maven中的传递依赖和传递依赖的解除
例如创建三个maven工程A B C
pom文件分别为
A
1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 2 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 3 <modelVersion>4.0.0</modelVersion> 4 5 <groupId>org.lonecloud.A</groupId> 6 <artifactId>A</artifactId> 7 <version>0.0.1-SNAPSHOT</version> 8 <packaging>jar</packaging> 9 10 <name>A</name> 11 <url>http://maven.apache.org</url> 12 13 <properties> 14 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 15 </properties> 16 17 <dependencies> 18 <dependency> 19 <groupId>junit</groupId> 20 <artifactId>junit</artifactId> 21 <version>3.8.1</version> 22 <scope>test</scope> 23 </dependency> 24 </dependencies> 25 </project>
B
1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 2 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 3 <modelVersion>4.0.0</modelVersion> 4 5 <groupId>org.lonecloud.B</groupId> 6 <artifactId>B</artifactId> 7 <version>0.0.1-SNAPSHOT</version> 8 <packaging>jar</packaging> 9 10 <name>B</name> 11 <url>http://maven.apache.org</url> 12 13 <properties> 14 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 15 </properties> 16 17 <dependencies> 18 <dependency> 19 <groupId>junit</groupId> 20 <artifactId>junit</artifactId> 21 <version>3.8.1</version> 22 <scope>test</scope> 23 </dependency> 24 <!-- B依赖于A --> 25 <dependency> 26 <groupId>org.lonecloud.A</groupId> 27 <artifactId>A</artifactId> 28 <version>0.0.1-SNAPSHOT</version> 29 </dependency> 30 </dependencies> 31 </project>
C
1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 2 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 3 <modelVersion>4.0.0</modelVersion> 4 5 <groupId>org.lonecloud.C</groupId> 6 <artifactId>C</artifactId> 7 <version>0.0.1-SNAPSHOT</version> 8 <packaging>jar</packaging> 9 10 <name>C</name> 11 <url>http://maven.apache.org</url> 12 13 <properties> 14 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 15 </properties> 16 17 <dependencies> 18 <dependency> 19 <groupId>junit</groupId> 20 <artifactId>junit</artifactId> 21 <version>3.8.1</version> 22 <scope>test</scope> 23 </dependency> 24 <!--C依赖于B但是会将A的依赖传递进来 --> 25 <dependency> 26 <groupId>org.lonecloud.B</groupId> 27 <artifactId>B</artifactId> 28 <version>0.0.1-SNAPSHOT</version> 29 </dependency> 30 </dependencies> 31 </project>
当我只需要B的依赖而不需要A的依赖的时候可以使用
<!-- 此标签的作用是可以将B的传递依赖关系A不传递给C --> <exclusions> <exclusion> <groupId>org.lonecloud.A</groupId> <artifactId>A</artifactId> </exclusion> </exclusions>
排除对A的依赖
