SSLHandshakeException: No appropriate protocol解决办法

今启动项目，发现一个数据库连接异常，SSL相关，报错如下

Caused by: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
    at sun.security.ssl.HandshakeContext.(HandshakeContext.java:171) ~[?:1.8.0_301]
    at sun.security.ssl.ClientHandshakeContext.(ClientHandshakeContext.java:101) ~[?:1.8.0_301]
    at sun.security.ssl.TransportContext.kickstart(TransportContext.java:238) ~[?:1.8.0_301]
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:394) ~[?:1.8.0_301]
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:373) ~[?:1.8.0_301]
    at com.mysql.cj.protocol.ExportControlled.performTlsHandshake(ExportControlled.java:316) ~[mysql-connector-java-8.0.16.jar:8.0.16]
    at com.mysql.cj.protocol.StandardSocketFactory.performTlsHandshake(StandardSocketFactory.java:188) ~[mysql-connector-java-8.0.16.jar:8.0.16]
    at com.mysql.cj.protocol.a.NativeSocketConnection.performTlsHandshake(NativeSocketConnection.java:99) ~[mysql-connector-java-8.0.16.jar:8.0.16]
    at com.mysql.cj.protocol.a.NativeProtocol.negotiateSSLConnection(NativeProtocol.java:352) ~[mysql-connector-java-8.0.16.jar:8.0.16]
    at com.mysql.cj.protocol.a.NativeAuthenticationProvider.negotiateSSLConnection(NativeAuthenticationProvider.java:777) ~[mysql-connector-java-8.0.16.jar:8.0.16]
    at com.mysql.cj.protocol.a.NativeAuthenticationProvider.proceedHandshakeWithPluggableAuthentication(NativeAuthenticationProvider.java:486) ~[mysql-connector-java-8.0.16.jar:8.0.16]
    at com.mysql.cj.protocol.a.NativeAuthenticationProvider.connect(NativeAuthenticationProvider.java:202) ~[mysql-connector-java-8.0.16.jar:8.0.16]
    at com.mysql.cj.protocol.a.NativeProtocol.connect(NativeProtocol.java:1452) ~[mysql-connector-java-8.0.16.jar:8.0.16]
    at com.mysql.cj.NativeSession.connect(NativeSession.java:165) ~[mysql-connector-java-8.0.16.jar:8.0.16]
    at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:955) ~[mysql-connector-java-8.0.16.jar:8.0.16]
    at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:825) ~[mysql-connector-java-8.0.16.jar:8.0.16]
    ... 6 more
2022-05-12 12:01:00.669 resources-admin - [Druid-ConnectionPool-Create-771547920] ERROR com.alibaba.druid.pool.DruidDataSource:2552 - create connection SQLException, url: jdbc:mysql://10.2.0.3:30306/koal_audit_5.2.0?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai, errorCode 0, state 08S01
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

原因看了网上综合说的一些内容可能就是SSL通信这里用不了禁用了，对应解决办法就是直接不用SSL了。

解决办法：

datasource:的 url:配置中，添加useSSL=false

最简单用的话就直接使用上面方法即可。

当然还有别的解决办法，像是jdk中修改security 相关的内容，可以向这个方向思考。