Struts 2 file upload, struts File Upload

Struts 2 file upload, struts File Upload

To obtain the original name of the uploaded File, you need to define a String type attribute. The attribute name must be *** FileName, and *** is the name of the File attribute. Similarly, to obtain the MIME type of the file, you must define a *** ContentType String attribute.

Upload a single file

Public class UploadAction extends ActionSupport {private File image; // private String imageFileName; // File name private String imageContentType; // File type public String execute () throws Exception {String realpath = ServletActionContext. getServletContext (). getRealPath ("/images"); FileOutputStream fos = null; FileInputStream FD = null; try {// create a file output stream System. out. println (getSavePath (); fos = new FileOutputStream (realpath + "\" + getImageFileName (); // create a file upload stream (FS = newFileInputStream (getImage ()); byte [] buffer = new byte [1024]; int len = 0; while (len = Fi. read (buffer)> 0) {fos. write (buffer, 0, len) ;}} catch (Exception e) {System. out. println ("File Upload Failed"); e. printStackTrace () ;}finally {close (fos, FS) ;}return SUCCESS;} public File getImage () {return image;} public void setImage (File image) {this. image = image;} public String getImageFileName () {return imageFileName;} public void setImageFileName (StringimageFileName) {this. imageFileName = imageFileName;} public String getImageContentType () {return imageContentType;} public void setImageContentType (StringimageContentType) {this. imageContentType = imageContentType ;}}

 

Upload multiple files

Import java. io. file; import java. io. IOException; import java. util. list; import org. apache. commons. io. fileUtils; import org. apache. struts2.ServletActionContext; import com. opensymphony. xwork2.ActionSupport; public class TagUploadListAction extends ActionSupport {private static final long serialVersionUID = 1L; private String name; // upload the set text private List of multiple files <File> upload; /// private List of multiple types of uploaded files <Stri Ng> uploadContextType; // a collection of file names for multiple uploaded files. private List <String> uploadFileName; public String getName () {return name;} public void setName (String name) {this. name = name;} public List <File> getUpload () {return upload;} public void setUpload (List <File> upload) {this. upload = upload;} public List <String> getUploadContextType () {return uploadContextType;} public voidsetUploadContextType (List <Strin G> uploadContextType) {this. uploadContextType = uploadContextType;} public List <String> getUploadFileName () {return uploadFileName;} public voidsetUploadFileName (List <String> uploadFileName) {this. uploadFileName = uploadFileName;} public String execute () {// put the uploaded file in the specified path String path = ServletActionContext. getServletContext (). getRealPath ("/WEB-INF/uploadList"); // write to the specified path File file = new Fi Le (path); // if the specified path does not exist, create if (! File. exists () {file. mkdirs () ;}// read the obtained object set cyclically and place it in the specified path for (int I = 0; I <upload. size (); I ++) {try {// list set get (I) to obtain the index FileUtils. copyFile (upload. get (I), new File (file, uploadFileName. get (I);} catch (IOException e) {// TODO Auto-generated catchblock e. printStackTrace () ;}return SUCCESS ;}}