maven 如何依赖工程项目里面的 jar 包

<!--自定义查询组件的jar包-->
        <dependency>
            <groupId>com.yule</groupId>
            <artifactId>querydb</artifactId>
            <version>1.0-SNAPSHOT</version>
            <scope>system</scope>
            <systemPath>${project.basedir}/src/main/webapp/WEB-INF/lib/querydb-1.0-SNAPSHOT.jar</systemPath>
        </dependency>

                <!--引用工程jar包-->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-dependency-plugin</artifactId>
                    <version>2.10</version>
                    <executions>
                        <execution>
                            <id>copy-dependencies</id>
                            <phase>compile</phase>
                            <goals>
                                <goal>copy-dependencies</goal>
                            </goals>
                            <configuration>
                                <outputDirectory>${project.basedir}/WebContent/WEB-INF/lib</outputDirectory>
                                <includeScope>system</includeScope>
                            </configuration>
                        </execution>
                    </executions>
                </plugin>