Spring Cross Origin

Spring filter cross-origin

Filter

• Use Servler Filter
• Register Filter

   public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) 
    throws IOException,ServletException {
        HttpServletResponse response = (HttpServletResponse) res;
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", 
                           "X-Requested-With, Content-Type, 
                           Authorization, Origin, Accept, Access-Control-Request-Method, 
                           Access-Control-Request-Headers");
        chain.doFilter(req, res);
    }

Annotation

• @CrossOrigin
• Support Param: origins, maxAge
• Use on Method/Controller
• Method need specify RequestMethod(GET,POST)
• Spring 4.2+

WebMvcConfigurer

• Add Globe Configurer, more Spring Style

@Override
public void addCorsMappings(CorsRegistry registry) {
    registry.addMapping("/api/**")
        .allowedOrigins("http://domain.com")
        .allowedMethods("PUT", "DELETE")
            .allowedHeaders("header1", "header2", "header3")
        .exposedHeaders("header1", "header2")
        .allowCredentials(false).maxAge(3600);
}

Old XML Way

• <mvc:cors>

Note

• Spring Security need enable CORS and use Spring Config
• Be Careful with Origin,Method,Header

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