Curl 命令不起作用（Spring Boot 项目）

Question

I want to display all messages from MySQL database that start with id = 275. I wrote a curl request I don't know. Maybe the request was written incorrectly. Maybe the query syntax made a mistake -

curl -H "Content-Type: application/json" -d "{ \"messageId\": \"275\" }" localhost:8080/api/unread

But when I run this curl request through the command line, it shows an error.

{"timestamp":"2020-01-06T03:13:07.899+0000","status":405,"error":"Method Not Allowed","message":"Request method 'POST' not supported","trace":"org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' not supported\r\n\tat org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping.handleNoMatch(

My code Input Message class

public class InputMessage {

    private long messageId;

    public InputMessage(long messageId) {
        this.messageId = messageId;
    }

    public InputMessage() {
    }

    public long getMessageId() {
        return messageId;
    }

    public void setMessageId(long messageId) {
        this.messageId = messageId;
    }
}

RestController

public class RestController {

    @Autowired
    TimerTask timerTask;

    @Resource
    private final MessageService messageService;

    public RestController(MessageService messageService) {
        this.messageService = messageService;
    }

    @PostMapping("/api/save")
    public MessageStatus saveMessage(@RequestBody Message chatMessage) {
        return messageService.add(chatMessage);
    }

    @GetMapping("/api/last")
    public String getLasts() {
        return new Gson().toJson(messageService.getLast());
    }

    @GetMapping("/api/unread")
    public void getUnreadMessages() {

        timerTask.run();
    }

    @GetMapping("/api/unread/byid")
    public List<Message> getUnreadById(@RequestBody InputMessage message) {
        return messageService.getUnreadById(message);
    }

Message Service Impl

public class MessageServiceImpl implements MessageService {
    private final MessageRepository repository;
    private final PageRequest lastRequest;

    private List<Long> chekedMessages = new ArrayList<>();


    @Autowired
    public MessageServiceImpl(MessageRepository repository) {
        this.repository = repository;
        lastRequest = new PageRequest(0, 10, Sort.Direction.DESC, "id");
    }

    @Override
    public MessageStatus add(@RequestBody  Message message) {
        if(message == null) {
            System.out.println("Пришел пустой запрос на сохранение данных");

        }
        MessageStatus status = new MessageStatus();
        try {
            repository.save(message);
            status.setMessage("Сообщение успешно сохранено");
        }
        catch (Exception e) {
            status.setMessage("Во время сохранения сообщения произошла ошибка");
        }
        return status;
    }

    @Override
    public List<Message> getAllMessages() {
        return repository.findAll();
    }

    @Override
    public List<Message> getLast() {
        List<Message> result = repository.findAll(lastRequest).getContent();

        return result.stream()
                .sorted(Comparator.comparingLong(Message::getId))
                .collect(Collectors.toList());
    }

    @Override
    public List<Message> getUnreadById(InputMessage message) {
         return repository.getUnreadById(message.getMessageId());
    }



    @Override
    public String getUnreadMessages() {
        List<Message> out = new ArrayList<>();
        List<Message> unchekedMessages = repository.findAll();
        for (Message message: unchekedMessages) {
            if (!chekedMessages.contains(message.getId())) {
                chekedMessages.add(message.getId());
                out.add(message);
            }
        }
        return new Gson().toJson(out);
    }

    @Override
    public void updateMessage(long id, Message message) {
        if (repository.findById(id).isPresent()) {
            message.setId(id);
            repository.save(message);
        }
    }

github https://github.com/fallen3019/vaadin-chat

Answer 1

Looking at your controller and curl request, you are calling /api/unread which is declared as GET request in your RestController#getUnreadMessages() .

Guessing you meant to hit POST /api/save , in that case simply change the curl request to following curl -H "Content-Type: application/json" -d "{ \\"messageId\\": \\"275\\" }" localhost:8080/api/save

If you meant to call /api/unread , as this is GET request that doesn't require any params, you can simply call it as curl -X GET "localhost:8080/api/unread" -H "Content-Type: application/json"

Answer 2

It is pretty clear it thinks you execute a post call not a get call. Please specify -X GET and keep the data in -d as you already do. I'm pretty sure curl assumes -X with -d is POST by default if no otherwise specified.

Answer 3

As per the program code presented, the endpoint /api/unread does only support GET , not POST . To set off a GET via curl, add -X GET :

curl -H "Content-Type: application/json" \
    # -d "{ \"messageId\": \"275\" }" \ # as of now, the body is not used and can be commented-out
    -X GET \ 
    -v \ # enable debug output to see response headers
    localhost:8080/api/unread

Or, alternatively, change the endpooint to /api/save :

curl -H "Content-Type: application/json" \
    -d "{ \"messageId\": \"275\" }" \
    localhost:8080/api/save