTimeoutHandler(5000, TimeUnit.MILLISECONDS))
.addHandlerLast(new WriteTimeoutHandler(5000, TimeUnit.MILLISECONDS)));
return WebClient.builder()
.clientConnector(new ReactorClientHttpConnector(httpClient))
.build();
}
private WebClient createWebClientWithServerURLAndDefaultValues() {
return WebClient.builder()
.baseUrl("http://localhost:8081")
.defaultCookie("cookieKey", "cookieValue")
.defaultHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.defaultUriVariables(Collections.singletonMap("url", "http://localhost:8080"))
.build();
}
}