错误信息“com.mysql.cj.exceptions.WrongArgument

Question

我正在使用 MySQL 数据库开发一个 Spring Boot 项目。如果我运行我的代码，一个WrongArgumentException说法是databaseURL cannot be null.application.properties:spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driverspring.datasource.jdbc-url=jdbc:mysql//localhost:3306/reserving?autoReconnect=true&useSSL=falsespring.datasource.username=rootspring.datasource.password=****##Mapper Config##mybatis.type-aliases-package=com.springboot.reservingmybatis.mapper-locations=mapper/**/*.xmlspring.devtools.livereload.enabled =truespring.freemarker.cache=false错误信息：java.sql.SQLNonTransientConnectionException: Cannot load connection class because of underlying exception: com.mysql.cj.exceptions.WrongArgumentException: The database URL cannot be null.

Answer 1

将属性更改spring.datasource.jdbc-url为

spring.datasource.url=jdbc:mysql//localhost:3306/reserving?autoReconnect=true&useSSL=false

Answer 2

应用程序属性spring.datasource.jdbc-url中没有命名的属性

改变

spring.datasource.jdbc-url

到

spring.datasource.url

spring.datasource.platform=mysql

spring.datasource.url=jdbc:mysql//localhost:3306/reserving?autoReconnect=true&useSSL=false 

spring.datasource.username=root

spring.datasource.password=****

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect