spring ClientHttpRequestFactorySupplier 源码
springboot ClientHttpRequestFactorySupplier 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/client/ClientHttpRequestFactorySupplier.java
/*
* Copyright 2012-2019 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.boot.web.client;
import java.util.function.Consumer;
import java.util.function.Supplier;
import org.springframework.aot.hint.RuntimeHints;
import org.springframework.aot.hint.TypeHint.Builder;
import org.springframework.aot.hint.TypeReference;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.http.client.OkHttp3ClientHttpRequestFactory;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.util.ClassUtils;
/**
* A supplier for {@link ClientHttpRequestFactory} that detects the preferred candidate
* based on the available implementations on the classpath.
*
* @author Stephane Nicoll
* @author Moritz Halbritter
* @since 2.1.0
*/
public class ClientHttpRequestFactorySupplier implements Supplier<ClientHttpRequestFactory> {
private static final boolean APACHE_HTTP_CLIENT_PRESENT = ClassUtils.isPresent("org.apache.http.client.HttpClient",
null);
private static final boolean OKHTTP_CLIENT_PRESENT = ClassUtils.isPresent("okhttp3.OkHttpClient", null);
@Override
public ClientHttpRequestFactory get() {
if (APACHE_HTTP_CLIENT_PRESENT) {
return new HttpComponentsClientHttpRequestFactory();
}
if (OKHTTP_CLIENT_PRESENT) {
return new OkHttp3ClientHttpRequestFactory();
}
return new SimpleClientHttpRequestFactory();
}
static class ClientHttpRequestFactorySupplierRuntimeHints {
static void registerHints(RuntimeHints hints, ClassLoader classLoader, Consumer<Builder> callback) {
hints.reflection().registerType(HttpComponentsClientHttpRequestFactory.class, (hint) -> callback
.accept(hint.onReachableType(TypeReference.of("org.apache.http.client.HttpClient"))));
hints.reflection().registerType(OkHttp3ClientHttpRequestFactory.class,
(hint) -> callback.accept(hint.onReachableType(TypeReference.of("okhttp3.OkHttpClient"))));
hints.reflection().registerType(SimpleClientHttpRequestFactory.class, (hint) -> callback
.accept(hint.onReachableType(TypeReference.of(SimpleClientHttpRequestFactory.class))));
}
}
}
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- 本文标签： Spring Boot Java Spring
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