试过换域名什么的，本地测试可以正常获取，线上获取不到，本地一切正常
try {
if (cookieValue == null) {
cookieValue = "";
} else if (isEncode) {
cookieValue = URLEncoder.encode(cookieValue, "utf-8");
}
Cookie cookie = new Cookie(cookieName, cookieValue);
if (cookieMaxage > 0)
cookie.setMaxAge(cookieMaxage);
if (null != request) {// 设置域名的cookie
String domainName = getDomainName(request);
//logger.info("========== domainName: {} ==========", domainName);
if (!"localhost".equals(domainName)) {
cookie.setDomain(domainName);
//cookie.setDomain(".unionpay.com"); //测试此地址 写死
logger.info("========== domainName: {} ==========", domainName);
}
}
cookie.setPath("/");
response.addCookie(cookie);
} catch (Exception e) {
e.printStackTrace();
}
private static final String getDomainName(HttpServletRequest request) {
String domainName = null;
String serverName = request.getRequestURL().toString();
if (serverName == null || serverName.equals("")) {
domainName = "";
} else {
//serverName = serverName.toLowerCase();
serverName = serverName.toLowerCase(Locale.ENGLISH); //测试
serverName = serverName.substring(7);
final int end = serverName.indexOf("/");
serverName = serverName.substring(0, end);
if (serverName.indexOf(":") > 0) {
String[] ary = serverName.split("\\:");
serverName = ary[0];
}
final String[] domains = serverName.split("\\.");
int len = domains.length;
if (len > 3 && !isIp(serverName)) {
// www.xxx.com.cn
domainName = "." + domains[len - 3] + "." + domains[len - 2] + "." + domains[len - 1];
} else if (len <= 3 && len > 1) {
// xxx.com or xxx.cn
domainName = "." + domains[len - 2] + "." + domains[len - 1];
} else {
domainName = serverName;
}
}
return domainName;
}
```
```java
