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This article introduces the relevant knowledge of "how to output maven multi-module projects into a component". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Desktop production line my maven code engineering xxx display xxx-web host xxx-app keyboard xxx-domian mouse xxx-infrastration desktop xxx-all.jar

Although not exactly corresponding, I use the open source dubbo to describe my problem.

Dubbo developer: dubbo's open source project uses maven multi-module development, the internal module is divided into very fine.

Make full use of the sub-module design idea of desktop computer.

Dubbo users: I only need to introduce a dubbo-all dependency to use dubbo

Just like desktop users, all I need is a usable desktop, according to the user's manual. I don't want to know what's inside.

You only need to introduce coordinates:

Com.alibaba dubbo 2.7.0 true background

Recent business development work has encountered a similar problem.

Answer the question, where are we? Current common component programmer development uses multiple modules to develop a component, while business programmers want to reference only one component where are we go? Aim to develop a common component with multiple modules, and a business project only needs to introduce a module how we go there? Implement path maven-shade-plugin implement path shade

Shade provides the ability to package your maven multi-module artifacts and component dependencies into a super jar package.

It is bound to the package phase of the maven life cycle and provides a unique goal instruction shade:shade for mavn

Its system operating environment requirements are:

Operation requirements indicate that there is no minimum space requirement for maven3 minimum maven3jdk7 minimum jdk7 memory and disk

The usage is as follows:

Org.apache.maven.plugins maven-shade-plugin 3.2.4 org.apache.maven.plugins maven-shade-plugin 3.2.4 package shade

Common configuration properties:

ApacheLicenseResourceTransformer

Prevent duplicate certificates

ApacheNoticeResourceTransformer

Prepare merge Notification

AppendingTransformer

Add as a resource

ComponentsXmlResourceTransformer

Aggregate components.xml from

DontIncludeResourceTransformer

Exclude resource files

IncludeResourceTransformer

Included resource files

ManifestResourceTransformer

Entry for manifest

ServicesResourceTransformer

Merge meta-info/services resources

XmlAppendingTransformer

Add xml content as a xml resource dubbo

It mainly depends on the configuration of dubbo-all module:

4.0.0 org.apache.dubbo dubbo-parent ${revision}.. / pom.xml dubbo jar dubbo-all The all in one project of dubbo org.apache.dubbo dubbo-config-api ${project.version} compile true Org.apache.maven.plugins maven-shade-plugin package shade True false com.alibaba:hessian-lite Org.apache.dubbo:dubbo-config-api META-INF/dubbo/internal/org.apache.dubbo.common.compiler.Compiler META-INF/dubbo/internal/org.apache.dubbo.common.config.configcenter.DynamicConfigurationFactory Org.apache.dubbo:dubbo com/** org/** META-INF/dubbo/**

In order to control that the code takes up too much content, the pom posted above is configured to delete a large number of the same or similar nodes. Let's disassemble its structure:

The core node indicates that the dependency is directly dependent, that is, the included module pluginshade in the current project

Core configuration of shade

Configuration instructions (see name, guess first) phase hookup in the package phase of the life cycle of maven goal provides unique goal instructions shadecreateSourcesJar whether to create the source code into the jar package, it is convenient for ide to see whether the source code promoteTransitiveDependencies is packaged indirectly dependent on the sub-modules contained in artifactSet-includes-include or excluded sub-modules transformers-transformer-resource converter configuration excludes >-filter filter to discharge some files

Look at the code above.

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