使用smartupload.jar实现文件上传
1.将jar包添加到项目中:smartupload.jar
2.准备上传的页面
<form action="toUpload" method="post" enctype="multipart/form-data" >书名:<input type="text" name="bookName"/><br>图片:<input type="file" name="自定义名称"/><br><input type="submit" value="提交"/> </form>注:
- (1)form标签中要添加enctype属性
- (2)提交方式必须是post
3.开始获取数据,保存文件
实例代码：
public void upload(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {try {//上传文件SmartUpload su=new SmartUpload();//获得pageContext对象JspFactory factory=JspFactory.getDefaultFactory();PageContext pagecontext=factory.getPageContext(this,request,response,null,false,1024,true);su.initialize(pagecontext);su.setCharset("utf-8");//实现文件数据的上传su.upload();File file = su.getFiles().getFile(0);//得到文件的基本信息String filename=file.getFileName();String type=file.getContentType();System.out.println("type="+type);String url="uploadfile/"+filename;//将上传文件保存到指定目录file.saveAs(url, SmartUpload.SAVE_VIRTUAL);request.setAttribute("filename",filename);String uname=su.getRequest().getParameter("uname");System.out.println("uname="+uname);request.getRequestDispatcher("success.jsp").forward(request, response);} catch (SmartUploadException e) {// TODO Auto-generated catch blocke.printStackTrace();}
}