創建CORSFilter后，REST服務不起作用刪除過濾器無法解決問題

Question

我可能需要一些幫助來解決此錯誤。

我的應用程序中有正常工作的REST服務。 我與郵遞員測試了這項服務，並且該服務有效。 昨天，我為應用程序添加了一個Angular前端，並且需要一個CORS過濾器才能訪問Java后端中的REST服務。 進行一些調整后，效果很好。

昨晚我的筆記本電腦認為重新啟動是個好主意，當我今天早上啟動我的應用程序時，REST根本無法正常工作。 stacktrace告訴我：

Warning:   StandardWrapperValve[rest.ApplicationPath]: Servlet.service() for servlet rest.ApplicationPath threw exception
org.jboss.weld.exceptions.UnsatisfiedResolutionException: WELD-001334: Unsatisfied dependencies for type ObjectProvider<FilterProvider> with qualifiers @Default 
    at org.jboss.weld.bean.builtin.InstanceImpl.get(InstanceImpl.java:107)
    at org.glassfish.jersey.jackson.internal.FilteringJacksonJaxbJsonProvider.writeTo(FilteringJacksonJaxbJsonProvider.java:130)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
    at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
    at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
    at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
    at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:711)
    at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:444)
    at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:434)
    at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:329)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
    at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
    at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1606)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:338)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.glassfish.tyrus.servlet.TyrusServletFilter.doFilter(TyrusServletFilter.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:250)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:654)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:593)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:371)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:238)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:480)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:180)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:539)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:593)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:573)
    at java.lang.Thread.run(Thread.java:745)

過濾器如下所示：

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package rest;

import java.io.IOException;
import javax.faces.bean.ApplicationScoped;

import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ContainerResponseFilter;
import javax.ws.rs.ext.Provider;

/**
 *
 * @author Marcel de Groof m.degroof@student.fontys.nl
 */

@Provider
public class CORSFilter implements ContainerResponseFilter{
    @Override
   public void filter(final ContainerRequestContext requestContext,
                      final ContainerResponseContext cres) throws IOException {
      cres.getHeaders().add("Access-Control-Allow-Origin", "*");
      cres.getHeaders().add("Access-Control-Allow-Headers", "origin, content-type, accept, authorization");
      cres.getHeaders().add("Access-Control-Allow-Credentials", "true");
      cres.getHeaders().add("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS, HEAD");
      cres.getHeaders().add("Access-Control-Max-Age", "1209600");
   }
}

似乎引發錯誤的ApplicationPath類如下所示：

package rest;

import javax.enterprise.inject.Model;
import javax.ws.rs.core.Application;

/**
 * Basispath van de applicatie
 * @author Marcel
 */

@javax.ws.rs.ApplicationPath("api")
public class ApplicationPath extends Application{

}

該錯誤表明它缺少帶有限定符@Default的ObjectProvider類型的依賴項。 我真的希望有人能告訴我解決該問題的方法，因為我不確定開始尋找哪個方向。 如果需要提供更多（詳細）信息，請告訴我。

Answer 1

到今天為止，這個問題似乎已經（神奇地）解決了。 故事的相關部分是，除了對我（項目中使用）和RESTEasy api（項目中未使用）之間（對我而言）無法解釋的沖突之外，我對真正的錯誤沒有真正的了解。

解決該問題的措施是：加載項目的備份版本，並將CORS文件管理器放回該項目中。 之后，REST再次起作用，並且依賴性問題似乎已解決。

我仍然真的很想知道為什么項目想要RESTEasy依賴項。