在用spring cloud的时候,先创建了一个parent项目,然后分别加入eureka-server模块、短信模块,运行正常。最后再加入支付模块(需整合myBatis、mySql)之后,eureka-server模块和短信模块报错:
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).
经查,因引入了myBatis的jar包:
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.1</version>
</dependency>
spring boot 会默认加载org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration这个类,而DataSourceAutoConfiguration类使用了@Configuration注解向spring注入了dataSource bean,又因为项目(eureka-server模块和短信模块)中并没有关于dataSource相关的配置信息,所以当spring创建dataSource bean时因缺少相关的信息就会报错。
解决办法:
1、在@SpringBootApplication注解上加上exclude,解除自动加载DataSourceAutoConfiguration。
@EnableEurekaServer
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
public class EurekaServerApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaServerApplication.class, args);
}
}
2、在parent项目的pom.xml文件中保存所有子模块的共有jar依赖,非共有的依赖则在各模块自身的pom.xml文件中进行申明。建议采用此方法,好处在于各模块的依赖不会相互产生干扰。
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原文:https://blog.csdn.net/u010448530/article/details/80840828