ADD file via upload

blogserver/src/main/java/org/sang/controller/LoginRegController.java

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+package org.sang.controller;
+
+import org.sang.bean.RespBean;
+import org.sang.bean.User;
+import org.sang.service.UserService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+
+@RestController
+public class LoginRegController {
+
+    @Autowired
+    UserService userService;
+
+    @RequestMapping("/login_error")
+    public RespBean loginError() {
+        return new RespBean("error", "登录失败!");
+    }
+
+    @RequestMapping("/login_success")
+    public RespBean loginSuccess() {
+        return new RespBean("success", "登录成功!");
+    }
+
+    /**
+     * 如果自动跳转到这个页面，说明用户未登录，返回相应的提示即可
+     * <p>
+     * 如果要支持表单登录，可以在这个方法中判断请求的类型，进而决定返回JSON还是HTML页面
+     *
+     * @return
+     */
+    @RequestMapping("/login_page")
+    public RespBean loginPage() {
+        return new RespBean("error", "尚未登录，请登录!");
+    }
+
+    @PostMapping("/reg")
+    public RespBean reg(User user) {
+        int result = userService.reg(user);
+        if (result == 0) {
+            //成功
+            return new RespBean("success", "注册成功!");
+        } else if (result == 1) {
+            return new RespBean("error", "用户名重复，注册失败!");
+        } else {
+            //失败
+            return new RespBean("error", "注册失败!");
+        }
+    }
+}