Golang：gin 的参数绑定问题

Question

gin ShouldBind 绑定基于结构体的问题

          // case one:
          type Request struct {
              UID  string `form:"uid" binding:"required"`
              User string `form:"user" binding:"required"`
          }
      
          //case two:
           type Request struct {
              UID  string `form:"uid" binding:"required,uid"`
              User string `form:"user" binding:"required,user"`
          }

          if err := c.ShouldBind(&params); err != nil {
              c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
              return
        }

binding针对参数请求的格式json等，都尝试过，针对于case one，没有出现问题， case two 会panic，不清楚具体情况

        {
            "uid" : "1",
            "user" : "admin"
        }

如果针对于case two能正确的绑定参数

Answer 1

绑定json用c.BindJson就可以了