增加 spring websocket 用例

spring/spring-websocket/src/main/java/com/heibaiying/controller/LoginController.java

@@ -0,0 +1,23 @@
+package com.heibaiying.controller;
+
+import com.heibaiying.constant.Constant;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import javax.servlet.http.HttpSession;
+
+/**
+ * @author : 罗祥
+ * @description : 简单登录
+ * @date :create in 2018/12/27
+ */
+@Controller
+public class LoginController {
+
+    @PostMapping("login")
+    public String login(String username, HttpSession session){
+        session.setAttribute(Constant.USER_NAME,username);
+        return "chat";
+    }
+}