JBoss中的“ javax.servlet.ServletException：非HTTP请求或响应”

Question

我的jboss在尝试运行我的应用程序（春季mvc）时抛出了非描述性错误。它可以正常部署，并且此异常不会告诉我任何有用的信息，因此我真的不知道该怎么办。我无法调试，无法真正做任何事情：

    13：00：01,262 INFO [ServerImpl] JBoss（微型容器）[5.1.0.GA（内部版本：SVNTag = JBoss_5_1_0_GA日期= 200905221053）]从2m：13s：790ms开始

**成功启动**

从浏览器运行应用程序时，会发生以下情况：

13:00:09,456 ERROR [[appServlet]] Servlet.service() for servlet appServlet threw exception
javax.servlet.ServletException: non-HTTP request or response
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:818)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
    at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
    at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
    at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Thread.java:619)

Answer 1

HttpServlet.service(ServletRequest, ServletResponse)当无法将参数分别强制转换为HttpServletRequest和时，就会抛出该错误HttpServletResponse。

这意味着两件事之一：

• 参数的类型错误（不太可能）或
• 某些过滤器使用的是这些类型的错误副本，并使用错误的类加载器加载（例如，如果您servlet-api-x.x.jar使用Webapp 交付了自己的副本）。