在maven依赖项中包含一个不同版本的库完全破坏了我的构建

所以我有

 <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-jaxrs</artifactId>
            <version>1.8.3</version>
            <scope>${defaultScope}</scope>
        </dependency>

org.codehaus.jackson
杰克逊·贾克斯
1.8.3
${defaultScope}

我包括了这个

   <dependency>
            <groupId>org.springframework.social</groupId>
            <artifactId>spring-social-web</artifactId>
            <version>1.0.2.RELEASE</version>
        </dependency>

org.springframework.social
spring社交网站
1.0.2.1发布

它本身就包括这个

 <dependency>
      <groupId>org.codehaus.jackson</groupId>
      <artifactId>jackson-mapper-asl</artifactId>
      <version>1.9.3</version>
      <scope>test</scope>
    </dependency>

org.codehaus.jackson
杰克逊地图绘制者
1.9.3
测试

这导致没有为jsonwrapper找到任何类

我更新了我的jackson dependency的原始版本，使之与spring social included版本保持一致，现在可以正常工作了

---

这看起来相当脆弱/不友好，我应该做些什么来避免这些问题吗？

您可以使用

mvn dependency:tree -Dverbose

在你的情况下，它叫道：

+- org.codehaus.jackson:jackson-jaxrs:jar:1.8.3:compile
|  +- org.codehaus.jackson:jackson-core-asl:jar:1.8.3:compile
|  \- org.codehaus.jackson:jackson-mapper-asl:jar:1.8.3:compile
|     \- (org.codehaus.jackson:jackson-core-asl:jar:1.8.3:compile - omitted for duplicate)
\- org.springframework.social:spring-social-web:jar:1.0.2.RELEASE:compile
   +- org.springframework:spring-webmvc:jar:3.1.0.RELEASE:compile
   |  +- org.springframework:spring-asm:jar:3.1.0.RELEASE:compile
   |  +- org.springframework:spring-beans:jar:3.1.0.RELEASE:compile
   |  |  \- (org.springframework:spring-core:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  +- org.springframework:spring-context:jar:3.1.0.RELEASE:compile
   |  |  +- org.springframework:spring-aop:jar:3.1.0.RELEASE:compile
   |  |  |  +- (aopalliance:aopalliance:jar:1.0:compile - omitted for duplicate)
   |  |  |  +- (org.springframework:spring-asm:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  |  |  +- (org.springframework:spring-beans:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  |  |  \- (org.springframework:spring-core:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  |  +- (org.springframework:spring-beans:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  |  +- (org.springframework:spring-core:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  |  +- (org.springframework:spring-expression:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  |  \- (org.springframework:spring-asm:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  +- org.springframework:spring-context-support:jar:3.1.0.RELEASE:compile
   |  |  +- (org.springframework:spring-beans:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  |  +- (org.springframework:spring-context:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  |  \- (org.springframework:spring-core:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  +- org.springframework:spring-core:jar:3.1.0.RELEASE:compile
   |  |  +- (org.springframework:spring-asm:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  |  \- commons-logging:commons-logging:jar:1.1.1:compile
   |  +- org.springframework:spring-expression:jar:3.1.0.RELEASE:compile
   |  |  \- (org.springframework:spring-core:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  \- (org.springframework:spring-web:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   +- javax.inject:javax.inject:jar:1:compile
   +- org.springframework:spring-web:jar:3.1.0.RELEASE:compile
   |  +- aopalliance:aopalliance:jar:1.0:compile
   |  +- (org.springframework:spring-beans:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  +- (org.springframework:spring-context:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   |  \- (org.springframework:spring-core:jar:3.1.0.RELEASE:compile - omitted for duplicate)
   \- org.springframework.social:spring-social-core:jar:1.0.2.RELEASE:compile
      \- (org.springframework:spring-web:jar:3.1.0.RELEASE:compile - omitted for duplicate)

---

据我所知，并不是

spring社交网站

包含

jackson mapper asl

您可以使用

部分告诉Maven忽略可传递依赖项：

<dependency>
    <groupId>org.springframework.social</groupId>
    <artifactId>spring-social-web</artifactId>
    <version>1.0.2.RELEASE</version>
    <exclusions>
        <exclusion>
            <artifactId>org.codehaus.jackson</artifactId>
            <groupId>jackson-mapper-asl</groupId>
        </exclusion>
    </exclusions>
</dependency>

org.springframework.social
spring社交网站
1.0.2.1发布
org.codehaus.jackson
杰克逊地图绘制者

有了这个定义，Maven将只使用您先前定义的依赖项（1.8.3版本）。但请注意，有时这可能会导致其他问题，例如SpringSocialWeb可能会使用1.8.3版本中不存在的功能