两把利斧解决maven的类包冲突问题 Spring,企业应用 Java ITeye论坛

两把利斧解决maven的类包冲突问题 - Spring,企业应用 - Java - ITeye论坛

通过idea的maven依赖分析将不需要的依赖exclude掉





打开maven的pom.xml，在某个<dependency>中通过右键菜单：maven->show dependency 打开分析的图形化页面，如下所示：







通过菜单的exclude即解决这个间接依赖。



通过这个依赖树，我们还可以看到Junit还通过“unitils-spring”的依赖间接载入了，如下所示：







从上面的依赖树中，我们可以看出junit通过unitils-spring的unitils-database间接引入了，由于我的项目都不需要数据库的测试，因此，可以把unitils-database项整个exclude掉。



下面，是处理完成后的pom.xml关键片断：

    <dependency>
        <groupId>org.unitils</groupId>
        <artifactId>unitils-testng</artifactId>
        <version>${unitils.version}</version>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <artifactId>junit</artifactId>
                <groupId>junit</groupId>
            </exclusion>
        </exclusions>

    </dependency>

    <dependency>
        <groupId>org.unitils</groupId>
        <artifactId>unitils-spring</artifactId>
        <version>${unitils.version}</version>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <artifactId>unitils-database</artifactId>
                <groupId>org.unitils</groupId>
            </exclusion>
        </exclusions>
    </dependency>
</dependencies>

        <dependency>
            <groupId>org.unitils</groupId>
            <artifactId>unitils-testng</artifactId>
            <version>${unitils.version}</version>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <artifactId>junit</artifactId>
                    <groupId>junit</groupId>
                </exclusion>
            </exclusions>

        </dependency>

        <dependency>
            <groupId>org.unitils</groupId>
            <artifactId>unitils-spring</artifactId>
            <version>${unitils.version}</version>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <artifactId>unitils-database</artifactId>
                    <groupId>org.unitils</groupId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

这样，被间接隐式引入的junit就被我们exclude在外了。





有时通过idea的依赖分析工具产生的树不够全，这时就需要使用mvn dependency:tree来查看依赖树了。



通过mvn dependency:tree 查看依赖树

引用

mvn dependency:tree

以下是使用这个工具产生的依赖树：

引用

E:\01workspace\chenxh\09research\rop\rop>mvn dependency:tree

[WARNING]

[WARNING] Some problems were encountered while building the effective settings

[WARNING] 'pluginRepositories.pluginRepository.id' must not be 'local', this identifier is reserved for the local re

tory, using it for other repositories will corrupt your repository metadata. @ C:\Users\Administrator\.m2\settings.x

[WARNING]

[INFO] Scanning for projects...

[INFO]

[INFO] ------------------------------------------------------------------------

[INFO] Building rop 1.0-SNAPSHOT

[INFO] ------------------------------------------------------------------------

[INFO]

[INFO] --- maven-dependency-plugin:2.1:tree (default-cli) @ rop ---

[INFO] com.rop:rop:jar:1.0-SNAPSHOT

[INFO] +- javax.validation:validation-api:jar:1.0.0.GA:compile

[INFO] +- org.hibernate:hibernate-validator:jar:4.2.0.Final:compile

[INFO] +- org.codehaus.jackson:jackson-core-asl:jar:1.9.5:compile

[INFO] +- org.codehaus.jackson:jackson-mapper-asl:jar:1.9.5:compile

[INFO] +- org.codehaus.jackson:jackson-jaxrs:jar:1.9.5:compile

[INFO] +- org.codehaus.jackson:jackson-xc:jar:1.9.5:compile

[INFO] +- com.fasterxml.jackson.dataformat:jackson-dataformat-xml:jar:2.0.0-RC2:compile

[INFO] |  +- com.fasterxml.jackson.core:jackson-core:jar:2.0.0-RC2:compile

[INFO] |  +- com.fasterxml.jackson.core:jackson-annotations:jar:2.0.0-RC2:compile

[INFO] |  +- com.fasterxml.jackson.core:jackson-databind:jar:2.0.0-RC2:compile

[INFO] |  +- com.fasterxml.jackson.module:jackson-module-jaxb-annotations:jar:2.0.0-RC2:compile

[INFO] |  \- org.codehaus.woodstox:stax2-api:jar:3.1.1:compile

[INFO] |     \- javax.xml.stream:stax-api:jar:1.0-2:compile

[INFO] +- org.slf4j:slf4j-api:jar:1.6.1:compile

[INFO] +- org.slf4j:slf4j-log4j12:jar:1.6.1:compile

[INFO] +- log4j:log4j:jar:1.2.16:compile

[INFO] +- org.springframework:spring-core:jar:3.1.1.RELEASE:compile

[INFO] |  +- org.springframework:spring-asm:jar:3.1.1.RELEASE:compile

[INFO] |  \- commons-logging:commons-logging:jar:1.1.1:compile

[INFO] +- org.springframework:spring-context:jar:3.1.1.RELEASE:compile

[INFO] |  +- org.springframework:spring-aop:jar:3.1.1.RELEASE:compile

[INFO] |  +- org.springframework:spring-beans:jar:3.1.1.RELEASE:compile

[INFO] |  \- org.springframework:spring-expression:jar:3.1.1.RELEASE:compile

[INFO] +- org.springframework:spring-context-support:jar:3.1.1.RELEASE:compile

[INFO] +- org.springframework:spring-web:jar:3.1.1.RELEASE:compile

[INFO] |  \- aopalliance:aopalliance:jar:1.0:compile

[INFO] +- org.springframework:spring-test:jar:3.1.1.RELEASE:compile

[INFO] +- org.springframework:spring-webmvc:jar:3.1.1.RELEASE:compile

[INFO] +- org.testng:testng:jar:6.3:test

[INFO] |  +- org.beanshell:bsh:jar:2.0b4:test

[INFO] |  +- com.beust:jcommander:jar:1.12:test

[INFO] |  \- org.yaml:snakeyaml:jar:1.6:test

[INFO] +- org.mockito:mockito-all:jar:1.8.5:test

[INFO] +- javax.servlet:servlet-api:jar:2.5:provided

[INFO] +- org.unitils:unitils-core:jar:3.3:test

[INFO] |  +- commons-lang:commons-lang:jar:2.3:test

[INFO] |  +- commons-collections:commons-collections:jar:3.2:test

[INFO] |  \- ognl:ognl:jar:2.6.9:test

[INFO] +- org.unitils:unitils-testng:jar:3.3:test

[INFO] |  \- org.testng:testng:jar:jdk15:5.8:test

[INFO] |     \- junit:junit:jar:3.8.1:test

[INFO] \- org.unitils:unitils-spring:jar:3.3:test

[INFO]    +- org.springframework:spring-tx:jar:2.5.2:test

[INFO]    \- org.unitils:unitils-database:jar:3.3:test

[INFO]       +- org.unitils:unitils-dbmaintainer:jar:3.3:test

[INFO]       |  +- org.hibernate:hibernate:jar:3.2.5.ga:test

[INFO]       |  |  +- net.sf.ehcache:ehcache:jar:1.2.3:test

[INFO]       |  |  +- asm:asm-attrs:jar:1.5.3:test

[INFO]       |  |  +- dom4j:dom4j:jar:1.6.1:test

[INFO]       |  |  +- antlr:antlr:jar:2.7.6:test

[INFO]       |  |  +- cglib:cglib:jar:2.1_3:test

[INFO]       |  |  \- asm:asm:jar:1.5.3:test

[INFO]       |  \- org.dbunit:dbunit:jar:2.2.2:test

[INFO]       |     +- junit-addons:junit-addons:jar:1.4:test

[INFO]       |     |  +- xerces:xercesImpl:jar:2.6.2:test

[INFO]       |     |  \- xerces:xmlParserAPIs:jar:2.6.2:test

[INFO]       |     +- poi:poi:jar:2.5.1-final-20040804:test

[INFO]       |     \- org.slf4j:slf4j-nop:jar:1.4.3:test

[INFO]       +- commons-dbcp:commons-dbcp:jar:1.2.2:test

[INFO]       |  \- commons-pool:commons-pool:jar:1.3:test

[INFO]       \- org.springframework:spring-jdbc:jar:2.5.2:test

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 8.250s

[INFO] Finished at: Fri Jun 08 09:08:09 CST 2012

[INFO] Final Memory: 7M/245M

[INFO] ------------------------------------------------------------------------

我原来一个使用idea分析不出的隐式依赖就是通用mvn dependency:tree找到的。

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