# Abhängigkeiten { #dependencies }

**FastAPI** hat ein sehr mächtiges, aber intuitives **<abbr title="auch bekannt als: Komponenten, Ressourcen, Provider, Services, Injectables">Dependency Injection</abbr>** System.

Es ist so konzipiert, sehr einfach zu verwenden zu sein und es jedem Entwickler sehr leicht zu machen, andere Komponenten mit **FastAPI** zu integrieren.

## Was ist „Dependency Injection“ { #what-is-dependency-injection }

```

/// note | Technical Details

You could also use `from starlette.requests import Request` and `from starlette.responses import JSONResponse`.

**FastAPI** provides the same `starlette.responses` as `fastapi.responses` just as a convenience for you, the developer. But most of the available responses come directly from Starlette. The same with `Request`.

///

            </ul>
          </description>
          <type>String</type>
        </field>
        <field>
          <name>provides</name>
          <version>1.0.0/1.0.99</version> <!-- fake upperbound, it's inclusive -->
          <type>DOM</type>
          <description>

import org.apache.maven.api.Toolchain;
import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;

/**
 * Service interface for managing Maven toolchains, which provide abstraction for different
 * build tools and environments.
 *
 * <p>A toolchain represents a specific build tool configuration (e.g., JDK, compiler) that can be

 * be no logging set up even. Implementations may be "accumulating", in which case {@link #drain()}  method should
 * be used.
 * <p>
 * This interface provides methods for logging messages at different severity levels
 * and supports logging with or without associated exceptions.
 *
 * @since 4.0.0
 */
@Experimental
public interface Logger {

    /**

///

/// note | Technical Details

You could also use `from starlette.requests import Request`.

**FastAPI** provides it as a convenience for you, the developer. But it comes directly from Starlette.

///

### Before and after the `response` { #before-and-after-the-response }

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package gradlebuild.buildutils.tasks

import org.gradle.api.file.RegularFileProperty
import org.gradle.api.provider.Property
import org.gradle.api.tasks.Internal
import org.gradle.api.tasks.TaskAction
import org.gradle.api.tasks.UntrackedTask
import org.gradle.util.GradleVersion
import org.gradle.util.internal.VersionNumber

        int buildNumber = 1;
        // this generates timestamped versions like maven-resolver-provider:
        // https://github.com/apache/maven/blob/03df5f7c639db744a3597c7175c92c8e2a27767b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RemoteSnapshotMetadata.java#L79
        String version = artifact.getVersion();

     */
    @Nonnull
    List<String> getInactiveProfileIds();

    /**
     * Provides a map of system properties.
     */
    @Nonnull
    Map<String, String> getSystemProperties();

    /**
     * Provides a map of user properties.
     * User properties
     */
    @Nonnull
    Map<String, String> getUserProperties();

    @Nonnull

import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;

import org.apache.maven.artifact.repository.metadata.Metadata;
import org.apache.maven.metadata.v4.MetadataStaxWriter;

/**
 * Provide public methods from {@link MetadataStaxWriter}
 *
 * @deprecated Maven 3 compatability - please use {@link MetadataStaxWriter}
 */
@Deprecated
public class MetadataXpp3Writer {