update

src/main/java/com/yutou/tools/utils/Tools.java

@@ -0,0 +1,15 @@
+package com.yutou.tools.utils;
+
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+
+public class Tools {
+    public static Cookie getCookie(HttpServletRequest request,String key){
+        for (Cookie cookie : request.getCookies()) {
+            if(cookie.getName().equals(key)){
+                return cookie;
+            }
+        }
+        return null;
+    }
+}

src/main/java/com/yutou/tools/web/userController.java

@@ -0,0 +1,23 @@
+package com.yutou.tools.web;
+
+import com.alibaba.fastjson.JSONObject;
+import com.yutou.tools.utils.Tools;
+import org.springframework.stereotype.Controller;
+
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+
+@Controller
+public class userController {
+
+    public String getLoginState(HttpServletRequest request){
+        JSONObject json=new JSONObject();
+        Cookie cookie= Tools.getCookie(request,"user");
+        if(cookie==null){
+            json.put("code",-1);
+            json.put("msg","未登录");
+            return json.toJSONString();
+        }
+        return "";
+    }
+}