当你的项目是war项目而且你的项目又有些类提供给其他项目使用，那么你就需要：maven配置同时打包war和jar包
1、首先添加在pom.xml中添加插件 maven-jar-plugin ， 使得 在调用命令mvn package install 或者 mvn package deploy 先生成 jar包。或者使用mvn package生成jar包。该插件生成的架包会放在工程的target文件夹下。
2、然后配置maven-install-plugin 插件， 使得在eclipse中执行maven install时, 同时生成jar和war到本地仓库。
3、再配置org.apache.maven.plugins插件， 使得在eclipse中执行deploy 时, 同时，生成jar和war到远程仓库。
pom.xml配置
<artifactId>itxwServer</artifactId>
<packaging>war</packaging>
<build>
<plugins>
<!-- package jar on package -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- install jar to local repository -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-install-plugin</artifactId>
<executions>
<execution>
<phase>install</phase>
<goals>
<goal>install-file</goal>
</goals>
<configuration>
<packaging>jar</packaging>
<artifactId>${project.artifactId}</artifactId>
<groupId>${project.groupId}</groupId>
<version>${project.version}</version>
<file>${project.build.directory}/${project.artifactId}-${project.version}.jar</file>
<!--<file>${project.build.directory}/${project.artifactId}.jar</file>-->
</configuration>
</execution>
</executions>
</plugin>
<!-- deploy jar to remote repository -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-deploy-plugin</artifactId>
<executions>
<execution>
<phase>deploy</phase>
<goals>
<goal>deploy-file</goal>
</goals>
<configuration>
<packaging>jar</packaging>
<generatePom>true</generatePom>
<url>${project.distributionManagement.repository.url}</url>
<artifactId>${project.artifactId}</artifactId>
<groupId>${project.groupId}</groupId>
<version>${project.version}</version>
<file>${project.build.directory}/${project.artifactId}.jar</file>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
<finalName>itxwServer</finalName>
</build>