Java
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Introducing com. Com into eclipse sun. image. codec. Perfect solution to JPEG packet error
When developing a java program in eclipse to process images, two packages need to be introduced: However, sometimes er…… -
Implementation method of feign of spring cloud using HTTP to request remote services
1、 Feign introduction In the spring cloud Netflix stack, each micro service exposes its own service in the form of HT…… -
Implementation of spring security password error locking user for 5 times in Java
Introduction to spring security Spring security is a security framework that can provide declarative security access c…… -
Spring boot (4) uses JWT and spring security to protect the rest API
Under normal circumstances, it is very risky to directly expose the API. If you are directly attacked by a machine, yo…… -
Integrate spring security and customize the verification code instance in spring boot
Final effect 1. Realize page access permission restriction 2. Distinguish user roles and distinguish page permissions …… -
Detailed explanation and comparison of spring transaction isolation and transaction propagation
Detailed explanation and comparison of spring transaction isolation and transaction propagation Spring is the administ…… -
2017 java development job interview questions worth collecting
The following is my own collection of interview questions for Java posts in 2017, which can be used to prepare for the…… -
Spring Security Oauth2. 0 implementation of SMS verification code login example
This article introduces spring security oauth2 0 realizes the login example of SMS verification code, which is shared …… -
Application code example of Java concurrency condition blocking condition
This paper mainly studies the application example code of Java concurrency condition blocking condition, as follows. C…… -
Explain in detail how to use spring security OAuth to implement OAuth 2.0 authorization
OAuth 2.0 is an industrial level authorization protocol. OAuth 2.0 is inherited from OAuth 1.0, which was created in 2…… -
Hibernate closed instance resolution about session
This paper mainly studies the closing of session in Hibernate, as follows. 1. What is the difference between getcurren…… -
How to install Jenkins on CentOS
Jenkins is an open source continuous integration tool written in Java. It can be installed directly on CentOS through …… -
Introduction to using preconditions to check incoming parameters in Java
Preconditions is a class library in guava, which is used to check the incoming parameters. A common usage is as follow…… -
Java generate graphic verification code tool class
Generate verification code effect ValidateCode. Java verification code generation class ImgFontByte. java ValidateCode…… -
Introduction to some new features of Java 9
Accepted characteristics 1 Jigsaw project; Modular source code Jigsaw project is to modularize java code and divide JR…… -
Explanation of enumset instead of bit field code in Java
This paper mainly studies the related content of enumset instead of bit field in Java, which is introduced as follows.…… -
Method to solve the problem of invalid hibernate 4 execution of save() or update()
Recently, I encountered a problem when writing the online mall project: Hibernate did not have any effect after execut…… -
Introduction to session and persistence classes in the Hibernate framework of Java
The session object is used to obtain a physical connection to the database. The session object is lightweight, and an …… -
Java implementation of string permutation and combination
This paper introduces the string arrangement and combination in Java for your reference. The specific contents are as …… -
Judgment of Java interview question parsing and prevention of SQL injection
This paper mainly studies a common question in Java interview questions, the problem of judging and preventing SQL inj…… -
Example of integrated development of spring boot, spark and Cassandra systems
This article demonstrates an example of using spark as the analysis engine, Cassandra as the data store, and spring bo…… -
Code examples of two ways to obtain session in Hibernate
Session: it is a session between an application and a database. It is the center of Hibernate operation and the basis …… -
2018 Java technology interview questions sorting
1. Servlet execution process The client sends an HTTP request, and the web server forwards the request to the servlet …… -
JDK installation and configuration tutorial in Linux
JDK can be downloaded on the official website or from a file server. 1. Create a Java folder in the usr Directory: 2. …… -
Hibernate implements the analysis of adding, deleting, modifying and querying operation examples through session
Today, I learned how to add, delete, modify and query the database through hibernate. Here is a brief introduction: Fi…… -
Detailed explanation of Java ArrayList capacity expansion examples
This paper mainly studies the relevant contents of the detailed explanation of the example of Java ArrayList expansion…… -
Java servlet uploads the picture to the specified folder and displays the picture
In the process of learning servlet, a demo is made for image upload. The functions are: upload the image on page a, cl…… -
Quickly learn about session in Hibernate
Session in Hibernate is a level-1 cache, which can be understood as a process level (thread bar) cache. It always exis…… -
Solutions to errors in double quotation marks in JSON parsing
Sometimes when parsing JSON, you will encounter double quotation marks with English inside, resulting in parsing error…… -
Example of using swagger2 in spring boot project
This article introduces an example of using swagger2 in the spring boot project and shares it with you as follows: Add…… -
Java code implementation of picture overlay effect
This example shares the specific code of Java to realize the display of picture superposition effect for your referenc…… -
Spring boot + mybatis + Vue. JS + elementui implementation of data addition, deletion, modification and query example code (II)
In the last article, I introduced spring boot + mybatis + Vue JS + elementui implements data addition, deletion, modif……