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Introduction to spring security Spring security is a security framework for spring projects. It is also the default technology type of the underlying security module of spring boot. It can realize powerful Web security control. For security control, it provides Authentication，to grant authorization and Protection against common attacks . It ...

Purpose: Read cache to reduce server pressure and improve performance;Temporary data, such as validity verification code; 1,JSR107 (1) java caching defines five core interfaces Cache provider: create, configure, obtain, manage and control the cache manager. An application can access multiple cache providers at runtime;chchemanager: create, ...

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In business, you need to use modules A and B, which use spring Session to share Session data. The business in module B can only be operated after the user logs in. When A calls B's service, it cannot obtain the user's Session information in module B, resulting in module B determining that the requesting user has not logged in, resulting in modu ...

1, Create several sections. package com.tpw.newday.aspect; import cn.hutool.core.util.ObjectUtil; import cn.hutool.core.util.StrUtil; import cn.hutool.json.JSONUtil; import com.tpw.newday.annation.CacheProcesser; import com.tpw.newday.common.MyConstants; import com.tpw.newday.redis.RedisParam; import com.tpw.newday.redis.RedisService; import ...

Uploading files should be the most frequently encountered scenario. Today, let's simply do a Spring Boot file uploading function with you. Without much nonsense, let's start directly.The project structure is as follows:pom dependency<dependencies> <dependency> <groupId>org.springframework.boot</groupId> ...

1, @ ModelAttribute usage Bind request parameters to command object (input parameter object): when placed on the input parameter of the controller method, it is used to bind multiple request parameters to a command object, so as to simplify the binding process, and is automatically exposed as model data for use in view page display; When t ...

Explain the data interaction between the front and back of Ajax springboot in detail 1. Ajax overview The full English name of Ajax is "Asynchronous JavaScript and XML", namely "Asynchronous JavaScript and XML". Its core is to send data requests to the server in an asynchronous way through the XMLHttpRequest object of Java ...

explain: (1) Swagger's main function is to [generate API documents]; Moreover, swagger will update in real time when our project is updated; catalogue 1: Introduce and configure Swagger;   1. In POM XML, introduce the dependencies required by Swagger; 2. At the program entrance MallApplication, use [@ EnableSwagger2 annotation]: o ...

1, Task: The purpose is to extract various commodity information in the network by using java crawler, establish a unified data model to store data, and describe the basic attributes of commodities through the data model. Such as spu, sku, product description, price and other information. At the same time, it is necessary to eliminate unnecess ...