Programmer Group

1. XPath 1.1 What is XPath XPath (XML Path Language) is a language for finding information in XML and HTML documents, which can be used to traverse elements and attributes in XML and HTML documents. 1.2 XPath Development Tools 1.2.1 Chrome Plugin XPath Helper https://jingyan.baidu.com/article/1e5468f94694ac484861b77d.html 1.2.2 Firefox Plugin X ...

Step 1: LoginActivity.xml The interface is relatively simple, so there is no need to paste the content here, and the renderings are pasted here.   2.LoginActivity.java The logic processing code is as follows: public class LoginActivity extends AppCompatActivity { private EditText et_username; private EditText ...

introduce In this paper, we refer to How to deploy spring boot gracefully on weblogic Mybatis is deployed on weblogic Server by using springboot. Environmental Science Development tool: Eclipseweblogic version: 10.3.6.0weblogic-jdk: 1.8.0_91 Technology realization Create Maven project and add it to pom file <project xmlns="http://maven.apac ...

I am not busy recently, so I look back on what I have learned and contacted in this year. I suddenly feel that blogging is a good way, and I hope I can stick to it. Custom View process Create a custom class to inherit the View, and override the constructor. There are four constructors in total. We only need to inherit the first ...

Today, I'd like to give you a little bit of fun. Use python to crawl the pictures to the local area. The website is https://www.pexels.com/ This website is a foreign language network, so the search image should be in English. What we need to do today is search and download the image in python, and make a web APP. Direct code from b ...

Scrapy redis distributed crawler introduce By using the set of redis, the request queue and items queue can be realized, and by using the set of redis, the request can be de duplicated, so that the scale of crawler cluster can be realized Scratch redis is a scratch component based on redis • distributed Crawlers Multiple crawler insta ...

SpringBoot configuration related 1. Profile injection _In SpringBoot you can inject a configuration file with four notes:   @ConfigurationProperties   @Value   @PropertySource   @ImportResource _1.@ConfigurationProperties usage _Centered like this in my profile application.yml person: lastName: hello age: 18 boss: false birth: 2017/12/12 ...

I. Preface Similar projects have been done many years ago. It's just to upload the local pictures to the server. It's so simple. In fact, it's easy to upload with http post. You don't need to customize the protocol. You can directly set the binary data. If you use TCP or UDP communication, you must customize the protocol, because you don't know ...

Step 1: add dependency <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency> Step 2: define a tangent class package com.example.demo.aop; import java.lang.reflect.Method; import java.util.Arr ...

Close main station [root@dell710 ~]# bash /usr/local/tomcat/bin/shutdown.sh Using CATALINA_BASE: /usr/local/tomcat Using CATALINA_HOME: /usr/local/tomcat Using CATALINA_TMPDIR: /usr/local/tomcat/temp Using JRE_HOME: /usr/local/javaUsing CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomca ...