U*w
2 楼
【 以下文字转载自 board 讨论区 】
发信人: UncleSnow (老当益壮), 信区: board
标 题: 申请艺术版版主
发信站: BBS 未名空间站 (Sat Nov 26 11:56:25 2011, 美东)
是否已阅读:1)《站规》2)《版务操作简易手册》?:
已阅读
[申请ID]:
UncleSnow
[申请版面]:
Arts
[申请职务]:
版主
[版务经验]:
有其他论坛版面管理经验
[申请纲领]:
艺术版群英汇聚,是买买提一朵奇葩。自Goldy辞职以来,版面优秀文章依然不断,奈
何无人管理。某不才,原为诸位艺术家尽职效力,为丰富版面做贡献。
[版规草案]:
发信人: UncleSnow (老当益壮), 信区: board
标 题: 申请艺术版版主
发信站: BBS 未名空间站 (Sat Nov 26 11:56:25 2011, 美东)
是否已阅读:1)《站规》2)《版务操作简易手册》?:
已阅读
[申请ID]:
UncleSnow
[申请版面]:
Arts
[申请职务]:
版主
[版务经验]:
有其他论坛版面管理经验
[申请纲领]:
艺术版群英汇聚,是买买提一朵奇葩。自Goldy辞职以来,版面优秀文章依然不断,奈
何无人管理。某不才,原为诸位艺术家尽职效力,为丰富版面做贡献。
[版规草案]:
l*s
3 楼
I am trying to compile demo of jasperreport, funny thing is that, if I put
the appache common logging/beanutil jars in the %JAVA%\lib\ext, compiling is
OK.
But if the libraries locate in somewhere else, and referenced through %
classpath%, ant complains. Why is such a different behavior?
the appache common logging/beanutil jars in the %JAVA%\lib\ext, compiling is
OK.
But if the libraries locate in somewhere else, and referenced through %
classpath%, ant complains. Why is such a different behavior?
r*l
6 楼
Java load class的顺序是:
1,bootstrap classloader,load最基本的runtime classes。bootstrap classloader
在Java世界里基本是神一样的class,有着不受Java规则制约的行为。
2,extension classloader,它load你放在java\lib\ext里面的jar。一般这个目录里
面放一些OS dependent的东西,等等。
3,system classloader,应该是AppClassLoader,load classpath里面的,WEB-INF\
lib里面的classes。
jasperreport的东西尽量用system loader来load。ant complaint应该是没设置好的缘
故。
is
【在 l*********s 的大作中提到】![](/moin_static193/solenoid/img/up.png)
: I am trying to compile demo of jasperreport, funny thing is that, if I put
: the appache common logging/beanutil jars in the %JAVA%\lib\ext, compiling is
: OK.
: But if the libraries locate in somewhere else, and referenced through %
: classpath%, ant complains. Why is such a different behavior?
1,bootstrap classloader,load最基本的runtime classes。bootstrap classloader
在Java世界里基本是神一样的class,有着不受Java规则制约的行为。
2,extension classloader,它load你放在java\lib\ext里面的jar。一般这个目录里
面放一些OS dependent的东西,等等。
3,system classloader,应该是AppClassLoader,load classpath里面的,WEB-INF\
lib里面的classes。
jasperreport的东西尽量用system loader来load。ant complaint应该是没设置好的缘
故。
is
【在 l*********s 的大作中提到】
![](/moin_static193/solenoid/img/up.png)
: I am trying to compile demo of jasperreport, funny thing is that, if I put
: the appache common logging/beanutil jars in the %JAVA%\lib\ext, compiling is
: OK.
: But if the libraries locate in somewhere else, and referenced through %
: classpath%, ant complains. Why is such a different behavior?
l*s
9 楼
Thank you, realBull!
m*k
12 楼
maybe some class conflicting, such as what you need is xxx.class ver 3 in
beanutil.jar while some other jar contains xxx.class ver2 .
beanutil.jar while some other jar contains xxx.class ver2 .
S*h
15 楼
Common log use other library (log4J for example) to do the real log job. It
searches certain folder for a logger library and search rules are quite
complicated. So I guess it might be important to sit in CORRECT place. I
think that is one reason lots of new library try to dump it for other log
facade.
searches certain folder for a logger library and search rules are quite
complicated. So I guess it might be important to sit in CORRECT place. I
think that is one reason lots of new library try to dump it for other log
facade.
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