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controller layer For testing @RestController public class TestController { @GetMapping("/addSession") public String addSession(HttpServletRequest request) { HttpSession session = request.getSession(); session.setAttribute("name", "dalaoyang"); return "Number of people currently online" + MyHttpSessionListe ...

1. Selection of overall architecture First of all, according to the requirements, I use the springboot+netty architecture, using a serial port to network port conversion module. Why use it like this? The Linux system is used during deployment. It is troublesome to install the driver under Linux, so the network port can save a lot of server con ...

Course objectives Build MyBatis development environmentComplete the operations of adding, deleting, modifying and querying a single table based on annotationsComplete the operations of adding, deleting, modifying and querying multiple tables based on annotationsComplete the operations of adding, deleting, modifying and querying a single table ...

Learn from: Shang Silicon Valley Use of Rest requests Change of access method The original access is to write get, post, delete and put separately, and the Rest request combines them to some extent. Previous: / getUser get user / deleteUser delete user / editUser modify user / saveUser save user Now: / user - > (get delete put post) Impl ...

function Integrate JWT into the project, which is divided into two stages 1. Log in for authentication for the first time. If the authentication is successful, a token will be returned 2. Subsequent requests carry a token for authorization authentication, that is, they need to be re authenticated before each authorization 1 github: Sourc ...

demo address: https://gitee.com/pdh_gitee/redis-cache-demo.git. Redis must be available locally, which is the premise. All demo s are tested on windows. In the spring boot project, you can usually use the automatic cache policy, or you can use the RedisTemplate class to operate redis, and redis can be configured (of course, this is trou ...

Detailed explanation of springboot & filter In fact, the filter is to intercept web resources, and then hand them over to the next filter or servlet for processing. It is usually used to intercept request s for processing, or to intercept the returned response The general flow chart is as follows Application scenario automatic logon ...

1, MongoDB configuration 1. Import jar package <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-mongodb</artifactId> </dependency> 2. Configuration of mongodb basic scanning package 1.In the configuration file bootstrap.properties Add driver to spring.data. ...

catalogue Spring nested transaction rollback Problem description Project background: Problem recurrence 1. Declaration transaction of spring 2. Event processing logic of transaction 3. Actual business Service layer method 4.Druid data source configuration 5. Test execution Log analysis Analyze the cause of the problem summary Trans ...

In project development, JSON format is used for data transmission between interfaces and between front and back ends. 1 fastjson usage Alibaba's fastjson is currently the most widely used JSON parsing framework. This article will also use fastjson. 1.1 introducing dependencies <dependency> <groupId>com.alibaba</groupId&gt ...