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java - 带有 Spring Boot 2 的 CORS

问题描述

我正在尝试将我的 Angular 应用程序连接到我的新 Spring Boot 2 控制器。我开始一切，我得到：

Access to XMLHttpRequest at 'localhost:8093/restapi/setup' from origin 'http://localhost:4200' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https.

其次是：

ERROR HttpErrorResponse {headers: HttpHeaders, status: 0, statusText: "Unknown Error", url: "localhost:8093/restapi/setup", ok: false, …}

所以这是CORS，对吧？正如你所料，当我localhost:8093/restapi/setup从邮递员那里打来时，我得到了有效的回应。

所以我做了一些研究，特别是我发现：No 'Access-Control-Allow-Origin' header is present on the requested resource—when trying to get data from a REST API

我终于在这里找到了这篇文章：

https://chariotsolutions.com/blog/post/angular-2-spring-boot-jwt-cors_part1/

这导致我得到以下代码：

@Configuration
public class ManageConfiguration {
    private static final Logger         LOGGER = LogManager.getLogger(ManageConfiguration.class);

    @Bean
    public CorsFilter corsFilter() {
        LOGGER.debug("Configuring CORS");
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration config = new CorsConfiguration();
        config.setAllowCredentials(true);
        config.addAllowedOrigin("*");
        config.addAllowedHeader("*");
        config.addAllowedMethod("OPTIONS");
        config.addAllowedMethod("GET");
        config.addAllowedMethod("POST");
        config.addAllowedMethod("PUT");
        config.addAllowedMethod("DELETE");
        source.registerCorsConfiguration("/**", config);
        return new CorsFilter(source);
    }
}

所以我认为这很简单，现在再试一次，我得到：

Access to XMLHttpRequest at 'localhost:8093/restapi/setup' from origin 'http://localhost:4200' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https.

其次是：

ERROR HttpErrorResponse {headers: HttpHeaders, status: 0, statusText: "Unknown Error", url: "localhost:8093/restapi/setup", ok: false, …}

所以它似乎没有任何区别。

检查并在正确的端口上运行：

2019-02-27 14:23:21.261  INFO 9814 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8093 (http) with context path ''

确保它包括我的 CORS bean：

2019-02-27 14:23:19.608 DEBUG 9814 --- [           main] o.s.b.f.s.DefaultListableBeanFactory     : Creating shared instance of singleton bean 'corsFilter'
...
o.springframework.web.filter.CorsFilter  : Filter 'corsFilter' configured for use

Per如何使用 cURL 调试 CORS 请求？，我做了以下 curl 请求来查看我的飞行前的东西。

$ curl -H "Origin: http://example.com" --verbose http://localhost:8093/restapi/setup
*   Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 8093 (#0)
> GET /restapi/setup HTTP/1.1
> Host: localhost:8093
> User-Agent: curl/7.61.0
> Accept: */*
> Origin: http://example.com
> 
< HTTP/1.1 200 
< Vary: Origin
< Vary: Access-Control-Request-Method
< Vary: Access-Control-Request-Headers
< Access-Control-Allow-Origin: http://example.com
< Access-Control-Allow-Credentials: true
< X-Content-Type-Options: nosniff
< X-XSS-Protection: 1; mode=block
< Cache-Control: no-cache, no-store, max-age=0, must-revalidate
< Pragma: no-cache
< Expires: 0
< X-Frame-Options: DENY
< Content-Type: application/json;charset=UTF-8
< Transfer-Encoding: chunked
< Date: Wed, 27 Feb 2019 21:38:28 GMT
< 
* Connection #0 to host localhost left intact
{"issueType":["bug","epic","subTask","task","story"]}

一天来一直在为下一步要尝试什么而挠头，却什么也想不出来。建议？

标签： javaspringspring-bootcors

解决方案

我认为您http://在请求 URL 中发送没有协议前缀的 ajax 请求，请尝试http://localhost:8093/restapi/setup从 ajax 中点击。

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