struts2上传和下载文件study

文件上传：

1、JSP中提交method="post" enctype="multipart/form-data" 的表单

2、Action中接收file,fileFileName, fileContentType文件参数

3、  savedFile = new File("E:\\File", fileFileName);   file.renameTo(savedFile);

文件下载：

1、点击下载   <s:a href="struts/downloadFile">下载</s:a>

2、获取文件路径     public InputStream getDownloadFile() throws Exception{this.fileName = "test.jpg" ;
         　　 return ServletActionContext.getServletContext().getResourceAsStream("upload/"+this.fileName) ;}

3、Action result 配置 <result name="success" type="stream"> 
               <param name="contentType">text/plain</param> 
               <param name="contentDisposition">attachment;fileName="${fileName}"</param> 
               <param name="inputName">downloadFile</param> 
               <param name="bufferSize">1024</param> 
           </result>