2021-10-29 20:02:37.017 ERROR 15376 --- [reate-421293587] com.alibaba.druid.pool.DruidDataSource : create connection SQLException, url: jdbc:mysql://192.168.159.100:3306/reggie?characterEncoding=utf-8, errorCode 0, state 08S01
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:833) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.jdbc.ConnectionImpl.
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1644) ~[druid-1.1.23.jar:1.1.23]
at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710) ~[druid-1.1.23.jar:1.1.23]
at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2774) ~[druid-1.1.23.jar:1.1.23]
Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at jdk.internal.reflect.GeneratedConstructorAccessor28.newInstance(Unknown Source) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na]
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[na:na]
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[na:na]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.protocol.a.NativeProtocol.negotiateSSLConnection(NativeProtocol.java:342) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.protocol.a.NativeAuthenticationProvider.connect(NativeAuthenticationProvider.java:167) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.protocol.a.NativeProtocol.connect(NativeProtocol.java:1350) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.NativeSession.connect(NativeSession.java:157) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:953) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:823) ~[mysql-connector-java-8.0.23.jar:8.0.23]
... 6 common frames omitted
Caused by: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
at java.base/sun.security.ssl.HandshakeContext.
at java.base/sun.security.ssl.ClientHandshakeContext.
at java.base/sun.security.ssl.TransportContext.kickstart(TransportContext.java:238) ~[na:na]
at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:434) ~[na:na]
at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:412) ~[na:na]
at com.mysql.cj.protocol.ExportControlled.performTlsHandshake(ExportControlled.java:317) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.protocol.StandardSocketFactory.performTlsHandshake(StandardSocketFactory.java:188) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.protocol.a.NativeSocketConnection.performTlsHandshake(NativeSocketConnection.java:97) ~[mysql-connector-java-8.0.23.jar:8.0.23]
at com.mysql.cj.protocol.a.NativeProtocol.negotiateSSLConnection(NativeProtocol.java:333) ~[mysql-connector-java-8.0.23.jar:8.0.23]
... 11 common frames omitted
1. 我配置了yml(加依赖),用来配置主从库
server:
port: 8080
spring:
application:
#应用的名称，可选
name: reggie_take_out
shardingsphere:
datasource:
names:
master,slave
# 主数据源
master:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://192.168.159.101:3306/reggie?characterEncoding=utf-8
username: root
password: root
# 从数据源
slave:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://192.168.159.101:3306/reggie?characterEncoding=utf-8
username: root
password: root
masterslave:
# 读写分离配置
load-balance-algorithm-type: round_robin #轮询
# 最终的数据源名称
name: dataSource
# 主库数据源名称
master-data-source-name: master
# 从库数据源名称列表，多个逗号分隔
slave-data-source-names: slave
props:
sql:
show: true #开启SQL显示，默认false
main:
allow-bean-definition-overriding: true
redis:
host: localhost
port: 6379
password: 123456
database: 0
cache:
redis:
time-to-live: 1800000 #设置缓存数据的过期时间
mybatis-plus:
configuration:
#在映射实体或者属性时，将数据库中表名和字段名中的下划线去掉，按照驼峰命名法映射
map-underscore-to-camel-case: true
log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
global-config:
db-config:
id-type: ASSIGN_ID
reggie:
path: D:imgs
2.运行启动类出现如下报错
3.导致这个报错的原因是数据库版本太高,此时在url加上useSSL=false;就解决了
4.再写一遍url地址:
url: jdbc:mysql://192.168.159.101:3306/reggie?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&useSSL=false&allowPublicKeyRetrieval=true
