smartupLoad实现文件上传(最全) 包会

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：

@WebServlet(value="/upload") public class UploadServlet extends HttpServlet { @Override protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //1创建对象 SmartUpload smartUpload = new SmartUpload(); //2初始化 PageContext pageContext = JspFactory.getDefaultFactory().getPageContext(this, req, resp, null, false, 1024 * 5, true); smartUpload.initialize(pageContext); //3设置编码方式 smartUpload.setCharset("utf-8"); //4上传 try { smartUpload.upload(); } catch (SmartUploadException e) { e.printStackTrace(); } //5保存文件 File file = smartUpload.getFiles().getFile(0); //6得到文件的基本信息 String fileName = file.getFileName(); //7制定服务器保存文件路径 String url="uploadFile/"+fileName; //保存文件 try { file.saveAs(url,File.SAVEAS_AUTO); } catch (SmartUploadException e) { e.printStackTrace(); } // 是否保存成功 req.setAttribute("fileName",fileName); System.out.println(fileName); // 除文件以外的内容如何获取 String uname = smartUpload.getRequest().getParameter("uname"); System.out.println("+uname="+uname); //跳转界面 req.getRequestDispatcher("/success.jsp").forward(req,resp); } }