±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 1264  |  »Ø¸´: 1
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

einsteinjw

Òø³æ (СÓÐÃûÆø)

[ÇóÖú] °ïæ·­ÒëÏÂÓ¢ÒëÖУ¬¼±Çó£¬Ð»Ð»ÁË£¬¿ÉÒÔ·­ÒëÆäÖÐÒ»¶Î

Reflection enables a Java program to analyze and modify itself. In particular, a program can discover the values of field variables and change them [ Forman 2005 ], [ Sun 2002 ]. The Java reflection API includes a method that enables fields that are normally inaccessible to be accessed under reflection. The following code prints out the names and values of all fields of an object someObject of class SomeClass;
When the default security manager is used, it prevents fields that are normally
inaccessible from being accessed under reflection. The default security manager throws a java.security.AccessControlException in these circumstances. However, java.lang.reflect.ReflectPermission can be granted with action suppressAccessChecks to override this default behavior.
For example, although an object is ordinarily prevented from accessing private members or invoking private methods of another class, the APIs belonging to the java.lang.reflect package allow an object to do so contingent upon performing the language-defined access checks. It is important to note, however, that these access checks consider only the language-level visibility of the immediate caller. Consequently, unwary programmers can create an opportunity for a privilege escalation attack by untrusted callers.

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zcius

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

einsteinjw(½ð±Ò+20, ·­ÒëEPI+1): 2012-02-14 12:55:49
sltmac(½ð±Ò+25): 2012-02-25 09:49:41
·´Ë¼Ê¹µÃJava³ÌÐò¿ÉÒÔ·ÖÎöÇÒÐÞ¸Ä×Ô¼º¡£ÌرðÊÇ£¬Ò»¸ö³ÌÐò¿ÉÒÔ·¢ÏÖÓò±äÁ¿µÄÖµ£¬²¢ÐÞ¸ÄËüÃÇ[Forman 2005]£¬[Sun 2002]¡£ Java·´Ë¼API°üÀ¨Ò»¸ö·½·¨£¬Ê¹µÃͨ³£ÎÞ·¨·ÃÎʵÄÓòÔÚ·´Ë¼Ê±¿É·ÃÎÊ¡£ÏÂÃæµÄ´úÂë´òÓ¡³ö SomeClass ÀàµÄ¶ÔÏó someObject ¸÷ÓòµÄÃû³ÆºÍÖµ;


ȱʡµÄ°²È«¹ÜÀí£¬·ÀÖ¹Ò»°ã²»¿É·ÃÎʵÄÓòÔÚ·´Ë¼Ê±¿É·ÃÎÊ¡£´Ëʱ£¬È±Ê¡µÄ°²È«¹ÜÀíÆô¶¯Ò»¸ö java.security.AccessControlException¡£µ«ÊÇ£¬java.lang.reflect.ReflectPermission ×¼Ðí suppressAccessChecks ¸²¸Ç¸ÃȱʡÐÐΪ¡£
ÀýÈ磬ËäȻһ¸ö¶ÔÏóͨ³£²»ÄÜ·ÃÎÊÁíÒ»¸öÀàµÄ˽ÓгÉÔ±»òµ÷ÓÃÁíÒ»¸öÀàµÄ˽Óз½·¨£¬µ« java.lang.reflect °üÖеÄAPI ¿ÉÊÓÓïÑÔ¶¨ÒåµÄ·ÃÎʼì²é¶øÔÊÐíÕâÑù×ö¡£È»¶øÒª×¢Ò⣬ÕâЩ·ÃÎʼì²éÖ»¿¼ÂÇÁËÓïÑÔ²ã´Î¿É¼ûµÄÖ±½Óµ÷ÓÃÕß¡£Òò´Ë£¬´ÖÐĵijÌÐòÔ±»áÁôÏÂÊܲ»ÐÅÈε÷ÓÃÕß½øÐÐÌØÈ¨Éý¼¶¹¥»÷µÄ»ú»á¡£
2Â¥2012-02-14 06:16:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ einsteinjw µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ²ÄÁÏר˶322 +11 ¹þ¹þ¹þºðºðºð¹þ 2026-04-05 11/550 2026-04-06 14:07 by lqwchd
[¿¼ÑÐ] 290Çóµ÷¼Á085701 +11 1314Åõ»¨ 2026-04-02 11/550 2026-04-06 13:31 by zllcz
[¿¼ÑÐ] 085600£¬321·ÖÇóµ÷¼Á +13 ´ó²öС×Ó 2026-04-04 14/700 2026-04-06 12:47 by barlinike
[¿¼ÑÐ] 372·Ö£¬²ÄÁÏÓ뻯¹¤£¬Ò»Ö¾Ô¸ºþÄÏ´óѧ£¬Çóµ÷¼Á +3 À¶¼ãƬ 2026-04-01 3/150 2026-04-06 09:04 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] Ò»Ö¾Ô¸¹þ¶û±õ¹¤Òµ´óѧ085600Ó¢Ò»Êý¶þ337·ÖÇóµ÷¼Á +12 lyz0427 2026-04-03 12/600 2026-04-06 06:37 by houyaoxu
[¿¼ÑÐ] 329Çóµ÷¼Á +17 miaodesi 2026-04-02 20/1000 2026-04-05 18:33 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 385·Ö ÉúÎïѧ£¨071000£©Çóµ÷¼Á +11 qf626 2026-04-01 11/550 2026-04-05 17:35 by Ecowxq666£¡
[¿¼ÑÐ] ¿¼Ñе÷¼Á +3 mcbbc 2026-04-04 3/150 2026-04-05 10:03 by barlinike
[¿¼ÑÐ] ¿¼Ñе÷¼Á +11 СsunÒªºÃÔË 2026-04-04 11/550 2026-04-05 08:02 by qlm5820
[¿¼ÑÐ] 320Çóµ÷¼Á +3 Ò»ÑùÔ² 2026-04-04 3/150 2026-04-04 22:29 by à£à£à£0119
[¿¼ÑÐ] 349Çóµ÷¼Á +11 zwjjjjjj 2026-03-31 11/550 2026-04-04 19:52 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 266Çóµ÷¼Á +8 ѧԱ97LZgn 2026-04-03 8/400 2026-04-04 09:02 by 20021109
[¿¼ÑÐ] ¿¼Ñе÷¼Á +8 ²»°®ºÈÒûÁÏ 2026-04-03 8/400 2026-04-03 16:40 by Mistake-J
[¿¼ÑÐ] 320Çóµ÷¼Á +3 ũҵ¹¤³ÌÓëÐÅÏ¢¼ 2026-04-03 3/150 2026-04-03 11:40 by ÍÁľ˶ʿÕÐÉú
[¿¼ÑÐ] ÉúÎïѧ308·ÖÇóµ÷¼Á£¨Ò»Ö¾Ô¸»ª¶«Ê¦´ó£© +6 ÏàÐűػá¹ââÍòÕ 2026-03-31 7/350 2026-04-02 23:16 by JourneyLucky
[¿¼ÑÐ] 285Çóµ÷¼Á +8 AZMK 2026-04-02 11/550 2026-04-02 20:16 by yulian1987
[¿¼ÑÐ] 293Çóµ÷¼Á +4 çæçæÀÖ 2026-04-02 4/200 2026-04-02 20:10 by 6781022
[¿¼ÑÐ] 085410 Ò»Ö¾Ô¸211 22408·ÖÊý359Çóµ÷¼Á +3 123456789qw 2026-03-31 4/200 2026-04-02 00:06 by ÒåÎÄwang
[¿¼ÑÐ] 311Çóµ÷¼Á +10 ÀîÜÆÐÂ1 2026-03-31 10/500 2026-04-01 14:38 by chenqifeng666
[¿¼ÑÐ] ÍÁľ304Çóµ÷¼Á +5 ¶¥¼¶²Á²Á 2026-03-31 5/250 2026-04-01 08:15 by fdcxdystjk£¤
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û