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[英]org.apache.tomcat.jdbc.pool.ConnectionPool - Unable to create initial connections of pool
[英]o.a.tomcat.jdbc.pool.ConnectionPool : Unable to create initial connections of pool. Spring Boot + MySql
我想借助MySql WorkBranch将Spring Boot应用程序与数据库连接
o.a.tomcat.jdbc.pool.ConnectionPool : Unable to create initial connections of pool.
是我的例外
pom.xml
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.27</version>
</dependency>
application.properties
spring.thymeleaf.mode=LEGACYHTML5
#toa gore mora
# ===============================
# = DATA SOURCE
# ===============================
# Set here configurations for the database connection
# Connection url for the database "netgloo_blog"
spring.datasource.url = jdbc:mysql://localhost:3306/OnlineBanking
# Username and secret
spring.datasource.username = root
spring.datasource.password =
# Keep the connection alive if idle for a long time (needed in production)
spring.datasource.tomcat.max-active=1
# ===============================
# = JPA / HIBERNATE
# ===============================
# Use spring.jpa.properties.* for Hibernate native properties (the prefix is
# stripped before adding them to the entity manager).
# Show or not log for each sql query
spring.jpa.show-sql = true
# Hibernate ddl auto (create, create-drop, update): with "update" the database
# schema will be automatically updated accordingly to java entities found in
# the project
spring.jpa.hibernate.ddl-auto = update
# Allows Hibernate to generate SQL optimized for a particular DBMS
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
在MySql Workbranch服务器中设置的图像如下: https ://i.stack.imgur.com/F3G4s.png
我得到这个错误
2018-05-13 22:04:38.234 ERROR 6176 --- [ main] o.a.tomcat.jdbc.pool.ConnectionPool : Unable to create initial connections of pool.
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_162]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_162]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_162]
at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_162]
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) ~[mysql-connector-java-5.1.27.jar:na]
有人可以帮助将Spring Boot与数据库连接谢谢吗
假设您处于开发环境中,并且安全性不是问题,则可以使用以下SQL命令创建登录名
CREATE USER 'jeffrey'@'*' IDENTIFIED BY 'password';
GRANT ALL ON * TO 'jeffrey'@'*';
也可以看看
https://dev.mysql.com/doc/refman/8.0/en/create-user.html和https://dev.mysql.com/doc/refman/8.0/en/grant.html
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