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-# microsphere-build
-Common build settings, plugins configuration, etc. for Microsphere Projects
+# Microsphere Build
+
+---
 
 [![Maven Build](https://github.com/microsphere-projects/microsphere-build/actions/workflows/maven-build.yml/badge.svg)](https://github.com/microsphere-projects/microsphere-build/actions/workflows/maven-build.yml)
 ![Maven](https://img.shields.io/maven-central/v/io.github.microsphere-projects/microsphere-build.svg)
 ![License](https://img.shields.io/github/license/microsphere-projects/microsphere-build.svg)
 [![Average time to resolve an issue](http://isitmaintained.com/badge/resolution/microsphere-projects/microsphere-build.svg)](http://isitmaintained.com/project/microsphere-projects/microsphere-build "Average time to resolve an issue")
 [![Percentage of issues still open](http://isitmaintained.com/badge/open/microsphere-projects/microsphere-build.svg)](http://isitmaintained.com/project/microsphere-projects/microsphere-build "Percentage of issues still open")
+
+## 1. Introduction
+
+Microsphere Build is a Java Maven parent POM with common build settings, plugins configuration, etc, which is used for 
+Microsphere Projects, like [Microsphere Java](https://github.com/microsphere-projects/microsphere-java), 
+[Microsphere Spring](https://github.com/microsphere-projects/microsphere-spring), etc.
+
+
+## 2. Features
+
+Microsphere Build supports the following features:
+- Language Support
+- Plugins Management
+- Profiles Management
+- Project Settings
+
+### 2.1 Language Support
+
+Microsphere Build supports the Maven project building on Java 8+ TLS and Java 17+ TLS.
+
+### 2.2 Plugins Management
+
+#### 2.2.1 Default Inherited Plugins
+
+- [Maven Compiler Plugin](https://maven.apache.org/plugins/maven-compiler-plugin/)
+- [Maven Source Plugin](https://maven.apache.org/plugins/maven-source-plugin/)
+- [Flatten Maven Plugin](https://www.mojohaus.org/flatten-maven-plugin/)
+
+#### 2.2.2 Profile-Specific Plugins
+
+##### 2.2.2.1 Maven Profile `release` Plugins
+
+- [Maven JavaDoc Plugin](https://maven.apache.org/plugins/maven-javadoc-plugin/)
+- [Maven Release Plugin](https://maven.apache.org/plugins/maven-release-plugin/)
+- [Maven Enforce Plugin](https://maven.apache.org/enforcer/maven-enforcer-plugin/)
+- [Maven GPG Plugin](https://maven.apache.org/plugins/maven-gpg-plugin/)
+- [Git Commit Id Plugin](https://github.com/git-commit-id/git-commit-id-maven-plugin)
+- [Nexus Maven Plugin](https://github.com/sonatype/nexus-maven-plugins)
+
+##### 2.2.2.2 Maven Profile `ci` Plugins
+
+- [Sign Maven Plugin](https://www.simplify4u.org/sign-maven-plugin/)
+
+##### 2.2.2.3 Maven Profile `test` Plugins
+
+- [Maven Failsafe Plugin](https://maven.apache.org/surefire/maven-failsafe-plugin/)
+- [Maven Checkstyle Plugin](https://maven.apache.org/plugins/maven-checkstyle-plugin/)
+- [Maven Surefire Plugin](https://maven.apache.org/surefire/maven-surefire-plugin/)
+
+##### 2.2.2.4 Maven Profile `coverage` Plugins
+
+- [Maven JaCoCo Plugin](https://www.eclemma.org/jacoco/)
+
+##### 2.2.2.5 Maven Profile `docs` Plugins
+
+- [Asciidoctor Maven Plugin](https://github.com/asciidoctor/asciidoctor-maven-plugin)
+- [Docbkx Maven Plugin](https://github.com/mimil/docbkx-tools)
+- [Build Helper Maven Plugin](https://www.mojohaus.org/build-helper-maven-plugin/)
+
+
+### 2.3 Profiles Management
+
+- `release`
+- `ci`
+- `test`
+- `coverage`
+- `docs`
+- `java8+` (activated by jdk version)
+- `java9+` (activated by jdk version)
+- `java11` (activated by jdk version)
+- `java9-15` (activated by jdk version)
+- `java16+` (activated by jdk version)
+
+### 2.4 Project Settings
+
+#### 2.4.1 Defaults
+
+##### 2.4.1.1 Resources Settings
+
+```xml
+<resources>
+    <resource>
+        <directory>src/main/java</directory>
+        <filtering>true</filtering>
+        <includes>
+            <include>**/*.properties</include>
+            <include>**/*.xml</include>
+        </includes>
+    </resource>
+    <resource>
+        <directory>src/main/resources</directory>
+        <filtering>true</filtering>
+        <includes>
+            <include>**/*</include>
+        </includes>
+    </resource>
+</resources>
+```
+
+##### 2.4.1.2 Maven Profile `java8+` Settings
+
+[Maven JavaDoc Plugin](https://maven.apache.org/plugins/maven-javadoc-plugin/) will be added the options `-Xdoclint:none`.
+
+##### 2.4.1.3 Maven Profile `java9+` Settings
+
+[Maven Compiler Plugin](https://maven.apache.org/plugins/maven-compiler-plugin/)'s property `maven.compiler.release` 
+references on the another property `${java.version}`.
+
+#### 2.4.1.4 Maven Profile `java11` Settings
+
+[Maven JavaDoc Plugin](https://maven.apache.org/plugins/maven-javadoc-plugin/) will use the configuration `source`
+based on the property `${maven.compiler.source}`.
+
+#### 2.4.1.5 Maven Profile `java9-15` Settings
+
+[Maven Surefire Plugin](https://maven.apache.org/surefire/maven-surefire-plugin/) will append the argument line 
+`--illegal-access=permit` for accessing to internal classes
+
+### 2.4.1.6 Maven Profile `java16+` Settings
+
+[Maven Surefire Plugin](https://maven.apache.org/surefire/maven-surefire-plugin/) will append the argument line
+`--add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED` for accessing to 
+JDK modules' classes.
+
+## 3. Usage
+
+### Java 8+ Maven Project
+
+The root project's pom.xml should set the parent as follows:
+
+```xml
+    <parent>
+        <groupId>io.github.microsphere-projects</groupId>
+        <artifactId>microsphere-build</artifactId>
+        <version>0.1.0</version>
+    </parent>
+```
+
+### Java 17+ Maven Project
+
+The root project's pom.xml should set the parent as follows:
+
+```xml
+    <parent>
+        <groupId>io.github.microsphere-projects</groupId>
+        <artifactId>microsphere-build</artifactId>
+        <version>0.1.1</version>
+    </parent>
+```
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