maven依赖冲突

一、短路优先

1、基本原则

A->B->C->X（jar）

A->B->X（jar）

这里会选择第2条路径

2、实例

nage依赖于bge，shanji依赖于nage

bge：

< 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/xsd/maven-4.0.0.xsd" ; >

   < modelVersion > 4.0.0 </ modelVersion >

 

   < groupId > com.hongxing </ groupId >

   < artifactId > hongxing - bge </ artifactId >

   < version > 0.0.1-SNAPSHOT </ version >

   < packaging > jar </ packaging >

 

   < name > hongxing - bge </ name >

   < url > http://maven.apache.org </ url >

 

   < properties >

     < project.build.sourceEncoding > UTF-8 </ project.build.sourceEncoding >

   </ properties >

 

   < dependencies >

     < dependency >

       < groupId > junit </ groupId >

       < artifactId > junit </ artifactId >

       < version > 3.8.1 </ version >

       < scope > test </ scope >

     </ dependency >

     < dependency >

        < groupId > commons- io </ groupId >

        < artifactId > commons- io </ artifactId >

        < version > 2.4 </ version >

        </ dependency >

   </ dependencies >

</ project >

nage：

< 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/xsd/maven-4.0.0.xsd" ; >

   < modelVersion > 4.0.0 </ modelVersion >

 

   < groupId > com.hongxing </ groupId >

   < artifactId > hongxing - nage </ artifactId >

   < version > 0.0.1-SNAPSHOT </ version >

   < packaging > jar </ packaging >

 

   < name > hongxing - nage </ name >

   < url > http://maven.apache.org </ url >

 

   < properties >

     < project.build.sourceEncoding > UTF-8 </ project.build.sourceEncoding >

   </ properties >

 

   < dependencies >

     < dependency >

       < groupId > junit </ groupId >

       < artifactId > junit </ artifactId >

       < version > 3.8.1 </ version >

       < scope > test </ scope >

     </ dependency >

     < dependency >

        < groupId > commons- io </ groupId >

        < artifactId > commons- io </ artifactId >

        < version > 2.0 </ version >

        </ dependency >

      < dependency >

               < groupId > com.hongxing </ groupId >

               < artifactId > hongxing - bge </ artifactId >

               < version > 0.0.1-SNAPSHOT </ version >

     </ dependency >

   </ dependencies >

</ project >

shanji：

< 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/xsd/maven-4.0.0.xsd" ; >

   < modelVersion > 4.0.0 </ modelVersion >

 

   < groupId > com.hongxing </ groupId >

   < artifactId > hongxing - shanji </ artifactId >

   < version > 0.0.1-SNAPSHOT </ version >

   < packaging > jar </ packaging >

 

   < name > hongxing - shanji </ name >

   < url > http://maven.apache.org </ url >

 

   < properties >

     < project.build.sourceEncoding > UTF-8 </ project.build.sourceEncoding >

   </ properties >

 

   < dependencies >

     < dependency >

       < groupId > junit </ groupId >

       < artifactId > junit </ artifactId >

       < version > 3.8.1 </ version >

       < scope > test </ scope >

     </ dependency >

     < dependency >

        < groupId > com.hongxing </ groupId >

        < artifactId > hongxing - nage </ artifactId >

        < version > 0.0.1-SNAPSHOT </ version >

     </ dependency >

   </ dependencies >

</ project >

此时shanji依赖于2.0版本

19.png

 

二 路径相同，先声明先优先

shanji依赖于bge，shanji依赖于nage，bge和nage没有关系

bge：

< 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/xsd/maven-4.0.0.xsd" ; >

   < modelVersion > 4.0.0 </ modelVersion >

 

   < groupId > com.hongxing </ groupId >

   < artifactId > hongxing - bge </ artifactId >

   < version > 0.0.1-SNAPSHOT </ version >

   < packaging > jar </ packaging >

 

   < name > hongxing - bge </ name >

   < url > http://maven.apache.org </ url >

 

   < properties >

     < project.build.sourceEncoding > UTF-8 </ project.build.sourceEncoding >

   </ properties >

 

   < dependencies >

     < dependency >

       < groupId > junit </ groupId >

       < artifactId > junit </ artifactId >

       < version > 3.8.1 </ version >

       < scope > test </ scope >

     </ dependency >

     < dependency >

        < groupId > commons- io </ groupId >

        < artifactId > commons- io </ artifactId >

        < version > 2.4 </ version >

        </ dependency >

   </ dependencies >

</ project >

nage：

< 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/xsd/maven-4.0.0.xsd" ; >

   < modelVersion > 4.0.0 </ modelVersion >

 

   < groupId > com.hongxing </ groupId >

   < artifactId > hongxing - nage </ artifactId >

   < version > 0.0.1-SNAPSHOT </ version >

   < packaging > jar </ packaging >

 

   < name > hongxing - nage </ name >

   < url > http://maven.apache.org </ url >

 

   < properties >

     < project.build.sourceEncoding > UTF-8 </ project.build.sourceEncoding >

   </ properties >

 

   < dependencies >

     < dependency >

       < groupId > junit </ groupId >

       < artifactId > junit </ artifactId >

       < version > 3.8.1 </ version >

       < scope > test </ scope >

     </ dependency >

     < dependency >

        < groupId > commons- io </ groupId >

        < artifactId > commons- io </ artifactId >

        < version > 2.0 </ version >

        </ dependency >

   </ dependencies >

</ project >

shanji：

< 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/xsd/maven-4.0.0.xsd" ; >

   < modelVersion > 4.0.0 </ modelVersion >

 

   < groupId > com.hongxing </ groupId >

   < artifactId > hongxing - shanji </ artifactId >

   < version > 0.0.1-SNAPSHOT </ version >

   < packaging > jar </ packaging >

 

   < name > hongxing - shanji </ name >

   < url > http://maven.apache.org </ url >

 

   < properties >

     < project.build.sourceEncoding > UTF-8 </ project.build.sourceEncoding >

   </ properties >

 

   < dependencies >

     < dependency >

       < groupId > junit </ groupId >

       < artifactId > junit </ artifactId >

       < version > 3.8.1 </ version >

       < scope > test </ scope >

     </ dependency >

     < dependency >

               < groupId > com.hongxing </ groupId >

               < artifactId > hongxing - bge </ artifactId >

               < version > 0.0.1-SNAPSHOT </ version >

        </ dependency >

     < dependency >

        < groupId > com.hongxing </ groupId >

               < artifactId > hongxing - nage </ artifactId >

               < version > 0.0.1-SNAPSHOT </ version >

         </ dependency >

       

   </ dependencies >

</ project >

此时shanji依赖于2.4版本