体验maven插件功能，同时打包jar和war
体验maven插件功能，同时打包jar和war
maven 是一个java编写的用于构建系统的自动化工具,正在逐渐取代Ant,成为主流的工具.
官方主页:http://maven.apache.org/
maven打包的格式，可以为：pom , jar , maven-plugin , ejb , war , ear , rar , par。但是maven同时只能生成一种类型的包，在实际项目中，如果
同时生成几种类型的包，如生成jar,同时生成war，并将新生成的jar也打到war中。这就需要使用maven的插件功能,下面列举一些常用的插件:
1 同时生成jar和war, war在主文件中,用plugin生成jar???????????
???????? <plugin>
??????????????? <groupId>org.apache.maven.plugins</groupId>
??????????????? <artifactId>maven-jar-plugin</artifactId>
????<configuration>
?????<encoding>UTF-8</encoding>
????</configuration>
??????????????? <executions>
??????????????????? <execution>
??????????????????????? <phase>package</phase>
??????????????????????? <goals>
??????????????????????????? <goal>jar</goal>
??????????????????????? </goals>
??????????????????????? <configuration>
??????????????????????????? <classesDirectory>target/classes</classesDirectory>
??????????????????????????? <finalName>fooWebApp</finalName>
??????????????????????????? <outputDirectory>target/fooWebApp/WEB-INF/lib</outputDirectory>
??????????????????????? </configuration>
??????????????????? </execution>
??????????????? </executions>
??????????? </plugin>
2 类似于ant的文件复制?
?????????? <plugin>
??????????????? <artifactId>maven-resources-plugin</artifactId>
??????????????? <version>2.4.1</version>
????<configuration>
?????<encoding>UTF-8</encoding>
????</configuration>
??????????????? <executions>
??????????????????? <execution>
??????????????????????? <id>copy-resources</id>
??????????????????????? <phase>generate-sources</phase>
??????????????????????? <goals>
??????????????????????????? <goal>copy-resources</goal>
??????????????????????? </goals>
??????????????????????? <configuration>
??????????????????????????? <outputDirectory>
??????????????????????????????? src/main/webapp/WEB-INF/lib
??????????????????????????? </outputDirectory>
??????????????????????????? <resources>
??????????????????????????????? <resource>
??????????????????????????????????? <directory>
??????????????????????????????????????? target/jar
??????????????????????????????????? </directory>
??????????????????????????????????? <filtering>true</filtering>
??????????????????????????????? </resource>
??????????????????????????? </resources>
??????????????????????? </configuration>
??????????????????? </execution>
??????????????? </executions>
??????????? </plugin>
3 指定jdk版本?
??????<plugin>
????<groupId>org.apache.maven.plugins</groupId>
????<artifactId>maven-compiler-plugin</artifactId>
????<configuration>
?????<source>1.5</source>
?????<target>1.5</target>
?????<encoding>UTF-8</encoding>
????</configuration>
???</plugin>
4 指定编码格式?
?????<plugin>
????<groupId>org.apache.maven.plugins</groupId>
????<artifactId>maven-resources-plugin</artifactId>
????<configuration>
?????<encoding>UTF-8</encoding>
????</configuration>
???</plugin>
???
注意: maven打包和构建是异步执行的，同时执行多个任务时，可能会发生IO错误，如要拷贝的文件夹正在生成。可以考虑将该任务分成多个阶段。
完整的示例:
<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/maven-v4_0_0.xsd">
??? <modelVersion>4.0.0</modelVersion>
??? <groupId>net.zhuozhe</groupId>
??? <artifactId>fooWebApp</artifactId>
??? <packaging>war</packaging>
??? <version>1.0</version>
??? <name>fooWebApp</name>
??? <url>http://maven.apache.org</url>
??? <properties>
??<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
?</properties>
??? <dependencies>
????? <dependency>
??????? <groupId>commons-logging</groupId>
??????? <artifactId>commons-logging</artifactId>
?????? <version>1.1</version>
??? </dependency>
??? </dependencies>
??? <build>
??????? <finalName>fooWebApp</finalName>
?? <plugins>
?? ?<plugin>
????<groupId>org.apache.maven.plugins</groupId>
????<artifactId>maven-compiler-plugin</artifactId>
????<configuration>
?????<source>1.5</source>
?????<target>1.5</target>
?????<encoding>UTF-8</encoding>
????</configuration>
???</plugin>
???<plugin>
????<groupId>org.apache.maven.plugins</groupId>
????<artifactId>maven-resources-plugin</artifactId>
????<configuration>
?????<encoding>UTF-8</encoding>
????</configuration>
???</plugin>
??????????? <plugin>
??????????????? <groupId>org.apache.maven.plugins</groupId>
??????????????? <artifactId>maven-jar-plugin</artifactId>
????<configuration>
?????<encoding>UTF-8</encoding>
????</configuration>
??????????????? <executions>
??????????????????? <execution>
??????????????????????? <phase>package</phase>
??????????????????????? <goals>
??????????????????????????? <goal>jar</goal>
??????????????????????? </goals>
??????????????????????? <configuration>
??????????????????????????? <classesDirectory>target/classes</classesDirectory>
??????????????????????????? <finalName>fooWebApp</finalName>
??????????????????????????? <outputDirectory>target/fooWebApp/WEB-INF/lib</outputDirectory>
??????????????????????? </configuration>
??????????????????? </execution>
??????????????? </executions>
??????????? </plugin>
???????????
????????? <plugin>
??????????????? <artifactId>maven-resources-plugin</artifactId>
??????????????? <version>2.4.1</version>
????<configuration>
?????<encoding>UTF-8</encoding>
????</configuration>
??????????????? <executions>
??????????????????? <execution>
??????????????????????? <id>copy-resources</id>
??????????????????????? <phase>generate-sources</phase>
??????????????????????? <goals>
??????????????????????????? <goal>copy-resources</goal>
??????????????????????? </goals>
??????????????????????? <configuration>
??????????????????????????? <outputDirectory>
??????????????????????????????? src/main/webapp/WEB-INF/lib
??????????????????????????? </outputDirectory>
??????????????????????????? <resources>
??????????????????????????????? <resource>
??????????????????????????????????? <directory>
??????????????????????????????????????? target/jar
??????????????????????????????????? </directory>
??????????????????????????????????? <filtering>true</filtering>
??????????????????????????????? </resource>
??????????????????????????? </resources>
??????????????????????? </configuration>
??????????????????? </execution>
??????????????? </executions>
??????????? </plugin>
???????????
??</plugins>
??? </build>
</project>
