controller 2018-10-29 21:16:40.997 ERROR 9580 --- [nio-8088-exec-1] o.a.c.c.C.[.[.[ ].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.s...
the company has built a Spring Cloud micro-service framework and now wants to provide a micro-service interface for executing sql statements. the question now is how to design better: 1. The interface parameters should contain the sql statement to be e...
https: blog.csdn.net w059805. it is said in this article that the size of the database connection pool on the client side of has been reduced from 2048 to 96. The number of concurrent threads on MySQL server has been maintained at 9600 . what I won...
I have seen all kinds of connection pooling, and some of them will suspend themselves when they are exhausted and will not accept additional connection acquisition requests. When some connection pooling connections are exhausted, additional connection ac...
when cross-compiling radiotap, there is no `le32toh definition: https: github.com radiotap r. take a look, in the header file endian.h defined, and then can not find out where the header file endian.h, kernel include does not contain is defi...
maven suddenly encountered an exception and could not download any mirrored jar packages and pom files. The strange thing is that it is completely normal to access directly in the browser or directly curl links under the terminal. operating system is ...
after WeChat Pay s client paid, Wechat s server did not request my callback address! at first I thought it was the code, so I added a log record before the asynchronous callback was processed! The result is not good later I applied for another cer...
what is this reminder that RecyclerView can t find it? I have three classes here, SystemMessageFragment extends LazyFragment extends BaseFragment. in turn. Here is the error log and three classes SystemMessageFragment public class SystemMessageFra...
what is this options request for? now it is in this options that there is a cross-domain error and then there is no post request . normally, there is an options request followed by a post request ...