发现某种情况下EL表达式与Java的表达式不一致

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注：以下只写出主要的代码，其他略

1）
代码如下
        System.out.println(2+(-3));
        ElValue val = El.eval("2+(-3)");
        System.out.println(val.get());

控制台显示如下
-1
log4j:WARN No appenders could be found for logger (org.nutz.resource.Scans).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" org.nutz.el.ElException: Unexcept symbol "3" nearby 
: 2+(-3
    at org.nutz.el.impl.NutElAnalyzer.analyze(NutElAnalyzer.java:103)
    at org.nutz.el.impl.normalizer.LeftParenthesisNormalizer.normalize(LeftParenthesisNormalizer.java:14)
    at org.nutz.el.impl.NutElAnalyzer.analyze(NutElAnalyzer.java:113)
    at org.nutz.el.El.compile(El.java:105)
    at org.nutz.el.El.compile(El.java:85)
    at org.nutz.el.El.eval(El.java:118)
    at org.nutz.el.El.eval(El.java:130)
    at testEL.main(testEL.java:12)

2）
代码如下
        System.out.println(2+(-3));
        ElValue val = El.eval("2+(-3)");
        System.out.println(val.get());

控制台显示如下
-1
log4j:WARN No appenders could be found for logger (org.nutz.resource.Scans).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" org.nutz.el.ElException: I don't know how to handle 
char '-'
    at org.nutz.el.impl.NutElSpliter.splite(NutElSpliter.java:62)
    at org.nutz.el.El.compile(El.java:96)
    at org.nutz.el.El.compile(El.java:85)
    at org.nutz.el.El.eval(El.java:118)
    at org.nutz.el.El.eval(El.java:130)
    at testEL.main(testEL.java:12)

Original issue reported on code.google.com by ywjno....@gmail.com on 26 May 2011 at 8:26

[GoogleCodeExporter]

例子2）里面的代码写错了，抱歉

正确的如下
        System.out.println(2+-3);
        ElValue val = El.eval("2+-3");
        System.out.println(val.get());

PS：貌似没法直接在iss里面更改内容么？

Original comment by ywjno....@gmail.com on 26 May 2011 at 8:29

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[deleted comment]

[GoogleCodeExporter]

继续在来一个会出错的例子
代码
        System.out.println(-3*-3);
        ElValue val = El.eval("-3*-3");
        System.out.println(val.get());

控制台显示如下
9
log4j:WARN No appenders could be found for logger (org.nutz.resource.Scans).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" org.nutz.el.ElException: I don't know how to handle 
char '-'
    at org.nutz.el.impl.NutElSpliter.splite(NutElSpliter.java:62)
    at org.nutz.el.El.compile(El.java:96)
    at org.nutz.el.El.compile(El.java:85)
    at org.nutz.el.El.eval(El.java:118)
    at org.nutz.el.El.eval(El.java:130)
    at testEL.main(testEL.java:17)

貌似el表达式里面有负号的话都不怎么好使

Original comment by ywjno....@gmail.com on 3 Jun 2011 at 8:03

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的确,不知道是不是不支持呢

Original comment by wendal1985@gmail.com on 3 Jun 2011 at 12:58

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貌似是NutElSpliter类的splite方法里面把“-”当成了运算符而没�
��到还有表示负数的意思

Original comment by ywjno....@gmail.com on 8 Jun 2011 at 2:17

[GoogleCodeExporter]

在新版EL中已经将这个问题解决了

Original comment by juq...@gmail.com on 30 Jun 2011 at 6:14

• Changed state: Fixed