SpringBoot项目报错：Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

原因是加入了mybaties依赖而没有指定数据库url属性，

解决方式：

1、去除mybaties依赖 即去除：

<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.0.0</version>
</dependency>

2、加入数据库相关的配置，即加上

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/read_data?useUnicode=true&characterEncoding=UTF-8&useSSL=false
    username: root
    password: 123456
    driver-class-name: com.mysql.jdbc.Driver

3、在启动类的@EnableAutoConfiguration或@SpringBootApplication中添加exclude = {DataSourceAutoConfiguration.class}，排除此类的autoconfig。即

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)