Question

我正在将一个使用Jawr的Hybris应用程序部署到Tomcat服务器。在启动时，JawrServlet会抛出StackOverflow错误。

很难重现错误，但它总是在处理CSSServlet时发生。记录后不久：

[JawrRequestHandler] Initializing jawr config for request handler named CSSServlet

这就是我在web.xml中配置Servlet的方式：

     <servlet>
        <servlet-name>CSSServlet</servlet-name>
        <servlet-class>net.jawr.web.servlet.JawrServlet</servlet-class>

        <!-- Location in classpath of the config file -->
        <init-param>
            <param-name>configLocation</param-name>
            <param-value>/jawrsetup.properties</param-value>
            <!--<param-value>/jawrTEST.properties</param-value>-->
        </init-param>
        <init-param>
            <param-name>type</param-name>
            <param-value>css</param-value>
        </init-param>
        <init-param>
            <param-name>mapping</param-name>
            <param-value>/jawr-css</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

这是我的控制台日志中发生错误的一部分：

INFO   | jvm 1    | main    | 2013/01/29 11:20:16.081 | 11:20:16,036 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url('/images/bk-ruby/pause.png')
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.082 | 11:20:16,036 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url('/images/bk-ruby/pause-ie.png')
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.082 | 11:20:16,036 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url('/images/bk-ruby/left-hover.png')
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.087 | 11:20:16,036 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url('/images/bk-ruby/left-hover-ie.png')
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.087 | 11:20:16,036 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url('/images/bk-ruby/right-hover.png')
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.087 | 11:20:16,045 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url('/images/bk-ruby/right-hover-ie.png')
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.092 | 11:20:16,045 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url('/images/bk-ruby/play-hover.png')
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.092 | 11:20:16,045 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url('/images/bk-ruby/play-hover-ie.png')
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.092 | 11:20:16,045 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url('/images/bk-ruby/pause-hover.png')
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.093 | 11:20:16,045 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url('/images/bk-ruby/pause-hover-ie.png')
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.097 | 11:20:16,045 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url('/images/bg.png')
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.098 | 11:20:16,046 [WrapperSimpleAppMain] DEBUG [Base64PostProcessorCssImageUrlRewriter] Skip encoding image resource : url("/images/content-bg.png")
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.098 | 11:20:16,057 [WrapperSimpleAppMain] INFO  [Base64ImageEncoderPostProcessor] Base64 Postprocessing done
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.098 | 11:20:16,058 [WrapperSimpleAppMain] DEBUG [AbstractChainedResourceBundlePostProcessor] postprocessing bundle:/bundles/dmlights.css
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 | Jan 29, 2013 11:20:16 AM org.apache.catalina.core.ApplicationContext log
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 | SEVERE: StandardWrapper.Throwable
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 | java.lang.StackOverflowError
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 |     at java.util.regex.Pattern$LazyLoop.match(Unknown Source)
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 |     at java.util.regex.Pattern$GroupTail.match(Unknown Source)
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 |     at java.util.regex.Pattern$CharProperty.match(Unknown Source)
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 |     at java.util.regex.Pattern$Ques.match(Unknown Source)
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 |     at java.util.regex.Pattern$GroupHead.match(Unknown Source)
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 |     at java.util.regex.Pattern$LazyLoop.match(Unknown Source)
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 |     at java.util.regex.Pattern$GroupTail.match(Unknown Source)
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 |     at java.util.regex.Pattern$CharProperty.match(Unknown Source)
INFO   | jvm 1    | main    | 2013/01/29 11:20:16.198 |     at java.util.regex.Pattern$Ques.match(Unknown Source)

Answer 1

我正在使用Jawr 3.3.3和Bootstrap 3.1.0并遇到了同样的问题。解决方案是在 bootstrap.css 中进行小的“修正”即。改变：

a[href]:after {
    content: " (" attr(href) ")";
}
abbr[title]:after {
    content: " (" attr(title) ")";
}

为：

a[href]:after {
    content: " \0028" attr(href) "\0029";
}
abbr[title]:after {
    content: " \0028" attr(title) "\0029";
}

请注意，唯一改变的是开始和结束括号（与css代码对应）。

这种方式语义保持不变，但下颚不会失败。 :) （我很确定这是一个正则表达的东西导致了这个......）

Answer 2

在我的CSS中，我有这个类定义可能导致了这个问题：

.our-price-indicated-pdp-acessories,
.our-price-indicated-cart-dropdown
{
    color: #6E6E6E;
    font-size: 11px;
    line-height: 15px;
    font-weight: bold;
    text-align: center;
}

所以我把它改成了：

.our-priceind-pdpa,
.our-priceind-cartdrop{
    color: #6E6E6E;
    font-size: 11px;
    line-height: 15px;
    font-weight: bold;
    text-align: center;
}

它再次起作用。

但是很难绝对肯定。当类的名称真的很长时，错误并不总是发生。如果你问我，整个问题就是一个奇妙的思绪扭曲。

我的建议是，看看你的CSS，看看你是否有很长的类名，并试着在没有这些CSS类的情况下重新部署应用程序。

Jawr CSSServlet抛出StackOverflowError

2 个答案: