Java webflux构造了不正确的URL值

我想使用SpringWebFlux发出POST请求。我试过这个：

Web客户端构建：

public RestClient(String gatewayUrl, String token, String username, String password, SslContext sslContext) {
        this.token = token;
        this.gatewayUrl = gatewayUrl;
        WebClient.Builder builder = WebClient.builder().baseUrl(gatewayUrl);
        if (sslContext != null) {
            HttpClient httpClient = HttpClient.create().secure(sslContextSpec -> sslContextSpec.sslContext(sslContext));
            ClientHttpConnector httpConnector = new ReactorClientHttpConnector(httpClient);
            builder.clientConnector(httpConnector);
        }
        if (username != null && password != null) {
            builder.filter(basicAuthentication(username, password));
        }
        client = builder.build();
    }


......

public class RestClientBuilder {
    private String token;
    private String username;
    private String password;
    private URL gatewayUrl;
    private SslContextBuilder sslContextBuilder;

    public static RestClientBuilder builder() {
        return new RestClientBuilder();
    }

    public RestClientBuilder token(String token) {
        this.token = validateAndTrim(token, "Token");
        return this;
    }

    public RestClientBuilder usernamePassword(String username, String password) {
        this.username = validateAndTrim(username, "Username");
        this.password = validateAndTrim(password, "Password");
        return this;
    }

    private String validateAndTrim(String value, final String parameter) {
        if (value == null || value.trim().isEmpty()) {
            throw new IllegalArgumentException(parameter + " is empty");
        }
        return value.trim();
    }

    public RestClientBuilder gatewayUrl(String gatewayUrl) {
        String urlSt = validateAndTrim(gatewayUrl, "Gateway URL");
        try {
            this.gatewayUrl = new URL(urlSt);
        } catch (MalformedURLException e) {
            throw new IllegalArgumentException("Malformed URL: " + urlSt, e);
        }
        return this;
    }

    public RestClientBuilder truststore(File truststoreFile) {
        getSslContextBuilder().trustManager(truststoreFile);
        return this;
    }

    public RestClientBuilder sslCertificate(File keyCertChainFile, File keyFile, String keyPassword) {
        getSslContextBuilder().keyManager(keyCertChainFile, keyFile, keyPassword);
        return this;
    }

    public RestClient build() throws SSLException {
        SslContext sslContext = sslContextBuilder != null ? sslContextBuilder.build() : null;
        return new RestClient(gatewayUrl.toString(), token, username, password, sslContext);
    }

    private SslContextBuilder getSslContextBuilder() {
        if (sslContextBuilder == null) {
            sslContextBuilder = SslContextBuilder.forClient();
        }
        return sslContextBuilder;
    }

}

成功测试：

        client.post()
            .uri("https://test.oppwa.com/v1/checkouts?entityId=1234567&amount=92.00&currency=GBP&paymentType=DB")
            .header(HttpHeaders.USER_AGENT, "Mozilla/5.0")
            .header(HttpHeaders.AUTHORIZATION, "Bearer 11111111")
            .accept(MediaType.APPLICATION_JSON)
            .contentType(MediaType.APPLICATION_FORM_URLENCODED)
            .retrieve()
            .bodyToMono(SaleResponse.class);

请求失败：

MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
        map.add("entityId", "1234567");
        map.add("amount", "92.00");
        map.add("currency", "GBP");
        map.add("paymentType", "DB");

            client.post()
                .uri(uriBuilder -> uriBuilder.path("https://test.oppwa.com/v1/checkouts")
                        .queryParams(map)
                        .build())
                .header(HttpHeaders.USER_AGENT, "Mozilla/5.0")
                .header(HttpHeaders.AUTHORIZATION, "Bearer 11111111")
                .accept(MediaType.APPLICATION_JSON)
                .contentType(MediaType.APPLICATION_FORM_URLENCODED)
                .retrieve()
                .bodyToMono(SaleResponse.class);

---

你知道为什么url链接会重复两次吗？如何解决此问题？

您正在使用网关基url构建RestClient：

WebClient.Builder builder = WebClient.builder().baseUrl(gatewayUrl);

在spring文档中，您可以阅读有关

baseUrl

的以下内容：

DefaultUriBuilderFactory用于为具有给定基本URL的每个请求准备URL，除非给定URL的URL请求是绝对的，在这种情况下，基本URL将被忽略。

在您的示例中：

// Here you are supplying a an absolute url, which means base url is ignored
client.post()
      .uri("https://test.oppwa.com/v1/checkouts?entityId=1234567&amount=92.00&currency=GBP&paymentType=DB"

而在你的另一个例子中：

client.post()
      // Here you are supplying only a path
      .uri(uriBuilder -> uriBuilder.path("https://test.oppwa.com/v1/checkouts")
                            .queryParams(map)
                            .build())

对于path的文档，它说：

附加到此生成器的路径。 给定值按原样追加，除了清除重复项外，不检查斜杠

如果您需要更改基本url，我建议您将url放在属性文件中，并在启动时加载它们。因此，根据环境（dev、test、prod）的不同，您可以使用自己的配置加载不同的概要文件，并将其设置为baseUrl。然后使用UrlBuilder在顶部附加不同的路径

---

您从哪里获得

uriBuilder

（您知道在第一个代码片段中您完全放弃了使用它的结果？）？uriBuilder是一个Java Lambda表达式。客户端是否设置了基本路径？我犯了一个错误。帖子已更新。我没有基本路径的配置。

client.post()
      // Here you are supplying only a path
      .uri(uriBuilder -> uriBuilder.path("https://test.oppwa.com/v1/checkouts")
                            .queryParams(map)
                            .build())