Spring Boot multiple files upload with multiple objects

Question

I need help I last time create the controller with the single file upload with an object and it's work for me like

My POJO class

@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder({ "file", "data" })
public class FileWithObject<T> {

    @JsonProperty("file")
    private MultipartFile file;
    @JsonRawValue
    @JsonProperty("data")
    private T data;
}

MY REST CONTOLLER

@RequestMapping(value="/filestore/{bucket-uuid}/appsport.com/singleFileUploadWithObject/{folder}",
        method = RequestMethod.POST)
@ResponseBody
// api work
public String singleFileUploadWithObject(
        @PathVariable(name="bucket-uuid", required = true) String bucketUUId,
        @PathVariable(name="folder", required = false) String folder,
        FileWithObject rawData) {
    return pingResponse;
}

My Postman result

That's all work for me. How to send the list of the objects through the postman or is possible to handle that way request like below rest controller

@RequestMapping(value="/filestore/{bucket-uuid}/appsport.com/listOfObjectsWithSingleFile/{folder}", method = RequestMethod.POST)
@ResponseBody
public String listOfObjectsWithSingleFile(
        @PathVariable(name="bucket-uuid", required = true) String bucketUUId,
        @PathVariable(name="folder", required = false) String folder,
        Set<FileWithObject> rawData) {
    return pingResponse;
}

How to handle list of objects

[{
"file": fileobject,
"data": "zyz"
},{
"file": fileobject,
"data": "zyz"
}]

I'm trying to creating the api for this blow task

In the controller annotate rawData method parameter with @RequestParam and in Postman name the file parameteres rawData.file. As a generic hint the request parameters names should match the object structure of the server side objects which will receive the values — user10386912
– user10386912, Commented Dec 14, 2018 at 10:20
my question is how to tackle the request of the list objects under the request param. single file upload I know the way. — Nabeel Ahmed
– Nabeel Ahmed, Commented Dec 14, 2018 at 10:23
if sending one file is working, then you need to add a property of type List<MultipartFile> in the FileWithObject. Something similar with @JsonProperty("file") private MultipartFile file; but the type should be a collection and the name of @JsonProperty should be something different then file — user10386912
– user10386912, Commented Dec 14, 2018 at 10:28

Nabeel Ahmed · Accepted Answer · 2018-12-26 08:07:51Z

2

I have done this by use of Meta-Data concept there are few changes I did in controller and bean

Controller

@RequestMapping(value="/filestore/{bucket-uuid}/appsport.com/listOfObjectsWithSingleFile/{folder}",
        method = RequestMethod.POST)
@ResponseBody
public String listOfObjectsWithSingleFile(
        @PathVariable(name="bucket-uuid") String bucketUUId, @PathVariable(name="folder") String folder,
        FileWithObject objects) { // change this Set<FileWithObject> rawData to FileWithObject objects
    return pingResponse;
}

Bean

@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder({ "file", "files", "data" })
public class FileWithObject<T> {

    @JsonProperty("file")
    private MultipartFile file;
    @JsonProperty("files")
    private List<MultipartFile> files;
    @JsonRawValue
    @JsonProperty("data")
    private T data;

    // work like (meta-data)
    List<FileWithObject> rawData;
    // getter setter
}

Image's For Request

Note:- I'm Still looking for this issue handle this in a blow way

@RequestMapping(value="/filestore/{bucketuuid}/appsport.com/listOfObjectsWithSingleFile/{folder}", method = RequestMethod.POST)
@ResponseBody
public String listOfObjectsWithSingleFile(@PathVariable(name="bucket-uuid", required = true) String bucketUUId,
    @PathVariable(name="folder", required = false) String folder,Set<FileWithObject> rawData) {
    return pingResponse;
}

hope it helps some one

answered Dec 26, 2018 at 8:07

Nabeel Ahmed

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1 Comment

Nabeel Ahmed Over a year ago

full code of all possible file upload with spring github.com/NABEEL-AHMED-JAMIL/file-uploader

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