cURL – POST request examples

Some cURL POST request examples for self reference.

1. Normal POST

1.1 To POST without data.

$ curl -X POST http://localhost:8080/api/login/

1.2 To POST with data.

$ curl -d "username=mycareerrepublic&password=abc" http://localhost:8080/api/login/

1.3 Spring REST to accept normal POST data.

@PostMapping("/api/login")
public ResponseEntity<?> login(@RequestParam("username") String username,
                                @RequestParam("password") String password) {
    //...
}

@PostMapping("/api/login")
public ResponseEntity<?> login(@ModelAttribute Login login) {
    //...
}

2. POST + Multipart

To POST with a file, add this -F file=@"path/to/data.txt"

2.1 Upload a file

$ curl -F file=@"path/to/data.txt" http://localhost:8080/api/upload/

2.2 Upload multiple files, with extra fields :

$ curl -F extraField="abc" -F files=@"path/to/data.txt" -F files=@"path/to/data2.txt"  http://localhost:8080/api/upload/multi/

2.3 Spring REST to accept POST Multipart data.

@PostMapping("/api/upload")
public ResponseEntity<?> uploadFile(
        @RequestParam("file") MultipartFile uploadfile) {
    //...
}

@PostMapping("/api/upload/multi")
public ResponseEntity<?> uploadFiles(
        @RequestParam("extraField") String extraField,
        @RequestParam("files") MultipartFile[] uploadfiles) {
    //...
}

@PostMapping("/api/upload/multi2")
public ResponseEntity<?> uploadFiles2(
        @ModelAttribute UploadModel model) {
    //...
}

3. POST + JSON

To POST with JSON data, add this -H "Content-Type: application/json"

3.1 On Windows, escape the double quotes

c:\> curl -H "Content-Type: application/json" -X POST -d {\"username\":\"mycareerrepublic\",\"password\":\"abc\"} http://localhost:8080/api/login/

3.2 For *nix or Mac OSX, add a single quote

$ curl -H "Content-Type: application/json" -X POST -d '{"username":"mycareerrepublic","password":"abc"}' http://localhost:8080/api/login/

3.3 Spring REST to accept POST JSON data.

@PostMapping("/api/login")
public ResponseEntity<?> login(@RequestBody Login login) {
    //..
}

References

cURL – DELETE request examples

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About Mariano

I'm Ethan Mariano a software engineer by profession and reader/writter by passion.I have good understanding and knowledge of AngularJS, Database, javascript, web development, digital marketing and exploring other technologies related to Software development.