*/
@Named
@Singleton
@Deprecated
public class DefaultWagonManager extends org.apache.maven.repository.legacy.DefaultWagonManager
        implements WagonManager {

    // NOTE: This must use a different field name than in the super class or IoC has no chance to inject the loggers
    @Inject
    private Logger log;

    @Inject
    private LegacySupport legacySupport;

    @Inject

第一个步骤是安装 FastAPI。

为了使用本教程，你可能需要安装所有的可选依赖及对应功能：

<div class="termy">

```console
$ pip install "fastapi[all]"

---> 100%
```

</div>

......以上安装还包括了 `uvicorn`，你可以将其用作运行代码的服务器。

/// note

你也可以分开来安装。

假如你想将应用程序部署到生产环境，你可能要执行以下操作：

```
pip install fastapi
```

并且安装`uvicorn`来作为服务器：

```
pip install "uvicorn[standard]"
```

然后对你想使用的每个可选依赖项也执行相同的操作。

///

            "loc": [
                "path",
                "item_id"
            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]
}

```

被替换为了以下文本格式的错误信息：

```
1 validation error
path -> item_id
  value is not a valid integer (type=type_error.integer)

```

### `RequestValidationError` vs `ValidationError`

            "loc": [
                "path",
                "item_id"
            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]
}
```

👆 🔜 🤚 ✍ ⏬, ⏮️:

```
1 validation error
path -> item_id
  value is not a valid integer (type=type_error.integer)
```

#### `RequestValidationError` 🆚 `ValidationError`

/// warning

 *
 * <p>The state-changing methods are not idempotent; it is an error to start or stop a stopwatch
 * that is already in the desired state.
 *
 * <p>When testing code that uses this class, use {@link #createUnstarted(Ticker)} or {@link
 * #createStarted(Ticker)} to supply a fake or mock ticker. This allows you to simulate any valid
 * behavior of the stopwatch.
 *
 * <p><b>Note:</b> This class is not thread-safe.
 *

      <fields>
        <field>
          <name>defaultGoal</name>
          <version>3.0.0+</version>
          <description>The default goal (or phase in Maven 2) to execute when none is specified for
            the project. Note that in case of a build with subprojects, only the default goal of the top-level
            project is relevant, i.e. the default goals of subprojects are ignored. Since Maven 3,

 * of {@link java.util.Formatter} specifiers. However, note that if the number of arguments does not
 * match the number of occurrences of {@code "%s"} in the format string, {@code Verify} will still
 * behave as expected, and will still include all argument values in the error message; the message
 * will simply not be formatted exactly as intended.
 *

    return new PriorityBlockingQueue<>();
  }

  /**
   * Creates a {@code PriorityBlockingQueue} containing the given elements.
   *
   * <p><b>Note:</b> If the specified iterable is a {@code SortedSet} or a {@code PriorityQueue},
   * this priority queue will be ordered according to the same ordering.
   *

            this.buildNumber = Integer.valueOf((String) bn);
        } else {
            this.buildNumber = null;
        }

        snapshots = new LinkedHashMap<>();

        /*
         * NOTE: This should be considered a quirk to support interop with Maven's legacy ArtifactDeployer which
         * processes one artifact at a time and hence cannot associate the artifacts from the same project to use the

                request.addMetadata(new MetadataBridge(metadata));
            }
        }

        RemoteRepository remoteRepo = RepositoryUtils.toRepo(deploymentRepository);
        /*
         * NOTE: This provides backward-compat with maven-deploy-plugin:2.4 which bypasses the repository factory when
         * using an alternative deployment location.
         */