因此，有些第三方 ASGI 中间件的文档推荐以如下方式使用中间件：

```Python
from unicorn import UnicornMiddleware

app = SomeASGIApp()

new_app = UnicornMiddleware(app, some_config="rainbow")
```

但 FastAPI（实际上是 Starlette）提供了一种更简单的方式，能让内部中间件在处理服务器错误的同时，还能让自定义异常处理器正常运作。

为此，要使用 `app.add_middleware()` （与 CORS 中的示例一样）。

```Python
from fastapi import FastAPI
from unicorn import UnicornMiddleware

app = FastAPI()

			log.Errorf("Failed to start up UDS Log Server: %v", err)
			return
		}

		// Creates a basic health endpoint server that reports health status
		// based on atomic flag, as set by installer
		// TODO nodeagent watch server should affect this too, and drop atomic flag
		installDaemonReady, watchServerReady := nodeagent.StartHealthServer()

import static java.util.Collections.sort;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.AbstractMapTester;
import com.google.common.collect.testing.Helpers;
import com.google.common.collect.testing.features.CollectionSize;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import java.util.Map.Entry;

import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_BYTE_MAX
import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_LONG
import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_SHORT
import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_SHORT_MAX
import okhttp3.internal.ws.WebSocketProtocol.toggleMask
import okhttp3.internal.ws.WebSocketProtocol.validateCloseCode
import okio.Buffer
import okio.BufferedSink
import okio.ByteString

import com.github.javaparser.ast.body.FieldDeclaration
import com.github.javaparser.ast.body.MethodDeclaration
import com.github.javaparser.ast.nodeTypes.NodeWithSimpleName
import com.github.javaparser.ast.visitor.GenericVisitorAdapter
import gradlebuild.binarycompatibility.jApiClass
import gradlebuild.binarycompatibility.simpleName
import japicmp.model.JApiClass
import japicmp.model.JApiCompatibility
import japicmp.model.JApiConstructor

 */
package org.codelibs.fess.app.web.admin.searchlist;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Consumer;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.net.URLUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.annotation.Secured;

package org.codelibs.fess.app.web.admin.webauth;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.Constants;
import org.codelibs.fess.annotation.Secured;
import org.codelibs.fess.app.pager.WebAuthPager;

import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.ja.JapaneseAnalyzer;
import org.apache.lucene.analysis.ja.JapanesePartOfSpeechStopFilter;
import org.opensearch.common.settings.Settings;
import org.opensearch.env.Environment;
import org.opensearch.index.IndexSettings;

import java.lang.Thread.State;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.CyclicBarrier;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
@file:Suppress("ktlint:standard:filename")

package okhttp3.internal

import java.text.Normalizer
import java.text.Normalizer.Form.NFC