java - play框架全局设置响应头

Question

如何为我的 playframework 项目全局设置 respnose header ？ 我不想为每个 REST 方法添加内容。

    response().setHeader("Access-Control-Allow-Origin", "*");
    response().setHeader("Allow", "*");
    response().setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, DELETE, OPTIONS");
    response().setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Referer, User-Agent");

这是我目前添加到每个方法中的内容。

谢谢

Answer 1

Play 支持filters ，这是一种全局修改 HTTP 请求/响应的方法。

类似于:

public class GlobalHeaders extends Filter {

@Inject
public GlobalHeaders(Materializer mat) {
    super(mat);
}

@Override
public CompletionStage<Result> apply(
        Function<Http.RequestHeader, CompletionStage<Result>> nextFilter,
        Http.RequestHeader requestHeader) {
    return nextFilter.apply(requestHeader).thenApply(result -> {

        return result.setHeader("Access-Control-Allow-Origin", "*")
          .setHeader("Allow", "*")
          .setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, DELETE, OPTIONS")
          .setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Referer, User-Agent");
    });
}

}