mirror of
https://gitee.com/johng/gf
synced 2026-07-04 04:52:48 +08:00
57 lines
2.0 KiB
Go
57 lines
2.0 KiB
Go
// Copyright 2017 gf Author(https://gitee.com/johng/gf). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://gitee.com/johng/gf.
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// 其他工具包
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package gutil
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import (
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"fmt"
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"reflect"
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"encoding/json"
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"gitee.com/johng/gf/g/util/gstr"
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"gitee.com/johng/gf/g/util/gconv"
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"bytes"
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)
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// 格式化打印变量(类似于PHP-vardump)
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func Dump(i interface{}) {
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buffer := &bytes.Buffer{}
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encoder := json.NewEncoder(buffer)
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encoder.SetEscapeHTML(false)
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encoder.SetIndent("", "\t")
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if err := encoder.Encode(i); err == nil {
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fmt.Println(buffer.String())
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} else {
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fmt.Errorf("%s\n", err.Error())
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}
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}
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// 将map键值对映射到对应的struct对象属性上，需要注意：
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// 1、第二个参数为struct对象指针；
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// 2、struct对象的公开属性才能被映射赋值；
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// 3、map中的键名可以为小写，映射转换时会自动将键名首字母转为大写做匹配映射，如果无法匹配则忽略；
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func MapToStruct(m map[string]interface{}, o interface{}) error {
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for k, v := range m {
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_MapToStructSetField(o, k, v)
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}
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return nil
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}
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func _MapToStructSetField(obj interface{}, name string, value interface{}) {
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structValue := reflect.ValueOf(obj).Elem()
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structFieldValue := structValue.FieldByName(gstr.UcFirst(name))
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// 键名与对象属性匹配检测
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if !structFieldValue.IsValid() {
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//return fmt.Errorf("No such field: %s in obj", name)
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return
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}
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// CanSet的属性必须为公开属性(首字母大写)
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if !structFieldValue.CanSet() {
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//return fmt.Errorf("Cannot set %s field value", name)
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return
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}
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// 必须将value转换为struct属性的数据类型，这里必须用到gconv包
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structFieldValue.Set(reflect.ValueOf(gconv.Convert(value, structFieldValue.Type().String())))
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} |