nginx内部访问特性如何实现静态资源授权访问

response.setHeader("X-Accel-Redirect", "/A.html");

server {
    listen      8001;
    server_name 192.168.0.218;
    
        。。。
    
    location /projects/dzzhyj/ {
        alias /home/gzdd_html/gzdd/projects/dzzhyj/;#物理路径

        location ~* \.html$ {#只设置*.html为内部访问
            internal;
        }
    }      
}

<template>
  <div class="-map-container">
<!--    <iframe src="/projects/dzzhyj/index.html" ></iframe> -->
    <iframe src="/api/dzzhyj/redirect/dzzhyj" ></iframe>
  </div>
</template>

@Controller
@RequestMapping("redirect")
public class RedirectController {
    @GetMapping("/dzzhyj")
    public void handleDzzhyj(HttpServletRequest request, HttpServletResponse response) throws Exception {
            response.setHeader("X-Accel-Redirect", "/projects/dzzhyj/index.html");
    }
}

@Controller
@RequestMapping("redirect")
public class RedirectController {
    @GetMapping("/dzzhyj")
    public void handleDzzhyj(HttpServletRequest request, HttpServletResponse response) throws Exception {
        String xForwardedForHeader = request.getHeader("X-Real-IP");
        if (xForwardedForHeader != null && !xForwardedForHeader.isEmpty()) {
            // 请求经过了 Nginx
            response.setHeader("X-Accel-Redirect", "/projects/dzzhyj/index.html");
        } else {
            // 请求未经过 Nginx
            String[] hosts = request.getHeader("X-Forwarded-Host").split(",");
            String url = String.format("http://%s/projects/dzzhyj/index.html",hosts[0]);
            response.sendRedirect(url);
        }
    }
}