Upload pictures on the web page

Create a form in the web page

<form action="/Blog/servlet/Shangchuan" method="post" enctype="multipart/form-data">
       <input type="file" name="image" class="img">
       <input type="submit" value="确认上传" class="blue">
        </form>‘

Do the processing in the servlet

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.jspsmart.upload.File;
import com.jspsmart.upload.SmartUpload;
import com.jspsmart.upload.SmartUploadException;

public class Shangchuan extends HttpServlet{
 private static final long serialVersionUID = 1L;
 public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException, IOException{
  PrintWriter out=response.getWriter();
  SmartUpload smartupload=new SmartUpload();
  try{
  smartupload.initialize(this.getServletConfig(),request,response);
  smartupload.setAllowedFilesList("jpg,PNG,JPG");
  smartupload.upload();
  File file=smartupload.getFiles().getFile(0);
  file.saveAs("/Image/"+file.getFileName(),File.SAVEAS_VIRTUAL);
  out.print("上传成功");
  }
  catch(Exception e){
   out.print("Upload failed, maybe the image format is wrong, temporarily only supports images ending in jpg, JPG, PNG");
  }
  
 }
 
}