今天我將我們的grails應用程序從1.0.3升級到1.3.3,當然,事情開始表現怪異。Grails 1.3.3過濾器 - 無論是NullPointerException還是ClassCastException
目前,我正在問的問題是:在web.xml中含有:
<filter>
<filter-name>sitemesh</filter-name>
<filter-class>org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter</filter-class>
</filter>
<filter>
<filter-name>charEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
<init-param>
<param-name>targetBeanName</param-name>
<param-value>characterEncodingFilter</param-value>
</init-param>
<init-param>
<param-name>targetFilterLifecycle</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>charEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>sitemesh</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
這似乎是工作(至少某些頁面加載),但在日誌中有:
Caused by: java.lang.ClassCastException: org.springframework.web.context.request.ServletRequestAttributes cannot be cast to org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequest
at org.codehaus.groovy.grails.web.pages.GroovyPagesServlet.createResponseWriter(GroovyPagesServlet.java:211)
at org.codehaus.groovy.grails.web.pages.GroovyPagesServlet.renderPageWithEngine(GroovyPagesServlet.java:137)
at org.codehaus.groovy.grails.web.pages.GroovyPagesServlet.doService(GroovyPagesServlet.java:122)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
如果我擺脫彈簧過濾器的,我得到一個NullPointerException
:
java.lang.NullPointerException
at org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.doFilterInternal(UrlMappingsFilter.java:136)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.obtainContent(GrailsPageFilter.java:245)
at org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.doFilter(GrailsPageFilter.java:134)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
第一次看,我猜想沒有人設置UrlMappingsFilter
預期的org.codehaus.groovy.grails.WEB_REQUEST
請求屬性。 (導致NPE)
而彈簧servlet(以某種方式出現未被映射,彈簧過濾器映射後)添加了「錯誤」(根據grails)ServletRequestAttributes
。
對上述映射進行重新排序使得它如此,因爲如果春天映射不存在 - 即NPE被拋出。
所以問題是 - 如何繼續。我想我在web.xml中缺少一些重要的映射?
(我有需要的)
<servlet>
<servlet-name>grails</servlet-name>
<servlet-class>org.codehaus.groovy.grails.web.servlet.GrailsDispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- The Groovy Server Pages servlet -->
<servlet>
<servlet-name>gsp</servlet-name>
<servlet-class>org.codehaus.groovy.grails.web.pages.GroovyPagesServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>gsp</servlet-name>
<url-pattern>*.gsp</url-pattern>
</servlet-mapping>