手寫maven外掛
阿新 • • 發佈：2019-02-14
一、建立外掛專案
1、建立一個maven專案,如下圖：
2、引入jar包：
3、實現自己的外掛功能：<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.ayb</groupId> <artifactId>ayb-plugin</artifactId> <version>1.0-SNAPSHOT</version> <packaging>maven-plugin</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.7</java.version> </properties> <dependencies> <dependency> <groupId>org.apache.maven</groupId> <artifactId>maven-plugin-api</artifactId> <version>3.5.0</version> </dependency> <dependency> <groupId>org.apache.maven.plugin-tools</groupId> <artifactId>maven-plugin-annotations</artifactId> <version>3.5</version> <scope>provided</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <verbose>true</verbose> <fork>true</fork> <executable>${JAVA_HOME}/bin/javac</executable> </configuration> </plugin> </plugins> </build> </project>
4、使用install命令，在maven倉庫生成jar包package com.ayb; import org.apache.maven.plugin.AbstractMojo; import org.apache.maven.plugin.MojoExecutionException; import org.apache.maven.plugin.MojoFailureException; import org.apache.maven.plugins.annotations.LifecyclePhase; import org.apache.maven.plugins.annotations.Mojo; /** * Created by Administrator on 2018/6/23 0023. */ @Mojo(name="myPlugin",defaultPhase = LifecyclePhase.PACKAGE) public class MyMojo extends AbstractMojo{ public void execute() throws MojoExecutionException, MojoFailureException { System.out.println("我的外掛"); } }
二、在一個新的專案中引入剛剛建立的maven外掛
1、建立maven專案，過程同上。或者選擇已有的專案
3、重新整理後Plugins列表中出現新引入的外掛，雙擊執行，控制檯輸出我們在外掛中輸出的內容<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.ayb</groupId> <artifactId>spring-mini-1.0</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <name>spring-mini-1.0</name> <!-- FIXME change it to the project's website --> <url>http://www.example.com</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.7</java.version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> <scope>provided</scope> <exclusions> <exclusion> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> </dependencies> <build> <finalName>spring-mini-1.0</finalName> <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> <plugins> <plugin> <artifactId>maven-clean-plugin</artifactId> <version>3.0.0</version> </plugin> <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> <plugin> <artifactId>maven-resources-plugin</artifactId> <version>3.0.2</version> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.7.0</version> </plugin> <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.20.1</version> </plugin> <plugin> <artifactId>maven-war-plugin</artifactId> <version>3.2.0</version> </plugin> <plugin> <artifactId>maven-install-plugin</artifactId> <version>2.5.2</version> </plugin> <plugin> <artifactId>maven-deploy-plugin</artifactId> <version>2.8.2</version> </plugin> </plugins> </pluginManagement> <plugins> <plugin> <groupId>org.apache.tomcat.maven</groupId> <artifactId>tomcat7-maven-plugin</artifactId> <!--如果不設定，則預設為貓的自定義埠，專案路徑為http://localhost:預設埠/專案名 --> <configuration> <!--如果埠號改為8081：那麼訪問的時候路徑的埠就要寫成8081，否則404 --> <port>8080 </port> <!-- 如果設定為/，則專案了路徑為http://localhost:埠號 /--> <!-- 如果設定為/123，則專案了路徑為http://localhost:埠號/123 --> <path>/</path> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <verbose>true</verbose> <fork>true</fork> <executable>${JAVA_HOME}/bin/javac</executable> </configuration> </plugin> <plugin> <groupId>com.ayb</groupId> <artifactId>ayb-plugin</artifactId> <version>1.0-SNAPSHOT</version> </plugin> </plugins> </build> </project>
4、重新執行install命令，會發現新引入的外掛未執行
"C:\Program Files (x86)\Java\jdk1.7.0_25\bin\java" -Dmaven.multiModuleProjectDirectory=E:\java\workspace\spring-mini-1.0 -Dmaven.home=E:\software\apache-maven-3.3.9 -Dclassworlds.conf=E:\software\apache-maven-3.3.9\bin\m2.conf -Didea.launcher.port=7535 "-Didea.launcher.bin.path=E:\java\idea\IntelliJ IDEA 15.0.6\bin" -Dfile.encoding=UTF-8 -classpath "E:\software\apache-maven-3.3.9\boot\plexus-classworlds-2.5.2.jar;E:\java\idea\IntelliJ IDEA 15.0.6\lib\idea_rt.jar" com.intellij.rt.execution.application.AppMain org.codehaus.classworlds.Launcher -Didea.version=15.0.6 -s E:\software\apache-maven-3.3.9\conf\settings.xml install
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building spring-mini-1.0 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:3.0.2:resources (default-resources) @ spring-mini-1.0 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ spring-mini-1.0 ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:3.0.2:testResources (default-testResources) @ spring-mini-1.0 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory E:\java\workspace\spring-mini-1.0\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ spring-mini-1.0 ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.20.1:test (default-test) @ spring-mini-1.0 ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-war-plugin:3.2.0:war (default-war) @ spring-mini-1.0 ---
[INFO] Packaging webapp
[INFO] Assembling webapp [spring-mini-1.0] in [E:\java\workspace\spring-mini-1.0\target\spring-mini-1.0]
[INFO] Processing war project
[INFO] Copying webapp resources [E:\java\workspace\spring-mini-1.0\src\main\webapp]
[INFO] Webapp assembled in [84 msecs]
[INFO] Building war: E:\java\workspace\spring-mini-1.0\target\spring-mini-1.0.war
[INFO]
[INFO] --- maven-install-plugin:2.5.2:install (default-install) @ spring-mini-1.0 ---
[INFO] Installing E:\java\workspace\spring-mini-1.0\target\spring-mini-1.0.war to D:\MAVEN\com\ayb\spring-mini-1.0\1.0-SNAPSHOT\spring-mini-1.0-1.0-SNAPSHOT.war
[INFO] Installing E:\java\workspace\spring-mini-1.0\pom.xml to D:\MAVEN\com\ayb\spring-mini-1.0\1.0-SNAPSHOT\spring-mini-1.0-1.0-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.006 s
[INFO] Finished at: 2018-06-24T15:32:39+08:00
[INFO] Final Memory: 9M/47M
[INFO] ------------------------------------------------------------------------
Process finished with exit code 0
是因為新引入的外掛沒有掛載到maven的生命週期中
5、掛載外掛
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>myPlugin</goal>
</goals>
</execution>
</executions>
三、向外掛中插入引數：
1、在外掛實現類中宣告一個全域性變數
package com.ayb;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
/**
* Created by Administrator on 2018/6/23 0023.
*/
@Mojo(name="myPlugin",defaultPhase = LifecyclePhase.PACKAGE)
public class MyMojo extends AbstractMojo{
@Parameter
private String msg;
public void execute() throws MojoExecutionException, MojoFailureException {
System.out.println("我的外掛"+msg);
}
}
2、在引入外掛專案的pom檔案中新增引數
3、執行 Install命令
4、傳入集合
5、傳入命令引數
