Upload a file using ajax web service and rest

Question

I use the ajax and rest web service to upload files to the server. I grabbed the file upload event and got the file in my jquery method. I need to send an object file to a web service so that I can save the file in db. Here is my jquery code ..

  $scope.selectFile = function (fileObj) {
     if(fileObj!=undefined){
        $.ajax({
            url : "/RestServices/services/uploadFile",
            type : "POST",
            data : fileObj,
            processData: false,
            contentType: false,
            success : function(result) {
                $scope.$apply();
            },
            error : function(xhr, tStatus, err) {
                // alert(err);
            }
        });
     }

I also tried using FormData, but I could not get the file in the web service.

    var formData = new FormData(); 
    formData.append("fileToUpload", fileObj);   

     if(fileObj!=undefined){
        $.ajax({
            url : "/RestServices/services/uploadFile",
            type : "POST",
            data : formData,
            processData: false,
            contentType: false,
            success : function(result) {
                $scope.$apply();
            },
            error : function(xhr, tStatus, err) {
                // alert(err);
            }

        });

Here is my java code in the service

@POST
@Path("/uploadFile")
@Consumes(MediaType.MULTIPART_FORM_DATA)
public void uploadFile(File formData) {     
try {
        System.out.println(formData.getFileName());             
   } catch (Exception e) {
    LOGGER.error("Exception in Upload File Endpoint"+ e.getMessage());
}   
}

If I send the Object file directly without using formData, I get "media type not supported", and if I send formData for maintenance, I get only a temporary file. What data type should be present in ajax and in service methods? How can I upload the downloaded file to the service? Any help would be appreciated.

Answer 1

, :

HTML

 <input type="button" value="Upload document" class="btn btn-xs btn-primary uploadDocumentOnboarding">
 <input id="file" type="file" class="findDocumentOnboarding">

Ajax/Jquery

$(".uploadDocumentGeneral").on("click", function (evt) {

var documentData = new FormData();
documentData.append('file', $('input#file.findDocumentOnboarding')[0].files[0]);
$.ajax({
    url: url,
    type: 'POST',
    data: documentData,
    cache: false,
    contentType: false,
    processData: false,
    success: function (response) {
        alert("Document uploaded successfully.");
    }
});

return false;

});

JAVA

@POST
@Path("upload/{id}")
@Consumes({"application/x-www-form-urlencoded", "multipart/form-data"})

public void addBlob(@PathParam("id") Integer id, @FormDataParam("file") InputStream uploadedInputStream) throws IOException {
    E24ClientTemp entityToMerge = find(id);
    try {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        int read = 0;
        byte[] bytes = new byte[1024];
        while ((read = uploadedInputStream.read(bytes)) != -1) {
            out.write(bytes, 0, read);
        }
        entityToMerge.setTestBlob(out.toByteArray());
        super.edit(entityToMerge);
    }
    catch (IOException e) {
        e.printStackTrace();
    }
}

, , .

Answer 2

ajax. , . , .

jQuery, jQuery File Upload, Dropzone, .

Answer 3

I work as follows:

//JAVASCRIPT

    var objFile = $jQuery("#fileToUpload");
    var file = objFile[0].files[0];
    API.call({
        url : "rest-url/upload",
        type : "POST",
        contentType : "multipart/form-data",
        data: file,
        processData: false
    }); 

//JAVA

@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.APPLICATION_JSON)
@Path("rest-url/upload")
public Response upload(InputStream fileInputStream) throws Exception {
    //here you got your file
    return Response.ok().entity(new Object("response")).build();
}