第九天：听课笔记

1.URIEncoding="GBK"

html 椤甸潰涓?charset="GBK"

GET涔辩爜聽

UTF-8 涓€閮ㄥ垎杞崲 涓€閮ㄥ垎娌¤浆鎹?

鐢变簬UTF-8 鍚戝浗闄呭寲鎻愪氦鐨勬椂鍊?鏈変竴浜涙眽瀛楁病鏈?GBK鐨勬眽瀛楀涓€浜?

鐗逛緥鎯呭喌锛?褰撲紶閫掔殑涓枃瓒呭嚭浜哢TF-8鎴栬€匞B2312鑳借瘑鍒殑鑼冨洿锛岄渶瑕侀€氳繃GBK鏉ヨВ鍐?瀵逛簬GET璇锋眰鐨勫彟涓€绉嶅鐞嗘柟寮忥紝鍙互閫氳繃server.xml鏂囦欢涓瑿onnector鍏冪礌鍐?閰嶇疆涓€涓睘鎬RIEncoding="GBK"

鍑虹幇涔辩爜鏃惰皟璇曪細鍏圫ystem.out.println() 涓嶈鍏坥ut.println()

2.閲嶅畾鍚?鍜?杞彂

閲嶅畾鍚戯細鍦板潃鏍忔湁鏀瑰彉锛涗袱娆¤姹傦紝鑷繁杩樺緱璇锋眰锛?鍒板璺筹紱涓绘満

杞彂锛氬湴鍧€鏍忔病鏀瑰彉锛涗竴娆¤姹傦紝鏈嶅姟绔负浣犲仛杞彂锛宖orward灏唕eq鍜宺esp鍚戜笅浼犻€掞紱

鍙兘鍦╳eb搴旂敤绋嬪簭鍐呰烦杞紱铏氭嫙璺緞(鐩稿浜巙rl-pattern)

浠€涔堟椂鍊欑敤锛氶渶涓嶉渶瑕佷紶閫抮eq鍜宺esp 瑕佽烦杞埌鍝?

3.setContentType("text/html")聽聽 text/plain

4.ServletContext 浠ｈ〃鏁翠釜搴旂敤绋嬪簭锛屽氨鏄偅涓猵roject

琚暣涓猄ervlet鎵€鍏变韩聽聽聽 application

鍩熉?鑳藉瑁呬笢瑗?---> 闆嗗悎

setAttribute(str,obj) 寮鸿浆 閫氬父寰€閲岄潰杞璞★紝鏇村父鐢ㄧ殑鏄湪閲岄潰杞泦鍚?浠庢暟鎹簱涓彇鍑鸿褰?getAttribute(str)

getAttributeNames()

getInitParameter(name)

琚墍鏈塖ervlet鎵€鍏变韩聽 鏈夌偣鍍弒tatic 闈欐€佺殑

getServletContextName聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 ---> display-name

getRealPath(path锛壜犅?鑾峰彇鐨勬槸鏈嶅姟鍣ㄧ殑鐪熷疄璺緞

鎬濊矾锛氬湪ServletContext涓粺涓€璁剧疆缂栫爜 initParameter聽 --> 閰嶇疆鏂囦欢 鎵╁睍鎬ч潪甯稿ソ

鎵€鏈夌殑Servlet閮界粺涓€璁剧疆涓€涓紪鐮?

5.鑷姩鎷嗙 瑁呯

Integer i = null

int j = i+5;聽聽聽聽 //int j = i.intValue()+5聽聽 NullPointerException

娉涘瀷 锛?瑙ｅ喅瀹夊叏闂聽聽聽聽 ClassCastedException

鎸囧畾鍙兘鏀句粈涔埪?灏嗚繍琛屾椂鐨勯棶棰樿浆鍒扮紪璇戦棶棰?

Collections.synchronizedList()聽 杩斿洖涓€涓嚎绋嬪畨鍏ㄧ殑闆嗗悎

StringBuilder

6.灞炴€?涓?鍙傛暟

灞炴€э細attribute

鍙傛暟锛歱arameter

7. Java娉ㄩ噴

12.鎸囦护鍏冪礌

<%@ 鎸囦护鍚嶇О 灞炴€?鈥滃睘鎬у€尖€?>

page聽:autoFlush聽 buffer聽 language

聽 errorPage浠ｇ爜鍑虹幇寮傚父鍚庣殑鏄剧ず椤甸潰锛氬皯鐢?瑕佸寮哄仴澹€у垽鏂?鍑洪敊浜嗚澧炲己鐢ㄦ埛浣撻獙

聽 isErrorPage="true" 灏卞彲浠ヤ娇鐢╡xception鍐呯疆瀵硅薄

聽 session鏄惁鏀寔浼氳瘽

聽 isThreadSafe

聽 import 瀵煎寘 鏃犲垎鍙?聽 contentType --> pageEncoding聽 pageEncoding鏄湰鍦板瓨鍌?聽 contentType 涓?pageEncoding 涓€鑷?聽

include :

taglib聽 :prefix uri

闈欐€佸寘鍚?

<%include file="XXX"%>

鍏堟妸婧愪唬鐮佸悎涓轰竴浜嗭紝鍐嶇紪璇?

鍔ㄦ€佸寘鍚細

<jsp:include page="yyy"/>

鍒嗗埆缂栬瘧 灏嗙粨鏋滃悎涓轰竴

缁熶竴缂栫爜

寮曞叆鐨勬椂鍊欏敖閲忓紩鍏sp 涓嶅紩鍏tml jsp鍙互璁剧疆缂栫爜

澹版槑锛?<%!

聽 int i = 0;聽聽聽 //鎴愬憳鍙橀噺聽 --> 绾跨▼鑲畾涓嶅畨鍏?聽 public void run(){};聽聽聽聽聽聽聽聽 //鏂规硶

%>

13.<%= %> 琛ㄨ揪寮?鏃犲垎鍙?

14.<% %>聽 鑴氭湰鐗囨

15.琛ㄦ牸鎵撳嵃 html <% %>聽 <%= %> 鍒嗗壊

鍏堟墦鏁翠綋<table><tr><td>

鐒跺悗鍥炲埌<tr><td>灏卞垎鍓?> <%涔嬬被鐨?

16.鍔ㄤ綔鍏冪礌