问题描述：
springboot版本 2.1.1
pom.xml配置
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
</dependencies>
application.properties
spring.datasource.hikari.jdbc-url=jdbc:mysql://127.0.0.1:3306/bootdb?serverTimezone=GMT%2B8&useUnicode=true&&characterEncoding=UTF-8
spring.datasource.hikari.username=root
spring.datasource.hikari.password=123456
spring.datasource.hikari.driver-class-name=com.mysql.jdbc.Driver在配置数据连接的时候报如下错误：
> Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could
这是因为引入的spring-boot-starter-jdbc但是没有配置spring.datasource.url等信息报错的。（在我的application.properties中采用的hikari作为数据库连接）
解决办法：
第一种：
将配置信息改为：
#spring.datasource.url=jdbc:mysql://127.0.0.1:3306/bootdb?serverTimezone=GMT%2B8&useUnicode=true&&characterEncoding=UTF-8
#spring.datasource.type=com.zaxxer.hikari.HikariDataSource
#spring.datasource.username=root
#spring.datasource.password=123456
第二种：(去掉DataSourceAutoConfiguration的自动配置)
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
public class NewCodingStandardsUserApplication {
public static void main(String[] args) {
SpringApplication.run(NewCodingStandardsUserApplication.class, args);
}
}
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