spring MyRestTemplateCustomizer 源码

2022-08-12
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springboot MyRestTemplateCustomizer 代码

文件路径：/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/io/restclient/resttemplate/customization/MyRestTemplateCustomizer.java

/*
 * Copyright 2012-2021 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.docs.io.restclient.resttemplate.customization;

import org.apache.http.HttpException;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.client.HttpClient;
import org.apache.http.conn.routing.HttpRoutePlanner;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.DefaultProxyRoutePlanner;
import org.apache.http.protocol.HttpContext;

import org.springframework.boot.web.client.RestTemplateCustomizer;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

public class MyRestTemplateCustomizer implements RestTemplateCustomizer {

	@Override
	public void customize(RestTemplate restTemplate) {
		HttpRoutePlanner routePlanner = new CustomRoutePlanner(new HttpHost("proxy.example.com"));
		HttpClient httpClient = HttpClientBuilder.create().setRoutePlanner(routePlanner).build();
		restTemplate.setRequestFactory(new HttpComponentsClientHttpRequestFactory(httpClient));
	}

	static class CustomRoutePlanner extends DefaultProxyRoutePlanner {

		CustomRoutePlanner(HttpHost proxy) {
			super(proxy);
		}

		@Override
		public HttpHost determineProxy(HttpHost target, HttpRequest request, HttpContext context) throws HttpException {
			if (target.getHostName().equals("192.168.0.5")) {
				return null;
			}
			return super.determineProxy(target, request, context);
		}

	}

}

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所属分类： 后端技术
本文标签： Java Spring Spring Boot
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