servlet

常见接口

servlet方法有:

  void destory()

  ServletConfig getServletConfig()

  void init(ServletConfig config)

  void service (ServletRequest req,ServletResponse res)

ServletConfig是servlet容器初始化servlet时传给init()方法的参数。

RequestDispatcher(请求转发)

void forward(ServletRequest req,ServletResponse res)

void include(ServletRequest req,ServletResponse res)

ServletRequest(an object to provide client request information to a servlet)

object getAttribute(String name)

void setAttribute(String name,object o)

String getParameter(String name)

RequestDispatcher getRequestDispacher(String path)

ServletContext getServletContext()

SerlvetResponse(an object to assist a servlet in sending a response to the client. )

PrintWriter getWriter()

void setCharacterEncoding()

ServletContext(a set of methods that a servlet uses to communicate with its servlet container)

void addListener(String className)

常见类

GenericServlet(实现servlet接口)(a generic, protocol-independent servlet)

 方法与servlet基本一致

Httpservlet(an abstract class to be subclassed to create an HTTP servlet suitable for a Web site)

void doGet(HttpServletRequest req,HttpServletResponse res)

void doPost(HttpServletRequest req,HttpServletResponse res)

封装了init和destoty方法,在底层servlet中实现

 

posted @ 2017-02-22 23:48  unbelievableme  阅读(134)  评论(0编辑  收藏  举报