HttpClient 使用证书和跳过证书

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.KeyStore;
import java.security.SecureRandom;
import java.util.Arrays;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpPost;
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.util.EntityUtils;

public class ClientSSLPost {

    public static void main(String[] args) {
        CloseableHttpClient httpclient = null;
        try {
            HttpPost httpPost = new HttpPost("https://127.0.0.1:8080/hello?orderid=111");
            InputStream ca = new FileInputStream(new File("E:/temp/key/client.cer"));// 客户端证书
            // 证书的别名，即:key。 注:cAalias只需要保证唯一即可，不过推荐使用生成keystore时使用的别名。
            String cAalias = System.currentTimeMillis()+""+new SecureRandom().nextInt(1000);

            KeyStore keyStore = ClientSSLTest.getKeyStore(ca, cAalias);
            TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
            trustManagerFactory.init(keyStore);
            TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
            if (trustManagers.length != 1|| !(trustManagers[0] instanceof X509TrustManager)) {
                throw new IllegalStateException("Unexpected default trust managers:"+ Arrays.toString(trustManagers));
            }
            X509TrustManager x509TrustManager = (X509TrustManager) trustManagers[0];
            // 这里传TLS或SSL其实都可以的
            SSLContext sslContext = SSLContext.getInstance("TLS");
            sslContext.init(null, new TrustManager[] { x509TrustManager },new SecureRandom());
            //有时因为证书的域名和实现不一样会报错,解决方法 new SSLConnectionSocketFactory(sslContext,NoopHostnameVerifier.INSTANCE);
            SSLConnectionSocketFactory sslSocketFactory = new SSLConnectionSocketFactory(sslContext);

            httpclient = HttpClientBuilder.create().setSSLSocketFactory(sslSocketFactory).build();
            ResponseHandler<String> responseHandler = new ResponseHandler<String>() {
                public String handleResponse(final HttpResponse response)throws ClientProtocolException, IOException {
                    int status = response.getStatusLine().getStatusCode();
                    if (status >=200  && status < 300) {
                        HttpEntity entity = response.getEntity();
                        return entity != null ? EntityUtils.toString(entity): null;
                    } else {
                        throw new ClientProtocolException("Unexpected response status: " + status);
                    }
                }
            };
            String responseBody = httpclient.execute(httpPost, responseHandler);
            System.out.println(responseBody);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

跳过证书

import java.io.IOException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.util.EntityUtils;

public class ClientNoSSLPostTest {

    public static void main(String[] args) {
        HttpPost httpPost = new HttpPost("https://127.0.0.1:8080/hello?orderid=111");
        // 请求头
        httpPost.addHeader("Accept", "application/json");
        httpPost.addHeader("Connection", "keep-alive");
        httpPost.addHeader("Content-Type", "application/json");

        RequestConfig config = RequestConfig.custom().setConnectTimeout(100).setSocketTimeout(80).build();

        // 这部分代码是重点
        SSLContext sslContext = getSSLContext();
        Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder
                .<ConnectionSocketFactory> create()
                .register("http", PlainConnectionSocketFactory.INSTANCE)
                .register("https", new SSLConnectionSocketFactory(sslContext))
                .build();
        PoolingHttpClientConnectionManager mananger = new PoolingHttpClientConnectionManager(
                socketFactoryRegistry);
        mananger.setMaxTotal(100);
        mananger.setDefaultMaxPerRoute(20);

        CloseableHttpClient client = HttpClients.custom()
                .setDefaultRequestConfig(config).setConnectionManager(mananger).build();

        try {
            ResponseHandler<String> responseHandler = new ResponseHandler<String>() {
                public String handleResponse(final HttpResponse response)
                        throws ClientProtocolException, IOException {
                    int status = response.getStatusLine().getStatusCode();
                    if (status >= 200 && status < 300) {
                        HttpEntity entity = response.getEntity();
                        return entity != null ? EntityUtils.toString(entity): null;
                    } else {
                        HttpEntity entity = response.getEntity();
                        System.out.println(EntityUtils.toString(entity));
                        throw new ClientProtocolException("Unexpected response status: " + status);
                    }
                }
            };
            String responseBody = client.execute(httpPost, responseHandler);
            System.out.println(responseBody);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static SSLContext getSSLContext() {
        try {
            // 这里可以填两种值 TLS和LLS , 具体差别可以自行搜索
            SSLContext sc = SSLContext.getInstance("TLS");
            // 构建新对象
            X509TrustManager manager = new X509TrustManager() {
                @Override
                public void checkClientTrusted(
                        X509Certificate[] x509Certificates, String s)throws CertificateException {
                }
                @Override
                public void checkServerTrusted(
                        X509Certificate[] x509Certificates, String s)throws CertificateException {
                }
                // 这里返回Null
                @Override
                public X509Certificate[] getAcceptedIssuers() {
                    return null;
                }
            };
            sc.init(null, new TrustManager[] { manager }, null);
            return sc;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}

HttpClient 使用证书和跳过证书

原文：https://blog.51cto.com/14602923/2467442