httpClient发送https请求，忽略证书详解（亲测有效）

问题

 在项目上线前期。第三方接口的生产地址改用为 ip地址加端口号的形式（测试环境使用的是域名进行访问），导致项目上线后接口不能访问。
 报错：doesn't match any of the subject alternative names: [...]

原因

解决

方法1：通过java代码实现忽略证书

我之前用的是httpclient发送post请求，代码如下：

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.zeekrlife.udepsvctasks.entity.push.Result;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import java.nio.charset.Charset;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;

@Slf4j
public class HttpClientUtil {

    public static JSONObject doPost(String url, String data) {
        //创建post请求对象
        HttpPost httpPost = new HttpPost(url);
        JSONObject jsonObject = new JSONObject();
        //创建CloseableHttpClient对象（忽略证书的重点）
        CloseableHttpClient client = null;
        try {
            SSLConnectionSocketFactory scsf = new SSLConnectionSocketFactory(
                    SSLContexts.custom().loadTrustMaterial(null, new TrustSelfSignedStrategy()).build(),
                    NoopHostnameVerifier.INSTANCE);
            client = HttpClients.custom().setSSLSocketFactory(scsf).build();

        } catch (KeyManagementException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (KeyStoreException e) {
            e.printStackTrace();
        }
        try {
            //设置请求头
            httpPost.setEntity(new StringEntity(data, Charset.forName("utf-8")));
            //使用CloseableHttpClient发送请求
            CloseableHttpResponse response = client.execute(httpPost);
            //获取返回code
            int statusCode = response.getStatusLine().getStatusCode();
            //根据返回code进行处理
            if (statusCode == 200) {
                log.info("请求：" + statusCode);
                //获取响应结果
                HttpEntity entity = response.getEntity();
                jsonObject = JSON.parseObject(EntityUtils.toString(entity, "UTF-8"));
            } else {
                HttpEntity entity = response.getEntity();
                jsonObject = JSON.parseObject(EntityUtils.toString(entity, "UTF-8"));
                Result result = JSON.toJavaObject(jsonObject, Result.class);
                log.info("请求" + statusCode);
                log.info("message" + result.getMessage());
                return null;
            }
        } catch (IOException e) {
            log.info("请求失败");
            log.info(e.getLocalizedMessage());
            e.printStackTrace();
        }
        return jsonObject;
    }
}

总结：当然应该还有很多其他的办法，我也在探索中。