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涓嶈繃緲昏瘧寰楁瘮杈冪儌錛岃繕鏄湅鑻辨枃鍚э細(xì)
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]]>J2EE 1.2涓殑浜嬪姟綆＄悊涔嬩竴錛堣瘧錛?/title><link>http://www.aygfsteel.com/shawn/archive/2006/07/17/58663.html</link><dc:creator>鍝?/dc:creator><author>鍝?/author><pubDate>Mon, 17 Jul 2006 15:38:00 GMT</pubDate><guid>http://www.aygfsteel.com/shawn/archive/2006/07/17/58663.html</guid><wfw:comment>http://www.aygfsteel.com/shawn/comments/58663.html</wfw:comment><comments>http://www.aygfsteel.com/shawn/archive/2006/07/17/58663.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/shawn/comments/commentRss/58663.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/shawn/services/trackbacks/58663.html</trackback:ping><description><![CDATA[聽寰堣佺殑鏂囩珷錛屼笉榪囧叧浜庝簨鍔＄殑闃愯堪榪樻槸姣旇緝鍏ㄩ潰鐨勩傚叏鏂囧彲瑙侊細(xì)<a target="_blank">http://www.javaworld.com/jw-07-2000/jw-0714-transaction.html</a><br />涓涓簨鍔″彲浠ュ畾涔変負(fù)鐢變竴緇勬搷浣滅粍鎴愮殑涓嶅彲鍒嗗壊鐨勫崟鍏冿紝瀹冧滑瑕佷箞鍏ㄩ儴琚墽琛岋紝瑕佷箞鍏ㄩ儴涓嶆墽琛屼互淇濇寔浜嬫暟鎹畬鏁存с傛瘮濡傦紝浠庝綘鐨勬敮紲ㄥ笎鎴峰埌浣犵殑鍌ㄨ搫璐︽埛榪涜100緹庡厓鐨勮漿甯愬寘鍚互涓嬩袱姝ユ搷浣滐細(xì)浠庢敮紲ㄨ處鎴風(fēng)櫥璁板熷嚭100緹庡厓錛岀劧鍚庡湪鍌ㄨ搫璐︽埛娣誨姞100緹庡厓銆傝繖涓ゆ蹇呴』鍚屾椂琚墽琛屾垨鑰呬笉鎵ц浠ヤ繚鎶ゆ暟鎹殑瀹屾暣鎬у拰涓鑷存э紝浠ュ強(qiáng)閾惰鍜屽鎴蜂箣闂寸殑鍒╂伅鏍哥畻銆傚洜姝わ紝榪欎袱姝ョ殑鎿嶄綔緇勬垚浜?jiǎn)涓涓簨鍔°?br /><hr /><br /><strong><font size="4">浜嬪姟鐨勫睘鎬?/font><br /><br /></strong>鎵鏈夌殑浜嬪姟閮藉叿澶囦互涓嬪嚑涓睘鎬э細(xì)鍘熷瓙鎬с佷竴鑷存с佺嫭绔嬫т互鍙?qiáng)鎸佷箙鎬э紙緙╁啓涓篈CID錛夈?br /><br /><strong>鍘熷瓙鎬?/strong>錛氭剰鍛崇潃涓嶅彲鍒嗗壊錛屼竴緇勬搷浣滄槸涓嶅彲鍒嗗壊鐨勶紝鎴戜滑縐頒箣涓哄師瀛愮殑銆?br /><br /><strong>涓鑷存?/strong>錛氫竴涓簨鍔＄殑杞崲蹇呴』鏄妸鎸佷箙鍖栫殑鏁版嵁浠庝竴涓竴鑷寸殑鐘舵佽漿鎹㈠埌鍙︿竴涓竴鑷寸殑鐘舵侊紝浠諱綍鍙戠敓鍦ㄥ叾闂寸殑杞崲澶辮觸錛岄兘蹇呴』淇濊瘉鏁版嵁鑳藉榪斿洖杞崲涔嬪墠鐨勯偅涓姸鎬併?br /><br /><strong>鐙珛鎬?</strong>聽 浜嬪姟涔嬮棿搴斾簰涓嶅獎(jiǎng)鍝嶏紝涔熷氨鏄錛屼竴涓浜庢湭瀹屾垚鐘舵佺殑浜嬪姟錛堟湭commit鎴杛ollback錛夛紝蹇呴』鐙珛浜庡叾浠栫殑浜嬪姟錛涘嵆浣垮嚑涓簨鍔″悓鏃惰繍琛岋紝瀵瑰叾涓瘡涓涓簨鍔℃潵璁詫紝鍏朵粬鐨勪簨鍔′篃蹇呴』鍦ㄥ畠涔嬪墠鎴栬呬箣鍚庡畬鎴愶紝鎵鏈夌殑騫跺彂浜嬪姟閮藉繀欏繪寜鐓у疄闄呯殑欏哄簭渚濇瀹屾垚銆?br /><br /><strong>鎸佷箙鎬э細(xì)</strong>涓鏃︿竴涓簨鍔℃垚鍔熷湴鎻愪氦瀹屾垚涔嬪悗錛坈ommit錛夛紝鐢辮浜嬪姟鎵甯︽潵鐨勭姸鎬佺殑鏀瑰彉蹇呴』鏄ǔ瀹氬拰鎸佷箙鐨勶紝鍗充嬌鍦ㄦ彁浜ゅ畬鎴愪箣鍚庡彂鐢熶簡(jiǎn)鍏朵粬鐨勯敊璇篃涓嶅彈褰卞搷銆?br /><br />鍥犳錛屼竴涓簨鍔¤繍琛岀殑鏈緇堢粨鏋滃彧鏈変袱涓細(xì)commit 鈥斺旀瘡涓姝ユ搷浣滅殑鎴愬姛鎵ц錛況ollback鈥斺旂敱浜庢墽琛岃繃紼嬩腑鍑虹幇浜?jiǎn)閿欒锛宺ollback淇濊瘉娌℃湁涓姝ユ搷浣滄墽琛屻?br /><br /><hr /><br /><font size="4"><strong>浜嬪姟鐙珛鎬х殑絳夌駭<br /></strong><br /></font>浜嬪姟鐨勭嫭绔嬫х敤鏉ヨ　閲忓茍鍙戜簨鍔′腑涓涓簨鍔℃煡鐪嬪彟澶栦竴涓簨鍔″凡緇弖pdate浣嗗皻鏈猚ommit鐨勬暟鎹殑鑳藉姏錛屽鏋滄煇浜涗簨鍔″厑璁稿叾浠栦簨鍔¤鍙栧畠宸茬粡upadte浣嗗皻鏈猚ommit鐨勬暟鎹紝榪欎簺浜嬪姟鍙兘浼?xì)浠ュ瓨鍦ㄤ笉涓鑷寸殑鏁版嵁鑰宺oll back錛屾垨鑰呯粨鏉熶笉蹇呰鐨勭瓑寰呰宑ommit鎴愬姛銆傦紙 those transactions could end up with inconsistent data were the transaction to roll back, or end up waiting unnecessarily were the transaction to commit successfully. 錛?br /><br />瓚婇珮絳夌駭鐨勭嫭绔嬫ф剰鍛崇潃瓚婂皯鐨勫茍鍙戞э紝騫朵笖瓚婃湁鍙兘鎴愪負(fù)緋葷粺鎬ц兘鐨勭摱棰堬紝浣嗗畠涔熷噺灝戜簡(jiǎn)璇誨彇鍒頒笉涓鑷存暟鎹殑鏈轟細(xì)銆備竴涓ソ鐨勫簲鐢ㄥ師鍒欐槸鍦ㄥ彲鎺ュ彈鐨勭郴緇熸ц兘鍩虹涓婇夋嫨灝藉彲鑳介珮鐨勭嫭绔嬫с備互涓嬫槸閫氬父鐨勭嫭绔嬫х瓑綰у垝鍒嗭紝浠庢渶浣庡埌鏈楂樺涓嬶細(xì)<br /><br /><strong>ReadUncommitted錛?/strong>宸茬粡update浣嗗皻鏈猚ommit鐨勬暟鎹彲浠ヨ鍏朵粬浜嬪姟璇誨彇<br /><br /><strong>ReadCommitted錛?/strong>涓涓簨鍔″彧鏈塩ommit浜?jiǎn)鐨勬暟鎹墠鍙鍏朵粬浜嬪姟璇诲?br /><br /><strong>RepeatableRead錛?/strong> 涓涓簨鍔″彧鏈塩ommit浜?jiǎn)鐨勬暟鎹墠鍙鍏朵粬浜嬪姟璇诲彇锛岄噸澶嶇殑璇诲彇鍒欎細(xì)瀵艰嚧鍜屾暟鎹疄畾鏈彁浜ょ姸鎬佹椂涓鏍風(fēng)殑緇撴灉<br /><br /><strong>Serializable錛?/strong> 榪欐槸鏈楂樼瓑綰х殑鐙珛鎬х瓑綰э紝淇濊瘉浜?jiǎn)涓涓簨鍔″鏁版嵁鎺掍粬鎬х殑璇誨啓璁塊棶錛屽畠鍖呭惈浜?jiǎn)ReadCommitted鍜孯epeatableRead綰у埆鐨勬墍鏈夐檺鍒訛紝鍚屾椂淇濊瘉鎵鏈夌殑浜嬪姟蹇呴』閫愪釜鎵ц錛屼互鑾峰彇鏈澶х▼搴︾殑鏁版嵁瀹屾暣鎬э紝榪欏鑷翠簡(jiǎn)鏈浣庣殑榪愯鎬ц兘浠ュ強(qiáng)鏈灝戠殑騫跺彂鎬э紝娉ㄦ剰錛岃繖閲岀殑Serializable鍜孞ava閲岄潰鐨刯ava.io.Serializable姣棤鑱旂郴銆?br /><br /><hr /><br /><strong>J2EE鏀寔鐨勪簨鍔?/strong><br /><br />J2EE騫沖彴鍖呮嫭浜?jiǎn)瑙勮寖銆佸吋瀹規(guī)est suite錛宎pplication寮鍙戣摑鍥撅紝浠ュ強(qiáng)鍙傝冨疄鐜般傚熀浜庣浉鍚岀殑瑙勮寖錛屼紬澶氱殑寮鍙戝晢鎻愪緵浜?jiǎn)涓嶅悓鐨勫簲鐢ㄦ湇鍔″櫒鍜屽疄鐜般侸2EE緇勪歡鐨勮璁℃槸鍩轟簬瑙勮寖鑰岄潪鍩轟簬鐗瑰畾鐨勪駭鍝侊紙姣斿鍩轟簬鏌愪釜鐗瑰畾鐨勫簲鐢ㄦ湇鍔″櫒錛夈侸2EE搴旂敤紼嬪簭閲岀殑緇勪歡鍒╃敤浜?jiǎn)J2EE瀹瑰櫒鍜屾湇鍔″櫒鎵鎻愪緵鐨勫熀紜鏈嶅姟錛屽洜姝ゅ彧闇瑕佸皢鍏蟲敞鐐規(guī)斁鍦ㄥ鐞嗕笟鍔￠昏緫涓婏紝J2EE閫氳繃閮ㄧ講鎻忚堪絎︼紝浣跨敤澹版槑寮忕殑灞炴э紝鏀寔鍙幾緙╃殑閮ㄧ講浠ュ強(qiáng)鍦ㄧ洰鏍囩幆澧冧腑鍙畾鍒剁殑鑳藉姏銆侸2EE鐨勭洰鏍囨槸淇濇姢IT鎶曡祫浠ュ強(qiáng)闄嶄綆application寮鍙戠殑鎴愭湰錛孞2EE鐨勭粍浠跺彲浠ヨ嚜宸卞紑鍙戜篃鍙粠澶栭潰鐨勪唬鐞嗗晢澶勮幏寰楋紝榪欐牱鍙互浣垮緱浣犵殑IT閮ㄩ棬鐨勬垚鏈檷浣庡茍鎻愰珮浜?jiǎn)鍙几缇冩с?br /><br />J2EE鎵鎻愪緵鐨勫熀紜鏈嶅姟涓竴涓噸瑕侀儴鍒嗕究鏄浜嬪姟鐨勬敮鎸侊紝鍦↗2EE瑙勮寖涓紝鎻忚堪浜?jiǎn)Java浜嬪姟鐨凙PI錛圝TA錛孞ava Transaction API錛夛紝JTA涓昏鍖呮嫭浜?jiǎn)鍑犱釜鎺ュ彛锛?xì)<font face="Courier New">javax.transaction.UserTransaction鍜宩avax.transaction.TransactionManager銆俇serTransaction鎺ュ彛鎻愪緵緇檃pplication緇勪歡錛屽application緇勪歡鑰岃█錛屽簳涓嬬殑J2EE鏈嶅姟鍣ㄥ拰TransactionManager涔嬮棿鐨勪氦浜掓槸閫忔槑鐨勩俆ransactionManager鐨勫疄鐜版彁渚涚粰搴旂敤鏈嶅姟鍣ㄥ浜嬪姟杈圭晫鐨勬帶鍒躲侸2EE鐨刟pplication緇勪歡鎻愪緵浜?jiǎn)瀵笿TA鐨刄serTransaction鍜孞DBC鐨勪簨鍔＄殑鏀寔銆?br /><br />J2EE騫沖彴鏀寔浜?jiǎn)涓たU嶇被鍨嬬殑浜嬪姟綆＄悊鑼冨紡錛氬０鏄庡紡鐨勪簨鍔″拰緙栫▼寮忕殑浜嬪姟錛?em>declarative transaction demarcation</em> and <em>programmatic transaction demarcation.</em> 錛?br /><br />...(to be continued)</font><img src ="http://www.aygfsteel.com/shawn/aggbug/58663.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/shawn/" target="_blank">鍝?/a> 2006-07-17 23:38 <a href="http://www.aygfsteel.com/shawn/archive/2006/07/17/58663.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss> <footer> <div class="friendship-link"> <a href="http://www.aygfsteel.com/" title="狠狠久久亚洲欧美专区_中文字幕亚洲综合久久202_国产精品亚洲第五区在线_日本免费网站视频">狠狠久久亚洲欧美专区_中文字幕亚洲综合久久202_国产精品亚洲第五区在线_日本免费网站视频</a> </div> </footer> 主站蜘蛛池模板： <a href="http://" target="_blank">宜兰市</a>| <a href="http://" target="_blank">广州市</a>| <a href="http://" target="_blank">淄博市</a>| <a href="http://" target="_blank">朔州市</a>| <a href="http://" target="_blank">如东县</a>| <a href="http://" target="_blank">平远县</a>| <a href="http://" target="_blank">舒兰市</a>| 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