ServletUriComponentsBuilder遇到Nginx反向代理时，无法识别HTTPS前言ServletUriComponentsBuilder遇到Nginx反向代理时，无法识别HTTPS的原因解决办法参考

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前言

spring mvc 5.2.9.RELEASE
springboot 2.3.4.RELEASE

ServletUriComponentsBuilder遇到Nginx反向代理时，无法识别HTTPS的原因

spring 5.0.X ServletUriComponentsBuilder 会读取 X-Forwarded-Prefix 头，但spring 5.1.X 就不再处理。
其在官方注释如下：

/**
 * UriComponentsBuilder with additional static factory methods to create links
 * based on the current HttpServletRequest.
 *
 * <p><strong>Note:</strong> As of 5.1, methods in this class do not extract
 * {@code "Forwarded"} and {@code "X-Forwarded-*"} headers that specify the
 * client-originated address. Please, use
 * {@link org.springframework.web.filter.ForwardedHeaderFilter
 * ForwardedHeaderFilter}, or similar from the underlying server, to extract
 * and use such headers, or to discard them.
 *
 * @author Rossen Stoyanchev
 * @since 3.1
 */
public class ServletUriComponentsBuilder extends UriComponentsBuilder {

解决办法

springboot中添加ForwardedHeaderFilter

@Configuration
public class ConfigForwardedHeaderFilter {
	@Bean
	public Filter forwardedHeaderFilter() {
		return new ForwardedHeaderFilter();
	}
}

nginx中添加 X-Forwarded-*

	location ^~ /front{
		proxy_pass http://127.0.0.1:8014;
		# $server_port端口，让request.getServerPort()能够获取正确的端口
		proxy_set_header   Host    $host:$server_port;
		proxy_set_header   Remote_Addr    $remote_addr;
		proxy_set_header   X-Real-IP    $remote_addr;
		proxy_set_header   X-Forwarded-For    $proxy_add_x_forwarded_for;
		# https请求转成http请求时，weblogic设置
		proxy_set_header WL-Proxy-SSL true; 
		# https请求转成http请求时，tomcat设置
		proxy_set_header X-Forwarded-Proto $scheme;
		# index页面设置
		index index;
	}

X-Forwarded-For ： HTTP 请求端真实 IP
X-Forwarded-Host ：用户在浏览器中看到的Host。域名或者ip。
X-Forwarded-Port ：用户在浏览器中看到的Port。80和443为默认端口，浏览器不显示这两个端口。
X-Forwarded-Proto ：用户在浏览器中看到的协议。Http或Https
X-Forwarded-Prefix ：当nginx转发请求后，省略的url部分。比如将prefix/a/b/c, 转发到 /a/b/c，prefix 就是 X-Forwarded-Prefix。