GIN框架中的自定义验证

我有一份和歌朗一起写的申请书 gin framework . 我想编写一个中间件来定制所有错误消息,特别是在 BindJSON .

这是中间件:

func Errors() gin.HandlerFunc {
    return func(c *gin.Context) {
        c.Next()
        // Only run if there are some errors to handle
        if len(c.Errors) > 0 {
            for _, e := range c.Errors {
                // Find out what type of error it is
                switch e.Type {
                case gin.ErrorTypePublic:
                    // Only output public errors if nothing has been written yet
                    if !c.Writer.Written() {
                        c.JSON(c.Writer.Status(), gin.H{"Error": e.Error()})
                    }
                case gin.ErrorTypeBind:
                    errs := e.Err.(validator.ValidationErrors)
                    list := make(map[int]string)

                    fmt.Println(errs)
                    for field, err := range errs {
                        list[field] = validationErrorToText(err)
                    }
                    // Make sure we maintain the preset response status
                    status := http.StatusBadRequest
                    if c.Writer.Status() != http.StatusOK {
                        status = c.Writer.Status()
                    }
                    c.JSON(status, gin.H{"Errors": list})

                default:
                    c.JSON(http.StatusBadRequest, gin.H{"Errors": c.Errors.JSON()})
                }

            }
            // If there was no public or bind error, display default 500 message
            if !c.Writer.Written() {
                c.JSON(http.StatusInternalServerError, gin.H{"Error": errorInternalError.Error()})
            }
        }
    }
}

功能非常简单,它可以 gin 错误并根据错误类型执行某些操作!问题在于 gin.ErrorTypeBind 当我尝试将错误映射到验证错误时: e.Err.(validator.ValidationErrors) . 我有这个错误

interface conversion: error is validator.ValidationErrors, not validator.ValidationErrors (types from different packages)

以下是导入包的列表:

import (
    "errors"
    "fmt"
    "net/http"

    "github.com/gin-gonic/gin"
    "gopkg.in/go-playground/validator.v9"
)