锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#20037;&#20037;&#20037;&#20037;&#19968;&#21306;&#44;&#22312;&#32447;&#35270;&#39057;&#36164;&#28304;&#31449;&#44;&#25104;&#20154;&#21488;&#28286;&#20122;&#27954;&#31934;&#21697;&#19968;&#21306;&#20108;&#21306;</title><link>http://www.aygfsteel.com/parable-myth/category/12081.html</link><description>JAVA銆丩INUX鎴戠殑鐖?鎴戠殑涓栫晫</description><language>zh-cn</language><lastBuildDate>Thu, 07 Jun 2007 21:05:41 GMT</lastBuildDate><pubDate>Thu, 07 Jun 2007 21:05:41 GMT</pubDate><ttl>60</ttl><item><title>hibernate鎬ц兘浼樺寲</title><link>http://www.aygfsteel.com/parable-myth/articles/122348.html</link><dc:creator>鎴戝績椋炵繑</dc:creator><author>鎴戝績椋炵繑</author><pubDate>Wed, 06 Jun 2007 05:52:00 GMT</pubDate><guid>http://www.aygfsteel.com/parable-myth/articles/122348.html</guid><wfw:comment>http://www.aygfsteel.com/parable-myth/comments/122348.html</wfw:comment><comments>http://www.aygfsteel.com/parable-myth/articles/122348.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/parable-myth/comments/commentRss/122348.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/parable-myth/services/trackbacks/122348.html</trackback:ping><description><![CDATA[1銆侀拡瀵筼racle鏁版嵁搴撹�岃█錛孎etch Size 鏄瀹欽DBC鐨凷tatement璇誨彇鏁版嵁鐨勬椂鍊欐瘡嬈′粠鏁版嵁搴撲腑鍙栧嚭鐨勮褰曟潯鏁幫紝涓�鑸緗負30銆?0銆?00銆侽racle鏁版嵁搴撶殑JDBC椹卞姩榛樿鐨凢etch Size=15錛岃緗瓼etch Size璁劇疆涓猴細30銆?0錛屾�ц兘浼氭湁鏄庢樉鎻愬崌錛屽鏋滅戶緇澶э紝瓚呭嚭100錛屾�ц兘鎻愬崌涓嶆槑鏄撅紝鍙嶈�屼細娑堣�楀唴瀛樸�?br /><br />銆�銆�鍗沖湪hibernate閰嶅埗鏂囦歡涓繘琛岄厤鍒訛細<br />1 &lt;property name="hibernateProperties"&gt;<br />2 &lt;props&gt;<br />3 &lt;prop key="hibernate.dialect"&gt;org.hibernate.dialect.Oracle9Dialect&lt;/prop&gt;<br />4 &lt;prop key="hibernate.show_sql"&gt;false&lt;/prop&gt;<br />5 &lt;!-- Create/update the database tables automatically when the JVM starts up<br />6 &lt;prop key="hibernate.hbm2ddl.auto"&gt;update&lt;/prop&gt; --&gt;<br />7 &lt;!-- Turn batching off for better error messages under PostgreSQL <br />8 &lt;prop key="hibernate.jdbc.batch_size"&gt;100&lt;/prop&gt; --&gt;<br />9 &lt;prop key="hibernate.jdbc.batch_size"&gt;50&lt;/prop&gt;<br />10 &lt;/props&gt;11 &lt;/property&gt;Fetch Size璁劇殑瓚婂ぇ錛岃鏁版嵁搴撶殑嬈℃暟瓚婂皯錛岄�熷害瓚婂揩錛汧etch Size瓚婂皬錛岃鏁版嵁搴撶殑嬈℃暟瓚婂錛岄�熷害瓚婃參銆?br /><br />2銆佸鏋滄槸瓚呭ぇ鐨勭郴緇燂紝寤鴻鐢熸垚htm鏂囦歡銆傚姞蹇〉闈㈡彁鍗囬�熷害銆?br /><br />銆�銆�3銆佷笉瑕佹妸鎵�鏈夌殑璐ｄ換鎺ㄥ湪hibernate涓婏紝瀵逛唬鐮佽繘琛岄噸鏋勶紝鍑忓皯瀵規暟鎹簱鐨勬搷浣滐紝灝介噺閬垮厤鍦ㄦ暟鎹簱鏌ヨ鏃朵嬌鐢╥n鎿嶄綔錛屼互鍙婇伩鍏嶉�掑綊鏌ヨ鎿嶄綔錛屼唬鐮佽川閲忋�佺郴緇熻璁＄殑鍚堢悊鎬у喅瀹氱郴緇熸�ц兘鐨勯珮浣庛�?br /><br />銆�銆�4銆?瀵瑰ぇ鏁版嵁閲忔煡璇㈡椂錛屾厧鐢╨ist()鎴栬�卛terator()榪斿洖鏌ヨ緇撴灉錛?<br /><br />銆�銆�錛?錛? 浣跨敤List()榪斿洖緇撴灉鏃訛紝Hibernate浼氭墍鏈夋煡璇㈢粨鏋滃垵濮嬪寲涓烘寔涔呭寲瀵硅薄錛岀粨鏋滈泦杈冨ぇ鏃訛紝浼氬崰鐢ㄥ緢澶氱殑澶勭悊鏃墮棿銆?<br /><br />銆�銆�錛?錛? 鑰屼嬌鐢╥terator()榪斿洖緇撴灉鏃訛紝鍦ㄦ瘡嬈¤皟鐢╥terator.next()榪斿洖瀵硅薄騫朵嬌鐢ㄥ璞℃椂錛孒ibernate鎵嶈皟鐢ㄦ煡璇㈠皢瀵瑰簲鐨勫璞″垵濮嬪寲錛屽浜庡ぇ鏁版嵁閲忔椂錛屾瘡璋冪敤涓�嬈℃煡璇㈤兘浼氳姳璐硅緝澶氱殑鏃墮棿銆傚綋緇撴灉闆嗚緝澶э紝浣嗘槸鍚湁杈冨ぇ閲忕浉鍚岀殑鏁版嵁錛屾垨鑰呯粨鏋滈泦涓嶆槸鍏ㄩ儴閮戒細浣跨敤鏃訛紝浣跨敤iterator ()鎵嶆湁浼樺娍銆?br /><br />銆�銆�5銆佸湪涓�瀵瑰銆佸瀵逛竴鐨勫叧緋諱腑錛屼嬌鐢ㄥ歡榪熷姞杞芥満鍒訛紝浼氫嬌涓嶅皯鐨勫璞″湪浣跨敤鏃舵柟浼氬垵濮嬪寲錛岃繖鏍峰彲浣垮緱鑺傜渷鍐呭瓨絀洪棿浠ュ強鍑忓皯鏁版嵁搴撶殑璐熻嵎錛岃�屼笖鑻O涓殑闆嗗悎娌℃湁琚嬌鐢ㄦ椂錛屽氨鍙噺灝戜簰鏁版嵁搴撶殑浜や簰浠庤�屽噺灝戝鐞嗘椂闂淬�?<br /><br />銆�銆�6銆佸鍚湁鍏寵仈鐨凱O錛堟寔涔呭寲瀵硅薄錛夋椂錛岃嫢default-cascade="all"鎴栬�?鈥渟ave-update鈥濓紝鏂板PO鏃訛紝璇鋒敞鎰忓PO涓殑闆嗗悎鐨勮祴鍊兼搷浣滐紝鍥犱負鏈夊彲鑳戒嬌寰楀鎵ц涓�嬈pdate鎿嶄綔銆?<br /><br />銆�銆�7銆佸浜庡ぇ鏁版嵁閲忔柊澧炪�佷慨鏀廣�佸垹闄ゆ搷浣滄垨鑰呮槸瀵瑰ぇ鏁版嵁閲忕殑鏌ヨ錛屼笌鏁版嵁搴撶殑浜や簰嬈℃暟鏄喅瀹氬鐞嗘椂闂寸殑鏈�閲嶈鍥犵礌錛屽噺灝戜氦浜掔殑嬈℃暟鏄彁鍗囨晥鐜囩殑鏈�濂介�斿緞錛屾墍浠ュ湪寮�鍙戣繃紼嬩腑錛岃灝唖how_sql璁劇疆涓簍rue錛屾繁鍏ヤ簡瑙ibernate鐨勫鐞嗚繃紼嬶紝灝濊瘯涓嶅悓鐨勬柟寮忥紝鍙互浣垮緱鏁堢巼鎻愬崌銆傚敖鍙兘瀵規瘡涓〉闈㈢殑鏄劇ず錛屽鏁版嵁搴撶殑鎿嶄綔鍑忓皯鍒?00----150鏉′互鍐呫�傝秺灝戣秺濂姐�?br /><br />銆�銆�浠ヤ笂鏄湪榪涜struts+hibernate+spring榪涜欏圭洰寮�鍙戜腑錛屽hibernate鎬ц兘浼樺寲鐨勫嚑鐐瑰績寰椼�?img src ="http://www.aygfsteel.com/parable-myth/aggbug/122348.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/parable-myth/" target="_blank">鎴戝績椋炵繑</a> 2007-06-06 13:52 <a href="http://www.aygfsteel.com/parable-myth/articles/122348.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss>                       <footer>
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