RestClient 通过拦截器实现请求加密的示例

String payloadString = ModelOptionsUtils.toJsonString(payload);
String hashedRequestPayload = sha256Hex(payloadString);
//将hashedRequestPayload封装到jsonContentHeaders中，并添加到请求头中
ResponseEntity<String> retrieve = this.restClient.post().uri("/").headers(headers -> {
    headers.addAll(jsonContentHeaders);
}).body(chatRequest).retrieve().toEntity(String.class);

ApiAuthHttpRequestInterceptor apiAuthHttpRequestInterceptor = new ApiAuthHttpRequestInterceptor();
this.restClient = RestClient.Builder.baseUrl(baseUrl)
        .defaultHeaders(jsonContentHeaders)
        .defaultStatusHandler(responseErrorHandler)
        .requestInterceptor(apiAuthHttpRequestInterceptor)
        .build();

public class ApiAuthHttpRequestInterceptor implements ClientHttpRequestInterceptor {
    @Override
    public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
        String hashedRequestPayload = sha256Hex(payloadString);
        //将hashedRequestPayload封装到jsonContentHeaders中，并添加到请求头中
        request.getHeaders().putAll(httpHeadersConsumer);
      ClientHttpResponse response = execution.execute(request, body);
      return response;
    }
}