问题描述

我尝试使用 Resteasy 3.0.9 中提供的新 CorsFilter.我在此页面底部找到了一个示例:使用 JAX-RS/RESTEasy 实现 CORS 的 Ajax 请求p>

如果我在 getSingletons() (Application 子类的)方法中定义此过滤器，那么我的资源将不再被扫描.这意味着将找不到任何资源并发生以下错误:

javax.ws.rs.NotFoundException:找不到完整路径的资源错误发生

在以下页面上，我找到了描述:javax.ws.rs.NotFoundException:找不到完整路径的资源错误发生

但基本上，此部署选项所做的是扫描应用程序的@Path、@Provider 等注释.原因是 JAX-RS 将首先分别在覆盖的 getClasses() 和 getSingletons() 中查找类和对象.如果然后返回空集，这会告诉 JAX-RS 进行扫描(根据规范).

所以如果我覆盖 getSingletons() 方法，JAX-RS 不会进行扫描?是否有另一种方法来配置此 CorsFilter 并启用资源扫描`?

还有其他方法可以配置此 CorsFilter 并启用资源扫描吗?"

保持扫描的一种方法是实现 javax.ws.rs.core.Feature

import javax.ws.rs.core.Feature;导入 javax.ws.rs.core.FeatureContext；导入 javax.ws.rs.ext.Provider；导入 org.jboss.resteasy.plugins.interceptors.CorsFilter；@Provider公共类 CorsFeature 实现 Feature {@覆盖公共布尔配置(FeatureContext 上下文){CorsFilter corsFilter = new CorsFilter();corsFilter.getAllowedOrigins().add("*");context.register(corsFilter);返回真；}}

此功能将像所有其他 @Provider 和 @Path 一样被扫描.

只用测试

@ApplicationPath("/api")公共类 RestApplication 扩展应用程序 {}

<块引用>

C:>curl -i http://localhost:8080/api/simple -H "Origin:stackoverflow.com"HTTP/1.1 200 正常日期:格林威治标准时间 2015 年 4 月 1 日星期三 12:07:22访问控制允许凭据:true访问控制允许来源:stackoverflow.com内容类型:应用程序/八位字节流内容长度:15服务器:码头(9.2.4.v20141103)

你好响应！

I tried to use the new CorsFilter which is available in Resteasy 3.0.9. I found an example at the bottom of this page: Ajax request with JAX-RS/RESTEasy implementing CORS

If I define this filter in the method getSingletons() (of the Application subclass) , then my Resources don't get scanned anymore. That means that no Resources will be found and the following error occurs:

javax.ws.rs.NotFoundException: Could not find resource for full path Error Occures

On the following page i found a description: javax.ws.rs.NotFoundException: Could not find resource for full path Error Occures

But basically, what this deployment option does is scan for annotations of @Path, @Provider, etc for the application. The reason is that JAX-RS will first look for classes and object in overridden getClasses() and getSingletons(), respectively. If then return empty sets, this tell JAX-RS to do scanning (per the spec).

So JAX-RS doesn't do a scanning if i overwrite the getSingletons() method? Is there another way to configure this CorsFilter and enable the resource scanning`?

"Is there another way to configure this CorsFilter and enable the resource scanning?"

One way to keep the scanning is just to implement a javax.ws.rs.core.Feature

import javax.ws.rs.core.Feature;
import javax.ws.rs.core.FeatureContext;
import javax.ws.rs.ext.Provider;
import org.jboss.resteasy.plugins.interceptors.CorsFilter;

@Provider
public class CorsFeature implements Feature {

    @Override
    public boolean configure(FeatureContext context) {
        CorsFilter corsFilter = new CorsFilter();
        corsFilter.getAllowedOrigins().add("*");
        context.register(corsFilter);
        return true;
    }  
}

This feature will get scanned for just like all other @Providers and @Paths.

Test with only

@ApplicationPath("/api")
public class RestApplication extends Application {
}

C:>curl -i http://localhost:8080/api/simple -H "Origin:stackoverflow.com" HTTP/1.1 200 OK Date: Wed, 01 Apr 2015 12:07:22 GMT Access-Control-Allow-Credentials: true Access-Control-Allow-Origin: stackoverflow.com Content-Type: application/octet-stream Content-Length: 15 Server: Jetty(9.2.4.v20141103)

Hello Response!

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