On the usage of traversing set attributes with jstl Tags

  in MVC Model, Model or Map is usually used to store Model data in Request domain or Session domain, so that the Model data put in the back-end controller can be obtained from the front-end page of WEB project. The set attributes often need to be rendered into a table form on the page. The following record is abou ...

Posted on Wed, 01 Apr 2020 11:39:34 -0700 by Undrium

jmeter testing java code

Sometimes you always have to write code. You have to be able to write code. If you don't look down on java requests, you need to write code. First, implement a class,     package com.company.jemeters; public class Hello { public int sum(int a,int b) { return a+b; } } To implement an addition, let's write the test class Yo ...

Posted on Wed, 01 Apr 2020 11:16:13 -0700 by rahnel

[2-sat] bzoj1823: [JSOI2010] full seat

bzoj 1823: [JSOI2010] full seat http://www.lydsy.com/JudgeOnline/problem.php?id=1823 2-sat template question dalao one eye A Here are the template questions - > http://caioj.cn/problem.php?id=1405 One material has two methods For example, reviewer a requires that material 1 should be made into Chinese style, and ...

Posted on Wed, 01 Apr 2020 11:11:23 -0700 by rschneid

HDOJ6188 Duizi and Shunzi (greedy)

Title Link Idea: first of all, we can think that the answer of matching pairs must be big. Then, if matching to i, the matching pair will have one card left. See if i+1 is an odd number of cards. If so, match i, i+1, i+2 directly. Even if i+2 is an even number of cards, it is just to change the surplus for a pair. But the rema ...

Posted on Wed, 01 Apr 2020 10:26:31 -0700 by monarlte

Bitwise operator -- switch state of management transaction

1. What is switch state In reality, there are a lot of data with only two results (values), corresponding to our Boolean values. Here, the so-called switch state of managing a group of transactions should be understood as managing several "data symbols" with only two states. For example, there are 5 bulbs, corresponding to 5 status da ...

Posted on Wed, 01 Apr 2020 10:17:52 -0700 by daijames

Docker discovery-swarm to build docker cluster

Origin: http://www.cnblogs.com/520playboy/p/7873903.html Preface Swarm was an independent project prior to Docker version 1.12. After the release of Docker version 1.12, the project was merged into Docker and became a subcommand of Docker. Doker swarm is a tool for creating a server cluster, which requires only a few commands to create a ...

Posted on Wed, 01 Apr 2020 10:14:08 -0700 by stormszero

Mysql commands commonly used in operation and maintenance

1. Check which libraries are available > show databases; 2. View the table of a library > use db1; show tables; 3. View the fields of the table > desc tb1; 4. View the statement of table creation > show create table tb1; 5. Which user is it currently > select user(); 6. View the current library > select databa ...

Posted on Wed, 01 Apr 2020 09:42:57 -0700 by phil88

Centos7 builds Gitlab service

1 installation foundation package yum -y install curl policycoreutils openssh-server openssh-clients 2 start sshd systemctl enable sshd systemctl start sshd 3 add firewall rules firewall-cmd --permanent --add-service=http systemctl reload firewalld or yum install firewalld systemctl unmask firewalld 4. Add d ...

Posted on Wed, 01 Apr 2020 09:41:50 -0700 by Vball

Configuration and acquisition of meta data extended element data in Android learning Manifest

In the Android manifest.xml manifest file, we can sometimes see the following configuration content similar to the beginning of the < meta data... > element: <meta-data       android:name="com.google.android.maps.v2.API_KEY"       android:value="AIzaSyBhBFOgVQclaa8p1JJeqaZHiCo2nfiyBBo" />   <meta-data       and ...

Posted on Wed, 01 Apr 2020 09:29:50 -0700 by CtrlAltDel

easyui authentication extension

Problem Description: As shown above: when users add information, they must ensure that a team can only have one piece of data a day. Therefore, when the report date is selected, you must query whether the data of the current team in the database exists. If it does not exist, i.e. the current date team has no data, data can be added; otherwise, ...

Posted on Wed, 01 Apr 2020 09:11:13 -0700 by mmponline