概述

servlet-api 4.0.1版本

常用方法

HttpServlet

protected void doGet(HttpServletRequest req, HttpServletResponse resp) {...}

protected void doPost(HttpServletRequest req, HttpServletResponse resp) {...}

protected void doPut(HttpServletRequest req, HttpServletResponse resp) {...}

protected void doDelete(HttpServletRequest req, HttpServletResponse resp) {...}

protected void service(HttpServletRequest req, HttpServletResponse resp) {...} // 負責呼叫上面四種方法
 

GenericServlet實現類

public void init() throws ServletException {}

public void destroy() {}

public String getInitParameter(String name) {...}

public Enumeration<String> getInitParameterNames() {}

public ServletConfig getServletConfig() {...} // 獲取ServletConfig物件

public String getServletInfo() {...}

public ServletContext getServletContext() {...} // 獲取ServletContext物件

public String getServletName() {...}

public abstract void service(ServletRequest req, ServletResponse res) throws ServletException, IOException;
 

ServletConfig介面

servlet容器使用的servlet配置物件，用於在初始化期間將資訊傳遞給servlet。

public String getServletName(); // 介面

public ServletContext getServletContext(); // 介面

public String getInitParameter(String name); // 介面

public Enumeration<String> getInitParameterNames(); // 介面

Servlet介面

public void init(ServletConfig config) throws ServletException; // 介面

public void destroy(); // 介面

public ServletConfig getServletConfig(); // 介面

public String getServletInfo(); // 介面

public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException; // 介面