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Caused by: org.springframework.context.ApplicationContextException: Failed to start bean 'org.springframework.kafka.config.internalKafkaListenerEndpointRegistry'; nested exception is java.lang.IllegalStateException: Topic(s) [test] is/are not present and .

一、问题引入：1、我在实现 姓名，年龄段的组合查询功能【报错】Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter ‘n...

1、目的：读取该路径下的log.txt文件 C:\Users\Lyndee\Desktop2、实现File f = new File("C:\\Users\\Lyndee\\Desktop\\log.txt"); InputStreamReader isr = new InputStreamReader(new FileInputStream(f)); Buf...

错误：java.sql.SQLException: Access denied for user ‘’@‘localhost’ (using password: YES)This application has no explicit mapping for /error, so you are seeing this as a fallback.问题出现：在用springboot连接了数...