Four ways for IOC container to create bean objects

preface: The Spring container creates a bean object. Generally, it finds the class to be instantiated by looking up the class attribute value of the bean element through the reflection mechanism, so as to instantiate the bean object. This is to call the constructor to instantiate the bean object In some cases, a simple xml configuration file ...

Posted by VinnyWolf on Mon, 06 Dec 2021 22:12:24 -0800

The Spring framework uses JDBC template to connect to the database

JDBCTemplate JDBC template (concept and preparation) What is a JdbcTemplate The Spring framework encapsulates JDBC and uses JdbcTemplate to facilitate database operation preparation Introduce related jar packages [the external chain image transfer fails. The source station may have an anti-theft chain mechanism. It is recommended to ...

Posted by samsunnyuk on Mon, 06 Dec 2021 20:53:20 -0800

Spring transaction management

Spring transaction management 1. Business What is a transaction A set of operations either succeeded or failed Characteristics of transactions ACID Atomicity, a group of operations is a whole, either all successful or all failed, and cannot be separatedConsistency: the data is consistent before and after the transactionIsolation: multipl ...

Posted by romic on Mon, 06 Dec 2021 20:52:09 -0800

Springboot+AOP + custom annotation implements operation log and exception log

         In our daily work, we often encounter the need to implement the functions of operation log, login log, error log, etc. the young partners who have just joined the company do not know what to do, or the first idea is to write a method to add to the log table in each method in the business code, bu ...

Posted by LonelyPixel on Sun, 05 Dec 2021 22:09:11 -0800

Spring5 Quick Start [Basic Summary]

1. Spring5 1.1 Introduction Spring - > brings spring to the software industry!The Spring framework is redesigned based on interface21!Spring concept: Making existing technology easier to use is a hodgepot that integrates existing technology frameworks!Spring is a lightweight framework for IoC and AOP containers. A framework for providing b ...

Posted by rodolp13 on Sun, 05 Dec 2021 21:03:56 -0800

11 spring web - commodity module implementation

1. Complete commodity classification business 1.1 page JS analysis Life cycle function //Define initialization function created() { //Get commodity classification list data by default this.findItemCatList() }, Get data function description async findItemCatList() { const { data: result } = a ...

Posted by sometimes on Sun, 05 Dec 2021 20:35:32 -0800

Online problem handling - feign call error (legal character ((ctrl-char, code 31)): only regular white space (\ R \ n \ T))

Online problem handling - feign call error Business scenario: Service 1 invokes service 2 through Feign. In the test phase, everything is normal and there is data loss online (to avoid simple reproduction of sensitive local). Errors are reported as follows: 2021-12-04 13:47:47.774 DEBUG 29480 --- [io-10011-exec-1] .w.s.m.m.a.ServletInvocableH ...

Posted by jokeruk on Sun, 05 Dec 2021 18:01:22 -0800

Spring mvc-part02 first MVC program

2. First MVC program Hello,SpringMVC 2.1 configuration version 1. Create a new Moudle, springmvc-02-hello, and add web support! 2. Confirm that the dependency of spring MVC is imported! 3. Configure web.xml and register dispatcher Servlet <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" ...

Posted by moyse on Sun, 05 Dec 2021 17:21:12 -0800

Introduction to SringMVC Framework

Catalog view resolver Exception Handler Interceptor File Upload JSON data interaction RESTful support view resolver         View Parser: Add the page path section to the configuration file                    No View Parser return "/WEB-INF/show01.jsp";         With ...

Posted by wgordonw1 on Sun, 05 Dec 2021 13:47:59 -0800

Application practice of integrating MyBatis with SpringBoot

catalogue MyBatis environment initialization summary Create project module Add project dependency Mybatis simple configuration implementation. Create project startup class Environment test code implementation Announcement data layer MyBatis practice Business description Pojo class design Dao interface and method Implementation and a ...

Posted by tsfountain on Sun, 05 Dec 2021 13:42:58 -0800