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service
鎴栬�呬竴涓柟娉曪紝
鍓嶈皟鐢ㄤ竴涓柟娉曪紝
鎴栬�呭湪鏂规硶鍚庤皟鐢ㄤ竴涓柟娉?/p>
锛屾瘮濡傚姩鎬佷唬鐞嗗氨鏄嫤鎴櫒鐨勭畝鍗曞疄鐜帮紝杩囨护鍣ㄦ槸
鍦?/p>
java
web
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request,response
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缃竴浜涘弬鏁帮紝鐒跺悗鍐嶄紶鍏?/p>
servlet
鎴栬�?/p>
struts
鐨?/p>
action
杩涜涓氬姟閫昏緫锛屾瘮濡?/p>
杩囨护鎺夐潪娉?/p>
url
锛堜笉鏄?/p>
login.do
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,
鎴?/p>
鑰呭湪浼犲叆
servlet
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struts
鐨?/p>
action
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闈炴硶瀛楃銆?/p>
鎷︽埅鍣ㄤ笌杩囨护鍣ㄧ殑鍖哄埆锛?/p>
1
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java
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2
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servlet
瀹瑰櫒锛岃�屾嫤鎴櫒涓嶄緷璧栦笌
servlet
瀹瑰櫒
3
銆?/p>
鎷︽埅鍣ㄥ彧鑳藉
action
璇锋眰璧蜂綔鐢紝
鑰岃繃婊ゅ櫒鍒欏彲浠ュ鍑犱箮鎵�鏈夌殑璇锋眰璧?/p>
浣滅敤
4
銆佹嫤鎴櫒鍙互璁块棶
action
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5
銆?/p>
鍦?/p>
action
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鎷︽埅鍣ㄥ彲浠ュ娆¤璋冪敤锛?/p>
鑰岃繃婊ゅ櫒鍙兘鍦ㄥ鍣?/p>
鍒濆鍖栨椂琚皟鐢ㄤ竴娆?/p>
杩囨护鍣?/p>
涔熷氨鏄啓涓�涓嚜宸辩殑绫?/p>
,
璁╄繖涓被瀹炵幇浜?/p>
Filter
杩欎釜鎺ュ彛
,
杩欎釜鎺ュ彛閲屾湁涓?/p>
涓柟娉?/p>
銆?/p>
init()
锛?/p>
doFilter()
锛?/p>
destroy()
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doFilter()
杩涜鎿嶄綔
,
浣犲彲浠?/p>
鍦ㄨ繖涓柟娉曢噷鍐欎綘鎯宠繘琛岀殑鎿嶄綔
.
鍐欏畬杩欎簺涔嬪悗
,
灏辨槸鍦?/p>
web.xml
閲岀殑閰嶇疆浜?/p>
<filter>
<filter-name>myFilter</filter-name>
<filter-class>
鍖呭悕
+
瀹炵幇
Filter
鎺ュ彛鐨勭被
</filter-class>
</filter>
<filter-mapping>
<filter-name>myFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
鍦?/p>
<url-pattern>
閲岄潰璁剧疆浜?/p>
/*
涔嬪悗
,
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