Uploading mulitiple files to server path in Oracle ADF using af:inputFile

Hello All :)

Previously I have posted about uploading and downloading files from server path (Refer this post for more clarification), In that post I have described the process of uploading single file at a time but sometimes we need to upload multiple files at a time and for that requirement we can use same code with little modification


So In this post we'll see that how can we upload multiple files at a time using af:inputFile, Here I am using same sample application that is used in previous post



Default inputFile source looks like this

<af:inputFile label="Select" id="if1" valueChangeListener="#{viewScope.FileUploadDownloadBean.uploadFileVCE}"
                                          autoSubmit="true"/>

To enable multiple files selection in af:inputFile we have to set some properties

<af:inputFile label="Select" id="if1"
valueChangeListener="#{viewScope.FileUploadDownloadBean.uploadFileVCE}"
autoSubmit="true" rows="5" maximumFiles="5"/>

and what rows and maximumFiles properties means ?

rows

int

Yes

an attribute that determines the number of rows in the file list. There will be a scrollbar which will be displayed when the number of files exceeds this number.

maximumFiles

int

Yes

an attribute that is used to restrict the number of files a user can upload. If the user tries to upload more files than specified in maximumFiles then an error is returned. If maximumFiles is less than 1 then the number of files is unlimited.

After setting these properties inputFile looks like this

Now UI part is done , next is code part so to get and upload multiples files from client we have to use a List data structure and then in value change listener we'll traverse that List and upload all files to server path.

ValueChangeListener of af:inputFile- 

    /*****Generic Method to Get BindingContainer**/
    public BindingContainer getBindingsCont() {
        return BindingContext.getCurrent().getCurrentBindingsEntry();
    }

    /**
     * Generic Method to execute operation
     * */
    public OperationBinding executeOperation(String operation) {
        OperationBinding createParam = getBindingsCont().getOperationBinding(operation);
        return createParam;

    }

    /**Method to Upload Multiple Files ,called on ValueChangeEvent of inputFile
     * @param vce
     */
    public void uploadFileVCE(ValueChangeEvent vce) {
        if (vce.getNewValue() != null) {
            //Get File Object from VC Event
            List<UploadedFile> lf = (List<UploadedFile>) vce.getNewValue();

            //Traverse over file list to upload all files
            for (UploadedFile fileVal : lf) {
                //Method to check if this file is uploaded previously or not
                OperationBinding duplOb = executeOperation("checkDuplicateFile");
                duplOb.getParamsMap().put("fileNm", fileVal.getFilename());
                duplOb.execute();
                if (duplOb.getResult() != null && "Y".equalsIgnoreCase(duplOb.getResult().toString())) {

                    System.out.println("Called");
                    //Upload File to path- Return actual server path
                    String path = uploadFile(fileVal);
                    System.out.println(fileVal.getContentType());
                    //Method to insert data in table to keep track of uploaded files
                    OperationBinding ob = executeOperation("setFileData");
                    ob.getParamsMap().put("name", fileVal.getFilename());
                    ob.getParamsMap().put("path", path);
                    ob.getParamsMap().put("contTyp", fileVal.getContentType());
                    ob.execute();

                }
            }
            // Reset inputFile component after upload
            ResetUtils.reset(vce.getComponent());
        }
    }

AMImpl Method to check duplicate file-

    /**Method to check for duplicate files
     * @param fileNm
     * @return
     */
    public String checkDuplicateFile(String fileNm) {
        ViewObject fileVo = this.getFileUpdDwn1();
        Row duplFile[] = fileVo.getFilteredRows("FileName", fileNm);
        if (duplFile.length > 0) {
            return "N";
        } else {
            return "Y";
        }
    }

For other methods and DB table refer previous post Uploading and downloading files from absolute server path
So All done for multiple files upload now run and check application

Sample ADF Application (Jdeveloper 12.1.3)- Download
Cheers :)  Happy Learning