seam上传与下载（2）

为圆满完成任务，这里展示AttachmentHome.java 和 AttachmentList.java代码：

 

 import org.jboss.seam.annotations.Name; import org.jboss.seam.framework.EntityQuery; @Name("attachmentList") public class AttachmentList extends EntityQuery { @Override public String getEjbql() { return "select attachment from Attachment attachment"; } }

 

import org.jboss.seam.annotations.Name; import org.jboss.seam.annotations.Begin; import org.jboss.seam.annotations.web.RequestParameter; import org.jboss.seam.framework.EntityHome; import org.domain.knowledgebase.entity.Attachment; @Name("attachmentHome") public class AttachmentHome extends EntityHome<Attachment> { @RequestParameter Long attachmentId; @Override public Object getId() { if (attachmentId==null) { return super.getId(); } else { return attachmentId; } } @Override @Begin public void create() { super.create(); } }

 

 

剩下的事情就是定义出错处理以及在components.xml文件中multipart filter。

在pages.xml中增加：

<exception class="org.jboss.seam.web.FileUploadException"> <redirect view-id="/error.xhtml"> <message>#{org.jboss.seam.handledException.message}</message> </redirect> </exception>

 

components.xml中增加:

 

xmlns:web="http://jboss.com/products/seam/web" ... http://jboss.com/products/seam/web http://jboss.com/products/seam/web-2.0.xsd ... <web:multipart-filter create-temp-files="true" max-request-size="1000000" url-pattern="*.seam" />

 

可以将以上内容结合到你自己的web程序。