1. ServeltConfig
2. HttpSession
3. ServletContext
4. HttpServlet
5. servlet
6. GinericServlet
7. PrintWriter
8. ServletResponse
9. ServletRequest
10. jsp九大内置对象
    1. response
    2. out
    3. request
    4. pageContext
    5. session
    6. application
    7. exception
    8. config
    9. page
11. PageContext
12. JspWriter
13. Exception
14. 自定义Filter
    1. FilterConfig
    2. FilterChain
    3. ServletRequest
    4. ServletResponse
15. Filter
16. jNDI
    1. InitialContext
    2. NamingEnumertion
    3. tomcat全局JNDI
    4. tomcat局部JNDI
    5. 数据库连接池
       1. DBCP数据源配置
       2. C3p0数据源配置
17. 自定义监听器
    1. ServletContextAttributeListener
    2. ServletContextListener
    3. HttpSessionListener
    4. HttpSessionAttributeListener
    5. HttpSessionActivationListener
    6. ServletRequestListener
    7. ServletRequestAttributeListener
    8. HttpSessionBindingListener
18. Context
19. XML处理
    1. DOM
       1. 解析XML
          1. DocumentBuliderFactory
          2. DocumentBulider
          3. Document
          4. NodeList
             1. Element
       2. 创建XML
          1. TransformerFactory
          2. Transformer
          3. DOMSource
          4. StreamResult
          5. Document
             1. createElement
             2. setAttribute(String attribute,String value);
             3. createAttribute
             4. createTextNode
    2. SAX
       1. SAXParserFactory
       2. SAXParser
       3. DefaultHander
          1. startDocument
          2. endDocument
          3. startElement
          4. endElement
          5. characters
    3. JDOM
       1. SAXBulider
       2. Document
    4. Simple
    5. DOM4J
       1. SAXReader
       2. Document
20. Node
21. Attr
22. NamedNodeMap
23. Element
24. Element
25. AJAX
26. getServletConfig()
27. HttpServletRequest
28. HttpServletResponse
29. getServletContext()