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out  Ïò¿Í»§¶ËÊä³öÊý¾Ý print() println() flush() clear() isAutoFlush() getBufferSize()   close() …………
request Ïò¿Í»§¶ËÇëÇóÊý¾Ý
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response ·â×°ÁËjsp²úÉúµÄÏìÓ¦£¬È»ºó±»·¢Ë͵½¿Í»§¶ËÒÔÏìÓ¦¿Í»§µÄÇëÇó addCookie() sendRedirect() setContentType()
flushBuffer() getBufferSize() getOutputStream()
sendError() containsHeader()……………
application Ó¦ÓóÌÐò¼¶¶ÔÏ󣨼´Ó¦ÓóÌÐòÉÏÏÂÎÄ£©,¶à¸öÓû§Ö®¼ä¹²ÏíÐÅÏ¢ 
config ±íʾServletµÄÅäÖ㬵±Ò»¸öServlet³õʼ»¯Ê±£¬ÈÝÆ÷°ÑijЩÐÅϢͨ¹ý´Ë¶ÔÏ󴫵ݸøÕâ¸öServlet
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getSession() getServletContext() setAttribute()
removeAttribute() findAttribute() …………… 
session Óû§¼¶¶ÔÏó£¬ÓÃÀ´±£´æÃ¿¸öÓû§µÄÐÅÏ¢£¬ÒÔ±ã¸ú×Ùÿ¸öÓû§µÄ²Ù×÷״̬ͨ¹ý <%@ page session ="false" %>¸ÃÒ³Ãæ½ûÖ¹»á»° getAttribute() getId()   getAttributeNames() getCreateTime() getMaxInactiveInterval()
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exception ·´Ó³ÔËÐеÄÒì³£Ö»ÓÐÔÚpageÖ¸ÁîÖÐÖ¸¶¨isErrorPage = "true"ÊôÐÔ£¬²Å¿ÉÒÔʹÓÃÕâ¸ö¶ÔÏó¡£ getMessage()…&h


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