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java - 带有过滤链: java. lang.IllegalStateException的GlassFish问题:PWC3990:此响应已调用getWriter()

为了获得EAR部署，我们需要升级一个老的Web应用程序以使其在GlassFish 3而不是Tomcat下运行(选择了Glassfish，因为它是引用JEE 6的实现)。

不幸的是，很快就发现确保用户登录的机制无法正常工作，并且提示说getWriter()已经被调用(很可能是正确的)，我无法弄清楚原因。

方法是在完整的JSP文件集上设置过滤器，以检查用户是否登录，如果没有，则使用filterChain.doFilter(servletRequest, servletResponse);重定向到登录页面。用户状态(包括凭据)存储在 session 作用域中的所谓 Controller 对象中，该对象由登录验证Java代码设置。

来自Glassfish的堆栈跟踪:

java.lang.IllegalStateException: PWC3990: getWriter() has already been called for this response
    at org.apache.catalina.connector.Response.getOutputStream(Response.java:676)
    at org.apache.catalina.connector.ResponseFacade.getOutputStream(ResponseFacade.java:205)
    at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:176)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
    at com.XXX.LoggedInToXXXFilter.doFilter(LoggedInToXXXFilter.java:61)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
....

web.xml代码段
<?xml version="1.0"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<description>
    XXX provides a web interface for a given user.
</description>
<display-name>
XXX
</display-name>
<context-param>
    <param-name>javax.faces.CONFIG_FILES</param-name>
    <param-value>/WEB-INF/online-faces-config.xml</param-value>
</context-param>
<context-param>
    <param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
    <param-value>true</param-value>
</context-param>

<listener>
    <listener-class>
        org.apache.myfaces.webapp.StartupServletContextListener
    </listener-class>
</listener>
<servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>
    javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
</servlet-mapping>

<session-config>
    <!-- idle time in minutes before user is automatically logged out by the container -->
    <session-timeout>30</session-timeout>
</session-config>
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<filter>
    <filter-name>MyFacesExtensionsFilter</filter-name>
    <filter-class>
        org.apache.myfaces.webapp.filter.ExtensionsFilter
    </filter-class>
    <init-param>
        <param-name>maxFileSize</param-name>
        <param-value>1m</param-value>
        <!-- description>Set the size limit for uploaded files.
            Format: 10 - 10 bytes
            10k - 10 KB
            10m - 10 MB
            1g - 1 GB
            </description-->
    </init-param>
</filter>

<!-- extension mapping for adding <script/>, <link/>, and other resource tags to JSF-pages  -->
<filter-mapping>
    <filter-name>MyFacesExtensionsFilter</filter-name>
    <!-- servlet-name must match the name of your javax.faces.webapp.FacesServlet entry -->
    <servlet-name>Faces Servlet</servlet-name>
</filter-mapping>

<!-- extension mapping for serving page-independent resources (javascript, stylesheets, images, etc.)  -->
<filter-mapping>
    <filter-name>MyFacesExtensionsFilter</filter-name>
    <url-pattern>/faces/myFacesExtensionResource/*</url-pattern>
</filter-mapping>

<filter>
    <description>Ensure user is logged in</description>
    <filter-name>LoggedInToXXXFilter</filter-name>
    <filter-class>
        com.XXX.servlet.filters.LoggedInToXXXFilter
    </filter-class>
    <init-param>
        <param-name>signon_page</param-name>
        <param-value>/login.jsf</param-value>
    </init-param>
    <init-param>
        <param-name>autologout_page</param-name>
        <param-value>/autologout.jsp</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>LoggedInToXXXFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
<!-- filter>
    <filter-name>extensionsFilter</filter-name>
    <filter-class>org.apache.myfaces.component.html.util.ExtensionsFilter</filter-class>
    <init-param>
    <param-name>uploadMaxFileSize</param-name>
    <param-value>100m</param-value>
    </init-param>
    <init-param>
    <param-name>uploadThresholdSize</param-name>
    <param-value>100k</param-value>
    </init-param>
    </filter-->
<!-- filter-mapping>
    <filter-name>extensionsFilter</filter-name>
    <url-pattern>*.jsf</url-pattern>
    </filter-mapping>
    <filter-mapping>
    <filter-name>extensionsFilter</filter-name>
    <url-pattern>/faces/*</url-pattern>
    </filter-mapping-->
<!-- error-page>
    <exception-type>java.lang.IllegalArgumentException</exception-type>
    <location>/WEB-INF/jsp/IllegalArgumentException.jsp</location>
    </error-page-->
<error-page>
    <exception-type>java.lang.RuntimeException</exception-type>
    <location>/WEB-INF/jsp/RuntimeException.jsp</location>
</error-page>
<!-- error-page>
    <exception-type>com.transaxiom.axsWHSweb.struts.action.UserIsNotLoggedInException</exception-type>
    <location>/WEB-INF/jsp/UserIsNotLoggedInException.jsp</location>
    </error-page-->
<error-page>
    <exception-type>
        com.XXX.struts.action.SecurityViolationException
    </exception-type>
    <location>/WEB-INF/jsp/SecurityViolationException.jsp</location>
</error-page>
<error-page>
    <exception-type>
        com.XXX.logic.UncheckedCommunicationException
    </exception-type>
    <location>/WEB-INF/jsp/CommunicationException.jsp</location>
</error-page>
<error-page>
    <exception-type>
        com.XXX.logic.ConnectionNotCreatedException
    </exception-type>
    <location>
        /WEB-INF/jsp/ConnectionNotCreatedException.jsp
    </location>
</error-page>
<!-- error-page>
    <exception-type>com.XXX.logic.UncheckedConnectionNotCreatedException</exception-type>
    <location>/WEB-INF/jsp/ConnectionNotCreatedException.jsp</location>
    </error-page-->
<!-- filter>
    <filter-name>MyFacesExtensionsFilter</filter-name>
    <filter-class>org.apache.myfaces.component.html.util.ExtensionsFilter</filter-class>
    <init-param>
    <param-name>maxFileSize</param-name>
    <param-value>20m</param-value>
    </init-param>
    </filter>
    <filter-mapping>
    <filter-name>MyFacesExtensionsFilter</filter-name>
    <url-pattern>*.faces</url-pattern>
    </filter-mapping-->
</web-app>

从LoggedInToXXXFilter.java过滤代码:

(堆栈跟踪发生在filterChain.doFilter(servletRequest, servletResponse)行中。
public void doFilter(final ServletRequest servletRequest, final ServletResponse servletResponse,
        final FilterChain filterChain) throws IOException, ServletException {
    boolean ok = false;
    if (servletRequest instanceof HttpServletRequest) {
        HttpServletRequest request = (HttpServletRequest) servletRequest;

        String servletPath = request.getServletPath();
        if ((servletPath.equals(signOnPage) == true) || servletPath.endsWith(".css") || servletPath.equals(autologoutPage)) {
            ok = true;
        } else {
            Controller controller = Controller.getControllerFromSession(request.getSession(false));
            if ((controller != null) && controller.isSignedOn()) {
                ok = true;
            }

        }
        if (ok) {
            filterChain.doFilter(servletRequest, servletResponse);
        } else {
            // Hop to the sign on page.
            // http://forum.java.sun.com/thread.jspa?threadID=548967&messageID=2676856
            ServletContext servletContext = filterConfig.getServletContext();

            URL url = new URL(new URL(request.getRequestURL().toString()), (request.getContextPath() + signOnPage));
            ((HttpServletResponse) servletResponse).sendRedirect(url.toString());
        }
    } else {
        // Only for http requests
        filterChain.doFilter(servletRequest, servletResponse);
    }
}

可能的原因是我们仍然带来了我们自己的JSF库(带有Tomahawk的MyFaces 1.1.4)吗？

编辑:用完整(但匿名)web.xml更新了问题。请注意，有很多注释掉的东西。我将其保留以免意外删除重要信息

编辑:尝试了sun-web-app配置文件，发现并没有什么不同。有趣的是，登录后，登录页面会引发异常，但我可以手动导航到主页(也是JSF)，并看到另外两个功能良好的页面。除了引发异常的登录页面之外，还有三个页面。

我最初的想法是，分离功能将是t-taglib(用于“战斧”)，但是经过快速调查后似乎并非如此，因为某些工作页面使用了“战斧”，而有些则没有。

编辑:比较两个jsp页，其中一个失败，另一个未显示任何明显的差异，应引起此。正如已经指出的那样，有报道称Tomahawk 1.1出现了这个错误，我们使用的是1.1.3，我现在已经升级到最新的Apache Myfaces Tomahawk 1.1.9，它似乎已经解决了该问题(没有sun-网络应用)。

最佳答案

我没有完整的解释(即，我不知道getWriter的调用位置)，但这可能是Tomahawk 1.1.3/MyFaces 1.1.4中的错误，如TOMAHAWK-579或MYFACES-1310(具有相同的IllegalStateException)的Jira问题中所述根据Servlet规范)。请注意，正如您所遇到的那样，此错误似乎与容器有关。

因此，请尝试使用更新版本的Tomahawk/MyFaces(请参阅compatibility matrix)，或获取与patch中的修复相对应的r442340并将其应用于Tomahawk的分支1.1.3。后一种选择也许是最简单的选择。至少，这是我会尝试的。

10-06 09:50
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