Angular2/Spring Boot 允许 PUT 上的跨域

Posted

技术标签:

【中文标题】Angular2/Spring Boot 允许 PUT 上的跨域【英文标题】:Angular2/Spring Boot Allow Cross Origin on PUT 【发布时间】:2018-03-29 01:49:10 【问题描述】:

我的 Web 应用程序有一个小问题:连接到 Spring Boot API 的 angular2 应用程序。

我无法从 angular2 应用程序访问我的请求。我收到此错误:

Failed to load http://localhost:8080/deliveryMan/: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:4200' is therefore not allowed access.

Java 代码:

@RestController
@RequestMapping(value = "/deliveryMan")
@CrossOrigin
public class DeliveryManController 

    @Autowired
    DeliveryManService deliveryManService;

    @RequestMapping(value = "/getAllDeliveryMan", method = RequestMethod.GET)
    public Iterable<DeliveryMan> getAllDeliveryMan()
        return deliveryManService.findAll();
    

    @RequestMapping(method = RequestMethod.PUT, consumes = "application/json")
    public DeliveryMan addDeliveryMan(@RequestBody DeliveryMan deliveryMan) throws InvalidObjectException 
        deliveryManService.save(deliveryMan);
        return deliveryMan;
    

@SpringBootApplication
@EnableAutoConfiguration
@ComponentScan
public class MyApp

    public static void main(String[] args) 
        SpringApplication.run(MyApp.class, args);
    

angular2 代码:

private apiUrl = 'http://localhost:8080/deliveryMan/';

getAll(): Promise<DeliveryMan[]> 
  const url = this.apiUrl + 'getAllDeliveryMan';
  return this.http.get(url)
    .toPromise()
    .then(response => response.json().data as DeliveryMan[])
    .catch(this.handleError);


saveDeliveryMan(deliveryMan: DeliveryMan): Promise<DeliveryMan> 
  const url = this.apiUrl;
  return this.http.put(url, JSON.stringify(deliveryMan), this.headers)
    .toPromise()
    .then(() => deliveryMan)
    .catch(this.handleError);

为了解决这个问题,我在我的控制器类中添加了@CrossOrigin。 它解决了 getAll 方法的问题,但不能解决附加方法的问题。

如何解决它,以便我可以使用 PUT 方法而不会出现此错误?

【问题讨论】:

【参考方案1】:

在您的项目中创建CORSFilter.java 文件。

@Component
@Order(Ordered.HIGHEST_PRECEDENCE)
public class CORSFilter implements Filter 

    /**
     * CORS filter for http-request and response
     */
    public CORSFilter() 
    

    /**
     * Do Filter on every http-request.
     */
    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException 
        HttpServletResponse response = (HttpServletResponse) res;
        HttpServletRequest request = (HttpServletRequest) req;
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "POST, PUT, GET, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", "access_token, authorization, content-type");

        if ("OPTIONS".equalsIgnoreCase(request.getMethod())) 
            response.setStatus(HttpServletResponse.SC_OK);
         else 
            chain.doFilter(req, res);
        
    

    /**
     * Destroy method
     */
    @Override
    public void destroy() 
    

    /**
     * Initialize CORS filter 
     */
    @Override
    public void init(FilterConfig arg0) throws ServletException 
    

你可以参考这个帖子Angular 2 Spring Boot Login CORS Problems

【讨论】:

【参考方案2】:

您可以只使用:(它应该适用于所有 CRUD 操作)

@CrossOrigin(origins = "*")

【讨论】:

它不会改变任何东西......文档说:“默认情况下,所有来源和 GET、HEAD 和 POST 方法都是允许的”。即使使用 (origins = "*") 它也不适用于我的 PUT 方法。【参考方案3】:

@CrossOrigin(origins = "http://localhost:4200") 注释添加到您的控制器中,例如:

@CrossOrigin(origins = "http://localhost:4200")
@RequestMapping(method = RequestMethod.PUT, consumes = "application/json")
    public DeliveryMan addDeliveryMan(@RequestBody DeliveryMan deliveryMan) throws InvalidObjectException 
        deliveryManService.save(deliveryMan);
        return deliveryMan;
    

【讨论】:

正如我对@Amit 所说:它不会改变任何东西......文档说:“默认情况下,所有来源和 GET、HEAD 和 POST 方法都是允许的”。即使使用 (origins = "localhost:4200") 它也不适用于我的 PUT 方法。

以上是关于Angular2/Spring Boot 允许 PUT 上的跨域的主要内容,如果未能解决你的问题,请参考以下文章

Angular2 Spring Boot JWT 缺少响应标头

angular2 spring boot 跨域 cors

Angular2+Spring Boot:无法解决上下文路径问题 |前端没有数据

Mac 安装Spring Boot CLI

spring boot跨域设置

Spring Boot - 不允许使用 POST 方法