                        课程
                    
                        /后端开发
                        
                            /Java
                        
                        /SpringBoot+MyBatis搭建迷你小程序

这个错误是为什么啊

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

2020-01-01 09:23:42.613 ERROR 26148 --- [ main] o.s.boot.SpringApplication : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [com/imooc/demo/config/dao/SessionFactoryConfiguration.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Property 'dataSource' is required