Play Framework 2.5.12 - 在 application.conf 中设置多个过滤器

Play Framework 2.5.12 - set multiple filter in application.conf

我正在使用 Play Framework 2.5.12(Java 版本)。 当我声明过滤器 (Filters1) 并在 application.conf:

中设置以下配置时
 play.http.filters = my.filter.path.Filters1

它工作正常。

但是我有两个过滤器:

  1. Filters1 扩展了 DefaultHttpFilters class
  2. Filters2 扩展过滤器 class

在 Play Framework 2.6 中,解决方案是:

play.http.filters += my.filter.path.Filters1
play.http.filters += my.filter.path.Filters2

我试过了,但它在 Play Framework 2.5 中不起作用。 你的解决方案是什么?

最终我无法在application.conf中处理这个问题。
解决方案:
您必须将过滤器作为参数传递到 Filters1 的构造函数中,并将其设置为 EssentialFilters。
这是我的过滤器 1 class :

import com.rh.ot.web.core.filters.CustomFilter;
import play.Environment;
import play.filters.gzip.GzipFilter;
import play.filters.headers.SecurityHeadersFilter;
import play.http.DefaultHttpFilters;
import play.mvc.EssentialFilter;
import javax.inject.Inject;
import javax.inject.Singleton;

@Singleton
public class Filters1 extends DefaultHttpFilters {

    private final Environment env;
    private EssentialFilter[] filters;

    @Inject
    public Filters(Environment env, GzipFilter gzipFilter, SecurityHeadersFilter securityHeadersFilter, Filters2 filters2) {
        super(securityHeadersFilter);
        this.env = env;
        filters = new EssentialFilter[]{gzipFilter.asJava(), filters2.asJava()};
    }

    public EssentialFilter[] filters() {
        return filters;
    }
}

和过滤器 2 class:

import akka.util.ByteString;
import play.libs.streams.Accumulator;
import play.mvc.EssentialAction;
import play.mvc.EssentialFilter;
import play.mvc.Result;
import javax.inject.Inject;
import java.util.concurrent.Executor;

public class Filters2 extends EssentialFilter {

    private final Executor executor;

    @Inject
    public Filters2(Executor executor) {
        super();
        this.executor = executor;
    }

    @Override
    public EssentialAction apply(EssentialAction next) {
        return EssentialAction.of(request -> {
            request.headers().put("Strict-Transport-Security", new String[]{"max-age=31536000; includeSubDomains"});
            Accumulator<ByteString, Result> accumulator = next.apply(request);
            return accumulator.map(result -> result, executor);
        });
    }
}