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  • java 服务端设置跨域

    java与前端对接,跨域问题

     
    // 最简单的处理方式
    response.setHeader("Access-Control-Allow-Origin","*");

    2.

    // 这个可以用过滤器统一处理
    if (request.getHeader("Access-Control-Request-Method") != null && "OPTIONS".equals(request.getMethod())) {
                // CORS "pre-flight" request
                response.addHeader("Access-Control-Allow-Origin", "*");
                response.addHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
                response.setHeader("Access-Control-Allow-Headers", "x-requested-with");
                response.addHeader("Access-Control-Max-Age", "1800");//30 min
            }

    3.使用拦截器统一做跨域处理

    @Component
    public class CORSInterceptor extends HandlerInterceptorAdapter {
        @Override
        public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
            //添加跨域CORS
            response.setHeader("Access-Control-Allow-Origin", "*");
            response.setHeader("Access-Control-Allow-Headers", "X-Requested-With,content-type,token");
            response.setHeader("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH");
            return true;
        }
    }

    4.最后启用拦截器就ok,以下展示在Spring-boot配置

    public class WebConfigTest extends WebMvcConfigurerAdapter {
        @Autowired
        private CORSInterceptor corsInterceptor;
    
        @Override
        public void addInterceptors(InterceptorRegistry registry) {
            registry.addInterceptor(corsInterceptor);
        }
    }
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  • 原文地址:https://www.cnblogs.com/dztHome/p/9430341.html
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