Maven连接Hive：java.lang.ClassNotFoundException: org.apache.hadoop.io.Writable

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将原来的项目挪到Maven后，启动正常，但跟Hive交互时报错：

严重: Servlet.service() for servlet [appServlet] in context with path [/paper] threw exception [Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/io/Writable] with root causejava.lang.ClassNotFoundException: org.apache.hadoop.io.Writable    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)    at org.apache.hadoop.hive.jdbc.HiveStatement.executeQuery(HiveStatement.java:198)    at org.apache.hadoop.hive.jdbc.HiveStatement.execute(HiveStatement.java:132)    at org.apache.hadoop.hive.jdbc.HiveConnection.configureConnection(HiveConnection.java:132)    at org.apache.hadoop.hive.jdbc.HiveConnection.<init>(HiveConnection.java:122)    at org.apache.hadoop.hive.jdbc.HiveDriver.connect(HiveDriver.java:106)    at java.sql.DriverManager.getConnection(Unknown Source)    at java.sql.DriverManager.getConnection(Unknown Source)    ......

在配置文件pom.xml中加入代码片

<dependency>    <groupId>org.apache.hadoop</groupId>    <artifactId>hadoop-common</artifactId>    <version>2.6.0</version>    <exclusions>       <exclusion>          <groupId>jdk.tools</groupId>          <artifactId>jdk.tools</artifactId>        </exclusion>        <exclusion>            <groupId>tomcat</groupId>            <artifactId>jasper-runtime</artifactId>        </exclusion>        <exclusion>            <groupId>tomcat</groupId>            <artifactId>jasper-compiler</artifactId>        </exclusion>    </exclusions></dependency>

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