reactor.core.publisher.Mono.cast()方法的使用及代码示例

x33g5p2x  于2022-01-24 转载在 其他  
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本文整理了Java中reactor.core.publisher.Mono.cast()方法的一些代码示例，展示了Mono.cast()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Mono.cast()方法的具体详情如下：
包路径：reactor.core.publisher.Mono
类名称：Mono
方法名：cast

Mono.cast介绍

[英]Cast the current Mono produced type into a target produced type.
[中]将当前单声道生成的类型转换为目标生成的类型。

代码示例

代码示例来源：origin: spring-projects/spring-framework

@Override
public Mono<Object> resolveArgument(
    MethodParameter parameter, BindingContext context, ServerWebExchange exchange) {
  Object errors = getErrors(parameter, context);
  if (Mono.class.isAssignableFrom(errors.getClass())) {
    return ((Mono<?>) errors).cast(Object.class);
  }
  else if (Errors.class.isAssignableFrom(errors.getClass())) {
    return Mono.just(errors);
  }
  else {
    throw new IllegalStateException("Unexpected Errors/BindingResult type: " + errors.getClass().getName());
  }
}

代码示例来源：origin: spring-projects/spring-security

/**
 * Attempts to load the client registration id from the current {@link Authentication}
 * @return
 */
private Mono<String> clientRegistrationId(Mono<Authentication> authentication) {
  return authentication
      .filter(t -> this.defaultOAuth2AuthorizedClient && t instanceof OAuth2AuthenticationToken)
      .cast(OAuth2AuthenticationToken.class)
      .map(OAuth2AuthenticationToken::getAuthorizedClientRegistrationId);
}

代码示例来源：origin: spring-projects/spring-security

/**
 * Attempts to load the client registration id from the current {@link Authentication}
 * @return
 */
private Mono<String> clientRegistrationId(Mono<Authentication> authentication) {
  return authentication
      .filter(t -> this.defaultOAuth2AuthorizedClient && t instanceof OAuth2AuthenticationToken)
      .cast(OAuth2AuthenticationToken.class)
      .map(OAuth2AuthenticationToken::getAuthorizedClientRegistrationId);
}

代码示例来源：origin: spring-projects/spring-security

@Override
public Mono<Authentication> authenticate(Authentication authentication) {
  return Mono.justOrEmpty(authentication)
      .filter(a -> a instanceof  BearerTokenAuthenticationToken)
      .cast(BearerTokenAuthenticationToken.class)
      .map(BearerTokenAuthenticationToken::getToken)
      .flatMap(this.jwtDecoder::decode)
      .flatMap(this.jwtAuthenticationConverter::convert)
      .cast(Authentication.class)
      .onErrorMap(JwtException.class, this::onError);
}

代码示例来源：origin: spring-projects/spring-framework

@Override
public Mono<Object> readMono(
    ResolvableType elementType, ReactiveHttpInputMessage message, Map<String, Object> hints) {
  // We're ahead of String + "*/*"
  // Let's see if we can aggregate the output (lest we time out)...
  if (elementType.resolve() == String.class) {
    Flux<DataBuffer> body = message.getBody();
    return stringDecoder.decodeToMono(body, elementType, null, null).cast(Object.class);
  }
  return Mono.error(new UnsupportedOperationException(
      "ServerSentEventHttpMessageReader only supports reading stream of events as a Flux"));
}

代码示例来源：origin: spring-projects/spring-security

@Override
public Mono<OAuth2AuthorizationRequest> resolve(ServerWebExchange exchange) {
  return this.authorizationRequestMatcher.matches(exchange)
      .filter(matchResult -> matchResult.isMatch())
      .map(ServerWebExchangeMatcher.MatchResult::getVariables)
      .map(variables -> variables.get(DEFAULT_REGISTRATION_ID_URI_VARIABLE_NAME))
      .cast(String.class)
      .flatMap(clientRegistrationId -> resolve(exchange, clientRegistrationId));
}

代码示例来源：origin: spring-projects/spring-security

@Override
public Mono<Void> handle(ServerWebExchange exchange, AccessDeniedException denied) {
  Map<String, String> parameters = new LinkedHashMap<>();
  if (this.realmName != null) {
    parameters.put("realm", this.realmName);
  }
  return exchange.getPrincipal()
      .filter(AbstractOAuth2TokenAuthenticationToken.class::isInstance)
      .cast(AbstractOAuth2TokenAuthenticationToken.class)
      .map(token -> errorMessageParameters(token, parameters))
      .switchIfEmpty(Mono.just(parameters))
      .flatMap(params -> respond(exchange, params));
}

代码示例来源：origin: org.springframework/spring-web

@Override
public Mono<Object> readMono(
    ResolvableType elementType, ReactiveHttpInputMessage message, Map<String, Object> hints) {
  // We're ahead of String + "*/*"
  // Let's see if we can aggregate the output (lest we time out)...
  if (elementType.resolve() == String.class) {
    Flux<DataBuffer> body = message.getBody();
    return stringDecoder.decodeToMono(body, elementType, null, null).cast(Object.class);
  }
  return Mono.error(new UnsupportedOperationException(
      "ServerSentEventHttpMessageReader only supports reading stream of events as a Flux"));
}

代码示例来源：origin: reactor/reactor-core

@Test(expected = NullPointerException.class)
public void sourceNull() {
  Mono.just(1)
    .cast(null);
}

代码示例来源：origin: spring-projects/spring-framework

return parts.next().cast(Object.class);
MethodParameter elementType = parameter.nested();
if (Part.class.isAssignableFrom(elementType.getNestedParameterType())) {
  return parts.collectList().cast(Object.class);
      .collectList().cast(Object.class);
  .next().cast(Object.class);

代码示例来源：origin: spring-projects/spring-security

private BearerTokenAuthenticationToken convertToToken(MockServerHttpRequest request) {
    MockServerWebExchange exchange = MockServerWebExchange.from(request);
    return this.converter.convert(exchange).cast(BearerTokenAuthenticationToken.class).block();
  }
}

代码示例来源：origin: spring-projects/spring-framework

@Test  // SPR-15331
public void decodeFullContentAsString() {
  String body = "data:foo\ndata:bar\n\ndata:baz\n\n";
  MockServerHttpRequest request = MockServerHttpRequest.post("/")
      .body(Mono.just(stringBuffer(body)));
  String actual = messageReader
      .readMono(ResolvableType.forClass(String.class), request, Collections.emptyMap())
      .cast(String.class)
      .block(Duration.ZERO);
  assertEquals(body, actual);
}

代码示例来源：origin: spring-projects/spring-data-redis

@SuppressWarnings({ "unchecked", "rawtypes" })
  protected Mono<RedisReactiveCommands<ByteBuffer, ByteBuffer>> getCommands(RedisNode node) {

    if (StringUtils.hasText(node.getId())) {
      return getConnection().cast(StatefulRedisClusterConnection.class)
          .map(it -> it.getConnection(node.getId()).reactive());
    }

    return getConnection().flatMap(it -> Mono.fromCompletionStage(it.getConnectionAsync(node.getHost(), node.getPort()))
        .map(StatefulRedisConnection::reactive));
  }
}

代码示例来源：origin: reactor/reactor-core

@Test
public void error() {
  StepVerifier.create(Mono.just(1)
              .cast(String.class))
        .verifyError(ClassCastException.class);
}

代码示例来源：origin: spring-projects/spring-security

@Override
  public Mono<Authentication> authenticate(Authentication authentication) {
    return Mono.defer(() -> {
      OAuth2AuthorizationCodeAuthenticationToken token = (OAuth2AuthorizationCodeAuthenticationToken) authentication;

      // Section 3.1.2.1 Authentication Request - http://openid.net/specs/openid-connect-core-1_0.html#AuthRequest
      // scope REQUIRED. OpenID Connect requests MUST contain the "openid" scope value.
      if (token.getAuthorizationExchange()
          .getAuthorizationRequest().getScopes().contains("openid")) {
        // This is an OpenID Connect Authentication Request so return null
        // and let OidcAuthorizationCodeReactiveAuthenticationManager handle it instead once one is created
        // FIXME: Once we create OidcAuthorizationCodeReactiveAuthenticationManager uncomment below
//                return Mono.empty();
      }

      return this.authorizationCodeManager.authenticate(token)
          .onErrorMap(OAuth2AuthorizationException.class, e -> new OAuth2AuthenticationException(e.getError(), e.getError().toString()))
          .cast(OAuth2AuthorizationCodeAuthenticationToken.class)
          .flatMap(this::onSuccess);
    });
  }

代码示例来源：origin: spring-projects/spring-framework

@Test
public void transformExtLinksNotAllowed() {
  MockServerWebExchange exchange = MockServerWebExchange.from(get("/static/external.css"));
  List<ResourceTransformer> transformers = Collections.singletonList(new CssLinkResourceTransformer());
  ResourceResolverChain mockChain = Mockito.mock(DefaultResourceResolverChain.class);
  ResourceTransformerChain chain = new DefaultResourceTransformerChain(mockChain, transformers);
  Resource resource = getResource("external.css");
  String expected = "@import url(\"http://example.org/fonts/css\");\n" +
      "body { background: url(\"file:///home/spring/image.png\") }\n" +
      "figure { background: url(\"//example.org/style.css\")}";
  StepVerifier.create(chain.transform(exchange, resource)
      .cast(TransformedResource.class))
      .consumeNextWith(transformedResource -> {
        String result = new String(transformedResource.getByteArray(), StandardCharsets.UTF_8);
        result = StringUtils.deleteAny(result, "\r");
        assertEquals(expected, result);
      })
      .expectComplete()
      .verify();
  List<Resource> locations = Collections.singletonList(resource);
  Mockito.verify(mockChain, Mockito.never()).resolveUrlPath("http://example.org/fonts/css", locations);
  Mockito.verify(mockChain, Mockito.never()).resolveUrlPath("file:///home/spring/image.png", locations);
  Mockito.verify(mockChain, Mockito.never()).resolveUrlPath("//example.org/style.css", locations);
}

代码示例来源：origin: spring-projects/spring-security

@Test
public void findByUsernameWhenClearCredentialsThenFindByUsernameStillHasCredentials() {
  User foundUser = users.findByUsername(USER_DETAILS.getUsername()).cast(User.class).block();
  assertThat(foundUser.getPassword()).isNotEmpty();
  foundUser.eraseCredentials();
  assertThat(foundUser.getPassword()).isNull();
  foundUser = users.findByUsername(USER_DETAILS.getUsername()).cast(User.class).block();
  assertThat(foundUser.getPassword()).isNotEmpty();
}

代码示例来源：origin: spring-projects/spring-security

private static Mono<AccessTokenResponse> oauth2AccessTokenResponse(TokenResponse tokenResponse) {
  if (tokenResponse.indicatesSuccess()) {
    return Mono.just(tokenResponse)
        .cast(AccessTokenResponse.class);
  }
  TokenErrorResponse tokenErrorResponse = (TokenErrorResponse) tokenResponse;
  ErrorObject errorObject = tokenErrorResponse.getErrorObject();
  OAuth2Error oauth2Error;
  if (errorObject == null) {
    oauth2Error = new OAuth2Error(OAuth2ErrorCodes.SERVER_ERROR);
  } else {
    oauth2Error = new OAuth2Error(
        errorObject.getCode() != null ? errorObject.getCode() : OAuth2ErrorCodes.SERVER_ERROR,
        errorObject.getDescription(),
        errorObject.getURI() != null ? errorObject.getURI().toString() : null);
  }
  return Mono.error(new OAuth2AuthorizationException(oauth2Error));
}

代码示例来源：origin: reactor/reactor-core

@Test
public void normal() {
  StepVerifier.create(Mono.just(1)
              .cast(Number.class))
        .expectNext(1)
        .verifyComplete();
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void transform() {
  MockServerWebExchange exchange = MockServerWebExchange.from(get("/static/main.css"));
  Resource css = getResource("main.css");
  String expected = "\n" +
      "@import url(\"/static/bar-11e16cf79faee7ac698c805cf28248d2.css?#iefix\");\n" +
      "@import url('/static/bar-11e16cf79faee7ac698c805cf28248d2.css#bla-normal');\n" +
      "@import url(/static/bar-11e16cf79faee7ac698c805cf28248d2.css);\n\n" +
      "@import \"/static/foo-e36d2e05253c6c7085a91522ce43a0b4.css\";\n" +
      "@import '/static/foo-e36d2e05253c6c7085a91522ce43a0b4.css';\n\n" +
      "body { background: url(\"/static/images/image-f448cd1d5dba82b774f3202c878230b3.png?#iefix\") }\n";
  StepVerifier.create(this.transformerChain.transform(exchange, css)
      .cast(TransformedResource.class))
      .consumeNextWith(transformedResource -> {
        String result = new String(transformedResource.getByteArray(), StandardCharsets.UTF_8);
        result = StringUtils.deleteAny(result, "\r");
        assertEquals(expected, result);
      })
      .expectComplete()
      .verify();
}

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