依賴

		<dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.3</version></dependency>

code

package com.hexin.cbas.test;import org.apache.commons.net.util.TrustManagerUtils;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.KeyStore;public class Https2Test {private final static String PFX_PATH = "D:\\person_client.p12";private final static String PFX_PWD = "pwd"; //客戶端證書密碼及密鑰庫密碼public static String sslRequestGet(String url) throws Exception {KeyStore keyStore = KeyStore.getInstance("PKCS12");try (InputStream stream = Files.newInputStream(Paths.get(PFX_PATH))){// 這里就指的是KeyStore庫的密碼keyStore.load(stream, PFX_PWD.toCharArray());}KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());keyManagerFactory.init(keyStore, PFX_PWD.toCharArray());SSLContext sslContext = SSLContext.getInstance("TLS");TrustManager[] trustManagers = new TrustManager[] {TrustManagerUtils.getAcceptAllTrustManager()};sslContext.init(keyManagerFactory.getKeyManagers(), trustManagers, null);HttpGet httpget = new HttpGet(url);try (CloseableHttpClient httpclient = HttpClients.custom().setSSLContext(sslContext).setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE).build();CloseableHttpResponse response = httpclient.execute(httpget)){// 返回結果return EntityUtils.toString(response.getEntity(), "UTF-8");}}public static void main(String[] args) throws Exception {//url使用的是域名是需要設置,否則會報handshake alert:  unrecognized_name錯誤System.setProperty("jsse.enableSNIExtension", "false");System.out.println(sslRequestGet("https://xxxxx.com/user/get"));}
}