springboot 如何解决cross跨域请求的问题

目录

• springboot 解决cross跨域请求
  • 1.使用ajax发送跨域请求接口时
  • 2.在被跨域请求的一方配置
  • 3.再次测试
  • 4.对于只有个别需要开放跨域请求的接口可以这样玩
  • 5.其它解决跨域请求的常用方法
• Spring解决cross domain
  • Spring4：
  • Spring3旧版本：

 @Bean
    public CorsFilter corsFilter() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("http://localhost:8081"); // 允许的域名白名单，可以*
        corsConfiguration.addAllowedHeader("*"); // 允许任何头
        corsConfiguration.addAllowedMethod(HttpMethod.POST); // 允许哪些类型请求，可以*
        corsConfiguration.addExposedHeader("my-header");//自定义请求头
        corsConfiguration.setAllowCredentials(true);//是否允许携带cookie
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/sys/generator/list", corsConfiguration); // 哪些path的接口可以被跨域请求
        source.registerCorsConfiguration("/sys/generator/code", corsConfiguration);
        return new CorsFilter(source);
    }

public class CorsConfigurerAdapter extends WebMvcConfigurerAdapter{ @Override public void addCorsMappings(CorsRegistry registry) { registry.addMapping("/api/*").allowedOrigins("*"); } } 

<bean class="com.tmall.wireless.angel.web.config.CorsConfigurerAdapter"></bean>

@Override
public final HandlerExecutionChain getHandler(HttpServletRequest request) throws Exception {
 Object handler = getHandlerInternal(request);
 if (handler == null) { handler = getDefaultHandler(); } if (handler == null) { return null; } // Bean name or resolved handler? if (handler instanceof String) { String handlerName = (String) handler; handler = getApplicationContext().getBean(handlerName); } HandlerExecutionChain executionChain = getHandlerExecutionChain(handler, request); if (CorsUtils.isCorsRequest(request)) { CorsConfiguration globalConfig = this.corsConfigSource.getCorsConfiguration(request); CorsConfiguration handlerConfig = getCorsConfiguration(handler, request); CorsConfiguration config = (globalConfig != null ? globalConfig.combine(handlerConfig) : handlerConfig); executionChain = getCorsHandlerExecutionChain(request, executionChain, config); } return executionChain; } 

public static boolean isCorsRequest(HttpServletRequest request) { return (request.getHeader(HttpHeaders.ORIGIN) != null); } 

@Override
public void handleRequest(HttpServletRequest request, HttpServletResponse response) throws IOException { corsProcessor.processRequest(this.config, request, response); } 

@Override
public boolean processRequest(CorsConfiguration config, HttpServletRequest request, HttpServletResponse response)
  throws IOException {
 if (!CorsUtils.isCorsRequest(request)) {
  return true; } ServletServerHttpResponse serverResponse = new ServletServerHttpResponse(response); ServletServerHttpRequest serverRequest = new ServletServerHttpRequest(request); if (WebUtils.isSameOrigin(serverRequest)) { logger.debug("Skip CORS processing, request is a same-origin one"); return true; } if (responseHasCors(serverResponse)) { logger.debug("Skip CORS processing, response already contains "Access-Control-Allow-Origin" header"); return true; } boolean preFlightRequest = CorsUtils.isPreFlightRequest(request); if (config == null) { if (preFlightRequest) { rejectRequest(serverResponse); return false; } else { return true; } } return handleInternal(serverRequest, serverResponse, config, preFlightRequest); } 

response.setHeader("Access-Control-Allow-Origin", "*"); 

response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");

Object {userId: 123, userName: “adminUpdate-wangdachui”}