Spring Data Rest-如何在@RepositoryEventHandler中接收标头 [英] Spring Data Rest - How to receive Headers in @RepositoryEventHandler

问题描述

我正在使用最新的Spring Data Rest，并且正在处理事件"创建前".我的要求是还要捕获提交给模型"客户端"的 POST 端点的HTTP标头.但是， RepositoryEventHandler 的接口不会公开该信息.

I'm using the latest Spring Data Rest and I'm handling the event "before create". The requirement I have is to capture also the HTTP Headers submitted to the POST endpoint for the model "Client". However, the interface for the RepositoryEventHandler does not expose that.

@Component
@RepositoryEventHandler
public class ClientEventHandler {

  @Autowired
  private ClientService clientService;

  @HandleBeforeCreate
  public void handleClientSave(Client client) {
    ...
    ...
  }
}

我们如何处理事件并捕获HTTP标头?我想访问使用 @RequestHeader HttpHeaders标头的Spring MVC之类的参数.

How can we handle events and capture the HTTP Headers? I'd like to have access to the parameter like Spring MVC that uses the @RequestHeader HttpHeaders headers.

推荐答案

您可以简单地将请求自动关联到EventHandler的字段

You can simply autowire the request to a field of your EventHandler

@Component
@RepositoryEventHandler
public class ClientEventHandler {
    private  HttpServletRequest request;

    public ClientEventHandler(HttpServletRequest request) {
        this.request = request;
    }

    @HandleBeforeCreate
    public void handleClientSave(Client client) {
        System.out.println("handling events like a pro");
        Enumeration<String> names = request.getHeaderNames();
        while (names.hasMoreElements())
            System.out.println(names.nextElement());
    }
}

在给定的代码中，我使用了构造函数注入，我认为这是最干净的方法，但是Field或Setter注入也应该可以正常工作.

In the code given I used Constructor Injection, which I think is the cleanest, but Field or Setter injection should work just as well.

我实际上找到了关于stackoverflow的解决方案:

I actually found the solution on stackoverflow: Spring: how do I inject an HttpServletRequest into a request-scoped bean?

哦，我刚刚注意到@Marc在评论中提出了这个建议……但我实际上尝试了:)

Oh, and I just noticed @Marc proposed this in thecomments ... but I actually tried it :)

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