By CaesarChang             

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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);

    }
}


smartupLoad实现文件上传(最全) 包会_git