springMVC configuration file upload

1, file upload
a, introducing dependent
b, spring-mvc.xml profile
C, the configuration page
URL: "$ {} pageContext.request.contextPath / User / testResponseBody",
Data: {},
type: "POST",
dataType : "JSON",
Success: function (Data) {
Alert (Data [0] .username);
Alert (Data [. 1] .username);
}
});

d. After the introduction of static resource static resources must be released


Introducing fileUpload automatically dependent commons-io

commons-fileupload
commons-fileupload
1.3.1






5242880 // necessary steps *********************
d, controller codes
<% -
form file upload premise
1) must be presented in a way POST
2) must form a type: multipart / form-data, form data multifunction
3) must have a file of the form element type =
- %>

/**

• Declare variable parameters to receive data
• • /
    @RequestMapping ( "/ Upload")
    public String Upload (String username, a MultipartFile Upload, the HttpServletRequest Request) {
    // System.out.println (username);
    .. 1 target path //
    // Get the running path project
    String realPath = . Request.getSession () GetServletContext () the getRealPath ( "/ Upload");.
    // determines whether the path exists
    File realfile = new new File (realpath);
    iF {(realFile.exists ()!)
    realFile.mkdirs ();
    } /
    . / 2 to obtain a unique file name (including the extension)
    String uuidName = UUID.randomUUID () toString () the replace ( "-", "");..
    // get the extension: get the file name
    // get the real file name
    string OriginalFilename = upload.getOriginalFilename ();
    // string interception, access to the file extension
    OriginalFilename.substring extendName = String (originalFilename.lastIndexOf () ".");
    System.out.println (extendName);
    // unique file name
    String fileName = uuidName + extendName;
    System.out.println (fileName);
    // file upload
    // transferTo: performing file upload
    @ parameter file: file catalog
    the try {
    upload.transferTo (new new file (realfile, fileName));
    } the catch (IOException E) {
    e.printStackTrace ();
    } R & lt
    eturn "Show" ;
    }