鍐欏湪鏈€鍓嶇
1.SpringAOP涓叡鏈夊叚绉嶉€氱煡绫诲瀷,鍙鎴戜滑鑷畾涔変竴涓被瀹炵幇瀵瑰簲鐨勬帴鍙ｏ紝瀹冧滑鍏ㄩ兘鏄痮rg.springframework.aop鍖呬腑鐨勩€?br />
2.AOP鐨勮繛鎺ョ偣鍙互鏄柟娉曡皟鐢ㄣ€佹柟娉曡皟鐢ㄦ湰韬€佺被鍒濆鍖栥€佸璞″疄渚嬪寲鏃讹紝浣嗘槸SpringAOP涓叏鏄柟娉曡皟鐢紝鏇寸畝鍗曪紝涔熸渶瀹炵敤
閫氱煡鍚嶇О
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鍓嶇疆閫氱煡 org.springframework.aop.MethodBeforeAdvice 鍚庣疆杩斿洖閫氱煡 org.springframework.aop.AfterReturningAdvice 鍚庣疆閫氱煡 org.springframework.aop.AfterAdvice 鐜粫閫氱煡 org.springframework.aop.MethodInterceptor 寮傚父閫氱煡 org.springframework.aop.ThrowsAdvice 寮曞叆閫氱煡 org.springframework.aop.IntroductionInterceptor
鍐欎竴涓叕鍏辩被锛岀敤浜庣洰鏍囧璞?/p>
public class Person { private String name; public boolean saySomething(String something){ System.out.println("Pereson绫讳腑璇翠簡涓€鍙ワ細"+something);return true;//榛樿杩斿洖true } public String getName() { return name; } public void setName(String name) { this.name = name; }}
涓€銆佸垱寤哄墠缃€氱煡(涔熷氨鏄洰鏍囨柟娉曡皟鐢ㄥ墠鎵ц)
鍓嶇疆閫氱煡鍙互淇敼浼犻€掔粰鏂规硶鐨勫弬鏁帮紝骞朵笖鍙互閫氳繃鎶涘嚭寮傚父鏉ラ樆姝㈡柟娉曠殑鎵ц锛屽彲浠ョ敤鍓嶇疆閫氱煡瀹炵幇鐢ㄦ埛鐧诲綍鐨勯獙璇侊紝SpringSecurity灏辨槸杩欎箞鍋氱殑
1.渚嬪瓙锛氬湪涓€涓柟娉曟墽琛屽墠灏嗗寘鍚柟娉曞悕绉扮殑娑堟伅鍐欏叆鍒版帶鍒跺彴涓?骞朵笖灏嗕紶鍏ョ殑鍙傛暟淇敼涓嬨€傦紙鏂囩珷涓啓鐨勫唴瀹规瘮杈冨皬锛屽ぇ澶氭暟鍦ㄤ唬鐮佷腑鏈夋敞閲婏紝澶у鍙互涓嬭浇浠ｇ爜鏌ョ湅锛?/p>
/** * 鍓嶇疆閫氱煡绫? */public class BeforeAdvice implements MethodBeforeAdvice { @Override public void before(Method method, Object[] objects, @Nullable Object o) throws Throwable { //绗竴涓弬鏁版槸鐩爣鏂规硶瀵硅薄锛岀浜屼釜鏄弬鏁?绗笁涓槸鍋氫负璋冪敤鐩爣鐨刼bject(杩欐槸personr瀹炰緥) //鎵撳嵃鏂规硶鍚? System.out.println("瑕佹墽琛岀殑鏂规硶鏄細"+method.getName()); //淇敼鍙傛暟涓簂yn4ever objects[0]="lyn4ever";//鎴戜滑淇敼鎴愪负浜唋yn4ever,鎵€浠ユ墦鍗板嚭鏉ョ殑灏辨槸lyn4ever锛岃€屼笉鏄痾hangsan } public static void main(String[] args) { Person person = new Person(); ProxyFactory pf =new ProxyFactory(); pf.addAdvice(new BeforeAdvice()); pf.setTarget(person); Person proxy = (Person) pf.getProxy(); //鎴戣繖閲屼紶鐨勫弬鏁版槸zhangsan,鐞嗚涓婂畠搴旇鎵撳嵃鍑烘潵zhangsan proxy.saySomething("zhangsan"); }}
娌℃瘺鐥咃紝鏈潵鎴戣緭鍏ョ殑鏄痾hangsan锛屽湪aop涓皢鍙傛暟鏀逛负浜唋yn4ever,杩欐牱灏卞畬缇庣殑鏇挎崲浜嗐€?/p>
浜屻€佸悗缃繑鍥為€氱煡
鏄湪杩炴帴鐐癸紙鏂规硶璋冪敤锛夎繑鍥炲悗鎵ц锛岃繖鏄剧劧涓嶈兘鍍忎笂杈归偅鏍蜂慨鏀瑰弬鏁帮紝涔熶笉鑳戒慨鏀硅繑鍥炲€笺€備絾鏄彲浠ユ姏鍑哄彲浠ュ彂閫佸埌鍫嗘爤鐨勫紓甯革紝鍚屾牱涔熷彲浠ヨ皟鐢ㄥ叾浠栨柟娉曘€?br />
/** * 鍚庣疆杩斿洖閫氱煡 */public class AfterReturnAdvice implements AfterReturningAdvice { @Override public void afterReturning(@Nullable Object o, Method method, Object[] objects, @Nullable Object o1) throws Throwable { /* 鍙傛暟鍜屽墠缃€氱煡鏄竴鏍风殑 杩欎釜鏄湪杩斿洖涔嬪悗璋冪敤锛屽洜姝わ紝person涓殑saySomething浼氬厛鎵撳嵃锛屾垜浠湪杩欓噷淇敼鐨勫弬鏁颁笉璧蜂綔浠讳綍浣滅敤 */ System.out.println("璋冪敤鐨勬柟娉曟槸:"+method.getName()+"杩欏彞鏄湪saySomething涔嬪悗");//杩欏彞鏄湪saySomething涔嬪悗 objects[0]="lyn4ever";//杩欏彞鍙互淇弬鏁帮紝浣嗘槸涔嬪墠鐨勬柟娉曞凡缁忔墽琛岃繃浜嗭紝鎵€浠ヤ笉璧蜂换浣曚綔鐢? System.out.println("鎴戜滑淇敼浜嗗弬鏁颁负:"+objects[0]+"浣嗘槸娌℃湁浠讳綍鐢?);//杩欐椂鍊欒繖涓弬鏁板苟涓嶄細浼犲埌person.saysomething(),鍥犱负宸茬粡璋冪敤杩囦簡 } public static void main(String[] args) { Person person = new Person(); ProxyFactory pf = new ProxyFactory(); pf.addAdvice(new AfterReturnAdvice());//娉ㄦ剰淇敼杩欎釜涓哄綋鍓嶇被涓殑閫氱煡绫? pf.setTarget(person); Person proxy = (Person) pf.getProxy(); proxy.saySomething("zhangsan"); }}
涓夈€佺幆缁曢€氱煡
杩欎汉鏈€濂界悊瑙ｄ簡锛屽氨鏄湪鏂规硶璋冪敤鍓嶅悗閮藉彲浠ユ墽琛屼唬鐮併€傜湅璧锋潵鍍忔槸鍓嶇疆鍚庡悗缃殑闆嗗悎锛屼絾鏄畠鍙互淇敼鏂规硶鐨勮繑鍥炲€硷紝鍥犱负瀹冨疄鐜扮殑invoke鏂规硶鐨勮繑鍥炲€兼槸Object,鎵€浠ユ垜浠氨鍙互淇敼锛岃€屽墠缃€氱煡鐨勮繑鍥炴槸void锛屾墍浠ユ病娉曚慨鏀圭殑銆傜敋鑷充互鑷充簬鎴戜滑鍙互涓嶈皟鐢ㄧ洰鏍囧璞′腑鐨勮繛鎺ョ偣鏂规硶锛屾垜浠畬鍏ㄤ慨鏀硅繖涓柟娉曠殑鍏ㄩ儴浠ｇ爜銆?/p>
public class MyMethodInterceptor implements MethodInterceptor { @Override public Object invoke(MethodInvocation invocation) throws Throwable { return null; }}
铏界劧杩欎釜invoke()鏂规硶涓苟娌℃湁鎻愪緵鍍忎箣鍓嶇殑閭ｄ簺鍙傛暟锛屼絾鏄繖涓€涓猧nvocation瀹炰緥鍙互寰楀埌
浠ｇ爜绀轰緥
/** * 鐜粫閫氱煡 */public class MyMethodInterceptor implements MethodInterceptor { @Override public Object invoke(MethodInvocation invocation) throws Throwable { //鍦ㄨ繖涓猧nvoation涓湁涓€鍒囨垜浠兂瑕佺殑鏂规硶鐩稿叧 System.out.println("绫诲悕鏄?"+invocation.getThis().getClass().getName()); System.out.println("鐩爣鏂规硶鏄?"+invocation.getMethod().getName()); Object[] arguments = invocation.getArguments();//杩欎釜灏辨槸鍙傛暟 System.out.println("绗竴涓弬鏁?鏄?"+arguments[0]); //鎴戜滑淇敼绗竴涓弬鏁颁负lyn4ever arguments[0]="lyn4ever"; invocation.proceed();//鎵ц鐩爣鏂规硶 System.out.println("杩欎釜鏄湪涔嬪悗鎵ц鐨?); return false;//淇敼杩斿洖鍊? } public static void main(String[] args) { Person person = new Person(); ProxyFactory pf = new ProxyFactory(); pf.addAdvice(new MyMethodInterceptor());//娉ㄦ剰淇敼杩欎釜涓哄綋鍓嶇被涓殑閫氱煡绫? pf.setTarget(person); Person proxy = (Person) pf.getProxy(); boolean flag = proxy.saySomething("zhangsan"); System.out.println(flag);//鏂规硶鏈潵鏄杩斿洖true鐨? }}
鍙互鐪嬪埌锛屾垜浠慨鏀逛簡鐩爣鏂规硶杩斿洖鐨勫€笺€?/p>
鏈枃demo宸叉彁浜よ嚦github
鎬荤粨
浠ヤ笂灏辨槸杩欑瘒鏂囩珷鐨勫叏閮ㄥ唴瀹逛簡锛屽笇鏈涙湰鏂囩殑鍐呭瀵瑰ぇ瀹剁殑瀛︿範鎴栬€呭伐浣滃叿鏈変竴瀹氱殑鍙傝€冨涔犱环鍊硷紝璋㈣阿澶у瀵规垜浠殑鏀寔銆?/p>
鏈枃鏍囬: 濡備綍浣跨敤Spring AOP鐨勯€氱煡绫诲瀷鍙婂垱寤洪€氱煡
鏈枃鍦板潃: http://www.xuebuyuan.com/ruanjian/java/293582.html
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