What are the meanings of scope, optional and exclusions in maven

This article introduces the relevant knowledge of "what are the meanings of scope, optional and exclusions in maven". In the operation process of actual cases, many people will encounter such difficulties. Next, let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

scope

compile //default, this dependency participates in compiling, testing, and running the project and is packaged into the project

runtime ////This dependency is used only at runtime, typically for example with JDBC drivers, such as the JDBC API only at compile time and the JDBC driver implementation only at runtime

provided //This dependency participates in compiling, testing, and running the project, is not packaged into the project, and is expected to be provided by the environment in which it runs

system //is similar to provided, except that the dependency is not found from the maven repository, but from the project system path, requiring explicit provision of the jar containing the dependency.

test //This dependency only participates in project testing and is used to compile and run test code, not packaged into the project

import //mavenProperties released after version 2.0.9 can only be used in dependencyManagement

optional //This dependency is passed only in this project

exclusions //exclude dependencies passed by subprojects

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