richfaces uploadfile出现event.getUploadItem() item.getData()空值的问题解决方法

在配置文件web.xml中添加如下代码

 

<filter>
  <filter-name>Seam Filter</filter-name>
  <filter-class>org.jboss.seam.servlet.SeamFilter</filter-class>
  <init-param>
   <param-name>createTempFiles</param-name>
   <param-value>false</param-value>
  </init-param>
  <init-param>
   <param-name>maxRequestSize</param-name>
   <param-value>200000</param-value>
  </init-param>
 </filter>