单文件上传【下载、删除】

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搞了几天的成果拿出来晒下，文件上传下载中web开发中很常见，删除的例子网上却不是太多，本文实现类多文件和单文件（同一个jsp页面上的不同需求）的上传、下载和删除的功能。不扯蛋了，看下面的代码···

单文件上传下载删除jsp：

<s:file name="upload" theme="simple" cssStyle="width:50%"></s:file><s:if test="null!=xmsjbz.sjsfj"> <s:property value="xmsjbz.sjsfj" />  <a href="<%=path %>/sjps/download.action?fileName=<s:property value="xmsjbz.sjsfj" />">下载</a> <a href="<%=path %>/sjps/singleDelete.action?fileName=<s:property value="xmsjbz.sjsfj" />&id=<s:property value="PBase.projectId"/>">删除</a></s:if>

单文件上传action：

//单文件上传if(null!=upload){String dstPath = ServletActionContext.getServletContext().getRealPath(UPLOADDIR)+ "//" + this.getUploadFileName(); File dstFile = new File(dstPath); gsXmsjbz.setSjsfj(this.getUploadFileName());copy(this.upload, dstFile); }//单文件上传private static void copy(File src, File dst) {InputStream in = null; OutputStream out = null; try {in = new BufferedInputStream(new FileInputStream(src), BUFFER_SIZE); out = new BufferedOutputStream(new FileOutputStream(dst),BUFFER_SIZE); byte[] buffer = new byte[BUFFER_SIZE]; int len = 0; while ((len = in.read(buffer)) > 0) {out.write(buffer, 0, len); }} catch (Exception e) {e.printStackTrace(); } finally {if (null != in) {try {in.close(); } catch (IOException e) {e.printStackTrace(); }}if (null != out) {try {out.close(); } catch (IOException e) {e.printStackTrace(); }}}}

其中upload是jsp页面中<s:file name="upload" />这点大家应该都清楚，文件上传到基本的东西也不写了，网上大把大把的是。

单文件删除：

public String singleDelete(){id = request.getParameter("id");if(id!=null&&id.length()>0){PBaseset = rwsService.getRwsByProjectId(Long.parseLong(id));}gsXmsjbz = PBaseset.getGsXmsjbz();String fileName = request.getParameter("fileName");String path = ServletActionContext.getServletContext().getRealPath(""); String myfilePath = path + "//upload"+"//" + fileName; File myfile = new File(myfilePath); if(myfile.exists()){gsXmsjbz.setSjsfj(null);myfile.delete();}xmsjbzService.save(gsXmsjbz);return SUCCESS;}

文件下载和多文件的下载一样，在下一篇中记录。待续···