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Maven使用琐碎
优化maven编译速度:
添加环境变量 MAVEN_OPTS -Xms256m -Xmx768m -XX:PermSize=128m -XX:MaxPermSize=256M
为什么设置maven目录路径的环境变量是M2_HOME而不是MAVEN_HOME呢…
原理:看一眼 M2_HOME\bin目录下mvn或mvn.cmd就知道了…
dependency依赖原则:路径最短原则+申明顺序原则
maven的super pom在M2_HOME\lib\maven-model-builder-3.x.x.jar中的org\apache\maven\model下pom-4.0.0.xml
<?xml version="1.0" encoding="UTF-8"?> <!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> <!-- START SNIPPET: superpom --> <project> <modelVersion>4.0.0</modelVersion> <repositories> <repository> <id>central</id> <name>Central Repository</name> <url>https://repo.maven.apache.org/maven2</url> <layout>default</layout> <snapshots> <enabled>false</enabled> </snapshots> </repository> </repositories> <pluginRepositories> <pluginRepository> <id>central</id> <name>Central Repository</name> <url>https://repo.maven.apache.org/maven2</url> <layout>default</layout> <snapshots> <enabled>false</enabled> </snapshots> <releases> <updatePolicy>never</updatePolicy> </releases> </pluginRepository> </pluginRepositories> <build> <directory>${project.basedir}/target</directory> <outputDirectory>${project.build.directory}/classes</outputDirectory> <finalName>${project.artifactId}-${project.version}</finalName> <testOutputDirectory>${project.build.directory}/test-classes</testOutputDirectory> <sourceDirectory>${project.basedir}/src/main/java</sourceDirectory> <scriptSourceDirectory>${project.basedir}/src/main/scripts</scriptSourceDirectory> <testSourceDirectory>${project.basedir}/src/test/java</testSourceDirectory> <resources> <resource> <directory>${project.basedir}/src/main/resources</directory> </resource> </resources> <testResources> <testResource> <directory>${project.basedir}/src/test/resources</directory> </testResource> </testResources> <pluginManagement> <!-- NOTE: These plugins will be removed from future versions of the super POM --> <!-- They are kept for the moment as they are very unlikely to conflict with lifecycle mappings (MNG-4453) --> <plugins> <plugin> <artifactId>maven-antrun-plugin</artifactId> <version>1.3</version> </plugin> <plugin> <artifactId>maven-assembly-plugin</artifactId> <version>2.2-beta-5</version> </plugin> <plugin> <artifactId>maven-dependency-plugin</artifactId> <version>2.8</version> </plugin> <plugin> <artifactId>maven-release-plugin</artifactId> <version>2.3.2</version> </plugin> </plugins> </pluginManagement> </build> <reporting> <outputDirectory>${project.build.directory}/site</outputDirectory> </reporting> <profiles> <!-- NOTE: The release profile will be removed from future versions of the super POM --> <profile> <id>release-profile</id> <activation> <property> <name>performRelease</name> <value>true</value> </property> </activation> <build> <plugins> <plugin> <inherited>true</inherited> <artifactId>maven-source-plugin</artifactId> <executions> <execution> <id>attach-sources</id> <goals> <goal>jar</goal> </goals> </execution> </executions> </plugin> <plugin> <inherited>true</inherited> <artifactId>maven-javadoc-plugin</artifactId> <executions> <execution> <id>attach-javadocs</id> <goals> <goal>jar</goal> </goals> </execution> </executions> </plugin> <plugin> <inherited>true</inherited> <artifactId>maven-deploy-plugin</artifactId> <configuration> <updateReleaseInfo>true</updateReleaseInfo> </configuration> </plugin> </plugins> </build> </profile> </profiles> </project> <!-- END SNIPPET: superpom -->
Maven使用琐碎
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