Simple implementation of Ajax upload and preview,

Simple implementation of Ajax upload and preview,

1. upload an image asynchronously and preview the most simple ajax method.

Html:

<! DOCTYPE html> 
Servlet:
protected void doPost(HttpServletRequest request, HttpServletResponse response)      throws ServletException, IOException {    DiskFileItemFactory factory = new DiskFileItemFactory();        ServletFileUpload upload = new ServletFileUpload(factory);        String path = request.getServletContext().getRealPath("/upload");    String name = null;    try {      List<FileItem> items = upload.parseRequest(request);      for (FileItem item : items) {        if(item.isFormField()){          System.out.println(item.getFieldName() + ": " + item.getString());        } else {          name = item.getName();          item.write(new File(path,name));        }      }      PrintWriter out = response.getWriter();      out.print("{");      out.print("url:\"" + name +"\"");      out.print("}");          } catch (Exception e) {      e.printStackTrace();    }  }
2. Here An ajaxupload. js will be used, which is a lot more online.
The above is all the simple implementation of Ajax Image Upload and preview provided by xiaobian. I hope it will be helpful to you and provide more support for helping customers ~