我升级到io.projectreactor.netty:reactor-netty-http:1.0.5后，他们改变了reactor.netty.http.client.HttpClient类，在以下代码中，可以编译并且运行得到预期的结果。(我不确定哪个是最小版本，我是从较旧的版本进行升级的，但我猜测它是1.0.0。这里是一个传递依赖项，我将spring-boot-starter-webflux从2.3.4.RELEASE升级到2.4.4。)
关键部分是调用wiretap()：
wiretap("reactor.netty.http.client.HttpClient", LogLevel.DEBUG, AdvancedByteBufFormat.TEXTUAL, StandardCharsets.UTF_8)
它还记录请求和响应的头部和主体。
整个上下文如下：
package com.example;
import io.netty.handler.logging.LogLevel;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.web.reactive.function.BodyInserters;
import org.springframework.web.reactive.function.client.WebClient;
import reactor.core.publisher.Mono;
import reactor.netty.http.client.HttpClient;
import reactor.netty.transport.logging.AdvancedByteBufFormat;
import java.nio.charset.StandardCharsets;
@Slf4j
class RestClientTest {
private WebClient createWebClient() {
final HttpClient httpClient = HttpClient.create()
.wiretap(HttpClient.class.getCanonicalName(), LogLevel.DEBUG, AdvancedByteBufFormat.TEXTUAL, StandardCharsets.UTF_8);
return WebClient.builder()
.clientConnector(new ReactorClientHttpConnector(httpClient))
.build();
}
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
private static class User {
int id;
int userId;
String title;
String body;
}
@Test
void createUsersReactive() {
final WebClient webClient = createWebClient();
final String url = "http://jsonplaceholder.typicode.com/posts";
final Mono<User> userMono = webClient.method(HttpMethod.POST)
.uri(url)
.contentType(MediaType.APPLICATION_JSON_UTF8)
.header("X-My-Header", "MyValue1", "MyValue2")
.body(BodyInserters.fromValue(User.builder().userId(1).title("foo").body("bar").build()))
.retrieve()
.bodyToMono(User.class);
final User user = userMono.block();
log.info("Created user: " + user);
}
}
而且日志输出是符合您要求的易于阅读的格式:
... reactor.netty.http.client.HttpClient : [id:e7d7ed93] REGISTERED
... reactor.netty.http.client.HttpClient : [id:e7d7ed93] CONNECT: jsonplaceholder.typicode.com/<unresolved>:80
... reactor.netty.http.client.HttpClient : [id:e7d7ed93] ACTIVE
... r.netty.http.client.HttpClientConnect : [id:e7d7ed93-1] Handler is being applied: {uri=http://jsonplaceholder.typicode.com/posts, method=POST}
... reactor.netty.http.client.HttpClient : [id:e7d7ed93-1] WRITE: 217B POST /posts HTTP/1.1
user-agent: ReactorNetty/1.0.5
host: jsonplaceholder.typicode.com
accept: */*
Content-Type: application/json;charset=UTF-8
X-My-Header: MyValue1
X-My-Header: MyValue2
content-length: 46
... reactor.netty.http.client.HttpClient : [id:e7d7ed93-1] WRITE: 46B {"id":0,"userId":1,"title":"foo","body":"bar"}
... reactor.netty.http.client.HttpClient : [id:e7d7ed93-1] FLUSH
... reactor.netty.http.client.HttpClient : [id:e7d7ed93-1] READ: 1347B HTTP/1.1 201 Created
Date: Tue, 13 Apr 2021 12:49:33 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 65
X-Powered-By: Express
X-Ratelimit-Limit: 1000
X-Ratelimit-Remaining: 999
X-Ratelimit-Reset: 1618318233
Vary: Origin, X-HTTP-Method-Override, Accept-Encoding
Access-Control-Allow-Credentials: true
Cache-Control: no-cache
Pragma: no-cache
Expires: -1
Access-Control-Expose-Headers: Location
Location: http://jsonplaceholder.typicode.com/posts/101
X-Content-Type-Options: nosniff
Etag: W/"41-0LtsWqhuQ7Zsjlj0tYnOrT/Vw5o"
Via: 1.1 vegur
CF-Cache-Status: DYNAMIC
cf-request-id: 096ce0bd560000736722853000000001
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=laAKjgGcoi8SLu%2F6VX5pQIAksdmj9xi31elC5Ld97eljznKIpYjdkQsittoMJp3lJoQIwOACmj89bKSa%2Ff15gRHRmyasV2Xcl%2FmVjJBJm7ytbWocp39UBd90JwVM"}],"max_age":604800,"group":"cf-nel"}
NEL: {"max_age":604800,"report_to":"cf-nel"}
Server: cloudflare
CF-RAY: 63f4d0a88ed07367-CPH
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400
Proxy-Connection: Keep-Alive
Connection: Keep-Alive
Set-Cookie: __cfduid=d11c86fbd953f7cf768cf7db0c346f22b1618318173; expires=Thu, 13-May-21 12:49:33 GMT; path=/; domain=.typicode.com; HttpOnly; SameSite=Lax
{
"id": 101,
"userId": 1,
"title": "foo",
"body": "bar"
}
... r.n.http.client.HttpClientOperations : [id:e7d7ed93-1] Received response (auto-read:false) : [Date=Tue, 13 Apr 2021 12:49:33 GMT, Content-Type=application/json; charset=utf-8, X-Powered-By=Express, X-Ratelimit-Limit=1000, X-Ratelimit-Remaining=999, X-Ratelimit-Reset=1618318233, Vary=Origin, X-HTTP-Method-Override, Accept-Encoding, Access-Control-Allow-Credentials=true, Cache-Control=no-cache, Pragma=no-cache, Expires=-1, Access-Control-Expose-Headers=Location, Location=http://jsonplaceholder.typicode.com/posts/101, X-Content-Type-Options=nosniff, Etag=W/"41-0LtsWqhuQ7Zsjlj0tYnOrT/Vw5o", Via=1.1 vegur, CF-Cache-Status=DYNAMIC, cf-request-id=096ce0bd560000736722853000000001, Report-To={"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=laAKjgGcoi8SLu%2F6VX5pQIAksdmj9xi31elC5Ld97eljznKIpYjdkQsittoMJp3lJoQIwOACmj89bKSa%2Ff15gRHRmyasV2Xcl%2FmVjJBJm7ytbWocp39UBd90JwVM"}],"max_age":604800,"group":"cf-nel"}, NEL={"max_age":604800,"report_to":"cf-nel"}, Server=cloudflare, CF-RAY=63f4d0a88ed07367-CPH, alt-svc=h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400, Proxy-Connection=Keep-Alive, Connection=Keep-Alive, Set-Cookie=__cfduid=d11c86fbd953f7cf768cf7db0c346f22b1618318173; expires=Thu, 13-May-21 12:49:33 GMT; path=/; domain=.typicode.com; HttpOnly; SameSite=Lax, content-length=65]
... r.n.http.client.HttpClientOperations : [id:e7d7ed93-1] Received last HTTP packet
... reactor.netty.http.client.HttpClient : [id:e7d7ed93] READ COMPLETE
... com.example.RestClientTest : Created user: RestClientIT.User(id=101, userId=1, title=foo, body=bar)
