struts中含有支持文件上传功能的包org.apache.struts.upload。可以创建一个包含FormFile类型的属性的ActionForm。如： package cn.rolia.struts.upload; import javax.servlet.http.HttpServletRequest; import org.apache.struts.action.ActionErrors; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionMapping; import org.apache.struts.upload.FormFile; public class UploadForm extends ActionForm { private FormFile theFile; public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) { return null; } public void reset(ActionMapping mapping, HttpServletRequest request) { } public FormFile getTheFile() { return theFile; } public void setTheFile(FormFile theFile) { this.theFile = theFile; } } 然后在对应JSP文件中使用html:file标记。要上传文件，html:form标记的enctype属性必须是” multipart/form-data”且方法必须是POST。如： <body> 文件上传实例 <HR> <center> <html:form action="/upload" method="POST" enctype="multipart/form-data"> select the file you want to upload.<br/> <html:file property="theFile"></html:file><br/> <html:submit></html:submit><html:reset></html:reset> </html:form> </center> </body> 在控制层处理保存上传文件Action里，调用FormFile的getInputStream方法获得上传文件的数据流然后进行保存。
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