SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropri

【Phenomena】

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failureThe last packet successfully received from the server was 1 milliseconds ago. The last packet sent successfully to the server was 1 milliseconds ago.at sun.reflect.GeneratedConstructorAccessor50.newInstance(Unknown Source)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)at java.lang.reflect.Constructor.newInstance(Constructor.java:423)at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:990)at com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:201)at com.mysql.jdbc.MysqlIO.negotiateSSLConnection(MysqlIO.java:4912)at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1663)at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1224)at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2190)at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2221)at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2016)at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:776)at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47)at sun.reflect.GeneratedConstructorAccessor34.newInstance(Unknown Source)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)at java.lang.reflect.Constructor.newInstance(Constructor.java:423)at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:386)at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330)at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1644)at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2774)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)at sun.security.ssl.ClientHandshakeContext.(ClientHandshakeContext.java:106)at sun.security.ssl.TransportContext.kickstart(TransportContext.java:238)at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:410)at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:389)at com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:186)... 17 common frames omitted

【Solution】

Remove SSLv3, TLSv1, TLSv1.1, and then start the project. The specific operations are as follows:

cd /usr/java/jdk1.8.0_341-amd64/jre/lib/security
vi java.security

jdk.tls.disabledAlgorithms=SSLv3, TLSv1, TLSv1.1, RC4, DES, MD5withRSA, \
DH keySize < 1024, EC keySize< 224, 3DES_EDE_CBC, anon, NULL, \
include jdk.disabled.namedCurves
Modified to:
jdk.tls.disabledAlgorithms=RC4, DES, MD5withRSA, \
DH keySize < 1024, ECkeySize < 224, 3DES_EDE_CBC, anon, NULL, \
include jdk.disabled.namedCurves