修改web.xml后Tomcat无法启动

Question

在写完过滤器后配置web.xml，重启的时候发现无法启动Tomcat，然后删掉部署过滤器的那部分代码之后又能启动了，为什么呢？部署过滤器的那部分代码如下：<filter>
  <filter-name>SimpleFilter</filter-name> 
  <filter-class>org.sam.SimpleFilter</filter-class> 
- <init-param>
  <param-name>name</param-name> 
  <param-value>sam</param-value> 
  </init-param>
  </filter>
- <filter-mapping>
  <filter-name>name</filter-name> 
  <url-pattern>/*</url-pattern> 
  </filter-mapping>

Answer 1

- <init-param>
- <filter-mapping>明显多了两个杠

Answer 2

  <param-name>name</param-name> 
  <param-value>sam</param-value> 
这设编码吧
<param-name>encoding</param-name>
<param-value>GBK</param-value><filter-name>name</filter-name> 
这得同一样吧
 <filter-name>SimpleFilter</filter-name> 

Answer 3

<filter>
  <filter-name>SimpleFilter</filter-name> 
  
  </filter>
 <filter-mapping>
  <filter-name>name</filter-name> 
 
  </filter-mapping>
这两个<filter-name></filter-name>里面的内容要一样

Answer 4

<filter>
  <filter-name>SimpleFilter</filter-name>  
   
  </filter>
 <filter-mapping>
  <filter-name>name</filter-name>  
 
  </filter-mapping>
这两个<filter-name></filter-name>里面的内容要一样

Answer 5

同3、6L，<filter>和<filter-mapping>
<filter-name>值要一样

Answer 6

<filter-mapping>
  <filter-name>name</filter-name>
这里错了，改成<filter-name>SimpleFilter</filter-name>