即使在用@crossorigin(Origins=“*”）注释控制器之后，跨源请求也会被阻止？

Question

我有一个SpringBoot控制器，如下所示

@CrossOrigin(origins="*")
public class FormController {
      @PostMapping(path="/basicForm")
 public String postResponseController(
              @RequestBody FormDomain loginForm) {
        System.err.println("basic form method called");
         return "file transfer completed successfully";
     }
}

public class FormDomain {
     private MultipartFile fileInput;

    public MultipartFile getFileInput() {
        return fileInput;
    }

    public void setFileInput(MultipartFile fileInput) {
        this.fileInput = fileInput;
    }
    }

 onClickSubmit(data) {
        this.http.post("http://localhost:8080/basicForm", data).subscribe( (ob)=>(console.log(ob)));
      }

Access to XMLHttpRequest at 'http://localhost:8080/basicForm' from origin 'http://localhost:4200' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Answer 1

必须在FormController中添加@restController

@controller是@component类的专门化，允许通过类路径扫描自动检测实现类。而@restcontroller是@controller的专门化，它消除了对@responsebody的需要。您可以参考@controller,