Java
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Setting up spring security environment
At present, spring officially only provides Maven download methods. But in http://maven.springframework.org There are …… -
Detailed explanation of single example mode of Java design pattern [lazy and hungry]
This article describes the singleton pattern of Java design pattern. Share with you for your reference, as follows: Si…… -
Explain the integration of spring and Shiro in detail
Shiro's components are JavaBean / POJO components, so it is very easy to use spring for component management. It is ve…… -
On spring boot event monitoring
Spring boot event listener: provides support for message communication between beans. When a bean has done something, …… -
Explain the mutex semaphore and multithreading waiting mechanism in Java
Mutex and semaphore are the basic concepts designed for concurrent programming in the operating system. The difference…… -
Struts 2 development process and detailed configuration
1： Struts development steps: 1. Web project, introduce struts - jar package 2. web. The core function of struts is in…… -
Log4j_ Configuration method (comprehensive explanation)
1、 Log4j introduction Log4j has three main components: loggers, Appenders, and layouts. It can be simply understood h…… -
Spring security database table structure instance code
PD modeling diagram Modeling statement summary The above is the example code of spring security database table structu…… -
Java background method to save Base64 string as picture
This paper introduces the method of saving Base64 strings as pictures in the Java background, which is shared with you…… -
Inheritance and abstract code examples of beans in spring
When we apply spring, we must use abstract classes in general design. How to configure these abstract beans in spring.…… -
Implementation steps of sending SMS in Java
1、 Registering users in China Netcom: This program is implemented through the SMS platform provided by China Netcom. …… -
Java serialization and examples of objectoutputstream and objectinputstream
Java serialization and examples of objectoutputstream and objectinputstream A tested entity class: Test: If you have a…… -
Configuration method based on Hibernate Framework under eclipse (must see)
1、 ORM O: Object object R: Realtion (relational database) M: Mapping mapping ORM: Object Relational Mapping At presen…… -
Detailed introduction of main function in Java
Detailed introduction of main function in Java The main function in Java is familiar to us. I believe everyone who has…… -
Comparison of object placement arrangement between Java and C + +
Comparison of object placement arrangement between Java and C + + Summary: In Java, all objects are stored in the heap…… -
Spring cloud and distributed system
This article is not a tutorial on how to use spring cloud, but discusses what spring cloud is, and the background and …… -
Explain the configuration and use of spring boot actuator in detail
In a production environment, the availability of services needs to be monitored in real time or on a regular basis. Th…… -
Hadoop upload file function example code
Files on HDFS are uploaded to HDFS from local Linux by manually executing commands. In the real running environment, i…… -
Java method example of sending HTTP request through httpclient
Introduction to httpclient Httpclient is not a browser. It is a client HTTP communication implementation library. The …… -
Adapter pattern of design pattern in Java
Adapter pattern of design pattern in Java preface: The adapter pattern can apply a class or interface to another diffe…… -
Deep understanding of Java annotations and examples
Java annotation What is annotation? Annotations in Java are the metadata of Java source code, that is, annotations ar…… -
The Java program is packaged into a jar file with parameters and the instance code
Here, we use Apache commons cli to complete the target function. Without much nonsense, we can directly use the code R…… -
Spring’s programmatic and declarative transactions
Entrance (understand some basic concepts) Spring transaction properties (what are the properties of transactions?) We …… -
Detailed explanation of Java data structures and algorithms (ordered array and binary search)
1、 Overview Binary search is often used in ordered arrays, which can improve the speed of search. Today, we use seque…… -
On the recommended deployment of spring boot microservice project
If you have developed a spring boot program, you should know that the official Maven packaging plug-in of spring boot …… -
Detailed explanation of proxy pattern and decoration pattern examples of Java design pattern
This paper describes the proxy pattern and decoration pattern of Java design pattern. Share with you for your referenc…… -
Implementation of multi condition query of mongodb with Java
Requirement: in the mongdb client, we can easily implement multi condition query, so how to implement it when using ja…… -
Analysis and solution of faults caused by the same bean ID in spring
preface Recently, a colleague's bean configuration problem caused the production environment to write a large amount o…… -
Deep understanding of Java annotations and examples
Java annotation What is annotation? Annotations in Java are the metadata of Java source code, that is, annotations ar…… -
Explain in detail the role of servlet configuration load on startup
In servlet configuration, < load on startup > 1 < / load on startup > means to mark whether the container …… -
Detailed examples of Java custom exception classes
Detailed examples of Java custom exception classes Why write your own exception class? If there is no exception provid…… -
General steps of sending email in Java (example explanation)
General steps of sending email in Java 1、 Import the jar package of JavaMail: 2、 Create a test class to write the ma……