Spring Rest请求方法 'GET '不支持

Question

我正在尝试实现一个 Rest Api，代码看起来正确且简单，但我收到此错误，并且无法找出问题所在。

日志输出以下内容。

2017-10-10 14:49:40.946 WARN 5750 --- [nio-8080-exec-4] o.s.web.servlet.PageNotFound:不支持请求方法“GET”

     @RestController("/report")
     @CrossOrigin(origins = { "http://localhost:4200" })
     public class JasperController {

       @RequestMapping(value = "/allReports", method = { RequestMethod.GET }, produces = "application/json")
         public String allReport() {
                        return "allReports!!!";
                    }

       @RequestMapping(value = "/supportedFields", method = { RequestMethod.GET }, produces = "application/json")
         public List<String> supportedFields() {
                        return Arrays.asList("name", "age", "address", "code", "contract");
        }

   }

Answer 1

这非常简单。 @RestController 的值不是它的映射。这是我犯过很多次的错误。如果您想要 Controller 中所有方法的顶级映射，请在 Controller 类顶部使用 @RequestMapping 进行声明。

@RestController
@RequestMapping("/report")
public class JasperController {

以下是 @RestController 和 @Controller 上的值:

The value may indicate a suggestion for a logical component name, to be turned into a Spring bean in case of an autodetected component.