参考https://developer.work.weixin.qq.com/document/55963；升级TLS为1.2

qywx-sdk/src/main/java/com/usoftchina/qywx/sdk/util/HttpUtils.java

@@ -166,7 +166,7 @@ public class HttpUtils {
                 if (!(socket instanceof SSLSocket)) {
                     throw new RuntimeException("An instance of SSLSocket is expected");
                 }
-                ((SSLSocket) socket).setEnabledProtocols(new String[]{"TLSv1"});
+                ((SSLSocket) socket).setEnabledProtocols(new String[]{"TLSv1.2"});
                 return socket;
             }
         }