Springboot が WebMvcConfig を構成することで Cors の非独自アクセスのクロスドメインの問題を処理する方法

public interface WebMvcConfigurer { default void configurePathMatch(PathMatchConfigurer configurer) { } default void configureContentNegotiation(ContentNegotiationConfigurer configurer) { } default void configureAsyncSupport(AsyncSupportConfigurer configurer) { } default void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) { } default void addFormatters(FormatterRegistry registry) { } default void addInterceptors(InterceptorRegistry registry) { } default void addResourceHandlers(ResourceHandlerRegistry registry) { } default void addCorsMappings(CorsRegistry registry) { } default void addViewControllers(ViewControllerRegistry registry) { } default void configureViewResolvers(ViewResolverRegistry registry) { } default void addArgumentResolvers(List resolvers) { } default void addReturnValueHandlers(List handlers) { } default void configureMessageConverters(List> converters) { } default void extendMessageConverters(List> converters) { } default void configureHandlerExceptionResolvers(List resolvers) { } default void extendHandlerExceptionResolvers(List resolvers) { } @Nullable default Validator getValidator() { return null; } @Nullable default MessageCodesResolver getMessageCodesResolver() { return null; } }

public class CorsRegistry { private final List registrations = new ArrayList(); public CorsRegistry() { } public CorsRegistration addMapping(String pathPattern) { CorsRegistration registration = new CorsRegistration(pathPattern); this.registrations.add(registration); return registration; } protected Map getCorsConfigurations() { Map configs = CollectionUtils.newLinkedHashMap(this.registrations.size()); Iterator var2 = this.registrations.iterator(); while(var2.hasNext()) { CorsRegistration registration = (CorsRegistration)var2.next(); configs.put(registration.getPathPattern(), registration.getCorsConfiguration()); } return configs; } }

public class CorsRegistration { private final String pathPattern; private CorsConfiguration config; public CorsRegistration(String pathPattern) { this.pathPattern = pathPattern; this.config = (new CorsConfiguration()).applyPermitDefaultValues(); } public CorsRegistration allowedOrigins(String... origins) { this.config.setAllowedOrigins(Arrays.asList(origins)); return this; } public CorsRegistration allowedOriginPatterns(String... patterns) { this.config.setAllowedOriginPatterns(Arrays.asList(patterns)); return this; } public CorsRegistration allowedMethods(String... methods) { this.config.setAllowedMethods(Arrays.asList(methods)); return this; } public CorsRegistration allowedHeaders(String... headers) { this.config.setAllowedHeaders(Arrays.asList(headers)); return this; } public CorsRegistration exposedHeaders(String... headers) { this.config.setExposedHeaders(Arrays.asList(headers)); return this; } public CorsRegistration allowCredentials(boolean allowCredentials) { this.config.setAllowCredentials(allowCredentials); return this; } public CorsRegistration maxAge(long maxAge) { this.config.setMaxAge(maxAge); return this; } public CorsRegistration combine(CorsConfiguration other) { this.config = this.config.combine(other); return this; } protected String getPathPattern() { return this.pathPattern; } protected CorsConfiguration getCorsConfiguration() { return this.config; } }

/** * 配置前端跨域访问请求 */ @Configuration public class WbMvcConfig implements WebMvcConfigurer { @Override public void addCorsMappings(CorsRegistry registry) { registry.addMapping("/**") .allowedHeaders("Content-Type","X-Request-With","Access-Control-Request-Method","Access-Control-Request-Headers","token") .allowedMethods("*") .allowedOriginPatterns("*") /*注意当这个配置为真是我们不能将允许源设置为*而是将源路径设置为*即可*/ .allowCredentials(true); } @Bean public FormContentFilter httpPutFormContentFilter(){ return new FormContentFilter(); } }

@RestController public class testController { @Autowired private ProductServiceImpl productService; @GetMapping("/all") @ResponseBody public List all() { Page page = productService.page(1L); List productList = new LinkedList<>(); productList.add(page.getRecords().iterator().next()); return productList; } }