java - 在spring mvc中按名称获取cookie值
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java - get cookie value by name in spring mvc
提问by hamed
I'm working on a java spring mvc application. I have set a cookie in one of my controller's methods in this way:
我正在开发一个 java spring mvc 应用程序。我以这种方式在我的控制器方法之一中设置了一个 cookie：
@RequestMapping(value = {"/news"}, method = RequestMethod.GET)
public ModelAndView news(Locale locale, Model model, HttpServletResponse response, HttpServletRequest request) throws Exception {
...
response.setHeader("Set-Cookie", "test=value; Path=/");
...
modelAndView.setViewName("path/to/my/view");
return modelAndView;
}
This is working fine and I can see a cookie with name testand value "value" in my browser console. Now I want to get the cookie value by name in other method. How can I get value of testcookie?
这工作正常，我可以test在浏览器控制台中看到名称和值为“value”的 cookie 。现在我想通过其他方法按名称获取 cookie 值。我怎样才能获得testcookie的价值？
回答by bekce
Spring MVC already gives you the HttpServletRequestobject, it has a getCookies()method that returns Cookie[]so you can iterate on that.
Spring MVC 已经为您提供了HttpServletRequest对象，它有一个getCookies()返回的方法，Cookie[]因此您可以对其进行迭代。
回答by meskobalazs
The simplest way is using it in a controller with the @CookieValueannotation:
最简单的方法是在带有@CookieValue注释的控制器中使用它：
@RequestMapping("/hello")
public String hello(@CookieValue("foo") String fooCookie) {
// ...
}
Otherwise, you can get it from the servlet request using Spring org.springframework.web.util.WebUtils
否则，您可以使用 Spring 从 servlet 请求中获取它 org.springframework.web.util.WebUtils
WebUtils.getCookie(HttpServletRequest request, String cookieName)
By the way, the code pasted into the question could be refined a bit. Instead of using #setHeader(), this is much more elegant:
顺便说一句，粘贴到问题中的代码可以稍微改进一下。而不是使用#setHeader()，这更优雅：
response.addCookie(new Cookie("test", "value"));
回答by Vishnu Katpure
Cookie doesnt have method to get by value try this
Cookie 没有按值获取的方法试试这个
Cookie cookie[]=request.getCookies();
Cookie cook;
String uname="",pass="";
if (cookie != null) {
for (int i = 0; i < cookie.length; i++) {
cook = cookie[i];
if(cook.getName().equalsIgnoreCase("loginPayrollUserName"))
uname=cook.getValue();
if(cook.getName().equalsIgnoreCase("loginPayrollPassword"))
pass=cook.getValue();
}
}
回答by ryanp
You can also use org.springframework.web.util.WebUtils.getCookie(HttpServletRequest, String).
您也可以使用org.springframework.web.util.WebUtils.getCookie(HttpServletRequest, String).
回答by Padi
private String extractCookie(HttpServletRequest req) {
for (Cookie c : req.getCookies()) {
if (c.getName().equals("myCookie"))
return c.getValue();
}
return null;
}
回答by ottercoder
private String getCookieValue(HttpServletRequest req, String cookieName) {
return Arrays.stream(req.getCookies())
.filter(c -> c.getName().equals(cookieName))
.findFirst()
.map(Cookie::getValue)
.orElse(null);
}
