N_007的博客

org.springframework.web.client.ResourceAccessException: I/O error on POST request for "http://e-commerce-authority-center/ecommerce-authority-center/authority/token": e-commerce-authority-center; nested exception is java.net.UnknownHostException: e-commerc

Windows 下安装 RocketMQ 遇到的问题，此时不应有 \rocketmq-4.9.3\bin)。错误: 找不到或无法加载主类 Files\Java\jdk1.8.0_181\lib\dt.jar;D:\Program

在使用 Spring JPA 进行数据库保存操作时，提示该错误错误意思是 在调用save()方法之前之前，必须手动添加此类的ID。数据库 id 字段已设置自动增长，发现实体类 id 并未设置自动增长属性，加入@GeneratedValue(strategy = IDENTITY) 标签即可 @Id @GeneratedValue(strategy = IDENTITY) private Long id;...

数据库连接参数如下警告: com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@1fdce27 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to su

问题：在本地跑，一切正常。到服务器，立马出错。c:forTokens 就报错 The method setItems(String) in the type ForTokensTag is not applicable for the argume1.jstl.jar 重复参考：jstl.jar 包 重复 排除 jstl 重复的可能性2. standard