Java浣撶郴緇撴瀯
Java鐨勪綋緋葷粨鏋勫涓嬪浘鎵紺猴紝棣栧厛Java鐨勬簮浠ｇ爜Java鏂囦歡鐢辯紪璇戝櫒緙栬瘧鎴怞ava鐨勪簩榪涘埗瀛楄妭鐮乧lass鏂囦歡錛岀劧鍚巆lass鏂囦歡鐢? Java铏氭嫙鏈轟腑鐨勭被瑁呰澆鍣ㄨ繘琛屽姞杞斤紝鍚屾椂綾昏杞藉櫒榪樹細(xì)鍔犺澆Java鐨勫師濮?nbsp;API Class鏂囦歡錛岀被鍔犺澆鍣ㄤ富瑕佽礋璐ｅ姞杞姐佽繛鎺ュ拰鍒濆鍖栬繖浜沜lass 鏂囦歡浠ュ悗錛屽氨浜ょ粰铏氭嫙鏈轟腑鐨勬墽琛屽紩鎿庤繍琛岋紝鎵ц寮曟搸灝哻lass鏂囦歡涓殑Java鎸囦護(hù)瑙ｉ噴鎴愬叿浣撶殑鏈湴鎿嶄綔緋葷粺鏂規(guī)硶鏉ユ墽琛?鑰屽畨鍏ㄧ鐞嗗櫒灝嗗湪鎵ц榪囩▼涓牴 鎹緗殑瀹夊叏絳栫暐鎺у埗鎸囦護(hù)瀵瑰閮ㄨ祫婧愮殑璁塊棶銆?br />
Java鐨勬墽琛屾柟寮忎笉鏄紪璇戞墽琛岃屾槸瑙ｉ噴鎵ц錛屼笉鍚屽鉤鍙頒笂闈㈢浉鍚岀殑婧愪唬鐮佺紪璇戞垚絎﹀悎Java瑙勮寖鐨勭浉鍚岀殑浜岃繘鍒跺瓧鑺傜爜錛岀劧鍚庡啀浜ょ粰鏀寔鍚勮嚜騫沖彴鐨勮櫄鎷? 鏈哄幓瑙ｉ噴鎵ц錛?鍏堢紪璇戯紝鍚庤В閲婏紝鍐嶆墽琛?涓夋璧扮殑鏂瑰紡浣垮緱Java瀹炵幇浜?涓嬈＄紪鍐欙紝鍒板榪愯"錛屽鏋淛ava搴旂敤浣跨敤鐨勬槸100錛呮爣鍑? Java API騫朵笖娌℃湁鐩存帴璋冪敤鏈湴鏂規(guī)硶錛岄偅灝卞彲浠ヤ笉鍔犱慨鏀瑰湴榪愮敤鍦ㄥ縐嶅鉤鍙頒笂錛岃繖鏍風(fēng)殑騫沖彴鏃犲叧鎬т嬌寰楀湪寮傛瀯鐨勭綉緇滅幆澧冩垨鑰呭祵鍏ュ紡鏂歸潰鐨勫簲鐢ㄦ洿鏂逛究鍜岀幇 瀹炪侸ava鐨勭綉緇滅Щ鍔ㄦу甫鏉ヤ簡(jiǎn)涓縐嶅叏鏂扮殑杞歡妯″紡錛屽湪鍒嗗竷寮忓鐞嗘ā寮忕殑鍩虹涔嬩笂錛屽彲浠ュ皢杞歡鍜屾暟鎹氳繃緗戠粶浼犻佸埌瀹㈡埛绔幓錛岃繖鏍風(fēng)‘淇濅簡(jiǎn)瀹㈡埛绔湁蹇呭鐨勮蔣 浠舵潵嫻忚鍜屾搷綰甸氳繃緗戠粶浼犺緭鐨勬暟鎹紝Java浣撶郴緇撴瀯鏀寔鎶婂崟涓鐨勬墽琛屾枃浠跺垏鍓叉垚灝忕殑浜岃繘鍒跺瓧鑺傜爜鏂囦歡Class鏂囦歡錛岃岃繖浜涙枃浠跺彲浠ユ寜鐓у簲鐢ㄧ殑闇瑕佸姩鎬? 榪炴帴銆佸姩鎬佹墿灞曘侸ava浣撶郴緇撴瀯瀵瑰畨鍏ㄦх殑鏀寔涓昏鏄氳繃Java璇█鏈韓瀹夊叏鎬с佽櫄鎷熸満鐨勭被鍔犺澆鍣ㄥ拰瀹夊叏綆＄悊鍣ㄤ互鍙?qiáng)Java鎻愪緵鐨勫畨鍏ˋPI鍑犱釜鏂歸潰 鏉ュ疄鐜幫細(xì)闃叉鎭舵剰紼嬪簭鐨勬敾鍑伙紝紼嬪簭涓嶈兘鐮村潖鐢ㄦ埛璁＄畻鏈虹幆澧冿紱闃叉鍏ヤ鏡錛岀▼搴忎笉鑳借幏鍙栦富鏈烘垨鎵鍦ㄥ唴緗戠殑淇濆瘑淇℃伅錛涢壌鍒紝楠岃瘉紼嬪簭鎻愪緵鑰呭拰浣跨敤鑰呯殑韜喚錛涘姞 瀵嗭紝瀵逛紶杈撲氦鎹㈢殑鏁版嵁榪涜鍔犲瘑錛屾垨鑰呯粰鎸佷箙鍖栫殑鏁版嵁榪涜鍔犲瘑錛涢獙璇?瀵規(guī)搷浣滆緗鍒欏茍涓旇繘琛岄獙璇併?br />
Java淇℃伅瀹夊叏鐨勫繀瑕佹?br />
闅忕潃浜掕仈緗戝簲鐢ㄨ秺鏉ヨ秺騫挎硾錛屽茍涓斾簰鑱旂綉鍏舵湰韜嫭鐗圭殑璧勬簮鍏變韓鎬э紝鍥犳鑳藉鎸夌収鐢ㄦ埛闇姹傚強(qiáng)鏃跺噯紜幏寰椾俊鎭拰澶勭悊淇℃伅鐨勫簲鐢ㄥ鐢ㄦ埛鑰岃█灝辯浉褰撻噸瑕侊紝榪欎篃鏄? Java寰椾互榪呴熷彂灞曞拰琚箍娉涙帴鍙楃殑鍘熷洜銆備絾鍚屾椂緗戠粶涔熸彁渚涗簡(jiǎn)涓鏉℃敾鍑?yán)L帴鍏ヨ綆楁満鐨勬綔鍦ㄩ斿緞錛岀壒鍒槸褰撶敤鎴蜂笅杞界綉緇滆蔣浠跺湪鏈湴榪愯錛岃繖灝辮姹侸ava鑳藉 瀵圭梾姣?鏈ㄩ┈鐨勯棶棰樺姞浠ラ槻鑼冿紝瀵逛俊鎭互鍙?qiáng)鏈湴鐜杩涜淇濇姢銆傛瘮濡傛垜浠祻瑙堜竴涓綉欏電殑鏃跺欙紝緗戦〉涓婄殑Applet鍙兘浼?xì)鑷姩涓嬭浇迤堜笖杩愯锛岃岃繖涓? Applet瀹屽叏鏈夊彲鑳芥潵鑷笉鍙潬鐨勫湴鏂癸紝鍙堟垨鑰呮垜浠嬌鐢ㄩ氳繃JINI鏈嶅姟鏌ユ壘鍒扮殑緗戠粶涓婁笉鍙潬鐨勬湇鍔″璞℃潵鑾峰緱鏈嶅姟錛屽鏋滄病鏈塉ava浣撶郴緇撴瀯鎻愪緵鐨勫畨 鍏ㄦ満鍒訛紝榪欏氨寰堟湁鍙兘寮曞叆浜?jiǎn)涓涓鏈夋晫鎰忕殑紼嬪簭閫犳垚淇℃伅涓㈠け銆佽祫鏂欐硠瀵嗐佺浉淇′吉閫犳暟鎹拰淇敼鏈湴璁＄畻鏈哄畨鍏ㄨ緗瓑絳夊悗鏋滐紝甯︽潵鏈煡鐨勪弗閲嶅悗鏋溿?br />
Java璇█鏈韓瀹夊叏鎬?br />
Java璇█鐨勮璁¤呬滑鏄湪C++鐨勫熀紜涓婅璁″嚭鏉ava鐨勶紝鍥犳涓嶤++鐩告瘮瀹冪殑璇硶鏇村姞綆鍗曟竻鏅幫紝緇撴瀯銆佸崟鍏冦佽繍綆楃閲嶈澆銆佽櫄鎷熷熀紜綾葷瓑鍦? Java涓兘娌℃湁閲囩敤錛屽茍涓斿彇娑堜簡(jiǎn)澶氶噸緇ф壙鑰岄噰鐢ㄥ疄鐜板涓帴鍙ｇ殑鏂瑰紡銆傝繖鏍瘋兘闄嶄綆寮鍙戜漢鍛樼姱閿欒鐨勫嚑鐜囷紝甯姪浠栦滑鍐欏嚭鏇村畨鍏ㄧ殑浠ｇ爜銆?nbsp;
Java涓幓闄や簡(jiǎn)C++璇█涓殑浠や漢璐硅В銆佸鏄撳嚭閿欑殑"鎸囬拡"錛岀敤鍒楄〃銆佸爢銆佸搱甯岃〃絳夌粨鏋勬潵浠ｆ浛錛岄伩鍏嶄簡(jiǎn)浠諱綍涓嶅畨鍏ㄧ殑緇撴瀯銆侸ava涔熸病鏈夌儲(chǔ)寮曟牳鏌ョ殑 鏁扮粍璁塊棶錛屽洜涓鴻繖寰寰浼?xì)瀵艰嚧涓嶅畾鐨勩佷笉鍙嫻嬬殑紼嬪簭鎿嶄綔錛屽畠鎵鏈夌殑鏁扮粍璁塊棶閮藉繀欏誨厛媯(gè)鏌ユ槸鍚﹁秺鐣屻侸ava瑕佹眰鎵鏈夌殑鍙橀噺鍦ㄥ垵濮嬪寲浠ュ墠涓嶈兘浣跨敤錛屽浜庡熀鏈? 鏁版嵁綾誨瀷鍙橀噺閮戒細(xì)鑷姩鍦拌祴緇欐煇涓垵濮嬪鹼紝閬垮厤浜?jiǎn)鏈垵濮嬪寲鍙橀噺鑾峰彇鍐呭瓨淇℃伅銆傛墍鏈夎繖浜涢兘浣垮緱紼嬪簭涓嶈兘璁塊棶浠繪剰鐨勫唴瀛樺湴鍧錛屽浜庡唴瀛樹腑鐨勫疄浣撲俊鎭彧鑳介氳繃鏈夋潈 闄愮殑瀵硅薄榪涜璁塊棶錛岃屼笉浼?xì)鍑虹幇璞++閭ｆ牱鎶婄被鍨嬫寚閽堝己鍒惰漿鎹㈡垚鍐呭瓨鐨勬寚閽堬紝鐒跺悗閫氳繃鍐呭瓨鏌ユ壘鐨勬柟娉曟壘鍒扮鏈夌殑鍙橀噺銆?br />
Java鍒嗛厤鍐呭瓨瀵逛簬寮鍙戜漢鍛樻潵璇存槸閫忔槑鐨勶紝寮鍙戜漢鍛樹嬌鐢╪ew鏂規(guī)硶鏂板緩瀵硅薄,榪欐椂鍊欒櫄鎷熸満灝變細(xì)浠庡爢鍐呭瓨涓壘鍒板悎閫傜殑鍐呭瓨絀洪棿錛屽紑鍙戜漢鍛樹笉闇瑕佷篃涓嶈兘 澶熻繘琛屽共棰勩傝屽浜庡唴瀛樼殑鍥炴敹錛孞ava閬垮厤浜?jiǎn)寮鍙戜漢鍛樻槑紜共棰勫璞＄殑鍥炴敹錛屾瘮濡侰鐨刦ree鎴朇++鐨刣elete鍛戒護(hù)錛岄伩鍏嶄簡(jiǎn)寮鍙戜漢鍛樻棤鎰忛棿瀵瑰唴瀛樼殑 鐮村潖銆侸ava閲囩敤铏氭嫙鏈虹殑"鍨冨溇鍥炴敹"鏈哄埗鏉ュ疄鐜扮殑鍐呭瓨鑷姩綆＄悊錛岄噴鏀句笉鍐嶈浣跨敤鐨勫唴瀛樿祫婧愶紝鍐呭瓨鍥炴敹鍣ㄥ氨鍍忎竴鍙板瀮鍦炬敹闆嗚濺錛屼絾鏄拰鎴戜滑鍦ㄥぇ琛椾笂鐪嬪埌鐨? 鏀墮泦杞︼紝浠呬粎鏀墮泦澶у鏀懼湪鍨冨溇妗墮噷闈㈢殑鍨冨溇涓嶅悓鐨勬槸錛屽畠榪樿鍒頒綘瀹墮噷鍘誨府浣犳壘鍑洪偅浜涗笢瑗挎槸涓嶈鐢ㄧ殑鍨冨溇錛岀劧鍚庢妸榪欎簺涓滆タ鎷胯蛋錛屾渶鍚庤繕瑕佹暣鐞嗗閲岀殑絀洪棿錛岃吘 鍑烘渶澶х殑絀洪棿璁╀綘鏀炬柊涓滆タ銆侸ava鐨勫唴瀛樺洖鏀跺櫒鐩殑灝辨槸鎵懼埌涓嶅啀寮曠敤鐨勫璞★紝閲婃斁鍐呭瓨絀洪棿錛屽茍涓旈渶瑕佹暣鐞嗗唴瀛樼殑紕庣墖絀洪棿錛屽敖閲忛伩鍏嶅嚭鐜?鍐呭瓨涓嶈凍"鐨勬儏 鍐點(diǎn)?br />
瀵逛簬鍦ㄧ綉緇滀腑浜ゆ崲鐨勫簭鍒楀寲瀵硅薄寰堝鏄撳湪閲嶅緩瀵硅薄鐨勬椂鍊欒闂埌瀵硅薄鐨勭鏈変俊鎭紝榪欐椂鍊橨ava鎻愪緵浜?jiǎn)涓たU嶅姙娉曟潵淇濇姢淇℃伅錛屼竴縐嶅氨鏄噰鐢ㄧ粰鍙橀噺鍔犱笂 transient鍏抽敭瀛楃殑鏂規(guī)硶錛岃繖鏍峰璞″簭鍒楀寲鐨勬椂鍊欏氨涓嶄細(xì)璇誨啓璇ュ彉閲忥紝鍙︿竴縐嶅氨鏄湪瀹炵幇Externalizable鎺ュ彛鑰屼笉鏄? Serizlizable鎺ュ彛錛岃繖鏍峰璞″氨鍙兘閫氳繃writeExternal鍜宺eadExternal鏂規(guī)硶鏉ヤ繚瀛樺拰閲嶅緩錛屽叾浠栨柟娉曟棤娉曡繘琛屼簡(jiǎn)銆?nbsp;
浠ヤ笂榪欎簺閮芥槸Java璇█鏈韓瀵逛俊鎭畨鍏ㄦ彁渚涚殑鍩虹銆?br />
綾誨姞杞藉櫒
铏界劧鍚嶅瓧鍙被鍔犺澆鍣紝浣嗘槸瀹為檯涓奐ava铏氭嫙鏈轟腑鐨勭被鍔犺澆鍣ㄤ笉鍏夎璐熻矗鍔犺澆鑰屼笖瑕佽礋璐ｈ繛鎺ュ拰鍒濆鍖栧簲鐢ㄧ▼搴忛渶瑕佺敤鍒扮殑Java綾誨瀷銆傚姞杞藉氨鏄妸浜岃繘鍒? 褰㈠紡鐨勫瓧鑺傜爜璇誨叆铏氭嫙鏈轟腑錛岃岃繛鎺ュ氨鏄粰榪欎釜宸茬粡璇誨叆鐨勭被鍨嬪垎閰嶇被鍙橀噺鍐呭瓨浠ュ強(qiáng)鎶婄被鍨嬩腑鐢ㄥ埌甯擱噺姹犱腑鐨勭鍙瘋漿鎹負(fù)鐩存帴寮曠敤錛屾渶鍚庣殑鍒濆鍖栬繃紼嬪氨鏄祴緇欑被鍨? 鍙橀噺鍚堥傜殑鍒濆鍊箋?br />
綾誨姞杞藉櫒涓哄姞杞界殑綾繪彁渚涗簡(jiǎn)涓嶅悓鐨勫懡鍚嶇┖闂達(dá)紝緇熶竴婧愪唬鐮佺敓鎴愮殑瀛楄妭鐮佽鍔犺澆鍒板悓涓涓懡鍚嶇┖闂翠腑錛岀浉鍚屽懡鍚嶇┖闂翠笉鑳藉姞杞界被鍚嶇浉鍚岀殑綾伙紝鍚屼竴涓懡鍚嶇┖闂村唴鐨? 綾誨彲浠ョ洿鎺ヨ繘琛屼氦浜掞紝鑰屼笉鍚岀殑鍛藉悕絀洪棿鐨勭被鏄笉鑳戒氦浜掔殑錛岄櫎闈炴樉寮忓湴鎻愪緵浜?jiǎn)浜や簰鏈哄堄灱岄氳繃鍛藉悕絀洪棿鍜岀被鎴愬憳璁塊棶鏉冮檺鐨勮緗繚鎶や簡(jiǎn)琚俊浠葷殑綾昏竟鐣屻?br />
綾誨姞杞藉櫒鍒嗘垚浜?jiǎn)鍚姩绫诲姞铦插櫒銆佹爣鍑嗘墿灞曠被鍔犺澆鍣ㄣ佽礬寰勭被鍔犺澆鍣ㄥ拰緗戠粶綾誨姞杞藉櫒鍥涚銆傚惎鍔ㄧ被鍔犺澆鍣ㄤ粠鏈湴緋葷粺涓姞杞藉師濮嬬殑Java API綾伙紝鐢ㄦ潵鍚姩 Java铏氭嫙鏈猴紝鑰屽叾浠栦笁縐嶅姞杞藉櫒鏄湪榪愯鏃跺姞杞界敤鎴峰畾涔夌殑綾伙紝鏍囧噯鎵╁睍綾誨姞杞藉櫒鍔犺澆鐨勬槸涓嶅悓铏氭嫙鏈烘彁渚涘晢鎵╁睍鐨勬爣鍑咼ava綾伙紝鑰屽湪classpath 涓殑綾葷敱璺緞綾誨姞杞藉櫒鏉ュ姞杞斤紝緗戠粶綾誨姞杞藉櫒鍔犺澆閫氳繃緗戠粶涓嬭澆寰楀埌鐨勭被鏂囦歡錛屾瘡涓縐嶅姞杞藉櫒鍦ㄥ姞杞界被鐨勬椂鍊欓兘浼?xì)寰忕珛涓涓姞杞藉櫒瀹炰緥銆傜被鍔犺澆鍣ㄩ噰鐢ㄥ弻浜插媧鵑摼妯? 寮忥紙榪欎釜妯″紡寰堢被浼糋OF鍦ㄣ婅璁℃ā寮忋嬩竴涔︿腑鎻愬埌鐨勮矗浠婚摼妯″紡錛夐櫎浜?jiǎn)鍚姩绫诲姞铦插櫒浠ュ锛屾瘡涓c誨姞杞藉櫒閮芥湁鑷繁鐨?鍙屼翰"銆備竴涓被鍙互閫氳繃鏈変笁縐嶆柟娉曞畾涔? 鑷繁鐨勫弻浜詫細(xì)絎竴縐嶉氳繃寮曠敤錛屾瘮濡侫綾諱腑寮曠敤浜?jiǎn)B綾伙紙鍗矨鍜孊鏈夊叧鑱斿叧緋伙級(jí)錛岄偅涔圔綾葷殑鍔犺澆鍣ㄥ氨浼?xì)浣滀负A綾葷殑鍔犺澆鍣ㄧ殑"鍙屼翰"錛屾棭浜嶢綾誨姞杞斤紱絎簩縐嶄嬌鐢? loadClass鏂規(guī)硶鏉ヨ嚜瀹氫箟"鍙屼翰"錛岃繖鏃惰load鐨勭被鐨?鍙屼翰"鍗蟲湰韜繖涓被鍔犺澆鍣紱絎笁縐嶅湪娌℃湁閲囩敤鍓嶄袱縐嶇殑鎯呭喌涓嬩嬌鐢ㄧ殑榛樿鏂瑰紡錛岄粯璁ゆ妸鍚姩 綾誨姞杞藉櫒浣滀負(fù)"鍙屼翰"銆?br />
鍦ㄥ姞杞借繃紼嬩腑錛屽綋鍙戝嚭鍔犺澆璇鋒眰鐨勬椂鍊欙紝鍔犺澆鍣ㄩ鍏堣闂畠鐨?鍙屼翰"鈥曗曡礬寰勭被鍔犺澆鍣ㄢ曗曟潵鏌ユ壘騫跺姞杞借繖涓被錛岃岃繖涓姞杞藉櫒涔熷悜瀹冪殑"鍙屼翰"璇鋒眰鍔犺澆錛? 涓灞備竴灞傝姹備笂鍘伙紝鐩村埌鍚姩鍔犺澆鍣ㄨ幏寰楄姹傦紝鏉ユ煡鎵懼茍鍔犺澆榪欎釜綾伙紝濡傛灉榪欎釜綾繪病鏈夎鍔犺澆騫朵笖鏌ユ壘涓嶅埌錛岃繑鍥炵粨鏋滅粰瀹冪殑瀛愬姞杞藉櫒錛岀敱瀛愬姞杞藉櫒鍔犺澆錛岀洿鍒拌姹? 榪斿洖緇欏師鏉ョ殑鍔犺澆鍣紝榪欐椂榪樻病鏈夊姞杞芥垚鍔熺殑璇濓紝鐢辯綉緇滅被鍔犺澆鍣ㄨ瘯鍥句粠緗戠粶涓鎵懼茍涓嬭澆錛屽鏋滆繕涓嶆垚鍔熷皢鎶涘嚭NoClassDefFoundError寮? 甯搞?br />
榪欎釜榪囩▼淇濊瘉浜?jiǎn)鍚姩绫诲姞铦插櫒鍙互鎶㈠湪鏍囧噯鎵╁睍绫诲姞铦插櫒涔嬪墠鍔犺浇绫诲Q岃屾爣鍑嗘墿灞曠被鍔犺澆鍣ㄥ張鍙互鎶㈠湪璺緞綾誨姞杞藉櫒涔嬪墠鍔犺澆綾伙紝鏈鍚庢墠鐢辯綉緇滅被鍔犺澆鍣ㄥ姞杞姐? 姣斿搴旂敤琚瘯鍥懼姞杞戒竴涓甫鏈夋伓鎰忎唬鐮佺殑java.lang.String綾伙紝鍥犱負(fù)瀹冩湰鏉ユ槸Java API鐨勪竴閮ㄥ垎錛屽畠浠姞杞藉埌鐨勫懡鍚嶇┖闂村彲浠ュ緱鍒拌淇′換 綾葷殑鐗規(guī)畩璁塊棶鏉冮檺錛屼絾鏄敱浜庡惎鍔ㄧ被鍔犺澆鍣ㄦ槸鏈鏃╄鍔犺澆鐨勶紝鎵浠ava.lang.String鍙細(xì)琚惎鍔ㄧ被浠嶫ava鍘熷鐨凙PI涓姞杞斤紝鑰屽甫鏈夋伓鎰忎唬 鐮佺殑java.lang.String綾諱笉浼?xì)琚姞铦矘q涙潵錛岃繖鏍鋒湁鏁堢殑淇濇姢浜?jiǎn)琚俊鋼Q鐨勭被杈圭晫銆?br />
綾誨姞杞藉櫒涓繕鍖呮嫭浜?jiǎn)涓涓被鍨嬫鏌ョ殑鍔熻兘妯″潡錛屽畠璐熻矗淇濊瘉紼嬪簭鐨勫仴澹э紝瀹冨湪綾誨瀷鐨勭敓鍛藉懆鏈熶腑瑕佽繘琛屽洓嬈℃鏌ャ傜涓嬈℃鏌ユ槸鍦ㄥ姞杞界殑鏃跺欙紝涓昏媯(gè)鏌ヤ簩榪? 鍒跺瓧鑺傜爜鐨勭粨鏋勶紝棣栧厛鏍煎紡瑕佹弧瓚矹ava璇█瀹氫箟鐨勮鑼冿紝鐒跺悗瑕佷繚璇佸皢瑕佸姞杞界殑綾誨瓧鑺傜爜鏄竴緇勫悎娉曠殑Java鎸囦護(hù)銆傜浜屾媯(gè)鏌ユ槸鍦ㄨ繛鎺ョ殑鏃跺欙紝涓昏鏄被鍨? 鏁版嵁鐨勮涔夋鏌ワ紝淇濊瘉瀛楄妭鐮佸湪緙栬瘧鏃跺欓伒瀹堜簡(jiǎn)瑙勮寖錛屾瘮濡傚final綾諱笉浼?xì)娲剧敓鍑哄瓙绫诲Q屼篃涓嶄細(xì)閲嶈澆final鐨勬柟娉曪紱姣忎釜綾誨彧鏈変竴涓秴綾伙紱娌℃湁鎶婂熀鏈暟鎹? 綾誨瀷寮哄埗杞崲鎴愬叾浠栨暟鎹被鍨嬨傜涓夋媯(gè)鏌ヤ篃鏄湪榪炴帴鐨勬椂鍊欙紝鍏蟲敞浜庢寚浠ょ殑緇撴瀯錛屼繚璇佹寚浠ょ殑鎿嶄綔鏁扮被鍨嬪拰鍊兼紜紝鎿嶄綔鏁板爢鏍堜笉浼?xì)鍑虹庮C笂婧㈠嚭鎴栬呬笅婧㈠嚭銆傛渶鍚? 涓嬈℃鏌ュ湪鍔ㄦ佽繛鎺ョ殑鏃跺欙紝涓昏媯(gè)鏌ョ被鍨嬩腑鐨勭鍙峰紩鐢ㄨ瑙ｆ瀽鏃舵槸鍚︽紜備互涓婄殑闂閮戒細(xì)浜х敓鎭舵剰鐨勮涓烘墍浠ュ繀欏誨湪榪愯鍓嶈繘琛屾鏌ワ紝鑰屼竴閮ㄥ垎媯(gè)鏌ュ伐浣滀細(xì)鍦ㄨ櫄 鎷熸満榪愯瀛楄妭鐮佺殑鏃跺欐鏌ワ紝姣斿鏁扮粍瓚婄晫錛屽璞＄被鍨嬬殑杞崲絳夌瓑錛屼竴鏃︽鏌ュ彂鐜頒簡(jiǎn)闂灝變細(xì)鎶涘嚭寮傚父錛屼嬌寰楃▼搴忎笉琚墽琛屻?nbsp;
綾誨姞杞藉櫒閬垮厤浜?jiǎn)鍑虹幇鏌愪簺鎬鏈夋晫鎰忕殑浜虹紪鍐欒嚜宸辯殑Java綾伙紝鑰岃繖浜涚被鏂規(guī)硶涓惈鏈夎煩杞埌鏂規(guī)硶涔嬪鐨勬寚浠わ紝瀵艱嚧铏氭嫙鏈虹殑宕╂簝鍜屼繚瀵嗕俊鎭鑾峰彇鐨勫彲鑳斤紝淇濊瘉 浜?jiǎn)绋嬪簭鐨勫仴澹э紝涔熶笉浼?xì)鍑虹幇鏇夸唬鍘熸湁Java API綾葷殑鎭舵剰浠ｇ爜琚繍琛岀殑鎯呭喌錛屽茍涓旂被鍔犺澆鍣ㄩ槻姝簡(jiǎn)鎭舵剰浠ｇ爜鍘誨共娑夊杽鎰忕殑浠ｇ爜錛屽畧鎶や簡(jiǎn)琚俊浠葷殑API綾誨簱 杈圭晫錛岀‘淇濅簡(jiǎn)浠ｇ爜鍙互榪涜鐨勬搷浣溿?br />
瀹夊叏綆＄悊鍣?br />
瀹夊叏綆＄悊鍣ㄤ負(fù)Java铏氭嫙鏈虹殑鐜寤虹珛浜?jiǎn)涓涓搗鍒頒繚鎶や綔鐢ㄧ殑"娌欑"錛岃繖涓?娌欑"涓虹▼搴忔彁渚涗簡(jiǎn)涓涓檺鍒朵簡(jiǎn)搴旂敤鐨勬搷浣滆繍琛岀幆澧冿紝淇濇姢浜?jiǎn)铏氭嫙鏈哄閮ㄧ殑璧? 婧愪笉浼?xì)琚櫄鎷熸満鍐呴儴鐨勬伓鎰忎唬鐮佺牬鍧忋傚畨鍏ㄧ鐞嗗櫒鐨勫畨鍏ㄧ瓥鐣ュ彲浠ョ伒媧葷殑寤虹珛緇嗙矑搴︾殑璁塊棶鎺у埗絳栫暐錛屽皢涓嶅悓鐨勮祫婧愯闂潈闄愭巿浜堜笉鍚岀殑浠ｇ爜鍗曞厓錛岃繖涔熸槸Java 浣撶郴緇撴瀯瀹夊叏妯″瀷鐨勬渶澶х壒鐐瑰拰浼樺娍涔嬩竴銆?br />
棣栧厛鍦ㄨ祴浜堟潈闄愬墠鎴戜滑瑕佹槑紜唬鐮佸崟鍏冪殑鏉ユ簮錛岀鍚嶆媴淇濆彲浠ヤ嬌鐢ㄦ埛紜鏂囦歡鐨勬潵婧愶紝騫朵笖榪欎簺鏂囦歡鍦ㄦ湰鍦拌櫄鎷熸満鍔犺澆鍓嶆病鏈夎淇敼錛屽彧鏈変繚璇佷簡(jiǎn)婧愪唬鐮佹潵婧愮殑 鍙潬鎬э紝鎵嶈兘鍒嗛厤鐩稿簲鐨勬搷浣滄潈闄愩傚class鏂囦歡鎴栬卝ar鏂囦歡鐨勭鍚嶅彲浠ョ敤jdk涓殑jarsigner榪欎釜宸ュ叿銆傚畠棣栧厛瀵規(guī)牴鎹枃浠跺唴瀹硅繘琛屽崟鍚戞暎鍒? 璁＄畻錛屼駭鐢熶竴涓暎鍒楀鹼紝鐒跺悗鎶婅繖涓暎鍒楀姞鍒版枃浠跺悗闈綔涓烘枃浠剁殑涓閮ㄥ垎浼犻掔粰鐢ㄦ埛錛岀敤鎴鋒敹鍒版枃浠跺悗閲嶆柊鐢熸垚涓嬈℃暎鍒楀鹼紝鐒跺悗璺熸枃浠跺悗閮ㄧ殑鏁ｅ垪鍊艱繘琛屾瘮杈冿紝濡? 鏋滆繖涓や釜鏁ｅ垪鍊肩浉鍚岃鏄庢枃浠跺唴瀹規(guī)病鏈夎鏀瑰姩錛岃櫧鐒朵笉鍚岀殑鏂囦歡鍐呭鍙兘鐢熸垚鐩稿悓鐨勬暎鍒楀鹼紝浣嗘槸涓鑸琂ava閲囩敤鐨勬槸124浣嶆暎鍒楋紝榪欎釜闀垮害鎯寵浠庝竴涓笉鍚岀殑 杈撳叆浜х敓涓涓凡鐭ユ暎鍒楀肩殑璁＄畻鏄笉鍙鐨勩備粎浠呴氳繃鏁ｅ垪鍊兼槸娌℃湁鍔炴硶淇濊瘉浠ｇ爜鐨勬潵婧愮殑錛屽洜涓烘鏈夋伓鎰忕殑浜哄畬鍏ㄥ彲浠ユ妸鏁翠釜鏂囦歡鍜屾暎鍒楀奸兘鏇挎崲鎺夛紝涓轟簡(jiǎn)闃叉榪? 縐嶄簨鎯呭彂鐢燂紝蹇呴』鍦ㄥ彂閫佸墠鐢ㄧ閽ュ鏁ｅ垪鍊艱繘琛屽姞瀵嗭紝涓轟粈涔堜笉瀵規(guī)暣涓枃浠惰繘琛屽姞瀵嗗憿錛屽洜涓簀arsigner榛樿閲囩敤鐨勬槸DES綆楁硶錛屽姞瀵嗘湰韜篃鏄竴涓垂鏃? 鐨勮繃紼嬶紝鎴戜滑鐨勭洰鐨勫彧鏄負(fù)浜?jiǎn)淇濊瘉鏂囦欢鐨勬潵婧愯屼笉鏄枃浠舵湰韜殑淇濆瘑鎬э紝鎵浠ュ彧闇瑕佸鏁ｅ垪鍊艱繘琛屽姞瀵嗭紝鐢ㄦ埛鏀跺埌鏂囦歡浠ュ悗鐢ㄦ枃浠舵彁渚涜呯殑鍏挜榪涜瑙ｅ瘑鏉ラ獙璇佹暎鍒? 鍊兼病鏈夎鏇挎崲銆?nbsp;
鏄庣‘浜?jiǎn)浠ｇ爜鏉ユ簮锛岒q朵笖淇濊瘉娌℃湁琚慨鏀逛互鍚庯紝灝卞彲浠ョ粰瀹冨垎閰嶆搷浣滄潈闄愩傚畨鍏ㄧ瓥鐣ユ槸涓涓猨ava.sercurity.Policy鐨勫疄鐜? 綾伙紝Policy涓富瑕佸寘鍚簡(jiǎn)浠ｇ爜鏉ユ簮鍜岀浉搴旂殑鏉冮檺鐨勫搴斿叧緋諱俊鎭紝瀹夊叏綆＄悊鍣ㄧ殑check鏂規(guī)硶灝嗘牴鎹甈olicy瀵硅薄鍒ゆ柇緇欏鍏ョ殑浠ｇ爜璧嬩簣浠涔堟牱鐨勬搷浣? 鏉冮檺銆備唬鐮佹潵婧愭槸鐢眏ava.security.CodeSource琛ㄧず鐨勶紝榪欎釜瀵硅薄涓寘鍚簡(jiǎn)涓緇凜ertificate瀵硅薄錛岃鏄庝簡(jiǎn)涓鴻繖涓唬鐮佹枃浠舵媴 淇濈殑絳懼悕銆傝屾潈闄愭槸鐢╦ava.sercurity.Permission鐨勫瓙綾誨疄渚嬫潵琛ㄧず鐨勶紝姣忎竴涓狿ermission鏈変笁涓睘鎬э細(xì)綾誨瀷銆佸悕縐板拰鍙繘 琛岀殑鎿嶄綔錛岀被鍨嬭鏄庝簡(jiǎn)鏉冮檺鎺у埗鐨勮祫婧愮被鍨嬶紝姣斿FilePermission璇存槑浜?jiǎn)鏄?guī)枃浠舵搷浣滅殑鏉冮檺錛屽悕縐拌鏄庝簡(jiǎn)榪欎釜鏉冮檺鎺у埗鐨勫璞★紝姣斿 FilePermission鐨勫悕縐頒負(fù)"/mydoc/order.txt",璇存槑浜?jiǎn)瀵规枃錃gorder.txt鐨勬搷浣滄潈闄愶紝鍙繘琛岀殑鎿嶄綔灞炴ц鏄庝簡(jiǎn)榪欎釜鏉? 闄愬彲浠ヨ繘琛岀殑鎿嶄綔錛屾瘮濡?read"璇存槑榪欎釜FilePermission鍙互瀵筼rder.txt榪涜璇繪搷浣溿?br />
寮鍙戜漢鍛樺彲浠ラ氳繃緙栧啓浠ｇ爜緇ф壙SecurityManager綾誨緩绔嬭嚜宸辯殑瀹夊叏綆＄悊鍣ㄦ潵璁劇疆瀹夊叏絳栫暐錛屾洿鏂逛究鍜屽父鐢ㄧ殑鏂規(guī)硶鏄氳繃璁劇疆絳栫暐鏂囦歡鏉ュ疄鐜般? 榪欐槸涓涓瓥鐣ユ枃浠剁殑渚嬪瓙錛?br />
//浠巑ykeys鏂囦歡涓幏寰楃鍚嶇殑鍏挜
keystore "mykeys"
//鐢眆ather絳懼悕鐨勪唬鐮佽祴浜堣order.txt鏂囦歡鐨勬潈闄?br /> grant signedBy "father"{
permission java.io.FilePermission "order.txt","read";
}
//鏉ヨ嚜{Java_Home}/security/ex/鐩綍涓嬮潰鐨勬墍鏈塲ar鏂囦歡鍜宑lass鏂囦歡鏈夎鍐檕rder.txt鏂囦歡鐨勬潈闄?br /> grant codeBase "file:${Java_Home}/security/ex/*"{
permission java.io.FilePermission "order.txt","read,write";
}
//鏉ヨ嚜{Java_Home}/security/ex/鐩綍涓嬮潰鐨勫甫鏈墂ife絳懼悕鐨勬墍鏈塲ar鏂囦歡鍜宑lass鏂囦歡鏈夋帴鍙椼佽繛鎺ュ拰鐩戝惉8080绔彛 鐨勬潈闄?br /> grant signedBy "wife" codeBase "file:${Java_Home}/security/ex/*"{
permission java.io.SocketPermission "*:8080","accept,connect,listen";
}
//鎵鏈変唬鐮侀兘鏈夎鍐檃ppversion.properties鏂囦歡鐨勬潈闄?br /> grant {
permission java.io.FilePermission "appversion.properties","read,write";
}
濡傛灉涓涓簲鐢ㄧ▼搴忔病鏈夋寚瀹氬惎鍔ㄥ畨鍏ㄧ鐞嗗櫒榪涜騫查錛屽畠鐨勬墍鏈夋搷浣滀笉浼?xì)鍙楀埌绠＄悊鍣ㄧ殑闄愬堄灱屾寚瀹氬惎鍔ㄥ畨鍏ń帯鐞嗗櫒鏈変袱绉嶆柟寮忓Q屼竴縐嶆槸鍦ㄨ繍琛屽簲鐢ㄧ▼搴忕殑鏃跺欐寚 瀹氾紝涓縐嶆槸鍦ㄤ唬鐮佷腑鎸囧畾銆?br />
java -Djava.serciruty.manager myapplication
榪欓噷鎸囧畾浜?jiǎn)鍚姩榛樿瀹夊叏绠＄悊鍣ㄥQ岃繖鏃跺欏皢鏍規(guī)嵁Java榛樿鐨勫叏灞絳栫暐鏂囦歡鏉ヨ緗畨鍏ㄧ瓥鐣ワ紝榪欎釜鏂囦歡鏄?br />
/JAVA_HOME/lib/security/java.policy銆?br /> java -Djava.serciruty.manager 錛岲java.serciruty.policy錛?nbsp;myapplication
榪欓噷鍚姩瀹夊叏綆＄悊鍣紝闄や簡(jiǎn)榛樿鐨勫叏灞絳栫暐鏂囦歡澶栵紝涔熶細(xì)鎸夌収Djava.serciruty.policy鍙傛暟鎸囧畾鐨勭瓥鐣ユ枃浠舵潵璁劇疆瀹夊叏絳栫暐錛屾枃浠舵寚瀹? 鍙互鐢║RL涔熷彲浠ョ洿鎺ョ敤鏂囦歡鍚嶇О銆?br />
濡傛灉鏄湪浠ｇ爜涓寚瀹氾紝紼嬪簭閫氳繃setSecurityManager鏂規(guī)硶璁劇疆涓涓猨ava.lang.SecurityManager鐨勫疄渚嬫椂鍊欙紝榪? 鏃跺欏畨鍏ㄧ鐞嗗櫒灝變細(xì)寮濮嬫帶鍒跺簲鐢ㄧ▼搴︾殑鎿嶄綔浜?jiǎn)銆傝繖鏃跺綋綾誨姞杞藉櫒鍔犺澆綾誨埌铏氭嫙鏈虹殑鏃跺欙紝瀹夊叏綆＄悊鍣ㄦ牴鎹唬鐮佹潵婧愬拰絳懼悕鎵懼埌鐩稿簲鐨勬潈闄愶紝鐒跺悗寤虹珛榪欎釜綾葷殑淇濇姢 鍩烶rotectionDomain錛屼繚鎶ゅ煙瀹氫箟浜?jiǎn)杩欎釜绫绘墍鏈夌殑鏉冮檺銆傚綋搴旂敤紼嬪簭鐢ㄥ埌榪欎釜綾誨茍瑕佽繘琛屼換浣曞彲鑳界殑涓嶅畨鍏ㄦ搷浣滄椂錛岄兘浼?xì)鍚戝畨鍏ń帯鐞嗗櫒璇锋眰鎿嶄綔璁? 鍙紝瀹夊叏綆＄悊鍣ㄤ腑鏈変竴緋誨垪鐨刢heck鏂規(guī)硶鏉ユ鏌ユ搷浣滄槸鍚﹀彲琛岋紝姣斿checkRead鏂規(guī)硶浼?xì)妫鏌ユ槸鍚﹁兘澶熻鍙栨煇涓枃浠訛紝checkWrite鏂規(guī)硶媯(gè)鏌ユ槸 鍚﹁兘澶熷啓鍏ユ煇涓枃浠訛紝綆＄悊鍣ㄦ牴鎹搷浣滆姹傜被鍨嬭皟鐢ㄧ浉鍏崇殑check鏂規(guī)硶錛宑heck鏂規(guī)硶鏍規(guī)嵁綾葷殑淇濇姢鍩熷垽鏂搷浣滄槸鍚﹀彲琛岋紝濡傛灉鎿嶄綔娌℃湁鏉冮檺鐨勮瘽灝嗘姏鍑轟竴涓? 寮傚父錛屾搷浣滄敹鍒拌繖涓紓甯稿悗灝嗕笉鑳芥墽琛岋紝濡傛灉鎿嶄綔鍙鐨勮瘽錛宑heck鏂規(guī)硶灝遍『鍒╄繑鍥烇紝鎿嶄綔緇х畫鎵ц銆?br />
浠ヤ笂絳懼悕楠岃瘉銆佸畾涔夊畨鍏ㄧ瓥鐣ヤ互鍙?qiáng)瀹夊叏绠＄悊鍣▼個(gè)鏌ユ搷浣滄潈闄愪竴緋誨垪榪囩▼錛屾湁鏁堢殑淇濇姢浜?jiǎn)琚獼ava搴旂敤浣跨敤鐨勫閮ㄨ祫婧愮殑瀹夊叏鎬с傝娉ㄦ剰鐨勬槸鑰岀敱鍚姩綾誨姞杞藉櫒 鍔犺澆鐨勬牳蹇?jī)API綾繪槸涓嶅彈榪欎釜瀹夊叏綆＄悊鍣ㄧ殑鏉冮檺鎺у埗錛岃繖涔熸槸涓轟粈涔堣鐢ㄧ被鍔犺澆鍣ㄩ槻姝㈡牳蹇?jī)API琚伓鎰忎唬鐮佹浛鎹㈢殑鍘熷洜銆?br />
Java浣撶郴緇撴瀯鎻愪緵鐨勫畨鍏ˋPI
Java浣撶郴緇撴瀯鎻愪緵浜?jiǎn)涓壘c諱富瑕佺殑瀹夊叏API錛欽ava 璁よ瘉鍜屾巿鏉冩湇鍔? 錛圝ava Authentication and Authorization Service錛孞AAS錛夈丣ava 瀹夊叏濂楁帴瀛楁墿灞? 錛圝ava Secure Socket Extension錛孞SSE錛夊拰 Java 鍔犲瘑鎵╁睍 錛圝ava Cryptography Extension錛孞CE錛夈傚墠闈㈠凡緇忔彁鍒頒簡(jiǎn)瀹夊叏綆＄悊鍣ㄤ腑鐢ㄥ埌鐨凧AAS錛岃繖涓鑺傛垜浠彁鍒扮殑鏄疉PI涓昏鎸? Java鎻愪緵鐨勫淇℃伅榪涜鍔犲瘑鐨凧ava鍔犲瘑鎵╁睍鍖匤CE鍜孞ava瀹夊叏濂楁帴瀛楁墿灞曞寘JSSE, 榪欎簺API鎻愪緵浜?jiǎn)鍔犲瘑绠楁硶鍙互鎸夌収鎴戜滑鐨勯渶瑕侊紝瀹炵幇瀵逛換 鎰忔暟鎹殑鍔犲瘑鍜岃В瀵嗐?br />
Java鍔犲瘑鎵╁睍鍖匤CE鎻愪緵鐨勬槸鍩轟簬瀵嗛挜鐨勫姞瀵嗭紝瀹冮氳繃javax.crypto.Cipher綾繪潵瀹炵幇鏁版嵁鍔犲瘑鍚堣В瀵嗭紝鍔犲瘑瑙ｅ瘑鐨勫璞″彲浠ヤ嬌紼嬪簭 涓殑鏁扮粍瀵硅薄錛屼篃鍙互鏄氳繃Java嫻佹帴鍙ｈ鍑烘垨鑰呭啓鍏ョ殑鏁版嵁銆備嬌鐢–ipher綾誨姞瀵嗗彲浠ラ夋嫨澶氱鍔犲瘑綆楁硶銆佸姞瀵嗘ā寮忓拰濉ˉ鏈哄埗銆傚姞瀵嗙畻娉旿CE涓彁渚? 浜?jiǎn)DES銆佸閲岲ES銆丳BEWithMD5AndDES銆丷SA鍜孊lowfish絳夌瓑銆侱ES鏄緢澶氭満鏋勭粍緇囬噰鐢ㄧ殑鏁版嵁鍔犲瘑鏍囧噯錛涜屽閲岲ES浣跨敤澶? 涓狣ES瀵嗙爜榪涜澶氶暱DES鍔犲瘑錛屽姞澶т簡(jiǎn)鏀誨嚮鐨勯毦搴︿絾鏄篃澧炲姞浜?jiǎn)鍔犲瘑瑙ｅ瘑杩嚱E嬭鑺辯殑鏃墮棿錛汸BEWithMD5AndDES鍓嶉潰鎻愬埌榪囷紝涓昏鏄綆楁暎鍒楋紝 鐒跺悗瀵規(guī)暎鍒楄繘琛孌ES鍔犲瘑錛屾潵瀹炵幇絳懼悕璁よ瘉錛汻SA綆楁硶鏄?978騫村叕甯冪殑涓縐嶅垎緇勫姞瀵嗙畻娉曪紝涔熸槸鐜板湪搴旂敤寰楁渶騫挎硾鐨勫叕閽ュ瘑閽ョ畻娉曪紱Blowfish鏄敱 Bruce Schneier鍏竷鐨勪竴縐嶅姞瀵嗙畻娉曪紝娌℃湁鐢寵涓撳埄錛屽茍涓斿叕甯冧簡(jiǎn)瀹炵幇鐨勪唬鐮侊紝瀹冮傚悎涓嶉渶瑕佺粡甯告洿鎹㈠瘑閽ョ殑鎯呭喌銆?br />
閫夋嫨鍔犲瘑妯″紡鏄負(fù)浜?jiǎn)瀵瑰姞瀵嗘暟鎹仛杩涗竴姝ヨ皟鏁達(dá)紝浠庤屽鍔犺В瀵嗛毦搴︼紝妯″紡榪樺彲浠ュ皢鍒嗙粍鏄庢枃浣滀負(fù)嫻佹槑鏂囪繘琛屽鐞嗭紝鍑忓皯姣忔澶勭悊鐨勬暟鎹噺錛孞CE涓彁渚涗簡(jiǎn)鐢?shù)瀛? 瀵嗙爜鏈ā寮廍CB銆佸瘑鐮佸皝瑁呴摼鎺ユā寮廋BC銆佸瘑鐮佸弽棣堟ā寮廋FB鍜岃緭鍑哄弽棣堟ā寮廜FB銆傜數(shù)瀛愬瘑鐮佹湰妯″紡ECB鏄渶綆鍗曠殑涓縐嶆ā寮忥紝鍙槸瀵規(guī)槑鏂囨瘡8涓瓧鑺傝繘 琛屽垎緇勶紝騫朵笖涓嬈″畬鎴愭暣涓槑鏂囧垎緇勭殑鍔犲瘑錛屽畠閫傚悎瀵逛簩榪涘埗鏁版嵁嫻佽繘琛屽姞瀵嗭紱瀵嗙爜灝佽閾炬帴妯″紡CBC錛屾妸涓涓?瀛楄妭鐨勫垎緇勪綔涓鴻緭鍏ユ暟鎹鍙︿竴緇勫姞瀵嗙粨鏋滆繘琛? 淇錛岃繖鏍峰彲浠ユ妸鏄庢枃涓寘鍚殑鏁版嵁綾誨瀷榪涜闅愯棌錛岃繖縐嶆ā寮忓彲浠ュ鏂囨湰鏁版嵁榪涜鍔犲瘑錛涘瘑鐮佸弽棣堟ā寮廋FB錛岀被浼間簬CBC妯″紡鍙槸瀹炵幇紼嶆湁涓嶅悓錛屼笉鍚岀殑鏄? CBC妯″紡闇瑕佹槑鏂囧垎緇勬潵榪涜淇錛岃孋FB闇瑕佺殑鏁版嵁閲忓皬涓浜涳紝騫朵笖闀垮害鍙互榪涜璋冩暣;杈撳嚭鍙嶉妯″紡OFB錛岄傚悎閭ｇ鍔犲瘑鏁版嵁鍦ㄤ紶杈撹繃紼嬩腑鏈夊彲鑳戒駭鐢熷彉 鍖栫殑鎯呭喌錛屼駭鐢熷彉鍖栧嚭閿欏彧浼?xì)瀵箻q欎竴浣嶄駭鐢熷獎(jiǎng)鍝嶈屼笉浼?xì)濯?jiǎng)鍝嶆暣涓垎緇勩侸CE鍙互閫夋嫨涓ょ濉ˉ鏈哄埗PCKS5Padding鍜孨oPadding錛屽墠鑰呭皢瀵規(guī)槑 鏂囪繘琛屽垎緇勬椂鍊欙紝濡傛灉瀛楄妭鏁頒笉澶?鐨勫嶆暟灝辮繘琛屽～鍏咃紝淇濊瘉鏁版嵁鐨勯暱搴︿負(fù)涓涓畬鏁寸殑鍒嗙粍錛岃屽悗鑰呬笉瀵規(guī)暟鎹繘琛屽～鍏咃紝褰撴槑鏂囪繘琛屽垎緇勬椂鍊欙紝瀛楄妭鏁頒笉澶?鐨勫嶆暟 浼?xì)鎶涘囖Z竴涓紓甯搞?br />
Java瀹夊叏濂楁帴瀛楁墿灞曞寘JSSE鎻愪緵鐨勬槸鍩轟簬濂楁帴瀛椾箣闂翠紶杈撶殑鏁版嵁榪涜鍔犲瘑錛屽畠涓嶫CE鏈澶х殑涓嶅悓灝辨槸鏁版嵁鐨勫姞瀵嗚繃紼嬪拰浼犺緭榪囩▼鏄笉鍒嗙鐨勶紝濡傛灉璇? JAAS璁╂垜浠彲浠ヨ瘑鍒簲鐢ㄧ▼搴忔彁渚涜呭茍闄愬埗浠栦滑鍙兘璁塊棶鎺堟潈浣跨敤鐨勯偅閮ㄥ垎緋葷粺錛岄偅涔圝SSE淇濊瘉浜?jiǎn)鎴戜滑搴旂敤绋嬪簭浼犺緭鐨勬暟鎹畨鍏ㄦс侸SSE瀹炵幇浜? SSL錛堝畨鍏ㄥ鎺ュ瓧灞傦級(jí)鐨勫姞瀵嗭紝SSL浣滀負(fù)HTTPS鍗忚鐨勫熀紜錛屾彁渚涗簡(jiǎn)鍦═CP濂楁帴瀛椾笂瀵規(guī)暟鎹繘琛屽姞瀵嗙殑鏂規(guī)硶錛屼篃鏄熀浜嶹EB搴旂敤鏈甯哥敤鐨勪竴縐嶅姞瀵嗘柟 寮忋備嬌鐢↗SSE API棣栧厛鎴戜滑闇瑕佸緩绔婼SL鐜錛孲SL鏈嶅姟鍣ㄧ寤虹珛瀵嗛挜搴撳瓨鏀炬湇鍔″櫒縐侀挜鍜岄獙璇佽韓浠界殑璇佷功錛岃孲SL瀹㈡埛绔緩绔嬩俊浠誨簱楠岃瘉淇′換鐨勮瘉 涔︼紝瀵嗛挜搴撳拰淇′換搴撻兘鏄氳繃JDK涓璳eytool榪欎釜宸ュ叿鏉ヨ繘琛岀鐞嗭紱鍏舵錛屾垜浠渶瑕佷粠涓涓?nbsp;JSSE 濂楁帴瀛楀伐鍘傝屼笉鏄洿鎺? 浠?nbsp;java.net.Socket 綾昏幏寰楀鎺ュ瓧錛屽鎴風(fēng)浠ｇ爜浠?nbsp;SSLSocketFactory 鑾峰彇濂楁帴瀛楋紝鑰屾湇鍔″櫒绔唬鐮? 浠?nbsp;SSLServerSocketFactory 鑾峰彇濂楁帴瀛楋紱閫氳繃浠庤繖浜涘伐鍘傝幏鍙栧鎺ュ瓧錛屾垜浠氨鍙互鍒╃敤 JSSE 鎻愪緵紼嬪簭鎻愪緵鐨勬鏋訛紝鑰屼笉鏄? 鍍?nbsp;java.net 鍖呭厑璁告垜浠墍浣滅殑閭ｆ牱錛岀畝鍗曞湴鍒涘緩鏍囧噯鐨勩佷笉瀹夊叏鐨勫鎺ュ瓧銆備嬌鐢?nbsp;JSSE錛屾垜浠彲浠ュ畾涔夎繍琛屼換鎰忓簲鐢ㄧ▼搴忓崗璁?-鍖? 鎷?nbsp;HTTP銆乀CP/IP銆丗TP錛岀敋鑷?nbsp;Telnet--鐨勫鎴鋒満涓庢湇鍔″櫒涔嬮棿鐨勫畨鍏ㄥ鎺ュ瓧榪炴帴銆?br />
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