Spring MVC HTTP状态405 - 不支持请求方法'POST' - Backbone Request

Question

我是Spring MVC的新手,我正在尝试使用Spring MVC + Hibernate从头开始构建一个Web应用程序来提供类似JSON Rest API的东西,在客户端通过Backbone消耗这个API.为此,我开始学习本教程(http://www.mkyong.com/spring-mvc/spring-3-mvc-and-json-example/).

So I have a model Message which will have the following REST API Interface:
GET /api/messages               ( working ok )
GET /api/messages/:id           ( working ok )
DELETE /api/messages/:id        ( working ok )
PUT /api/messages/:id           ( working ok )
POST /api/messages              ( error: (DefaultHandlerExceptionResolver.java:194) - Request method 'POST' not supported)

我预计在通过表单执行请求时,PUT或DELETE请求会发生此问题,但不会发生POST请求.我甚至没有通过表格来处理请求.在客户端,请求通过Backbone完成,如下所示:

new App.Models.Message({ attributeA : 'a', attributeB : 'b' }).save();

我已经尝试在web.xml中添加httpMethodFilter,如其他Stackoverflow问题所示:

 <filter>
    <filter-name>httpMethodFilter</filter-name>
    <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
 </filter>

 <filter-mapping>
    <filter-name>httpMethodFilter</filter-name>
    <servlet-name>mvc-dispatcher</servlet-name>
 </filter-mapping>  

有没有人有同样的问题？

我离开这里我的MessagesController:

@Controller
@RequestMapping("/api/messages")
public class MessagesController {

    @Autowired  
    private MessageService messageService;

    @RequestMapping(method = RequestMethod.GET)
    public @ResponseBody List<Message> getMessagesInJSON(@RequestParam( value = "type", required = false ) String type) {   
        List<Message> messages = messageService.findAll();          
        return messages; 
    }

    @RequestMapping( value = "/{id}", method = RequestMethod.GET )
    public @ResponseBody Message getMessageInJson(@PathVariable Integer id ) {      
        Message message = messageService.findById(id);
        return message;     
    }

    @RequestMapping( value = "/{id}", method = RequestMethod.DELETE )
    @ResponseStatus( value = HttpStatus.NO_CONTENT )
    public void deleteMessage(@PathVariable Integer id ) throws NotFoundException {     
        messageService.delete(id);      
    }

    @RequestMapping( value = "/{id}", method = RequestMethod.PUT )
    @ResponseStatus( value = HttpStatus.NO_CONTENT )
    public void editMessage( @PathVariable Integer id, @RequestBody Message message ) throws NotFoundException {
        message.setId(id);
        messageService.update(message);
    }

    @RequestMapping( value = "/", method = RequestMethod.POST )
    @ResponseStatus(HttpStatus.CREATED)
    public @ResponseBody Message createMessage( @RequestBody Message message ) {        
        return messageService.create(message);
    }

}

非常感谢!

Answer 1

您已经映射/api/messages到getMessagesInJSON仅允许GET请求的方法.您的POST请求将映射到其他路径.

我建议在请求映射中省略value属性createMessage.

@RequestMapping(method = RequestMethod.POST )