tomcat相关问题

tomcat遇到的问以及解决方案

一、Maven集成Tomcat插件

使用tomcat导入servlet-api座标
<plugin>   
  <groupId>org.apache.tomcat.maven</groupId>   
  <artifactId>tomcat7-maven-plugin</artifactId>   
  <version>2.2</version>   
  <configuration>      
    <hostName>localhost</hostName>        <!--   Default: localhost -->  
    <port>8080</port>                     <!-- 启动端口 Default:8080 --> 
    <path>/</path>   <!-- 访问应用路径  Default: /${project.artifactId}-->  
    <uriEncoding>UTF-8</uriEncoding>      <!-- uri编码 Default: ISO-8859-1 -->
  </configuration>
</plugin>

1. 使用插件遇到的问题 

   Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of org/apache/catalina/loader/WebappClassLoader) previously initiated loading for a different type with name "javax/servlet/ServletContext"

2. 解决方案： 也有可能是jar包冲突导致的原因

   <dependency>
               <groupId>javax.servlet</groupId>
               <artifactId>servlet-api</artifactId>
               <version>2.3</version>
               <scope>provided</scope><!--加入该标签-->
           </dependency>