我是Spring MVC的新手,正在尝试使用Spring MVC + Hibernate从头开始构建Web应用程序,以提供类似于JSON Rest API的服务,并通过Backbone在客户端消费该API。为此,我已经开始按照这个教程(http://www.mkyong.com/spring-mvc/spring-3-mvc-and-json-example/)进行操作。
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)
我本以为这个问题只会出现在通过表单进行PUT或DELETE请求时,而不是POST请求。我甚至没有通过表单进行请求。在客户端,请求是通过Backbone这样完成的:
new App.Models.Message({ attributeA : 'a', attributeB : 'b' }).save();
我已经尝试按照其他Stackoverflow问题建议在web.xml中添加httpMethodFilter:
<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>
是否有人遇到过同样的问题?
我在这里留下我的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);
}
}
非常感谢您!