[Seasar-user:3823] Re: Seasar にてNullPointerExceptionが発生する事象について

[[E-MAIL ADDRESS DELETED]]

$BJVEz$,CY$l$^$7$F?=$7Lu$"$j$^$;$s!#(B
$B$R$,$5$s!!$4JVEz$"$j$,$H$&$4$6$$$^$7$?!#(B

$B$d$O$j%"%W%j%1!<%7%g%sB&$+$i(Bnull$B$,EO$5$l$F$$$k$H$7$+8+$($J$$$G$9$h$M!#(B

$B$J$$$H$O;W$&$N$G$9$,!"30It$[E-MAIL ADDRESS DELETED]%U%!%$%k!JNc$($P(Bdicon$B%U%!%$%k!K$K(B
$BFC<l$J5-=R$r$9$k$H%"%W%j%1!<%7%g%s$K(Bnull$B$,CmF~$5$l$k!&!&$J$s$F%1!<%9$O(B
$B$J$$$G$7$g$&$+!)(B

$B2?EY$b?=$7Lu$"$j$^$;$s$,$h$m$7$/$*4j$$$7$^$9!#(B

>$B$R$,$G$9!#(B
>> 
>> $B=i$a$^$7$F!#CS$H?=$7$^$9!#(B
>> 
>> $BK\8=>]$K$D$$$F$O8=:_D4::Cf$H$$$&%9%F!<%?%9$G$"$j!"(B
>> $B7k2LE*$K(BSeasar$B$H$OJL$N$H$3$m$K860x$,$"$k$+$b$7$l$^$;$s!#(B
>> $B$=$&$$$&0UL#$G$O!"BgJQ<:Ni$G$O$"$k$HB8$8$^$9$,!"(B
>> $BK\8=>]$K$D$$$F2?$+$4B8CN$NJ}$,$$$i$C$7$c$$$^$7$?$i!"(B
>> $B$465<x4j$$$?$$$H;W$$$^$9!#(B
>
>> (6) $B%U%l!<%`%o!<%/!'(BSeasar2.2.10
>>                     dao1.0.27
>>                     S2-Struts1.1.5
>> 
>> $B!c8=:_$^$G$[E-MAIL ADDRESS DELETED]!d(B
>>   $B-!(B Web Server$B$N%m%0$K(BHTTP 500$B!JFbIt%(%i!<!K$,=PNO$5$l$F$$$?!#(B
>>   $B-"(B Java$B%3%s%F%J$N%m%0$K$O(BNullPointerException$B$,=PNO$5$l$F$$$?!#(B
>>     $B"M(B Hitachi Web Server$B$O(BCosminexus$B$,(BNullPointerException$B$rJV$9$H$K(BHTTP 500$B!JFbIt%(%i!<!K$rJV$9$?$a!"(B
>> 
>> /* IF aaa.property != null */
>>         $B!&!&!&!&!&(B
>>         $B!&!&!&!&!&(B
>> 
>> $B",(B $B>e5-(Baaa$B$K(Bnull$B$,3JG<$5$l$k$h$&A`:n$9$k$H!"%(%i!<$H$J$k!#!JEvA3$@$,!&!&!K(B
>> $BFbIt!J(BSeasar$B!K$NF0:n$H$7$F$O!"$"$i$+$8$aJQ?t>pJs$r3JG<$7$F$$$k(BMap$B$KBP$7!"(B
>> $BJQ?tL>!JNc$N(B"aaa"$B!K$r%-!<$H$7$F8!:w$r9T$$!"<B:]$N%*%V%8%'%/%H$r(BMap$B$+$i<hF@$7$h$&$H$7$F$$$kLOMM!#(B
>> 
>> $B8!:w$N:]$K$O(Baaa$B$r(BString$B7?$KJQ49(B(toString()$B$r;HMQ(B)$B$7$F!"(B
>> $B8!:w$r9T$*$&$H$7$F$$$k$,!"(Baaa = null$B$G$"$k$?$a!"(Baaa.toString()$B$G(BNullPointerException$B$,(B
>> $BH/@8$9$k!#(B
>> $B!J$J$<(Bnull$B$,F~$C$F$/$k$N$+$O8=:_D4::Cf!#!K(B
>> 
>> $B%m%0(B---------------------------
>> $B"-(BNullPointerException$B$,H/@8$7$F$$$kIU6a$N$_H4?h(B
>> 
>> 4354 2006/04/10 18:10:01.437     HEJB             006E3D60 006FDC0C KDJE39061-E           java.lang.NullPointerException
>> 4355 2006/04/10 18:10:01.437     HEJB             006E3D60 006FDC0C KDJE39061-E           	at org.seasar.dao.context.CommandContextPropertyAccessor.getProperty(CommandContextPropertyAccessor.java:20)
>> 4356 2006/04/10 18:10:01.437     HEJB             006E3D60 006FDC0C KDJE39061-E           	at ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1616)
>
>$B$3$l$O!"(BSeasar$B$H$$$&$h$j!"(BOGNL$B$,=P$7$F$$$^$9$M!#(B
>$B860x$O!"M=A[$5$l$F$$$kDL$j!"0z?t(B($BNc$($P(Baaa)$B$K(Bnull$B$,F~$C$F$$$k>l9g$@$H;W$$$^$9!#(B
>$B%"%W%j%1!<%7%g%s$G2?$i$+$N>l9g$K!"(Baaa($BAjEv(B)$B$K(Bnull$B$[E-MAIL ADDRESS DELETED]$5$l$k>l9g$,$"$k(B
>$B$N$G$O$J$$$G$7$g$&$+!#(B
>
>Yasuo Higa
>The Seasar Foundation