sometimes unexpected defaults. It is therefore recommended to add a SameSite

attribute with an appropriate value of either "Strict", "Lax", or "None".

       由于 Java Servlet 3.x/4.0 规范不支持 SameSite cookie 属性，所以要解决此类问题没有一个统一的方式。 如何解决此问题呢? 大家在网上找到的解决方案有三类：

1.  Nginx或APACHE SERVER这些代理服务器上设置:

    以nginx为例：proxy_cookie_path / "/; httponly; secure; SameSite=Lax";

2.  在添加完cookie时，加下如下代码：

 Cookie cookie = new Cookie("test_001", UriUtils.encode("123457890", "UTF-8"));cookie.setPath("/");cookie.setMaxAge(-1);cookie.setHttpOnly(true);
Collection<String> headers = response.getHeaders(HttpHeaders.SET_COOKIE);boolean firstHeader = true;for (String header : headers) { // there can be multiple Set-Cookie attributesif (firstHeader) {response.setHeader(HttpHeaders.SET_COOKIE, String.format("%s; SameSite=%s", header, this.cookieSameSite));firstHeader = false;continue;}response.addHeader(HttpHeaders.SET_COOKIE, String.format("%s; SameSite=%s", header, this.cookieSameSite));}

3. 对于springboot2.6及以上版本，设置：server.session.cookie.same-site=LAX

但对于springboot2.6以下版本来说，利用spring security本身的机制解决此问题没有统一的方式。考虑到spring在写http header时利用了org.springframework.security.web.header.HeaderWriter，所以可以通过自定义一个SameSiteCookieHeaderWriter来实现。具体实现如下：

  a) 实现一个自定义HeaderWriter: SameSiteCookieHeaderWriter

    

import java.util.Collection;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.springframework.http.HttpHeaders;
import org.springframework.security.web.header.HeaderWriter;/*** 安全问题: Cookie without SameSite attribute* */
public class SameSiteCookieHeaderWriter implements HeaderWriter {private String cookieSameSite;public SameSiteCookieHeaderWriter(String cookieSameSite) {this.cookieSameSite = cookieSameSite;if (this.cookieSameSite.equalsIgnoreCase("NONE") || this.cookieSameSite.equalsIgnoreCase("LAX")|| this.cookieSameSite.equalsIgnoreCase("STRICT")) {this.cookieSameSite = "LAX";} else {this.cookieSameSite = this.cookieSameSite.toUpperCase();}}/*  *(non-Javadoc)  * @see org.springframework.security.web.header.HeaderWriter#writeHeaders(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)  */@Overridepublic void writeHeaders(HttpServletRequest request, HttpServletResponse response) {Collection<String> headers = response.getHeaders(HttpHeaders.SET_COOKIE);boolean firstHeader = true;for (String header : headers) { // there can be multiple Set-Cookie attributesif (firstHeader) {response.setHeader(HttpHeaders.SET_COOKIE, String.format("%s; SameSite=%s", header, this.cookieSameSite));firstHeader = false;continue;}response.addHeader(HttpHeaders.SET_COOKIE, String.format("%s; SameSite=%s", header, this.cookieSameSite));}}}

b) 在WebSecurityConfigurerAdapter的configure(HttpSecurity http) 中加上此SameSiteHeaderWriter

public class WebSecurityConfig extends WebSecurityConfigurerAdapter {@Overrideprotected void configure(HttpSecurity http) throws Exception {http. //cors().and(). //csrf().disable().//sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);// 设置 X-Frame-Options// disable 是没有 X-Frame-Options// 没有 disable 就是 DENY// sameOrigin 就是 SAMEORIGINhttp.headers().frameOptions().sameOrigin(); // disable submit dc99635// http.headers().frameOptions().disable(); // 按配置来http.headers().xssProtection().xssProtectionEnabled(true).block(true);http.headers().addHeaderWriter(new SameSiteCookieHeaderWriter("LAX"));}}

这种方法相对来说比较优雅，其原理是利用springsecurity的HeaderWriter机制将原来的Set-Cookie重写了。