使用RestTemplate发送https请求-忽略ssl证书

RestTemplate调用https服务的时候，由于服务方的ssl证书并非正式证书，不被jdk接受，故会报类似：“No subject alternative names matching IP address xxxxxx found”的错误。网上找了一下，处理也比较简单，基本上是配置下：HttpRequestFactory。但找到的内容很多都是需要注入bean，通过@Config等方式配置，这样的话，不是很便利。

以下代码，通过直接调用main函数，处理了RestTemplate，使其忽略SSL证书。

import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.ssl.TrustStrategy;
import org.springframework.http.HttpHeaders;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

import javax.net.ssl.SSLContext;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;

public class TestNoSSLRest {

    static String URL = "https://192.168.88.70:8443/oauth/oauth2/token?grant_type=authorization_code&code=iDCQAU";

    public static void main(String[] args) throws NoSuchAlgorithmException, KeyStoreException, KeyManagementException {
        RestTemplate restTemplate = new RestTemplate(generateHttpRequestFactory());
        String responseStr = restTemplate.postForObject(URL, initHttpHeaders(), String.class);
        System.out.println(responseStr);
    }

    private static HttpHeaders initHttpHeaders() {
        HttpHeaders headers = new HttpHeaders();
        headers.add("Authorization", "Basic Soiuawe12asildfSEjasdfewe22");
        return headers;
    }

    private static HttpComponentsClientHttpRequestFactory generateHttpRequestFactory() throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException {
        TrustStrategy acceptingTrustStrategy = (x509Certificates, authType) -> true;
        SSLContext sslContext = SSLContexts.custom().loadTrustMaterial(null, acceptingTrustStrategy).build();
        SSLConnectionSocketFactory connectionSocketFactory = new SSLConnectionSocketFactory(sslContext, new NoopHostnameVerifier());
        HttpClientBuilder httpClientBuilder = HttpClients.custom();
        httpClientBuilder.setSSLSocketFactory(connectionSocketFactory);
        CloseableHttpClient httpClient = httpClientBuilder.build();
        HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory();
        factory.setHttpClient(httpClient);
        return factory;
    }

}

其中，该class依赖的jar包为：

		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpclient</artifactId>
			<version>4.5.10</version>
		</dependency>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpcore</artifactId>
			<version>4.4.15</version>
		</dependency>