### 测试后端API连接

#### 1. 测试基本连接
GET http://localhost:8080/api/auth/test-login

#### 2. 测试登录端点
POST http://localhost:8080/api/auth/test-login
Content-Type: application/json

{}

#### 3. 检查路由
GET http://localhost:8080

#### 4. 测试CORS
OPTIONS http://localhost:8080/api/auth/test-login