# 自定义响应 - HTML，流，文件和其他

**FastAPI** 默认会使用 `JSONResponse` 返回响应。

你可以通过直接返回 `Response` 来重载它，参见 [直接返回响应](response-directly.md){.internal-link target=_blank}。

但如果你直接返回 `Response`，返回数据不会自动转换，也不会自动生成文档（例如，在 HTTP 头 `Content-Type` 中包含特定的「媒体类型」作为生成的 OpenAPI 的一部分）。

你还可以在 *路径操作装饰器* 中声明你想用的 `Response`。

你从 *路径操作函数* 中返回的内容将被放在该 `Response` 中。

            
            // Send request header via RDMA send
            sendWithRdmaSendReceive(request);
            
            // Wait for server to write data directly to our buffer via RDMA
            // No additional receive needed - data written directly to memory
            
            // Create response with data from RDMA buffer
            Smb2ReadResponse response = new Smb2ReadResponse();

            }
        };

        // Simulate the shutdown hook being run
        spyContext.run();

        assertTrue(spyContext.isCloseCalled()); // Verify close() was called
        // We can't directly assert on log.warn, but we've covered the path
    }

import jcifs.smb1.util.Base64;

/**
 * This class is used internally by {@code NtlmHttpFilter},
 * {@code NtlmServlet}, and {@code NetworkExplorer} to negiotiate password
 * hashes via NTLM SSP with MSIE. It might also be used directly by servlet
 * containers to incorporate similar functionality.
 * <p>
 * How NTLMSSP is used in conjunction with HTTP and MSIE clients is
 * described in an <A HREF="http://www.innovation.ch/java/ntlm.html">NTLM

import java.util.Collection;
import org.junit.Ignore;

/**
 * Tests for {@code Multimap.asMap().get(Object)}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")

}

// ObjectVersion object version key/versionId
type ObjectVersion struct {
	ObjectName string
	VersionID  string `json:"VersionId,omitempty"`
}

// ReqInfo stores the request info.
// Reading/writing directly to struct requires appropriate R/W lock.
type ReqInfo struct {
	RemoteHost   string           // Client Host/IP
	Host         string           // Node Host/IP
	UserAgent    string           // User Agent

 *  * **HTTP proxy:** a proxy server may be explicitly configured for the client. Otherwise, the
 *    [proxy selector][java.net.ProxySelector] is used. It may return multiple proxies to attempt.
 *  * **IP address:** whether connecting directly to an origin server or a proxy, opening a socket
 *    requires an IP address. The DNS server may return multiple IP addresses to attempt.
 *
 * Each route is a specific selection of these options.
 */
class Route(

import org.jspecify.annotations.Nullable;
import org.junit.Ignore;

/**
 * Tester for {@code Multimap.equals}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@NullMarked

import java.util.Collection;
import org.junit.Ignore;

/**
 * Tests for {@link Multimap#removeAll(Object)}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")

Por padrão, o **FastAPI** irá retornar respostas utilizando `JSONResponse`.

Mas você pode sobrescrever esse comportamento utilizando `Response` diretamente, como visto em [Retornando uma Resposta Diretamente](response-directly.md){.internal-link target=_blank}.