Global CORS configuration

Global CORS configuration

As an alternative to fine-grained annotation-based configuration, you can also define some global CORS configuration as well. This is similar to using a Filter based solution, but can be declared within Spring MVC and combined with fine-grained @CrossOrigin configuration. By default all origins and GET, HEAD and POST methods are allowed.

src/main/java/hello/GreetingController.java

    @GetMapping("/greeting-javaconfig")
    public Greeting greetingWithJavaconfig(@RequestParam(required=false, defaultValue="World") String name) {
        System.out.println("==== in greeting ====");
        return new Greeting(counter.incrementAndGet(), String.format(template, name));
    }

src/main/java/hello/Application.java

    @Bean
    public WebMvcConfigurer corsConfigurer() {
        return new WebMvcConfigurerAdapter() {
            @Override
            public void addCorsMappings(CorsRegistry registry) {
                registry.addMapping("/greeting-javaconfig").allowedOrigins("http://localhost:9000");
            }
        };
    }

You can easily change any properties (like the allowedOrigins one in the example), as well as only apply this CORS configuration to a specific path pattern. Global and controller level CORS configurations can also be combined.