ServletRequest接口
Object getAttribute(String name)获取属性值
void setAttribute(String name, Object o)设置属性
void setCharacterEncoding(String env)设置请求编码
String getParameter(String name)获取值
String[] getParameterValues(String name)获取一组值
RequestDispatcher getRequestDispatcher(String path)转发器
ServletContext getServletContext()获取上下文对象
HttpServletRequest接口
Cookie[] getCookies()获取Cookie
HttpSession getSession()获取会话
String getRequestURI()获取请求的URI
String getServletPath()获取Servlet路径
String getHeader(String name)根据标头名称获取值
Enumeration<String> getHeaderNames()获取素有标头名称
