java FAQ

1. Spring MVC No converter found for return value of type 解决方法

改原因是解析不了response的java对象

解决方案参见：

https://blog.csdn.net/qq_26115733/article/details/70666938

2.解决 eclipse 在编译 打包 部署 maven 项目的时候 WEB-INF/lib 为空 没有 jar的问题

选择项目属性，找到Deployment assembly 

完成后，重新部署发布到tomcat就可以了。

 3. Server Tomcat v8.0 Server at localhost was unable to start within 45 seconds. If the server requires

解决方案：

 https://blog.csdn.net/testcs_dn/article/details/50887672

 4. Server Tomcat v8.0 Server at localhost was unable to start within 45 seconds. If the server requires

 https://blog.csdn.net/u012453843/article/details/54906905

 5.关于springboot2.0.0配置多数据源出现jdbcUrl is required with driverClassName的错误

https://blog.csdn.net/newhanzhe/article/details/80763581