---

Spring Boot报错

Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled.

---

一、情况一

报错

Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled.
2022-07-24 17:54:00.774 ERROR 12512 — [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter :

/***************************
APPLICATION FAILED TO START
/***************************

Description:

Field carMapper in com.sgz.service.CarServiceImpl required a bean of type ‘com.sgz.dao.CarMapper’ that could not be found.

The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)

Action:

Consider defining a bean of type ‘com.sgz.dao.CarMapper’ in your configuration.

截图

解决

在启动类上加上注解 @MapperScan(“com.sgz.dao”)

@SpringBootApplication
@MapperScan("com.sgz.dao")	// 在启动类中加上这个注解即可
public class RunApp {
    public static void main(String[] args) {
        SpringApplication.run(RunApp.class);
    }
}

---

二、情况二

报错

Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled.
2022-07-24 18:06:12.632 ERROR 18812 — [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter :

/***************************
APPLICATION FAILED TO START
/***************************

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).

截图

解决

方法一

pom.xml中mybatis依赖包版本过低，换成高版本的即可

方法二

1. 将mybatis的依赖包注释掉
   
2. 然后刷新maven配置
   

方法三

1. 将mybatis的依赖包注释掉
   

2. clean命令清除整个工程
   

3. 然后再刷新maven配置