spring boot 启动遇到报错：Failed to configure a DataSource

spring  boot 启动遇到报错，具体如下

Description:

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

Reason: Failed to determine a suitable driver class

Action:

Consider the following:
If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

出错的原因：

　　在pom.xml中引入了 mybatis-spring-boot-starter，会自动加载org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration类

　　DataSourceAutoConfiguration类使用了@Configuration注解向spring注入了DataSource bean

　　因此如果没有配置DataSource，就会报错

解决的方法：

　　修改启动类，添加 @EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})，阻止spring 自动注入DataSource

package com.abc.robin.backup;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;

@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
@SpringBootApplication
public class RobinBackupApplication {

    public static void main(String[] args) {
        SpringApplication.run(RobinBackupApplication.class, args);
    }

}