1. jdk17链接sqlserver2012 链接不上问题：

Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: “Encrypt”属性设置为“true”且 “trustServerCertificate”属性设置为“false”，但驱动程序无法使用安全套接字层 (SSL) 加密与 SQL Server 建立安全连接:错误:The server selected protocol version TLS10 is not accepted by client preferences [TLS13, TLS12]。 ClientConnectionId:80d09bbc-8725-493a-8a47-f8ff3c173152
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.terminate(SQLServerConnection.java:4026)
	at com.microsoft.sqlserver.jdbc.TDSChannel.enableSSL(IOBuffer.java:1954)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:3552)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:3172)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:3014)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:1836)
	at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:1246)
	at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)
	at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:359)
	at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201)
	at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:470)
	at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561)
	at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:100)
	at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112)
	at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:160)
	at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:118)
	at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81)
	... 92 more
Caused by: javax.net.ssl.SSLHandshakeException: The server selected protocol version TLS10 is not accepted by client preferences [TLS13, TLS12]
	at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:131)
	at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:117)
	at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:365)
	at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:321)
	at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:312)
	at java.base/sun.security.ssl.ServerHello$ServerHelloConsumer.onServerHello(ServerHello.java:981)
	at java.base/sun.security.ssl.ServerHello$ServerHelloConsumer.consume(ServerHello.java:903)
	at java.base/sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:396)
	at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:480)
	at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:458)
	at java.base/sun.security.ssl.TransportContext.dispatch(TransportContext.java:201)
	at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:172)
	at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1506)
	at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1421)
	at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:455)
	at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:426)
	at com.microsoft.sqlserver.jdbc.TDSChannel.enableSSL(IOBuffer.java:1843)
	... 107 more

2.处理：

第一步:

jdbc:sqlserver://ip:port;DatabaseName=database;trustServerCertificate=true

添加：;trustServerCertificate=true属性

第二步：

找到jdk安装目录：

C:\Program Files\Java\jdk-17\conf\security

文件：java.security

找到：

jdk.tls.disabledAlgorithms=SSLv3, TLSv1, TLSv1.1, DTLSv1.0, RC4, DES, \
    MD5withRSA, DH keySize < 1024, EC keySize < 224, 3DES_EDE_CBC, anon, NULL

替换：

jdk.tls.disabledAlgorithms=SSLv3, RC4, MD5withRSA, DH keySize < 1024, \
    EC keySize < 224, DES40_CBC, RC4_40, 3DES_EDE_CBC

第三步：

添加启动配置

java -Djdk.tls.client.protocols="TLSv1,TLSv1.1,TLSv1.2,TLSv1.3" -jar xxxx.jar