CODEWITHSUNDEEP
mongodbspring-bootpostmanspring-restcontrollerget-request
Steve Rogers
Steve Rogers

Reputation: 1

Id getting changed in spring boot request

I have created a project with spring boot and MongoDB as database. I am trying to hit a get request to fetch the data that I have saved in the database. For fetching that I am passing an id from the from the request but the id that I am getting in the RestController method is different. Please tell me why that is the case.

Here is the object with objectId in the database:

 {
    _id: ObjectId('66d49f49199a3f1a71d67fc8'),
    title: 'Johnny',
    content: 'Flame On!',
    _class: 'net.engineeringDigest.journalApp.entity.JournalEntry'
 }

Object in the mongodb database

This is the GET request:

http://localhost:8080/journalV2/id?id=66d49f49199a3f1a71d67fc8

GET Reuqest

Here I am passing the id as 66d49f49199a3f1a71d67fc8

This is the RestController method with the Get Mapping

@GetMapping("/id")
    public JournalEntry getJournalEntryById(ObjectId id) {
        return journalEntryService.findById(id).orElse(null);
}

RestController Method with Get Mapping

And the id I am getting in the method is a random one everytime. For eg:

66d5b4596a652065f5f0624d

I am not sure what to change in this. I have other method with GetMapping for which this is working:

enter image description here

But I want the above way to work too.

Upvotes: 0

Views: 48

Answers (2)

Hari Prasath V
Hari Prasath V

Reputation: 17

In the given GET Request

http://localhost:8080/journalV2/id?id=66d49f49199a3f1a71d67fc8

the id is sent as a parameter.

Therefore you have to alter the GetMapping like this:

@GetMapping("/id")
public JournalEntry getJournalEntryById(@RequestParam("id") ObjectId id)
{
    return journalEntryService.findById(id).orElse(null);
}

The @RequestParam annotation is used to obtain the parameters from the Http requests.

You can refer this for more information about @RequestParam.

Upvotes: 0

SamPaul Isaac
SamPaul Isaac

Reputation: 178

Looks like, the issue lies in the way the id is extracted from the URL and converted to a Java object in the GET request method.

Use the @PathVariable annotation to bind the id from the URL to the method parameter.

Updated code,

@GetMapping("/{id}")
    public JournalEntry getJournalEntryById(@PathVariable ObjectId id) {
    return journalEntryService.findById(id).orElse(null);
    }

Upvotes: 0

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