本文主要介绍了SpringBoot实现多个子域共享cookie的示例，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧
项目信息
使用SpringBoot web框架，版本号 2.7.10
org.springframework.boot spring-boot-starter-web
cookie 共享
需求
现在有两个域名 dev.scd.com.cn，test.scd.com.cn 的服务，登录验证之后，服务器写入 cookie 到响应头，用户只需要登录一次，访问任意一个域都携带cookie 信息
如何实现
后端服务写入cookie 指定domain为二级域名 .scd.com.cn
cookie基础知识
环境配置
配置域
本地模拟多个域的环境，需要在host 上配置域名，增加如下配置
127.0.0.1 dev.scd.com.cn 127.0.0.1 test.scd.com.cn
SpringBoot 配置 https 访问
application.properties 文件增加如下配置
# https server.ssl.key-store=F:/keytool/https.p12 server.ssl.key-alias=tomcathttps server.ssl.key-store-password=shootercheng
执行jdk 自带的命令行工具 keytool 生成证书
keytool -genkey -alias tomcathttps -keyalg RSA -keysize 4096 -keystore https.p12 -validity 365
参考地址
后端代码
在 httpResponse 响应中增加 cookie
package com.scd.cookie.controller; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.http.HttpHeaders; import org.springframework.http.ResponseCookie; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.time.Duration; /** * @author James * @date 2023/4/8 */ @RestController @RequestMapping(value = "/cookie") public class CookieController { private static final Logger LOGGER = LoggerFactory.getLogger(CookieController.class); private static final String COOKIE_DOMAIN = ".scd.com.cn"; private static final int COOKIE_MAX_AGE_DAY = 7; private static final String COOKIE_KEY = "test_key"; @GetMapping("/set") public String cookieSet(HttpServletResponse response) { Cookie cookie = new Cookie(COOKIE_KEY, "scd"); cookie.setDomain(COOKIE_DOMAIN); cookie.setHttpOnly(true); cookie.setPath("/"); cookie.setSecure(true); cookie.setMaxAge((int) Duration.ofDays(COOKIE_MAX_AGE_DAY).getSeconds()); response.addCookie(cookie); return "OK"; } @GetMapping("/get") public String cookieGet(HttpServletRequest request) { Cookie[] cookies = request.getCookies(); for (Cookie cookie : cookies) { if (COOKIE_KEY.equals(cookie.getName())) { LOGGER.info("cookie name {} value {}", COOKIE_KEY, cookie.getValue()); } return cookie.getValue(); } return "OK"; } } 启动服务，访问 https://dev.scd.com.cn:8080/cookie/set
后端服务报错信息如下 An invalid domain [.scd.com.cn] was specified for this cookie
java.lang.IllegalArgumentException: An invalid domain [.scd.com.cn] was specified for this cookie at org.apache.tomcat.util.http.Rfc6265CookieProcessor.validateDomain(Rfc6265CookieProcessor.java:218) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.tomcat.util.http.Rfc6265CookieProcessor.generateHeader(Rfc6265CookieProcessor.java:153) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.connector.Response.generateCookieString(Response.java:970) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.connector.Response.addCookie(Response.java:923) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.connector.ResponseFacade.addCookie(ResponseFacade.java:314) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at javax.servlet.http.HttpServletResponseWrapper.addCookie(HttpServletResponseWrapper.java:57) ~[tomcat-embed-core-9.0.73.jar:4.0.FR] at com.scd.cookie.controller.CookieController.cookieSet(CookieController.java:39) ~[classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_77] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_77] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_77] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_77] at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-5.3.26.jar:5.3.26] at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150) ~[spring-web-5.3.26.jar:5.3.26] at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) ~[spring-webmvc-5.3.26.jar:5.3.26] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.26.jar:5.3.26] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.26.jar:5.3.26] at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.26.jar:5.3.26] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1072) ~[spring-webmvc-5.3.26.jar:5.3.26] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:965) ~[spring-webmvc-5.3.26.jar:5.3.26] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.26.jar:5.3.26] at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.26.jar:5.3.26] at javax.servlet.http.HttpServlet.service(HttpServlet.java:502) ~[tomcat-embed-core-9.0.73.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.26.jar:5.3.26] at javax.servlet.http.HttpServlet.service(HttpServlet.java:596) ~[tomcat-embed-core-9.0.73.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:209) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.73.jar:9.0.73] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.26.jar:5.3.26] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.26.jar:5.3.26] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.26.jar:5.3.26] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.26.jar:5.3.26] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal(SessionRepositoryFilter.java:142) ~[spring-session-core-2.7.1.jar:2.7.1] at org.springframework.session.web.http.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:82) ~[spring-session-core-2.7.1.jar:2.7.1] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.26.jar:5.3.26] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.26.jar:5.3.26] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) ~[tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:389) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) [tomcat-embed-core-9.0.73.jar:9.0.73] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.73.jar:9.0.73]
根据堆栈信息，发现报错的方法在校验域名时候产生的org.apache.tomcat.util.http.Rfc6265CookieProcessor#generateHeader(javax.servlet.http.Cookie, javax.servlet.http.HttpServletRequest)org.apache.tomcat.util.http.Rfc6265CookieProcessor#validateDomain
private void validateDomain(String domain) { int i = 0; int prev = true; int cur = -1; for(char[] chars = domain.toCharArray(); i 如何绕过校验了，跟踪代码发现最终添加 cookie 的代码方法为
org.apache.catalina.connector.Response#addCookie
org.apache.catalina.connector.Response#addHeader(java.lang.String, java.lang.String, java.nio.charset.Charset)
最终是转换为字符串设置到 “Set-Cookie” 字符串的，可以使用如下方法直接设置
ResponseCookie cookie = ResponseCookie.from(COOKIE_KEY, "scd") .httpOnly(true) .secure(true) .domain(COOKIE_DOMAIN) .path("/") .sameSite("Lax") .maxAge(Duration.ofDays(COOKIE_MAX_AGE_DAY)) .build(); response.addHeader(HttpHeaders.SET_COOKIE, cookie.toString()); 这样就绕过校验了。调整之后的代码如下：
package com.scd.cookie.controller; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.http.HttpHeaders; import org.springframework.http.ResponseCookie; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.time.Duration; /** * @author James * @date 2023/4/8 */ @RestController @RequestMapping(value = "/cookie") public class CookieController { private static final Logger LOGGER = LoggerFactory.getLogger(CookieController.class); private static final String COOKIE_DOMAIN = ".scd.com.cn"; private static final int COOKIE_MAX_AGE_DAY = 7; private static final String COOKIE_KEY = "test_key"; @GetMapping("/set") public String cookieSet(HttpServletResponse response) { // Cookie cookie = new Cookie(COOKIE_KEY, "scd"); // cookie.setDomain(COOKIE_DOMAIN); // cookie.setHttpOnly(true); // cookie.setPath("/"); // cookie.setSecure(true); // cookie.setMaxAge((int) Duration.ofDays(COOKIE_MAX_AGE_DAY).getSeconds()); // response.addCookie(cookie); ResponseCookie cookie = ResponseCookie.from(COOKIE_KEY, "scd") .httpOnly(true) .secure(true) .domain(COOKIE_DOMAIN) .path("/") .sameSite("Lax") .maxAge(Duration.ofDays(COOKIE_MAX_AGE_DAY)) .build(); response.addHeader(HttpHeaders.SET_COOKIE, cookie.toString()); return "OK"; } @GetMapping("/get") public String cookieGet(HttpServletRequest request) { Cookie[] cookies = request.getCookies(); for (Cookie cookie : cookies) { if (COOKIE_KEY.equals(cookie.getName())) { LOGGER.info("cookie name {} value {}", COOKIE_KEY, cookie.getValue()); } return cookie.getValue(); } return "OK"; } } 验证
重启服务，之后访问 https://dev.scd.com.cn:8080/cookie/set，发现响应头设置cookie 成功
再次请求这个地址，请求头也携带了 cookie
访问 https://test.scd.com.cn:8080/cookie/set, 请求头也会携带cookie
验证后端解析 cookie 使用无痕模式，先访问 https://dev.scd.com.cn:8080/cookie/set再访问地址 https://test.scd.com.cn:8080/cookie/get
可以看到 cookie 在多个子域的请求都可以携带
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