add: 登录

src/main/java/com/dota/nexus/controller/UserController.java

@@ -0,0 +1,28 @@
+package com.dota.nexus.controller;
+
+import com.dota.nexus.entity.LoginDTO;
+import com.dota.nexus.entity.R;
+import com.dota.nexus.service.UserService;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("user")
+public class UserController {
+    UserService userService;
+
+    public UserController(UserService userService) {
+        this.userService = userService;
+    }
+
+    @PostMapping("login")
+    public R login(LoginDTO loginDTO) throws Exception {
+        var res = userService.login(loginDTO.username(), loginDTO.password());
+        if (res==null) {
+            return R.error("用户不存在或者密码错误");
+        }
+
+        return R.ok(res);
+    }
+}