hadoop-common包依赖了servlet-api, jasper-runtime等可能与当前环境冲突的jar包,由于这些都是通过依赖关系链产生的关系,所以非常不容易被察觉。
- <dependency>
- <groupId>org.apache.hadoop</groupId>
- <artifactId>hadoop-common</artifactId>
- <version>2.2.0</version>
- <exclusions>
- <exclusion>
- <artifactId>servlet-api</artifactId>
- <groupId>javax.servlet</groupId>
- </exclusion>
- <exclusion>
- <artifactId>jasper-compiler</artifactId>
- <groupId>tomcat</groupId>
- </exclusion>
- <exclusion>
- <artifactId>jasper-runtime</artifactId>
- <groupId>tomcat</groupId>
- </exclusion>
- <exclusion>
- <artifactId>jsp-api</artifactId>
- <groupId>javax.servlet.jsp</groupId>
- </exclusion>
- </exclusions>
- </dependency>
- <dependency>
- <groupId>org.apache.hadoop</groupId>
- <artifactId>hadoop-hdfs</artifactId>
- <version>2.2.0</version>
- <exclusions>
- <exclusion>
- <artifactId>servlet-api</artifactId>
- <groupId>javax.servlet</groupId>
- </exclusion>
- </exclusions>
- </dependency>