Spring 中 AbstractExcelView 支持根据模板生成Excel文件. 通过设置 view 的 URL 属性指定模板的路径

 注意:
1. 模板需放在 WEB-INF 目录下
2. 指定模板路径时不需要添加扩展名, Spring将自动添加 .xls 到URL 属性中.
3. 在指定URL前需先设置 view 的 ApplicationContext

1. 控制器配置 control-context.xml

 <bean id="beanNameViewResolver"
     class="org.springframework.web.servlet.view.BeanNameViewResolver" />

  <bean id="viewController" class="ViewController">
     <property name="dataModel">
         <ref bean="model-DataModel"/>
     </property>
 </bean>

 <bean id="urlMapping"
     class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
     <property name="mappings">
       <props>
       　　<prop key="/view/*.report">viewController</prop>
     </props>
   </property>
 </bean>

2. Excel视图子类化 ExcelView.java
实现 org.springframework.web.servlet.view.document.AbstractExcelView 类中的 buildExcelDocument方法。

 public class ExcelView extends AbstractExcelView {

     protected void buildExcelDocument(Map<String, Object> model,
             HSSFWorkbook wb, HttpServletRequest request, HttpServletResponse reqponse)
             throws Exception {

         //...
          Object[] datas = (Object[]) model.get("data");
         //...        

         HSSFSheet sheet;
         //get the sheet 1 in template
         sheet = wb.getSheetAt(0);
         //handle this sheet
         //...
     }
 }

3. 控制器 ViewController ViewController.java

 public class ViewController extends MultiActionController {

     private DataModel dataModel;

     public void setDataModel(DataModel dataModel){
         this.dataModel = dataModel;
     }

     public ModelAndView exportToExcel(HttpServletRequest request, HttpServletResponse response) throws Exception {

         Map<String,Object> model=new HashMap<String,Object>();

         Object[] datas;

         datas = dataModel.getDatas.toArray();

         model.put("data", datas);

         ExcelView excelView = new ExcelView();

         excelView.setApplicationContext(this.getWebApplicationContext());
         excelView.setUrl("/WEB-INF/Template");

         return new ModelAndView(excelView,model);
     }
 }

4. web.xml

 <servlet>
     <servlet-name>viewController</servlet-name>
     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
     <init-param>
         <param-name>contextConfigLocation</param-name>
         <param-value>/WEB-INF/config/control-context.xml</param-value>
     </init-param>
     <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
     <servlet-name>viewController</servlet-name>
     <url-pattern>*.report</url-pattern>
  </servlet-mapping>

5. 运行
http://hostname/view/exportToExcel.report