HttpURLConnection ssl证书校验问题（java.security.cert.CertificateException）

HttpURLConnection校验问题
在请求的时候遇到报错：
java.security.cert.CertificateException: No subject alternative names present
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1946)
**
对应代码以及报错：

0x01 HttpURLConnection ssl报错解决办法

**
这种报错是校验了服务端证书，如果本地证书库没有信任网站证书，这种证书一般是自己生成的或者不是权威机构颁发的证书
解决办法：在请求之前调用ignoreSsl()方法

/* */
/* */ import java.security.cert.X509Certificate;
/* */ import javax.net.ssl.SSLContext;
/* */
/* */ public class SslUtils/* */ {
    /* */   private static void trustAllHttpsCertificates() throws Exception/* */   {
    /* 10 */     javax.net.ssl.TrustManager[] trustAllCerts = new javax.net.ssl.TrustManager[1];/* 11 */     javax.net.ssl.TrustManager tm = new miTM();/* 12 */     trustAllCerts[0] = tm;/* 13 */     SSLContext sc = SSLContext.getInstance("SSL");/* 14 */     sc.init(null, trustAllCerts, null);/* 15 */     javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());/* */   }/* *//* */   static class miTM implements javax.net.ssl.TrustManager, javax.net.ssl.X509TrustManager {
    /* */     public X509Certificate[] getAcceptedIssuers() {
    /* 20 */       return null;/* */     }/* *//* */     public boolean isServerTrusted(X509Certificate[] certs) {
    /* 24 */       return true;/* */     }/* *//* */     public boolean isClientTrusted(X509Certificate[] certs) {
    /* 28 */       return true;/* */     }/* *//* *//* *//* */     public void checkServerTrusted(X509Certificate[] certs, String authType)/* */       throws java.security.cert.CertificateException/* */     {
    }/* *//* *//* */     public void checkClientTrusted(X509Certificate[] certs, String authType)/* */       throws java.security.cert.CertificateException/* */     {
    }/* */   }/* *//* *//* */   public static void ignoreSsl()/* */     throws Exception/* */   {
    /* 47 */     javax.net.ssl.HostnameVerifier hv = new javax.net.ssl.HostnameVerifier() {
    /* */       public boolean verify(String urlHostName, javax.net.ssl.SSLSession session) {
    /* 49 */         return true;/* */       }/* 51 */     };/* 52 */     trustAllHttpsCertificates();/* 53 */     javax.net.ssl.HttpsURLConnection.setDefaultHostnameVerifier(hv);/* */   }/* */ }

解决方案：

    public static void main(String[] args) throws Exception {
    String result="null";
// ignoreSsl();URL url = new URL ("https://xx.xx.xx.xx/");HttpURLConnection connection = (HttpURLConnection) url.openConnection();connection.setRequestMethod("GET");
// connection.connect();//得到响应码int responseCode = connection.getResponseCode();if (responseCode == HttpURLConnection.HTTP_OK) {
    StringBuilder sb = new StringBuilder();//得到响应流InputStream is = connection.getInputStream();BufferedReader reader = new BufferedReader(new InputStreamReader (is, "utf-8"));String line = "";while ((line = reader.readLine()) != null) {
    sb.append(line).append("\n");}System.out.println (sb);is.close();connection.disconnect();}
}