CODEWITHSUNDEEP
javascriptjqueryspringweb-servicesgrails
Michael J. Lee
Michael J. Lee

Reputation: 12406

Using a GET to POST data to a restfull api

I'm trying to do GET that retrieves data from a URL and then a POST to a RESTful api. The get call seems to work okay but the server sees nothing in the file parameter. I have verified that the GET call is return pdf stream data and that it is placing it in the FormData arg.

Here is the complete call

function upload(key, url){

    var file;
    /* get data from url */
    $.ajax({
        url: url,
        type: 'GET',
        async: false,
        cache: false,
        dataType : 'text',
        contentType : 'application/pdf',
        success: function( data ) {
            file = data;
        },
        error: function(xhr, status, error) {
            console.log("error logging: "+  error);
        }
    });

    /* send data to api */
    var data = new FormData();
    data.append("key", key);
    data.append("file", file); //<-- this has pdf stream data

    $.ajax({
        url: ROOT_URL + "/api/account/upload", 
        type: 'POST',
        cache: false,
        async: false,
        enctype: 'multipart/form-data',
        processData: false,
        contentType: false,
        data: data,
        success: function( data ) {
            console.log("Uploaded!");
        },
        error: function(xhr, status, error) {
            console.log("error logging: "+  error);
        },
        dataType: "json"
    });
};

Here is the server side (grails + spring + jaxrs)

@POST
@Path('upload')
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces('application/json')
String upload(@Context HttpServletRequest request){
    GrailsWebRequest w = WebUtils.retrieveGrailsWebRequest()
    MultipartFile multipartFile = w.getRequest().getFile('file');

    println("request:" + request)
    println("multipartFile:" + multipartFile)
    println("parameterMap:" + w.getRequest().getParameterMap() )

    return ['okay':'uploaded'] as JSON
}

Which currently prints out:

request:org.grails.jaxrs.web.RequestWrapper@448593df
multipartFile:null
parameterMap:[file:[], key:[c07fc0974ebb4f3a8fc21e3d002152d4]]

Upvotes: 0

Views: 215

Answers (1)

John M Fecko
John M Fecko

Reputation: 105

Looks like when the POST call is happening, the variable file doesn't have a value yet. Since you are wanting everything after GET call to occur after the server has returned data, you should move that code into a separate function that is called upon success.

Upvotes: 2

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