问题描述
我正在开发一个带有 Rest 接口和 dart 前端的 Spring Boot 应用程序.
I am developing a Spring Boot application with a Rest interface and a dart fronted.
XMLHttpRequest 确实执行了一个完全正确处理的 OPTIONS 请求.在此之后,发出最终的 GET ("/products") 请求并失败:
The XMLHttpRequest does execute a OPTIONS request which is handled totally correct. After this, the final GET ("/products") request is issued and fails:
请求的资源上不存在Access-Control-Allow-Origin"标头.Origin 'http://localhost:63343' 因此不允许访问.
No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:63343' is therefore not allowed access.
经过一些调试后,我发现了以下内容:AbstractHandlerMapping.corsConfiguration 为除 RepositoryRestHandlerMapping 之外的所有子类填充.在 RepositoryRestHandlerMapping 中,在创建时不存在/设置 corsConfiguration,因此它不会被识别为 cors 路径/资源.
=> 没有附加 CORS 标头
这可能是问题吗?我该如何设置?
After some debugging I have found the following:The AbstractHandlerMapping.corsConfiguration is populated for all Subclasses except RepositoryRestHandlerMapping. In the RepositoryRestHandlerMapping no corsConfiguration is present / set at creation time and so it won't get recognized as cors path / resource.
=> No CORS headers attached
Could that be the problem? How can I set it?
配置类:
@Configuration
public class RestConfiguration extends RepositoryRestMvcConfiguration {
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**").allowCredentials(false).allowedOrigins("*").allowedMethods("PUT", "POST", "GET", "OPTIONS", "DELETE").exposedHeaders("Authorization", "Content-Type");
}
...
}
我什至尝试为每个注释设置 Cors:
I even tried to set the Cors per annotation:
@CrossOrigin( methods = RequestMethod.GET, allowCredentials = "false")
public interface ProductRepository extends CrudRepository<Product, String> {
}
原始请求标头:
GET /products HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Cache-Control: max-age=0
authorization: Basic dXNlcjpwYXNzd29yZA==
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/43.0.2357.130 Chrome/43.0.2357.130 Safari/537.36
Content-Type: application/json
Accept: */*
Referer: http://localhost:63343/inventory-web/web/index.html
Accept-Encoding: gzip, deflate, sdch
Accept-Language: de-DE,de;q=0.8,en-US;q=0.6,en;q=0.4
原始响应头:
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: application/hal+json;charset=UTF-8
Transfer-Encoding: chunked
Date: Thu, 30 Jul 2015 15:58:03 GMT
使用的版本:弹簧靴 1.3.0.M2弹簧 4.2.0.RC2
Versions used:Spring Boot 1.3.0.M2Spring 4.2.0.RC2
我想念什么?
推荐答案
确实,在 Spring Data REST 2.6 (Ingalls) 之前,只有 Spring MVC 创建的 HandlerMapping
实例 WebMvcConfigurationSupport
和使用 @CrossOrigin
注释的控制器可以识别 CORS.
Indeed, before Spring Data REST 2.6 (Ingalls) only HandlerMapping
instances created by Spring MVC WebMvcConfigurationSupport
and controllers annotated with @CrossOrigin
were CORS aware.
但是现在 DATAREST-573 已经修复,RepositoryRestConfiguration
现在公开了一个 getCorsRegistry()
用于全局设置,并且还识别存储库上的 @CrossOrigin
注释,因此这是推荐的方法.有关具体示例,请参阅 https://stackoverflow.com/a/42403956/1092077 答案.
But now that DATAREST-573 has been fixed, RepositoryRestConfiguration
now exposes a getCorsRegistry()
for global setup and @CrossOrigin
annotations on repositories are also recognized so this is the recommended approach. See https://stackoverflow.com/a/42403956/1092077 answer for concrete examples.
对于必须坚持使用 Spring Data REST 2.5 (Hopper) 或以前版本的人,我认为最好的解决方案是使用基于过滤器的方法.您显然可以使用 Tomcat、Jetty 或 这个,但请注意 Spring Framework 4.2 也提供了一个 CorsFilter
使用与 @CrossOrigin
和 addCorsMappings(CorsRegistry registry)
方法相同的 CORS 处理逻辑.通过传递 UrlBasedCorsConfigurationSource
实例到 CorsFilter
构造函数参数,您可以轻松获得与 Spring 原生 CORS 全局支持一样强大的功能.
For people that have to stick to Spring Data REST 2.5 (Hopper) or previous versions, I think the best solution is to use a filter based approach. You could obviously use Tomcat, Jetty or this one, but be aware that Spring Framework 4.2 also provides a CorsFilter
that use the same CORS processing logic that @CrossOrigin
and addCorsMappings(CorsRegistry registry)
approaches. By passing an UrlBasedCorsConfigurationSource
instance to the CorsFilter
constructor parameter, you could easily get something as powerful as Spring native CORS global support.
如果您使用的是 Spring Boot(支持 Filter
bean),它可能是这样的:
If you are using Spring Boot (which supports Filter
beans), it could be something like:
@Configuration
public class RestConfiguration {
@Bean
public FilterRegistrationBean corsFilter() {
UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
CorsConfiguration config = new CorsConfiguration().applyPermitDefaultValues();
source.registerCorsConfiguration("/**", config);
FilterRegistrationBean bean = new FilterRegistrationBean(new CorsFilter(source));
bean.setOrder(0);
return bean;
}
}
这篇关于Spring Data Rest 和 Cors的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!