锘??xml version="1.0" encoding="utf-8" standalone="yes"?>日韩电影中文字幕一区,亚洲v日韩v综合v精品v,日韩五码电影http://www.aygfsteel.com/Todd/category/44352.html璁頒綇鈥樿閬楀繕鑰呪欑殑鍚箟錛屾垜浠棦闈炵敓鑰呬篃闈炴鑰咃紝鎴戜滑灝嗚媧葷潃鐨勫拰姝誨幓鐨勪漢閬楀繕銆?lt;br />鎴戜滑鍥炲埌浜嗘浘緇忓憡鍒殑涓栫晫涓婏紝浣嗘槸鍗存案榪滄棤娉曞洖鍒版垜浠浘緇忔椿鐫鐨勯偅浜涙棩瀛愶紝<br />姘歌繙鏃犳硶鍥炲埌閭ｄ簺鎴戜滑鏇劇粡鐖辮繃鐨勪漢鐨勮韓杈廣傛垜浠槸瀛樺湪涔熸槸璇呭拻錛?lt;br />鍥犳鎴戜滑閬楀繕榪囧幓錛屽茍涓旇榪囧幓閬楀繕... zh-cnWed, 19 Oct 2011 02:09:55 GMTWed, 19 Oct 2011 02:09:55 GMT60java heap space錛?PermGen space 閿欒 浣跨敤jvisualvm鐩戞祴璁劇疆鍚堢悊鍊?/title><link>http://www.aygfsteel.com/Todd/archive/2011/10/18/361543.html</link><dc:creator>Todd</dc:creator><author>Todd</author><pubDate>Tue, 18 Oct 2011 14:16:00 GMT</pubDate><guid>http://www.aygfsteel.com/Todd/archive/2011/10/18/361543.html</guid><wfw:comment>http://www.aygfsteel.com/Todd/comments/361543.html</wfw:comment><comments>http://www.aygfsteel.com/Todd/archive/2011/10/18/361543.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/Todd/comments/commentRss/361543.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/Todd/services/trackbacks/361543.html</trackback:ping><description><![CDATA[浣跨敤myeclipse鍚姩tomcat 鎶ava heap space 錛孭ermGen space 閿欒錛屽垎鍒負 heap鍐呭瓨涓嶈凍錛孭ermGen鍐呭瓨涓嶈凍<br />闇鍔犲ぇ tomcat鍚姩欏瑰弬鏁?Xmx 鍜?nbsp;XX:MaxPermSize<br />PermGen鏄寚鍐呭瓨鐨勬案涔呬繚瀛樺尯鍩燂紝瀹冪敤浜庡瓨鏀綾lass鍜?method 瀵硅薄錛屼互鍙奡tring 瀵硅薄<br />錛坰un鍘熸枃錛歱ermanent generation is the area of the heap where class and method objects are stored. If an application loads a very large number of classes, then the size of the permanent generation might need to be increased using the -XX:MaxPermSize option. <div>Interned java.lang.String objects are also stored in the permanent generation. The java.lang.String class maintains a pool of strings. When the intern method is invoked, the method checks the pool to see if an equal string is already in the pool. If there is, then the intern method returns it; otherwise it adds the string to the pool. In more precise terms, the java.lang.String.intern method is used to obtain the canonical representation of the string; the result is a reference to the same class instance that would be returned if that string appeared as a literal. If an application interns a huge number of strings, the permanent generation might need to be increased from its default setting. </div> <div>When this kind of error occurs, the text String.intern or ClassLoader.defineClass might appear near the top of the stack trace that is printed. </div> <div>The jmap -permgen command prints statistics for the objects in the permanent generation, including information about internalized String instances. See 2.6.4 Getting Information on the Permanent Generation.</div>錛?br />PermGen鍙堟槸涓涓壒孌婂唴瀛樺尯鍩燂細Classloader 鍔犺澆鐨勪笢涓滄槸涓嶈兘鍥炴敹鐨勶紝瀹冧滑鏀懼湪PermGen涓?br />錛坱omcat鍘熸枃錛歐hy does the memory usage increase when I redeploy a web application? Because the Classloader (and the Class objects it loaded) cannot be recycled. They are stored in the permanent heap generation by the JVM, and when you redepoy a new class loader is created, which loads another copy of all these classes. This can cause OufOfMemoryErrors eventually.錛?br /><br />鍥炲埌鎴戠殑闂鏉ワ紝鎵撳紑%java_home%bin\jvisualvm.exe  (jdk6浠ヤ笂鏈?<br />鏌ョ湅tomcat鐨勫唴瀛樻儏鍐碉紝鐐瑰嚮tomcat鏍囩涓媘onitor , 褰搖sed heap = max heap      used PermGen = max PermGen 鏃秚omcat榪樺湪鍚姩涓紝涓浼氬氨鎶ラ敊錛?br />鐢變簬姝ゅ墠宸茬粡灝唌yeclipse涓璼erver->tomcat->tomcatx.x->jdk鐨勫弬鏁拌緗垚-Xms64m -Xmx512m -XX:MaxPermSize=80m<br />浣嗘槸monitor 鐢婚潰涓璵ax heap涓?256M<br />鐐瑰嚮overview鏍囩,鍙戠幇jvm鍙傛暟濡備笅錛?br />-Xms64m<br />-Xmx512m<br />-XX:MaxPermSize=80m<br />-Xms64m<br />-Xmx256m<br /><br />鏄劇劧tomcat浣跨敤浜嗘渶鍚庣殑璁劇疆-Xms64m -Xmx256m錛涜繖涓槸鍦╩yeclipse鐨勫睘鎬?銆媕ava->installed jres 涓殑vm鍚姩鍙傛暟閲岋紝鍙屽嚮榛樿鍚敤鐨刯re錛屾妸鍙傛暟鍘繪帀鎴栬呰緗垚-Xms64m -Xmx512m<br />鍐嶅洖鍒皊erver->tomcat->tomcatx.x->jdk涓妸-XX:MaxPermSize=80m淇敼涓?XX:MaxPermSize=128m<br />淇濆瓨鍚庡啀鍚姩tomcat錛宱k<br /><br />鍙﹀錛屼嬌鐢╦visualvm鎸佺畫鐩戞祴tomcat鍐呭瓨鎯呭喌鍙戠幇heap鍖哄煙鐨勫唴瀛樹嬌鐢ㄤ細鍦ㄤ竴涓珮宄板悗紼沖畾闄嶄綆錛屽唴瀛樿鍥炴敹浜嗭紱<br />鑰孭ermGen鍖哄煙鐨勫唴瀛樺垯鏄笉鏂鍔犲埌杈句竴涓嘲鍊煎悗灝變笉鍐嶅鍔狅紝浣嗕箣鍚庢鍖虹殑鍐呭瓨娌℃湁琚洖鏀訛紝楠岃瘉浜嗕笂闈㈢殑璇存硶錛?br /><br />澶氳涓ゅ彞錛歫ava鐨勫姩鎬佸姞杞借鐢熷嚭璇稿妗嗘灦錛屽湪絀洪棿涓婁篃鏆撮湶鍑洪棶棰橈紝鍙嶅皠鍦ㄦ椂闂翠笂涔熷瓨鍦ㄦ晥鐜囬棶棰橈細涓嬮潰鏄粍嫻嬭瘯鏁版嵁錛?br /> <p>Java version 1.6.0_13<br />Java HotSpot(TM) Client VM<br />11.3-b02<br />Sun Microsystems Inc.</p> <p>Direct access using member field:<br /> 47 125 47 46 46<br /> average time = 66 ms.<br />Reference access to member field:<br /> 109 109 110 94 109<br /> average time = 106 ms.<br />Reflection access to member field:<br /> 13094 12984 13063 13062 13094<br /> average time = 13051 ms.</p> <p>Java version 1.6.0_13<br />Java HotSpot(TM) Client VM<br />11.3-b02<br />Sun Microsystems Inc.</p> <p>Direct call using member field:<br /> 47 31 109 109 31<br /> average time = 70 ms.<br />Direct call using passed value:<br /> 16 16 16 31 15<br /> average time = 20 ms.<br />Call to object using member field:<br /> 46 47 47 47 32<br /> average time = 43 ms.<br />Call to object using passed value:<br /> 15 16 31 16 16<br /> average time = 20 ms.<br />Reflection call using member field:<br /> 812 782 844 844 844<br /> average time = 829 ms.<br />Reflection call using passed value:<br /> 938 953 954 1031 953<br /> average time = 973 ms.</p> <p>Java version 1.6.0_13<br />Java HotSpot(TM) Client VM<br />11.3-b02<br />Sun Microsystems Inc.</p> <p>Direct Object creation:<br /> 62 47 78 32 93<br /> average time = 63 ms.<br />Reflection Object creation:<br /> 125 94 94 109 187<br /> average time = 121 ms.<br />Direct byte[8] creation:<br /> 125 187 94 172 94<br /> average time = 137 ms.<br />Reflection byte[8] creation:<br /> 266 171 187 188 219<br /> average time = 191 ms.<br />Direct byte[64] creation:<br /> 250 172 156 125 203<br /> average time = 164 ms.<br />Reflection byte[64] creation:<br /> 281 219 203 203 219<br /> average time = 211 ms.</p>鍗庝附鐨勪笂灞傞渶瑕佸潥瀹炵殑搴曞眰鍩虹<br /><br /><a >http://wiki.apache.org/tomcat/FAQ/Deployment</a><br /><a >http://download.oracle.com/javase/7/docs/webnotes/tsg/TSG-VM/html/memleaks.html#gbyuu</a><br /><br /><img src ="http://www.aygfsteel.com/Todd/aggbug/361543.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/Todd/" target="_blank">Todd</a> 2011-10-18 22:16 <a href="http://www.aygfsteel.com/Todd/archive/2011/10/18/361543.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>eclipse wtp tomcat webservicehttp://www.aygfsteel.com/Todd/archive/2011/05/06/349652.htmlToddToddThu, 05 May 2011 17:45:00 GMThttp://www.aygfsteel.com/Todd/archive/2011/05/06/349652.htmlhttp://www.aygfsteel.com/Todd/comments/349652.htmlhttp://www.aygfsteel.com/Todd/archive/2011/05/06/349652.html#Feedback0http://www.aygfsteel.com/Todd/comments/commentRss/349652.htmlhttp://www.aygfsteel.com/Todd/services/trackbacks/349652.html1.what's eclipse wtp

wtp(web tools platform )欏圭洰鍦╡clipse騫沖彴涓婅繘琛屾墿灞曪紝鏄竴涓紑鍙慾2ee web搴旂敤紼嬪簭鐨勫伐鍏烽泦銆倃tp鍖呭惈浠ヤ笅宸ュ叿錛?/p>

* 涓涓簮鐮佺紪杈戝櫒www.ssbbww.com鐢ㄦ潵緙栬緫html, javascript, css, jsp, sql, xml, dtd, xsd, 鍜寃sdl銆?/p>

* 涓涓浘褰㈢紪杈戝櫒鐢ㄦ潵緙栬緫xsd涓巜sdl銆?/p>

* j2ee欏圭洰鏋勫緩鍣ㄥ拰涓涓猨2ee鍚戝宸ュ叿銆?/p>

* 涓涓獁eb鏈嶅姟鍒涘緩鍚戝鍜岀鐞嗗櫒錛屽拰ws-i 嫻嬭瘯宸ュ叿銆?/p>

* 涓涓暟鎹簱璁塊棶錛屾煡璇㈠伐鍏風瓑銆?/p>

wtp鐢變袱涓瓙欏圭洰鏋勬垚:wst(web鏍囧噯宸ュ叿闆? 涓巎st(j2ee鏍囧噯宸ュ叿闆?8ttt8 wtp鏄粈涔堟剰鎬?鏄粈涔堜笢瑗縚浠涔堝彨-浠涔堟槸wtp

wtp鏀粯鎰挎剰鍘熷垯錛岀敤浜庡垎鏋愮ぞ浼氭垚鍛樹負欏圭洰鎵浜у嚭鐨勬晥鐩婃効鎰忔敮浠樼殑浠峰箋?/p>



2.瀹夎鍙婂伐紼嬪垱寤哄彂甯冿細eclipse for java ee 閲屽凡緇忓畨瑁厀tp,so涓嶇敤鍜變滑鍔ㄦ墜錛宔clipse 緇忓吀鐗堝畨瑁厀tp?
宸ョ▼鐨勫垱寤哄強鍙戝竷
瑙併愪紶閫侀棬銆戯細http://www.vogella.de/articles/EclipseWTP/article.html

3.wtp絳旂枒瑙併愪紶閫侀棬銆?a >http://wiki.eclipse.org/WTP_Tomcat_FAQ

4.鎺ョ潃鍒涘緩涓涓獂fire webservice

瑙?http://blog.csdn.net/xzmyzy/archive/2008/01/16/2047244.aspx
http://blog.csdn.net/alex197963/archive/2009/07/20/4363328.aspx

Todd 2011-05-06 01:45 鍙戣〃璇勮
]]>eclipse failed to create the java virtual machine http://www.aygfsteel.com/Todd/archive/2011/05/05/349640.htmlToddToddThu, 05 May 2011 14:46:00 GMThttp://www.aygfsteel.com/Todd/archive/2011/05/05/349640.htmlhttp://www.aygfsteel.com/Todd/comments/349640.htmlhttp://www.aygfsteel.com/Todd/archive/2011/05/05/349640.html#Feedback0http://www.aygfsteel.com/Todd/comments/commentRss/349640.htmlhttp://www.aygfsteel.com/Todd/services/trackbacks/349640.htmlQ:瑁呬簡鏂扮殑jdk鍚庯紝鎵撳紑eclipse璺沖嚭failed to create the java virtual machine
A:鎵撳紑 $Eclipse_Home/eclipse.ini鎵懼埌涓嬮潰涓琛?br /> -Dosgi.requiredJavaVersion=1.5
鏀規垚鏂拌鐜鍙橀噺涓媕dk version
-Dosgi.requiredJavaVersion=1.6

reopen eclipse,ok!



Todd 2011-05-05 22:46 鍙戣〃璇勮
]]>Eclipse 甯哥敤璁劇疆http://www.aygfsteel.com/Todd/archive/2010/03/19/315929.htmlToddToddFri, 19 Mar 2010 07:14:00 GMThttp://www.aygfsteel.com/Todd/archive/2010/03/19/315929.htmlhttp://www.aygfsteel.com/Todd/comments/315929.htmlhttp://www.aygfsteel.com/Todd/archive/2010/03/19/315929.html#Feedback1http://www.aygfsteel.com/Todd/comments/commentRss/315929.htmlhttp://www.aygfsteel.com/Todd/services/trackbacks/315929.htmlMyEclipse璁劇疆JSP欏甸潰榛樿緙栫爜鏂瑰紡錛?

windows(紿楀彛)-Preferences(棣栭夐」)-MyEclipse-Files & Editors-JSP-鍙充晶encoding:璁劇疆涓篒SO10646/Unicode(UTF-8)


MyEclipse鍦↗ava鏂囦歡涓緗綔鑰呫佹棩鏈熺瓑璇存槑錛?/strong>
windows(紿楀彛)-Preferences(棣栭夐」)-Java-Code Style(浠ｇ爜鏍峰紡)-Code Templates(浠ｇ爜妯＄増)-鍙充晶Comments(娉ㄩ噴)-閫夋嫨Types(綾誨瀷)-鐐瑰嚮edit(緙栬緫)-杈撳叆濡備笅淇℃伅

/**
* @浣滆?Jcuckoo
* @鍒涘緩鏃ユ湡 ${date}
* @鐗堟湰 V 1.0
*/

鐐瑰嚮OK(紜畾)-閫変腑宸︿晶鐨勪唬鐮佹牱寮?閫夋嫨鍙充晶澶嶉夋(Automatically add Comments for new Methods and types)(鑷姩涓烘柊鏂規硶鍜岀被鍨嬫坊鍔犳敞閲?-鐐瑰嚮Apply(搴旂敤)-鐐瑰嚮OK(紜畾)



Eclipse鍦↗ava鏂囦歡涓緗綔鑰呫佹棩鏈熺瓑璇存槑錛?
windows(紿楀彛)-Preferences(棣栭夐」)-Java-Code Style-Code Templates-鍙充晶Comments-閫夋嫨Types-鐐瑰嚮edit(緙栬緫)-杈撳叆濡備笅淇℃伅

/**
* @浣滆?Jcuckoo
* @鍒涘緩鏃ユ湡 ${date}
* @鐗堟湰 V 1.0
*/

鐐瑰嚮OK-閫変腑涓嬮潰鐨勫閫夋(Automatically add Comments for new Methods and types)-鐐瑰嚮Apply-鐐瑰嚮OK

Todd 2010-03-19 15:14 鍙戣〃璇勮
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