Rest API java spring - 将文本和 pdf 上传到 PostgreSQL 数据库（邮递员 - 表单数据）

Question

I am making a REST API in Java spring. I want to make a post request in postman and upload some text and a pdf file to my postgreSQL database. The connection works. I tested it with another endpoint. I tried alot of things but none of them works.

I heard you can do this with postman - Form data.

What I tried: added this to the @PostMapping() --> No success

consumes = MediaType.MULTIPART_FORM_DATA_VALUE

In postman: added Content-type : application/json and Content-type : multipart/form-data

Both of them with no success :(...

Below my restcontroller

@RestController
public class SheetMusicController {

    @Autowired
    SheetMusicRepository sheetMusicRepository;

    @GetMapping("/sheetmusic")
    public List<SheetMusic> index(){
        return sheetMusicRepository.findAll();
    }

    @PostMapping(value = "/sheetmusic")
    public SheetMusic create(@RequestBody Map<String,String> body){
        String title = body.get("title");
        byte[] pdf = "".getBytes();

        SheetMusic sheetMusic = new SheetMusic(title,"","","",pdf);
        return sheetMusic;
    }
}

And a picture of postman Postman

I don't see what I do wrong. I hope you guys can help me out!

Greetings,

Answer 1

Change @Postmapping to @Requestmapping. It should work then.

Answer 2

You should implement a multipart form-data request:

First , you need to add to maven:

<dependency>
    <groupId>commons-fileupload</groupId>
    <artifactId>commons-fileupload</artifactId>
    <version>1.3.1</version>
</dependency>

Second , you need to add this Bean configuration:

@Bean(name = "multipartResolver")
public CommonsMultipartResolver multipartResolver() {
    CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
    multipartResolver.setMaxUploadSize(100000);
    return multipartResolver;
}

Finally , your Post method should be like this:

@PostMapping(value = "/sheetmusic")
public SheetMusic create(@RequestParam("file") MultipartFile file, @RequestParam("title") String title) {
    // Your business
}

NOTE: for the Postman you just need to select the body type form-data and the Content-Type will be set automatically.