refactor: adjust project structure

util/ginRes.go

@@ -0,0 +1,20 @@
+package util
+
+import "github.com/gin-gonic/gin"
+
+func ReturnJson(c *gin.Context, httpCode int, code int, msg string, data interface{}) {
+	c.JSON(httpCode, gin.H{
+		"code": code,
+		"msg":  msg,
+		"data": data,
+	})
+}
+
+func ReturnInvalid(c *gin.Context) {
+	response := gin.H{
+		"code": 4,
+		"msg":  "无效请求参数",
+		"data": nil,
+	}
+	c.JSON(200, response)
+}