Recent Posts
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On the running mechanism and error analysis of Java program
JVM (Java virtual machine) a specification for computing devices that can be implemented in different ways (software o…… -
Explain in detail the thread support of executorservice, callable and future in JDK
Explain in detail the thread support of executorservice, callable and future in JDK 1. Code background: If there are t…… -
Detailed explanation of spring boot mybatis
This article focuses on the annotated example code of spring boot mybatis. For details, please refer to this article: …… -
Spring boot uses admin to monitor applications
The monitoring interfaces provided by spring boot, such as: / health, / info, etc. in fact, in addition to the previou…… -
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 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…… -
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…… -
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…… -
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…… -
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…… -
On spring boot event monitoring
Spring boot event listener: provides support for message communication between beans. When a bean has done something, …… -
What language is Hadoop
What is Hadoop? Hadoop is a software platform for developing and running large-scale data processing. It is an open-so…… -
Detailed explanation of the use of iterators in Java
Detailed explanation of the use of iterators in Java preface: The iterator pattern encapsulates a collection, mainly p…… -
Implementation of thread waiting and notification in Java
Implementation of thread waiting and notification in Java preface: The key points to remember about waiting / notifica…… -
Exception handling method based on Java sub thread (general)
In ordinary single threaded programs, you only need to catch exceptions through try catch ... finally ... Just code bl…… -
Internationalization of spring security and configuration and use of usercache
International configuration The path of the message file is configured in basename In spring-security-core-3.2 0.M1. O…… -
On the scope of request, session and global session in spring learning
For the scope related to the web container, first configure it in the web container. Request scope Consider the follow…… -
Redis cache database query source code implemented by spring AOP
Application scenario We hope to cache the database query results in redis, so that we can directly get the results fro…… -
Java method for obtaining source code of any HTTP web page
This example describes the source code of any HTTP web page obtained by Java. Share with you for your reference, as fo…… -
Java tree storage structure implementation example code
1、 Tree Different from linear structures such as linear table, stack and queue, tree is a nonlinear structure. A tree…… -
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…… -
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 …… -
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 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…… -
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…… -
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…… -
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…… -
Dead loop of Java non static member variables (detailed explanation)
1. Non static member variable 翻译错误 TIMEOUT example: result: Analysis: when new constructorcls() instantiates const…… -
An instance of list segmentation in Java
An instance of list segmentation in Java Problem: suppose system a finds a large list, and now system B wants to get t…… -
Spring security custom login page
In the project, we certainly can't use the login page generated by spring, but use our own login page. Let's talk abou…… -
Spring MVC file upload sample code
As always, record common and easy to forget things. This blog post is mainly about how spring MVC uploads files. The f…… -
Detailed explanation of three simple implementation methods of Java countdown
After writing JS countdown, I suddenly want to use java to realize the countdown. I wrote three implementation methods……