如何在后端解决跨域问题（java）

Access to XMLHttpRequest at 'http://192.168.0.173:8080/findAll' from origin 'http://localhost:8080' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

我的端口是http://192.168.0.173:8080/findAll

跨域访问，使用远程调用RestTemplate

        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "DELETE, POST, GET, PUT, OPTIONS");
        response.setHeader("Access-Control-Allow-Headers", "Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With");
        
        if("OPTIONS".equalsIgnoreCase(request.getMethod())) {
            response.setStatus(200);
        }