spring - Grails 2.4.3升级-Spring Security ACl-SpelExpressionParser

Question

运行应用程序时出现以下错误，编译过程中没有问题。请帮助，如何解决此问题。

ERROR [localhost-startStop-1] 2014-09-26 19:19:19,050 org.codehaus.groovy.grails.web.context.GrailsContextLoaderListener.error(213) : Error initializing the application: Error creating bean with name 'flowBuilderServices': Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'org.springframework.expression.spel.standard.SpelExpressionParser' to required type 'org.springframework.binding.expression.ExpressionParser' for property 'expressionParser'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [org.springframework.expression.spel.standard.SpelExpressionParser] to required type [org.springframework.binding.expression.ExpressionParser] for property 'expressionParser': no matching editors or conversion strategy found
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'flowBuilderServices': Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'org.springframework.expression.spel.standard.SpelExpressionParser' to required type 'org.springframework.binding.expression.ExpressionParser' for property 'expressionParser'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [org.springframework.expression.spel.standard.SpelExpressionParser] to required type [org.springframework.binding.expression.ExpressionParser] for property 'expressionParser': no matching editors or conversion strategy found
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'org.springframework.expression.spel.standard.SpelExpressionParser' to required type 'org.springframework.binding.expression.ExpressionParser' for property 'expressionParser'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [org.springframework.expression.spel.standard.SpelExpressionParser] to required type [org.springframework.binding.expression.ExpressionParser] for property 'expressionParser': no matching editors or conversion strategy found
    ... 4 more
Caused by: java.lang.IllegalStateException: Cannot convert value of type [org.springframework.expression.spel.standard.SpelExpressionParser] to required type [org.springframework.binding.expression.ExpressionParser] for property 'expressionParser': no matching editors or conversion strategy found

Answer 1

您正在使用哪些插件？升级到Grails 2.4.3时我遇到了同样的异常，只是将其范围缩小了(这并不容易)，因为Grails WebFlow插件和ACL插件都设置了一个名为expressionParser的bean，但是每个插件都使用一个不同的类...在Spring Bean的Grails初始化期间，一个覆盖另一个。通过将Web流插件的expressionParser重命名为WebFlowPluginSupport.groovy文件中的flowExpressionParser，我可以解决此异常。您可以在插件目录中搜索“expressionParser”，并查看是否有> 1个插件在使用它。

我已经让webflow插件的人们知道了，这里还有更多细节。
https://jira.grails.org/browse/GPWEBFLOW-109