浏览，上传？？？

第一副图：
点击浏览后，出现第二幅图：这个浏览的代码怎么写啊，怎么能浏览到系统中的文件的呢???如果可能，给一个完整的代码最好（包括上传的）!

解决方案 »

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这个是本机的文件吧，不是服务器的文件！<input type="file"> 这个就可以。
<input type="file">
就可以实现lz需要的两步
但是具体的实现机制  可以使用 fileupload.jar包来实现
或者使用smartupload包
具体实现，goole搜索
我刚做过这个，首先第一个页面是一个JSP页面，然后在编写一个servlet类，将内容提交到Servlet类处理。
JSP页面应该好做，我把Servlet类给你吧！文件名是UploadServlet.java 祝你成功！
package cServlet;import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;/**
*内容可以根据实际需要做适当修改
* @author KingKong
*/
public class UploadServlet extends HttpServlet {
   public static final int MAX_SIZE=1024*1024*2;//上传文件的大小限制，最大2M
   public static final String FILE_DIR="D:/上传的文件/";//上传文件存储路径
    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            out.println("<style type=text/css></style>");

            out.println("<html>");
            out.println("<head>");
            out.println("<title>文件上传</title>");
            out.println("</head>");
            out.println("<body>");

            out.println("</body>");
            out.println("</html>");

        } finally {
            out.close();
        }
    }     // <editor-fold defaultstate="collapsed" desc="HttpServlet 方法。">
    /**
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }     /**
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse res)
    throws ServletException, IOException {
        DataInputStream dis=new DataInputStream(req.getInputStream());
        res.setCharacterEncoding("UTF-8");
        PrintStream ps=new PrintStream(res.getOutputStream());
        String content=req.getContentType();
        if(content!=null && content.indexOf("multipart/form-data")!=-1){
            int reqSize=req.getContentLength();
            byte[] data=new byte[reqSize];
            int bytesRead=0;
            int totalBytesRead=0;
            int sizeCheck=0;
            while(totalBytesRead<reqSize){
                sizeCheck=totalBytesRead+dis.available();
                if(sizeCheck>MAX_SIZE){
                    ps.println("<h1 align=center>对不起，文件太大不能上传……</h1>");
                    return;
                }
                bytesRead=dis.read(data,totalBytesRead,reqSize);
                totalBytesRead+=bytesRead;
            }
            String dataString=new String(data,"UTF-8");
            dataString=dataString.substring(dataString.indexOf("filename=\""));
            String filePath=dataString.substring(0, dataString.indexOf("Content-Type:"));
            dataString=dataString.substring(dataString.indexOf("Content-Type:")+1);
            dataString=dataString.substring(dataString.indexOf("\n")+1);
            dataString=dataString.substring(2, dataString.lastIndexOf("\n")-1);
            dataString=dataString.substring(0, dataString.lastIndexOf("\n")-1);
            writeFile(dataString.getBytes("UTF-8"),FILE_DIR+getFileName(filePath));
            ps.println("<h1 align=center>恭喜你，文件上传成功……</h1>");
        }
    }
    public boolean writeFile(byte[] data,String path){
        File f=null;
        FileOutputStream fos=null;
        try{
            f=new File(path);
            f.createNewFile();
            fos=new FileOutputStream(f);
            fos.write(data, 0, data.length);
        }catch(FileNotFoundException e){
            return false;
        }catch(IOException e){
            return false;
        }finally{
            try{
                fos.close();
            }catch(IOException e){
                return false;
            }
        }
        return true;
    }    public String getFileName(String arg){
        String path=arg.substring(arg.indexOf("\"")+1,arg.lastIndexOf("\"") );
        path=path.substring(path.lastIndexOf("\\")+1);
        return path;
    }    /**
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>}
我博客里写的有完整的Struts上传文件的代码，点下面地址去看下http://blog.csdn.net/cjg520jie/archive/2009/04/13/4068578.aspx