springCloud项目启动报如下错误 ：

由于项目中引用了mybatis项目的数据配置，会去加载数据库信息，也可能是依赖项目中有关于mybaits相关的配置

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APPLICATION FAILED TO START
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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).

解决方式：

若此项目不需要加载数据库配置

1.可以在pom.xml中使用 <exclusions> 排除依赖

<dependency>
            <groupId>com.atguigu.gulimall</groupId>
            <artifactId>gulimall-common</artifactId>
            <version>0.0.1-SNAPSHOT</version>
            <exclusions>
                <exclusion>
                    <artifactId>mybatis</artifactId>
                    <groupId>org.mybatis</groupId>
                </exclusion>
            </exclusions>
        </dependency>

2. 也可以使用注解

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})

@EnableDiscoveryClient
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
public class GulimallGatewayApplication {

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

}