These handlers are in charge of returning the default JSON responses when you `raise` an `HTTPException` and when the request has invalid data.

You can override these exception handlers with your own.

### Override request validation exceptions { #override-request-validation-exceptions }

When a request contains invalid data, **FastAPI** internally raises a `RequestValidationError`.

from fastapi import Body, FastAPI, HTTPException, Request, Response
from fastapi.exceptions import RequestValidationError
from fastapi.routing import APIRoute


class ValidationErrorLoggingRoute(APIRoute):
    def get_route_handler(self) -> Callable:
        original_route_handler = super().get_route_handler()

        async def custom_route_handler(request: Request) -> Response:
            try:

/**
 * Interface for managing web API request processing.
 * Implementations of this interface handle specific types of web API requests
 * by matching incoming requests and processing them accordingly.
 */
public interface WebApiManager {

    /**
     * Checks if the request matches this API manager.
     * @param request The HTTP servlet request.
     * @return True if the request matches, false otherwise.
     */

    client = new OkHttpClient.Builder()
        .cache(cache)
        .build();
  }

  public void run() throws Exception {
    for (int i = 0; i < 5; i++) {
      System.out.println("    Request: " + i);

      Request request = new Request.Builder()
          .url("https://api.github.com/search/repositories?q=http")
          .build();

      OkHttpClient clientForCall;
      if (i == 2) {

  private var client = clientTestRule.newClientBuilder().build()

  @StartStop
  private val server = MockWebServer()

  val request by lazy { Request(server.url("/")) }

  @Test
  fun suspendCall() {
    runTest {
      server.enqueue(MockResponse(body = "abc"))

      val call = client.newCall(request)

      call.executeAsync().use {
        withContext(Dispatchers.IO) {
          assertThat(it.body.string()).isEqualTo("abc")

        this.memoryRegion = memoryRegion;
        this.completed = false;
    }

    /**
     * Get request ID
     *
     * @return unique request identifier
     */
    public long getRequestId() {
        return requestId;
    }

    /**
     * Get request type
     *
     * @return type of request
     */
    public RequestType getType() {
        return type;
    }

    /**

    /** Helper for managing popular search words and suggestions. */
    @Resource
    protected PopularWordHelper popularWordHelper;

    /** The HTTP servlet request object for the current request. */
    @Resource
    protected HttpServletRequest request;

    /** Flag indicating whether search logging is enabled. */
    protected boolean searchLogSupport;

            CreateContextRequest request = mock(CreateContextRequest.class);
            when(request.getName()).thenReturn(expectedName);

            byte[] actualName = request.getName();
            assertArrayEquals(expectedName, actualName);
            verify(request, times(1)).getName();
        }

        @Test

   * at most once. This is typically used when writing the request body is destructive and it is not
   * possible to recreate the request body after it has been sent.
   *
   * This method returns false unless it is overridden by a subclass.
   *
   * By default OkHttp will attempt to retransmit request bodies when the original request fails
   * due to any of:
   *

     * Builds the effective model of the specified POM.
     *
     * @param request The model building request that holds the parameters, must not be {@code null}.
     * @return The result of the model building, never {@code null}.
     * @throws ModelBuildingException If the effective model could not be built.
     */
    ModelBuildingResult build(ModelBuildingRequest request) throws ModelBuildingException;

    /**