消息推送服务端获取AccessToken失败

已引入mykeystorebj.jks文件，但是在获取AccessToken时报错，疑似是安全证书协议问题，求助如何解决，谢谢了！ 代码在该行报错： AccessToken access_token = oauth2Client.getAccessToken("client_credentials", appId, appKey); 报错信息如下： log4j:WARN No such property [maxBackupIndex] in org.apache.log4j.DailyRollingFileAppender. nsp.support.common.NSPException: 2 Service unavailable. at nsp.support.common.AbsNSPClient.request(AbsNSPClient.java:244) at nsp.support.common.AbsNSPClient.request(AbsNSPClient.java:144) at nsp.OAuth2Client.getAccessToken(OAuth2Client.java:50) at com.bd.oldman.utils.HwPush.main(HwPush.java:38) Caused by: javax.net.ssl.SSLHandshakeException: Server chose TLSv1.2, but that protocol version is not enabled or not supported by the client. at sun.security.ssl.ClientHandshaker.serverHello(Unknown Source) at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source) at sun.security.ssl.Handshaker.processLoop(Unknown Source) at sun.security.ssl.Handshaker.process_record(Unknown Source) at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source) at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:275) at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:254) at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:117) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:314) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:363) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:219) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:186) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at nsp.support.common.AbsNSPClient.request(AbsNSPClient.java:218) ... 3 more