cURL – JSONデータをSpring RESTに投稿する
この記事では、cURLコマンドを使用してJSONデータをSpring RESTAPIにPOSTする方法を示します。
1. Spring REST
ログインを検証するためのシンプルなSpring REST API。
LoginController.java
package com.example.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
@Controller
public class LoginController {
private final Logger logger = LoggerFactory.getLogger(LoginController.class);
@PostMapping("/api/login")
public ResponseEntity login(@RequestBody Login login) {
logger.debug("login : {}", login);
//validate login here
return new ResponseEntity("Successfully login", new HttpHeaders(), HttpStatus.OK);
}
}
Login.java
package com.example.controller;
public class Login {
String username;
String password;
//getters and setters
}
2. cURL Post JSON
上記のRESTAPIをテストするには、cURLコマンドを使用して次のようなJSONデータを投稿できます。
2.1 On Windows, you need to escape the double quotes
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c:\> curl -H "Content-Type: application/json" -X POST -d {\"username\":\"example\",\"password\":\"abc\"} http://localhost:8080/api/login/
Successfully login
2.2 For *nix or Mac OSX, add a single quote like this :
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$ curl -H "Content-Type: application/json" -X POST -d '{"username":"example","password":"abc"}' http://localhost:8080/api/login/
Successfully login
2.3 --help
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$ curl --help ... -d HTTP POST data -H Pass custom header LINE to server -X Specify request command to use
2.4 Display detail with curl -v
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c:\> curl -v -H "Content-Type: application/json" -X POST -d {\"username\":\"example\",\"password\":\"abc\"} http://localhost:8080/api/login/
Note: Unnecessary use of -X or --request, POST is already inferred.
* timeout on name lookup is not supported
* Trying ::1...
* TCP_NODELAY set
* Connected to localhost (::1) port 8080 (#0)
> POST /api/login/ HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.52.1
> Accept: */*
> Content-Type: application/json
> Content-Length: 38
>
* upload completely sent off: 38 out of 38 bytes
< HTTP/1.1 200
< Content-Type: text/plain;charset=UTF-8
< Content-Length: 18
< Date: Thu, 26 Jan 2017 08:00:03 GMT
<
Successfully login* Curl_http_done: called premature == 0
* Connection #0 to host localhost left intact