求教关于图片上传的问题！急

你可以使用SmartUpload,来实现这个功能,SmartUpload这个
你可以这样做:
addpic.jsp
<html><body>
<FORM METHOD="POST" ACTION="/uploadserlvet" ENCTYPE="multipart/form-data">
<input name="file1" type="file">
<input type="submit" name="Submit" value="图片添加">
</FORM>
</body>
</html>
servlet的写法如下:
uploadservlet.java: protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
        // Variables
        int count=0;
        SmartUpload mySmartUpload = new SmartUpload();
        try {
          strfilePath="/upload/";//文件上传后的相对路径
          // Initialization
          mySmartUpload.initialize(config,request,response);
          mySmartUpload.setAllowedFilesList"JPG,JPEG,GIF,BMP,jpg,jpeg,gif,bmp");//上传图片文件的扩展名的限制
          mySmartUpload.setMaxFileSize(100000000);//上传文件的最大字节数
         // Upload
         mySmartUpload.upload();
         //strFilepath=m_application.getRealPath(strfilePath);                if (!mySmartUpload.getFiles().getFile(i).isMissing()){
                    String  strFileName= mySmartUpload.getFiles().getFile(i).getFileName();
                 count = mySmartUpload.save(strfilePath);
                }
            }
          request.setAttribute("errorInfo",strFileName);
            getServletContext().getRequestDispatcher("/showpic.jsp").forward(request,response);
            return;
        }catch(Exception e){
            String[] strRet=new String[3];
            strRet[0]="ERROR[-1]";
            strRet[1]="不能上传文件！";
            strRet[2]="";
            request.setAttribute("picFileName",strRet);
            getServletContext().getRequestDispatcher("/addpic.jsp").forward(request,response);
            return;
        }finally{
        }
    }
在showpic.jsp页面中接受上传图片的名字
如:
<html>
<body>
<%String FileName=(String)request.getAttribute("picFileName");%>
<img src="/upload/<%=FileName%>">
</body>
</html>