Java

solve ：org.mybatis.spring.MyBatisSystemException nested exception is org.apache.ibatis.exceptions

Mybatis combination Spring report errors ：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.TooManyResult...
2022-03-24 17:27 views 161

from Linux Server download file to local command

from Linux Server downloads folder to local 1, use scp command scp /home/work/source.txt [email protected]:/home/work/ # Put the local source.txt ...
2022-03-24 12:04 views 180

Java Three modifiers in ?【abstract,static,final】( seven )

The first modifier abstract? ( Abstract ) one ,abstract Can decorate classes (1) cover abstract The modified class is called an abstract class (...
2022-03-23 19:06 views 50

redis Cache warm up

1. Idea of cache preheating a. Give in advance redis Partial data embedded in , Re provision of services b. It is definitely impossible to write a...
2022-03-23 11:13 views 342

Outsourcing for five years , Abandoned ...

If I hadn't been abandoned by my girlfriend , I guess I'm not awake yet . College Students ,19 In, he entered a software company in Hunan through ...
2022-03-22 15:46 views 16

Summary of seven sorting algorithms

1. stability ( important ) Two equal data , If after sorting , The sorting algorithm can ensure that its relative position does not change , Then w...
2022-03-22 12:13 views 15

Landlords game Basic Edition

import java.util.*;public class game { private String size; private String color; private int idenx; public game() { } public gam...
2022-03-22 11:45 views 61

linux Open specified port command

linux Open specified port command mode 1 CentOS：1, Turn on Firewall systemctl start firewalld2, Open designated port firewall-cmd --zone=public --a...
2022-03-22 10:05 views 28

opencv Mat understand

Function one #include <opencv2/opencv.hpp>cv::Mat func(cv::Mat input) { input.setTo(0); //input = cv::Mat::ones(4, 4, CV_32F); retu...
2022-03-21 09:51 views 20

Java - database JDBC programming

This section target database driver JDBC Grasp the concept and function of JDBC Master the working principle of JDBC Master the database based app...
2022-03-20 22:20 views 21
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