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我目前正試圖擴展企業項目的Spring Batch Admin。我已經將基本的SBA設置集成到了我的項目中，但我希望添加一些新功能。我想添加的功能是我在網上找到的here。到目前爲止，我遇到的一件事是，當試圖添加新的Controller和ftl模板時，該模型存在將Controller/Model綁定到視圖的問題。Freemarker的彈簧批量管理自定義問題不能提取模型屬性
我希望你能幫助我的是需要額外的配置來擴展SBA（相對一步一步）。我對Spring或Spring Batch並不陌生，但我對Freemarker非常陌生。似乎有一些關於Freemarker在傳遞給模型時從Controller中獲取屬性的疑惑。
到目前爲止，我有我想要使用的ftl模板（從SBA的標準模板中選擇）。這基本上是在春季批次管理員-manager.jar發現默認的FTL文件的一個修改後的版本：
<#import "/spring.ftl" as spring />
<@spring.bind "model"/>
<div id="job-triggers">
<h2>${MODEL_ATTRIBUTE_SEARCH_RESULT_MESSAGE}</h2>
<p/>
<#if fireTimes??>
<table title="Future Job Executions"
class="bordered-table">
<tr>
<th>Job Name</th>
<th>Date</th>
</tr>
<#list fireTimes as execution>
<#if execution_index % 2 == 0>
<#assign rowClass="name-sublevel1-even" />
<#else>
<#assign rowClass="name-sublevel1-odd" />
</#if>
<tr class="${rowClass}">
<#assign execution_url><@spring.url relativeUrl="${servletPath}/jobs/${execution.jobName?c}"/></#assign>
<td>${execution.jobName}</td>
<td>${execution.date}</td>
</tr>
</#list>
</table>
<#if startJobExecution??>
<ul class="controlLinks">
<#assign executions_url><@spring.url relativeUrl="${servletPath}/jobs/executions"/></#assign>
<li>Rows: ${startJobExecution}-${endJobExecution} of ${totalJobExecutions}</li>
<#if nextJobExecution??><li><a href="${executions_url}?startJobExecution=${nextJobExecution?c}&pageSize=${pageSize!30}">Next</a></li></#if>
<#if previousJobExecution??><li><a href="${executions_url}?startJobExecution=${previousJobExecution?c}&pageSize=${pageSize!30}">Previous</a></li></#if>
<!-- TODO: enable pageSize editing -->
<li>Page Size: ${pageSize!30}</li>
</ul>
</#if>
</#if>
然後，我有具有ModelMap參數的GET請求控制器到我把不同屬性與model.addAttribute（「someName」，someObject）：
@RequestMapping(value = "/", method = RequestMethod.GET)
public String index(@ModelAttribute("model") ModelMap model) throws SchedulerException, ParseException {
Scheduler scheduler = appCtx.getBean(SchedulerFactoryBean.class).getObject();
Calendar cal = Calendar.getInstance();
Date from = cal.getTime();
cal.add(Calendar.DATE, 1);
Date to = cal.getTime();
List<FireTime> fireTimes = getFiretimesForTriggers(scheduler, from, to);
Collections.sort(fireTimes);
model.addAttribute("fireTimes", fireTimes);
if(fireTimes.isEmpty()) {
model.addAttribute(MODEL_ATTRIBUTE_SEARCH_RESULT_MESSAGE,"No firetimes found between " + DATE_FORMAT.format(from) + " and " + DATE_FORMAT.format(to));
} else {
model.addAttribute(MODEL_ATTRIBUTE_SEARCH_RESULT_MESSAGE, fireTimes.size() + " firetimes found between" + DATE_FORMAT.format(from) + " and " + DATE_FORMAT.format(to));
}
return INDEX_VIEW;
}
除了這兩個文件，我真的沒有任何額外的配置，除了新視圖的定義我的servlet-config.xml：
<import resource="classpath:/applicationContext.xml"/>
<import resource="classpath*:/META-INF/spring/batch/servlet/resources/*.xml" />
<import resource="classpath*:/META-INF/spring/batch/servlet/manager/*.xml" />
<context:component-scan base-package="com.basepackage.where.my.controller.components.are" />
<bean name="firetimesView" parent="standard">
<property name="attributes">
<props merge="true">
<prop key="body">/firetimesView.ftl</prop>
<prop key="titleCode">fire.times.title</prop>
<prop key="titleText">Fire Times</prop>
</props>
</property>
</bean>
我遇到的問題是在FreeMarker給出錯誤的參考模型組件是無效引用：
freemarker.core.InvalidReferenceException: Expression MODEL_ATTRIBUTE_SEARCH_RESULT_MESSAGE is undefined on line 5, column 11 in firetimesView.ftl.
freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:124)
freemarker.core.Expression.getStringValue(Expression.java:118)
freemarker.core.Expression.getStringValue(Expression.java:93)
freemarker.core.DollarVariable.accept(DollarVariable.java:76)
freemarker.core.Environment.visit(Environment.java:209)
freemarker.core.MixedContent.accept(MixedContent.java:92)
freemarker.core.Environment.visit(Environment.java:209)
freemarker.core.Environment.include(Environment.java:1482)
freemarker.core.Include.accept(Include.java:169)
freemarker.core.Environment.visit(Environment.java:209)
freemarker.core.MixedContent.accept(MixedContent.java:92)
freemarker.core.Environment.visit(Environment.java:209)
freemarker.core.Environment.process(Environment.java:189)
freemarker.template.Template.process(Template.java:237)
org.springframework.web.servlet.view.freemarker.FreeMarkerView.processTemplate(FreeMarkerView.java:366)
org.springframework.web.servlet.view.freemarker.FreeMarkerView.doRender(FreeMarkerView.java:283)
org.springframework.web.servlet.view.freemarker.FreeMarkerView.renderMergedTemplateModel(FreeMarkerView.java:233)
org.springframework.batch.admin.web.freemarker.AjaxFreeMarkerView.renderMergedTemplateModel(AjaxFreeMarkerView.java:107)
org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:167)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:263)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.web.filter.ShallowEtagHeaderFilter.doFilterInternal(ShallowEtagHeaderFilter.java:73)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
我也有需要進行setter注入必要的getter/setter方法和訪問來自變量視圖。關於爲什麼Freemarker無法提取我添加到地圖中的屬性的任何想法？任何幫助，將不勝感激！