Question

我是maven的新手，我收到了这个错误：

SEVERE: SLF4J: Class path contains multiple SLF4J bindings. 
SEVERE: SLF4J: Found binding in [jar:file:/.../WEB-INF/lib/slf4j-jdk14-1.5.8.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SEVERE: SLF4J: Found binding in [jar:file:/.../WEB-INF/lib/slf4j-log4j12-1.6.4.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SEVERE: SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SEVERE: SLF4J: The requested version 1.5.8 by your slf4j binding is not compatible with [1.6]
SEVERE: SLF4J: See http://www.slf4j.org/codes.html#version_mismatch for further details.
SEVERE: Exception while preparing the app
SEVERE: org.slf4j.helpers.MessageFormatter.format(Ljava/lang/String;Ljava/lang/Object;)Ljava/lang/String;

所以我在想的是我需要摆脱这个slf4j-jdk14-1.5.8.jar。是否有可能或有任何其他解决方案。这是我在pom文件中的依赖项：

<dependencies>
    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-web-api</artifactId>
        <version>6.0</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <version>2.1</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.persistence</groupId>
        <artifactId>persistence-api</artifactId>
        <version>1.0-rev-1</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>3.0.5.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>3.0.5.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
        <version>3.0.5.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-core</artifactId>
        <version>3.0.5.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-config</artifactId>
        <version>3.0.5.RELEASE</version>
    </dependency>            
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-web</artifactId>
        <version>3.0.5.RELEASE</version>
    </dependency> 
    <dependency>
        <groupId>aopalliance</groupId>
        <artifactId>aopalliance</artifactId>
        <version>1.0</version>
    </dependency>
    <dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib</artifactId>
        <version>2.2</version>
    </dependency>
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.6.10</version>
    </dependency>
    <dependency>
        <groupId>org.skywaysoftware</groupId>
        <artifactId>skyway-spring-utils</artifactId>
        <version>7.1.3</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>3.6.10.Final</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>3.6.10.Final</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.22</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
    </dependency>
    <dependency>
        <groupId>com.atomikos</groupId>
        <artifactId>transactions-jta</artifactId>
        <version>3.7.0</version>
    </dependency>
    <dependency>
        <groupId>commons-dbcp</groupId>
        <artifactId>commons-dbcp</artifactId>
        <version>1.2.2</version>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.16</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.6.1</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.6.4</version>
    </dependency>

</dependencies>

提前致谢。

Answer 1

运行mvn dependency:tree，看看是什么吸引来的。

然后按照How to use dependency exclusions大致排除它：

<dependency>
  <groupId>org.foo.bar</groupId>
  <artifactId>offending-artifact</artifactId>
  <version>1.0</version>
  <exclusions>
    <exclusion>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-jdk14</artifactId>
    </exclusion>
  </exclusions> 
</dependency>

Answer 2

来自http://maven.apache.org/guides/introduction/introduction-to-optional-and-excludes-dependencies.html

<project>
...
 <dependencies>
<dependency>
  <groupId>sample.ProjectA</groupId>
  <artifactId>Project-A</artifactId>
  <version>1.0</version>
  <scope>compile</scope>
  <exclusions>
    <exclusion>  <!-- declare the exclusion here -->
      <groupId>sample.ProjectB</groupId>
      <artifactId>Project-B</artifactId>
    </exclusion>
  </exclusions> 
</dependency>
</dependencies>
</project>

如何从maven中排除依赖项

2 个答案: