批处理管理控制台 - DispatcherServlet 使用 InternalResourceViewResolver 而不是 FreeMarkerViewResolver

Question

我在将 Spring Batch 管理控制台集成到我的应用程序时遇到了问题。

好消息是，当我转到 http://mymachine.com:8080/ReportingManager/batch/configuration 时，我可以进入管理控制台。

但是当我转到 http://mymachine.com:8080/ReportingManager/batch/job-configuration 时，我得到一个 404 和一个错误，说 /batch/jobs 找不到。

我刚刚完成了比较我的应用程序日志和我知道正在运行的 spring-batch-admin-sample 应用程序之间的 org.springframework.web 日志输出差异的练习。

查看日志后，似乎可以找到 Spring Batch 管理控制台的 URL 映射，但 DispatcherServlet 正在尝试使用 InternalResourceViewResolver 而不是 FreeMarkerViewResolver

下面我的应用程序日志显示错误的 ViewResolver 正在用于 /ReportingManager/batch/jobs...

    2014-05-27 20:16:22,770 DEBUG [DispatcherServlet] - DispatcherServlet with name 'Batch Servlet' processing GET request for [/ReportingManager/batch/jobs]
    2014-05-27 20:16:22,770 DEBUG [RequestMappingHandlerMapping] - Looking up handler method for path /jobs
    2014-05-27 20:16:22,770 DEBUG [RequestMappingHandlerMapping] - Returning handler method [public void org.springframework.batch.admin.web.JobController.jobs(org.springframework.ui.ModelMap,int,int)]
    2014-05-27 20:16:22,770 DEBUG [DispatcherServlet] - Last-Modified value for [/ReportingManager/batch/jobs] is: -1
    2014-05-27 20:16:23,598 DEBUG [DispatcherServlet] - Rendering view [org.springframework.web.servlet.view.JstlView: name 'jobs'; URL [/WEB-INF/pages/jobs.jsp]] in DispatcherServlet with name 'Batch Servlet'
    2014-05-27 20:16:23,598 DEBUG [JstlView] - Added model object 'endJob' of type [java.lang.Integer] to request in view with name 'jobs'
    2014-05-27 20:16:23,598 DEBUG [JstlView] - Added model object 'jobs' of type [java.util.ArrayList] to request in view with name 'jobs'
    2014-05-27 20:16:23,598 DEBUG [JstlView] - Added model object 'startJob' of type [java.lang.Integer] to request in view with name 'jobs'
    2014-05-27 20:16:23,598 DEBUG [JstlView] - Added model object 'totalJobs' of type [java.lang.Integer] to request in view with name 'jobs'
    2014-05-27 20:16:23,598 DEBUG [JstlView] - Added model object 'jobName' of type [java.lang.String] to request in view with name 'jobs'
    2014-05-27 20:16:23,598 DEBUG [JstlView] - Forwarding to resource [/WEB-INF/pages/jobs.jsp] in InternalResourceView 'jobs'
    2014-05-27 20:16:23,598 DEBUG [DispatcherServlet] - Successfully completed request

而当我查看 spring-batch-admin-sample 的 long 时，我可以看到 /spring_admin_console/jobs 正在使用 AjaxFreeMarkerView...

[5/27/14 19:57:13:962 EST] 00000023 SystemOut     O 19:57:13,950 DEBUG WebContainer : 0 servlet.DispatcherServlet:693 - DispatcherServlet with name 'Batch Servlet' processing GET request for [/s
pring_admin_console/jobs]
[5/27/14 19:57:13:978 EST] 00000023 SystemOut     O 19:57:13,965 DEBUG WebContainer : 0 annotation.DefaultAnnotationHandlerMapping:221 - Mapping [/jobs] to HandlerExecutionChain with handler [or
g.springframework.batch.admin.web.JobController@52e052e0] and 3 interceptors
[5/27/14 19:57:14:000 EST] 00000023 SystemOut     O 19:57:13,988 DEBUG WebContainer : 0 servlet.DispatcherServlet:769 - Last-Modified value for [/spring_admin_console/jobs] is: -1
[5/27/14 19:57:14:045 EST] 00000023 SystemOut     O 19:57:14,031 DEBUG WebContainer : 0 support.HandlerMethodInvoker:155 - Invoking model attribute method: public java.lang.String org.spring
framework.batch.admin.web.JobController.getJobName(javax.servlet.http.HttpServletRequest)
[5/27/14 19:57:14:091 EST] 00000023 SystemOut     O 19:57:14,078 DEBUG WebContainer : 0 support.HandlerMethodInvoker:173 - Invoking request handler method: public void org.springframework.batch.admin.web.JobController.jobs(org.springframework.ui.ModelMap,int,int)
[5/27/14 19:57:14:125 EST] 00000023 SystemOut     O 19:57:14,113 DEBUG WebContainer : 0 servlet.DispatcherServlet:1045 - Rendering view org.springframework.batch.admin.web.freemarker.AjaxFreeMarkerView: name 'jobs'; URL [/layouts/html/standard.ftl]] in DispatcherServlet with name 'Batch Servlet'
[5/27/14 19:57:14:144 EST] 00000023 SystemOut     O 19:57:14,130 DEBUG WebContainer : 0 freemarker.AjaxFreeMarkerView:328 - Added model object 'springMacroRequestContext' of type [org.springframework.web.servlet.support.RequestContext] to request in view with name 'jobs'
[5/27/14 19:57:14:158 EST] 00000023 SystemOut     O 19:57:14,144 DEBUG WebContainer : 0 freemarker.AjaxFreeMarkerView:328 - Added model object 'startJob' of type [java.lang.Integer] to request i
n view with name 'jobs'
[5/27/14 19:57:14:172 EST] 00000023 SystemOut     O 19:57:14,159 DEBUG WebContainer : 0 freemarker.AjaxFreeMarkerView:328 - Added model object 'totalJobs' of type [java.lang.Integer] to request
in view with name 'jobs'
[5/27/14 19:57:14:186 EST] 00000023 SystemOut     O 19:57:14,172 DEBUG WebContainer : 0 freemarker.AjaxFreeMarkerView:328 - Added model object 'servletPath' of type [java.lang.String] to request
 in view with name 'jobs'
[5/27/14 19:57:14:200 EST] 00000023 SystemOut     O 19:57:14,186 DEBUG WebContainer : 0 freemarker.AjaxFreeMarkerView:328 - Added model object 'jobName' of type [java.lang.String] to request in
view with name 'jobs'
[5/27/14 19:57:14:214 EST] 00000023 SystemOut     O 19:57:14,200 DEBUG WebContainer : 0 freemarker.AjaxFreeMarkerView:328 - Added model object 'jobs' of type [java.util.ArrayList] to request in
view with name 'jobs'
[5/27/14 19:57:14:228 EST] 00000023 SystemOut     O 19:57:14,214 DEBUG WebContainer : 0 freemarker.AjaxFreeMarkerView:328 - Added model object 'titleText' of type [java.lang.String] to request i
n view with name 'jobs'
[5/27/14 19:57:14:242 EST] 00000023 SystemOut     O 19:57:14,228 DEBUG WebContainer : 0 freemarker.AjaxFreeMarkerView:328 - Added model object 'titleCode' of type [java.lang.String] to request i
n view with name 'jobs'
[5/27/14 19:57:14:255 EST] 00000023 SystemOut     O 19:57:14,242 DEBUG WebContainer : 0 freemarker.AjaxFreeMarkerView:328 - Added model object 'endJob' of type [java.lang.Integer] to request in
view with name 'jobs'
[5/27/14 19:57:14:269 EST] 00000023 SystemOut     O 19:57:14,256 DEBUG WebContainer : 0 freemarker.AjaxFreeMarkerView:328 - Added model object 'body' of type [java.lang.String] to request in vie
w with name 'jobs'
[5/27/14 19:57:14:287 EST] 00000023 SystemOut     O 19:57:14,274 DEBUG WebContainer : 0 freemarker.AjaxFreeMarkerView:279 - Rendering FreeMarker template [/layouts/html/standard.ftl] in FreeMark
erView 'jobs'
[5/27/14 19:57:14:909 EST] 00000023 SystemOut     O 19:57:14,895 DEBUG WebContainer : 0 servlet.DispatcherServlet:674 - Successfully completed request

我花了一段时间试图找出正在发生的事情，但不确定。我怀疑我的 web.xml 可能做错了什么。可能与 servlet 的顺序有关。

我将发布我的 web.xml 的摘录，希望有人能看到我做错了什么。

提前感谢您帮我看看这个。

我已经把我的 web.xml 放在这里了。

http://pastebin.com/eBkHMe8g

Answer 1

确保在您的 Web 项目中具有以下文件夹结构：WEB-INF\classes\META-INF\spring\batch\override。并在此文件夹下创建一个新的 .xml 文件。将其命名为您想要的任何名称。文件的内容应该是这样的：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="resourceService" class="org.springframework.batch.admin.web.resources.DefaultResourceService">
        <property name="servletPath" value="/batch" />
    </bean>
</beans>

servletPath 的值需要与web.xml 中的servlet-mapping 匹配。我使用了/batch，因为这是你的。

更多关于这个here。此外，查看Spring Batch Admin source code 确实有帮助。在那个resources-context.xml 中，您可以看到某个SPeL 表达式用于各种servletPath 资源：<prop key="servletPath">#{resourceService.servletPath}</prop>。您需要搜索名为 resourceService 的 bean，查看 its source code，然后您可以在自定义 .xml 文件中为 DefaultResourceService 确定要更改的属性。

稍后编辑：作为一般建议，您的mvc-dispatcher DispatcherServlet 会自动拾取，默认情况下位于/WEB-INF/mvc-dispatcher-servlet.xml 的文件。您将在两个不同的应用程序上下文中拾取并加载 mvc-dispatcher-servlet.xml 下的 bean 两次，因为您将此文件指定为 contextConfigLocation 值之一。那里有一个上下文层次结构，根（由contextConfigLocation 定义）是父级。这个想法是将非 Web（或将由 Web 使用）的 bean 放置在根上下文中，并且 Web 能够“使用”这些 bean。其他方式不太有意义，因为 DAO 或服务类不需要访问网络。