SPRINGMVC Learning--File upload

• Brief introduction

　　File upload is one of the common requirements in web development, SPRINGMVC file upload is integrated, it can be easily and quickly developed.

• resolution of multi-part types in SPRINGMVC

When you submit data for enctype= "Multipart/form-data" in a page form , you need to SPRINGMVC parse the data for the multipart type. Configure The multipart type resolver in springmvc.xml .

1 <!--File Upload -2     <BeanID= "Multipartresolver"3 class= "Org.springframework.web.multipart.commons.CommonsMultipartResolver">4         <!--set the maximum size of the uploaded file to 5MB -5         < Propertyname= "Maxuploadsize">6             <value>5242880</value>7         </ Property>8     </Bean>

• Add jar to upload image

Edge Resolution internal Use the jar below to upload pictures.

　

• Create a picture virtual directory store picture

Configure the picture virtual directory on Tomcat and add it under Tomcat under conf/server.xml :

1 <  docBase= "F:\develop\upload\temp"  path= "/pic"  reloadable = "false" />

Access http://localhost:8080/pic to access images under F:\develop\upload\temp.

• Controller code

1 //Product Modification Submission2@RequestMapping ("/edititemsubmit")3      PublicString edititemsubmit (items items, Multipartfile picturefile)throwsexception{4         5         //Original file name6String Picturefile_name =picturefile.getoriginalfilename ();7         //New file name8String NewFileName = Uuid.randomuuid (). toString () +picturefile_name.substring (Picturefile_name.lastindexof ("."));9         Ten         //Upload Image OneFile Uploadpic =NewJava.io.File ("f:/develop/upload/temp/" +newfilename); A          -         if(!uploadpic.exists ()) { - uploadpic.mkdirs (); the         } -         //write files to disk - Picturefile.transferto (uploadpic); -     ... +}

SPRINGMVC Learning--File upload