HttpClient 之 4.x.x版本以上的发送Https请求

https请求比http更安全 是在http的基础上加了SSL数据加密协议。

 

http的连接很简单，是无状态的；HTTPS协议是由SSL+HTTP协议构建的可进行加密传输、身份认证的网络协议，比http协议安全。

 

因为之前写的是版本比较久的https请求方式，下面介绍看到较新的方式：

import java.net.URI;import java.security.cert.CertificateException;import java.security.cert.X509Certificate;import java.util.Map.Entry; import javax.net.ssl.SSLContext; import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.client.HttpClient;import org.apache.http.client.config.RequestConfig;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.client.utils.URIBuilder;import org.apache.http.conn.ssl.SSLConnectionSocketFactory;import org.apache.http.conn.ssl.SSLContextBuilder;import org.apache.http.conn.ssl.TrustStrategy;import org.apache.http.entity.mime.MultipartEntityBuilder;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.util.EntityUtils;public class HttpClientUtil {    public static final Logger logger = LoggerFactory.getLogger(HttpClientUtil.class);    public static String doPost(String url, String json)  throws Exception {        SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {            @Override            public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {                return true;            }        }).build();        SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext);        HttpClient httpClient = HttpClients.custom().setSSLSocketFactory(sslsf).build();        HttpPost httppost = new HttpPost(url);        MultipartEntityBuilder mEntityBuilder = MultipartEntityBuilder.create();        //params        //mEntityBuilder.addTextBody("userName", "1234");        httppost.setEntity(mEntityBuilder.build());        //httppost.addHeader("Content-Type", "Application/JSON");        //其他方法添加参数...        /*StringEntity entity = new StringEntity(json, Charsets.UTF_8);//解决中文乱码问题        entity.setContentEncoding("UTF-8");        entity.setContentType("application/json");        httppost.setEntity(entity);*/        int timeOut = 1000*50;        // set Timeout        RequestConfig requestConfig = RequestConfig.custom().setConnectionRequestTimeout(timeOut)                .setConnectTimeout(timeOut).setSocketTimeout(timeOut).build();        httppost.setConfig(requestConfig);        // get responce        HttpResponse responce = httpClient.execute(httppost);        // get http status code        int status = responce.getStatusLine().getStatusCode();        System.out.println("request code:" + status);        String resultString = null;        if (status == HttpStatus.SC_OK) {            // get result data            HttpEntity entity = responce.getEntity();            resultString = EntityUtils.toString(entity, Charsets.UTF_8);        }        return resultString;    }}

 

主要看的是这个：

http://www.jsjtt.com/java/JavaWebkaifa/117.html

另外的还有对其原理介绍深入的：

http://www.aneasystone.com/archives/2016/04/java-and-https.html

其他的：

http://blog.csdn.net/shenyunsese/article/details/41075579