我正试图通过WebClient发布以获取Microsoft令牌：
public WebClient getWebclient() {
TcpClient client = TcpClient.create()
.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10000)
.doOnConnected(connection -> connection.addHandlerLast(new ReadTimeoutHandler(15)).addHandlerLast(new WriteTimeoutHandler(15)));
ExchangeStrategies strategies = ExchangeStrategies.builder()
.codecs(configurer -> {
configurer.registerDefaults(true);
FormHttpMessageReader formHttpMessageReader = new FormHttpMessageReader();
formHttpMessageReader.setEnableLoggingRequestDetails(true);
configurer.customCodecs().reader(formHttpMessageReader);
})
.build();
return WebClient.builder()
.clientConnector(new ReactorClientHttpConnector(HttpClient.from(client).followRedirect(true)))
.exchangeStrategies(strategies)
.filter(logRequest())
.filter(logResponse())
.build();
}
MultiValueMap<String, String> credentials = new LinkedMultiValueMap<>();
credentials.add("grant_type", "password");
credentials.add("client_id", oauthClientId);
credentials.add("resource", oauthResource);
credentials.add("scope", oauthScope);
credentials.add("username", oauthUsername);
credentials.add("password", oauthPassword);
Mono<MicrosoftToken> response = webClientService.getWebclient().post()
.uri(oauthUrl)
.contentType(MediaType.APPLICATION_FORM_URLENCODED)
.body(BodyInserters.fromFormData(credentials))
.retrieve()
.onStatus(HttpStatus::is4xxClientError, clientResponse ->
Mono.error(new WebClientException(clientResponse.bodyToMono(String.class), clientResponse.statusCode())))
.bodyToMono(MicrosoftToken.class);
this.cachedToken = response.block();
问题在于，Microsoft无法处理内容类型：application / x-www-form-urlencoded; charset = UTF-8 。
Spring会自动将charset = UTF-8添加到请求中。我需要摆脱这个额外的字符集。我需要一个 Content-Type：应用程序/ x-www-form-urlencoded 。这可能吗？否则，我需要将我的春季版本降级到2.0.0，其中不会自动添加字符集。
我的调试日志打印：
2019-03-14 10:08:42 DEBUG [reactor.netty.channel.ChannelOperationsHandler]:
[id: 0x5d6effce, L:/192.168.148.14:52285 -
R:login.microsoftonline.de/51.4.136.42:443] Writing object
DefaultHttpRequest(decodeResult: success, version: HTTP/1.1)
POST /common/oauth2/token HTTP/1.1
user-agent: ReactorNetty/0.8.4.RELEASE
host: login.microsoftonline.de
Content-Type: application/x-www-form-urlencoded;charset=UTF-8
Content-Length: 205
2019-03-14 10:08:42 DEBUG [reactor.netty.channel.ChannelOperationsHandler]:
[id: 0x5d6effce, L:/192.168.148.14:52285 -
R:login.microsoftonline.de/51.4.136.42:443] Writing object
我在春季版本2.0.0上对此进行了测试，并且没有像在新版本中那样添加字符集：
POST /common/oauth2/token HTTP/1.1
user-agent: ReactorNetty/0.7.5.RELEASE
host: login.microsoftonline.de
accept-encoding: gzip
Content-Type: application/x-www-form-urlencoded
Content-Length: 205
答案 0 :(得分：0)
有两种方法可以做到：
webClient
.mutate()
.defaultHeaders(headers -> {
headers.add("Content-Type", ContentType.APPLICATION_FORM_URLENCODED.getMimeType()
}).build()
. uri(uri)
...
OR
webClient
.post()
.uri(uri)
.body(body)
.headers(headers -> getHttpHeaders())
...
private HttpHeaders getHttpHeaders(){
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", "application/x-www-form-urlencoded")
return headers;
}
只有几种方法可以利用.headers或.defaultHeaders中的标头使用者。
但是我不认为字符集是老实的问题。如果您在响应中收到application / json，则可能是因为Microsoft通过您在应用注册中指定的重定向URL转发带有该标头的请求。
好消息是，这可能是可取的，因为Microsoft将令牌字段返回为json，这使您可以调用.bodyToMono（MicrosoftToken）。我记得BodyInserters.fromFormData有问题，因为它实际上并未在MultiValueMap中对值进行编码。
这是我正在使用的：
private BodyInserter<String, ReactiveHttpOutputMessage> getBodyInserter(Map<String,String> parameters) {
credentials.add("grant_type", encode("password"));
credentials.add("client_id", encode(oauthClientId));
credentials.add("resource", encode(oauthResource));
// and so on..
// note that parameters is a regular Map - not a MultiValueMap
BodyInserter<String, ReactiveHttpOutputMessage> bodyInserter = BodyInserters.fromObject(
parameters.entrySet().stream()
.map(entry -> entry.getKey().concat("=").concat(entry.getValue()))
.collect(Collectors.joining("&", "", "")));
return bodyInserter;
}
private String encode(String str) {
try {
return URLEncoder.encode(str, StandardCharsets.UTF_8.name());
} catch (UnsupportedEncodingException e) {
log.error("Error encoding req body", e);
}
}
答案 1 :(得分：0)
这花了我一个上午的大部分时间来找出答案，但是我终于做到了。问题是Webflux BodyInserters.fromFormData 始终始终将内容类型设置为application/x-www-form-urlencoded;charset=...，无论您在标题中设置什么。
要解决此问题，请先定义此方法：
/**
* This method is unfortunately necessary because of Spring Webflux's propensity to add {@code ";charset=..."}
* to the {@code Content-Type} header, which the Generic Chinese Device doesn't handle properly.
*
* @return a {@link FormInserter} that doesn't add the character set to the content type header
*/
private FormInserter<String> formInserter() {
return new FormInserter<String>() {
private final MultiValueMap<String, String> data = new LinkedMultiValueMap<>();
@Override public FormInserter<String> with(final String key, final String value) {
data.add(key, value);
return this;
}
@Override public FormInserter<String> with(final MultiValueMap<String, String> values) {
data.addAll(values);
return this;
}
@Override public Mono<Void> insert(final ClientHttpRequest outputMessage, final Context context) {
final ResolvableType formDataType =
ResolvableType.forClassWithGenerics(MultiValueMap.class, String.class, String.class);
return new FormHttpMessageWriter() {
@Override protected MediaType getMediaType(final MediaType mediaType) {
if (MediaType.APPLICATION_FORM_URLENCODED.equals(mediaType)) {
return mediaType;
} else {
return super.getMediaType(mediaType);
}
}
}.write(Mono.just(this.data), formDataType,
MediaType.APPLICATION_FORM_URLENCODED,
outputMessage,
context.hints());
}
};
}
然后，要调用您的Web服务，请执行以下操作：
final SomeResponseObject response = WebClient
.builder()
.build()
.post()
.uri(someOrOtherUri)
.body(formInserter().with("param1", "value1")
.with("param2", "value2")
)
.retrieve()
.bodyToFlux(SomeReponseObject.class)
.blockLast();
请注意，上面的块主要用于演示目的。您可能希望也可能不想阻止并等待响应。