java Spring Boot：不支持请求方法“POST”
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Spring Boot : Request method 'POST' not supported
提问by dididxb
I am staring working on spring boot and trying a simple Rest Controller. I have two methods using HTTP GET and they work fine. However when I do a HTTP POST it is not working showing : : Request method 'POST' not supported
我正在研究 spring boot 并尝试一个简单的 Rest Controller。我有两种使用 HTTP GET 的方法，它们工作正常。但是，当我执行 HTTP POST 时，它不工作，显示 :: 不支持请求方法“POST”
My Controller code as below:-
我的控制器代码如下：-
enter code here
package com.example.web.api;
import java.math.BigInteger;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import com.example.model.Greeting;
@RestController
public class GreetingController {
private static BigInteger nextId;
private static Map<BigInteger, Greeting> greetingMap;
private static Greeting save(Greeting greeting){
if (greetingMap==null){
greetingMap = new HashMap<BigInteger, Greeting>();
nextId = BigInteger.ONE;
}
greeting.setId(nextId);
nextId=nextId.add(BigInteger.ONE);
greetingMap.put(greeting.getId(), greeting);
return greeting;
}
static {
// First Greeting
Greeting g1 = new Greeting();
g1.setText("Hello World!!");
save(g1);
// Second Greeting
Greeting g2 = new Greeting();
g2.setText("Hola Mundo!!");
save(g2);
}
/*
*
* Issue a GET to view greetings
*
*/
@RequestMapping(
value="/api/greetings",
method=RequestMethod.GET,
produces=MediaType.APPLICATION_JSON_VALUE
)
public ResponseEntity<Collection<Greeting>> getGreetings(){
Collection<Greeting> greetings=greetingMap.values();
return new ResponseEntity<Collection<Greeting>>(greetings, HttpStatus.OK);
}
/*
*
* Issue a GET to view single greeting by id value
*
*/
@RequestMapping(
value="/api/greetings/{id}",
method=RequestMethod.GET,
produces=MediaType.APPLICATION_JSON_VALUE
)
public ResponseEntity<Greeting> getGreeting(@PathVariable("id") BigInteger id){
Greeting greeting = greetingMap.get(id);
if(greeting == null){
return new ResponseEntity<Greeting>(HttpStatus.NOT_FOUND);
}
return new ResponseEntity <Greeting> (greeting, HttpStatus.OK);
}
/*
*
* Create a POST to add a greeting
*
*/
@RequestMapping(
value="/api/greetings/",
method=RequestMethod.POST,
consumes=MediaType.APPLICATION_JSON_VALUE,
produces=MediaType.APPLICATION_JSON_VALUE
)
public ResponseEntity<Greeting> createGreeting(@RequestBody Greeting greeting){
Greeting savedGreeting = save(greeting);
return new ResponseEntity <Greeting> (savedGreeting, HttpStatus.CREATED);
}
/* End of HTTP Methods */
}
Kindly advise , what is wrong with createGreeting Method.
请告知，createGreeting 方法有什么问题。
Kind regards
亲切的问候
回答by Nikolay Rusev
your POST method has a trailing slash /api/greetings/which you missed in your curl call and the other thing you missed is a Content-typeheader. You should say to server what type of data you send.
您的 POST 方法有一个尾部斜杠/api/greetings/，您在 curl 调用中错过了该斜线，而您错过的另一件事是Content-type标题。您应该告诉服务器您发送的数据类型。
curl -X POST -d '{"text":"hello"}' -H "Content-type:application/json" http://localhost:8080/api/greetings/is a working curl call.
curl -X POST -d '{"text":"hello"}' -H "Content-type:application/json" http://localhost:8080/api/greetings/是一个有效的 curl 调用。
回答by polo
You need to modify the Content-Type to json
需要修改Content-Type为json
回答by Saahon
try changing link the value to another, for example:
尝试将值更改为另一个值，例如：
@RequestMapping(
value="/api/greeting",
method=RequestMethod.GET,
produces=MediaType.APPLICATION_JSON_VALUE
)
public ResponseEntity<Greeting> createGreeting(@RequestBody Greeting greeting){
Greeting savedGreeting = save(greeting);
return new ResponseEntity <Greeting> (savedGreeting, HttpStatus.CREATED);
}
