想用反射做一个map数组转结构体数组的方法，代码如下，不知道怎么把反射生成的结构体加进数组里，求大佬帮忙

package main

import (
    "errors"
    "fmt"
    "reflect"
    "strings"
)

type User struct {
    Id   int
    Name string
    Sex  string
}

var users []*User

func main() {
    mList := []map[string]interface{}{
        {"Id": 213, "Name": "zhaoliu", "Sex": "男"},
        {"Id": 56, "Name": "zhangsan", "Sex": "男"},
        {"Id": 7, "Name": "lisi", "Sex": "女"},
        {"Id": 978, "Name": "wangwu", "Sex": "男"},
    }

    mapToStruct(mList, &users)
    fmt.Printf("users: %+v\n", users[0])
}

func mapToStruct(mList []map[string]interface{}, model interface{}) (err error) {
    val := reflect.Indirect(reflect.ValueOf(model))
    typ := val.Type()

    for _, r := range mList {
        mVal := reflect.Indirect(reflect.New(typ.Elem().Elem())).Addr()

        for key, val := range r {
            err = setField(mVal.Interface(), key, val)

            if err != nil {
                return err
            }

        }

        v, ok := mVal.Interface().(*User)
        if ok {
            users = append(users, v)
        }
    }

    return err
}

//用map的值替换结构的值
func setField(obj interface{}, name string, value interface{}) error {
    // 将首字母转换为大写
    sl := strings.Split(name, "")
    sl[0] = strings.ToUpper(sl[0])
    name = strings.Join(sl, "")

    structValue := reflect.ValueOf(obj).Elem() //结构体属性值
    //fmt.Printf("structValue: %+v\n", structValue)
    structFieldValue := structValue.FieldByName(name) //结构体单个属性值
    //fmt.Printf("structFieldValue: %+v\n", structFieldValue)
    if !structFieldValue.IsValid() {
        return fmt.Errorf("No such field: %s in obj", name)
    }

    if !structFieldValue.CanSet() {
        return fmt.Errorf("Cannot set %s field value", name)
    }

    structFieldType := structFieldValue.Type() //结构体的类型
    val := reflect.ValueOf(value)              //map值的反射值

    if structFieldType != val.Type() {
        return errors.New("type is err")
    }

    structFieldValue.Set(val)
    return nil
}

emmmm...你这样还要interface{}干嘛，你不能在方法里面调结构体呀，我这做的是一个组件，要支持任意类型的结构体。

好吧，我的理解错了。

package main

import (
    "bytes"
    "encoding/gob"
    "errors"
    "fmt"
    "reflect"
    "strings"
)

func main() {
    mList := []map[string]interface{}{
        {"Id": 213, "Name": "zhaoliu", "Sex": "男"},
        {"Id": 56, "Name": "zhangsan", "Sex": "男"},
        {"Id": 7, "Name": "lisi", "Sex": "女"},
        {"Id": 978, "Name": "wangwu", "Sex": "男"},
    }

    type User struct {
        Id   int
        Name string
        Sex  string
    }
    users := []*User{}

    mapToStruct(mList, &users)
    fmt.Printf("users: %+v\n", users)
}

func mapToStruct(mList []map[string]interface{}, model interface{}) (err error) {
    val := reflect.Indirect(reflect.ValueOf(model))
    typ := val.Type()
    for _, r := range mList {
        mVal := reflect.Indirect(reflect.New(typ.Elem().Elem())).Addr()
        for key, val := range r {
            err = setField(mVal.Interface(), key, val)
            if err != nil {
                return err
            }
        }
        val = reflect.Append(val, mVal)
    }
    DeepCopy(model, val.Interface())
    return err
}

//用map的值替换结构的值
func setField(obj interface{}, name string, value interface{}) error {
    // 将首字母转换为大写
    sl := strings.Split(name, "")
    sl[0] = strings.ToUpper(sl[0])
    name = strings.Join(sl, "")

    structValue := reflect.ValueOf(obj).Elem() //结构体属性值
    //fmt.Printf("structValue: %+v\n", structValue)
    structFieldValue := structValue.FieldByName(name) //结构体单个属性值
    //fmt.Printf("structFieldValue: %+v\n", structFieldValue)
    if !structFieldValue.IsValid() {
        return fmt.Errorf("No such field: %s in obj", name)
    }

    if !structFieldValue.CanSet() {
        return fmt.Errorf("Cannot set %s field value", name)
    }

    structFieldType := structFieldValue.Type() //结构体的类型
    val := reflect.ValueOf(value)              //map值的反射值

    if structFieldType != val.Type() {
        return errors.New("type is err")
    }

    structFieldValue.Set(val)
    return nil
}

func DeepCopy(dst, src interface{}) error {
    var buf bytes.Buffer
    if err := gob.NewEncoder(&buf).Encode(src); err != nil {
        return err
    }
    return gob.NewDecoder(bytes.NewBuffer(buf.Bytes())).Decode(dst)
}

谢谢你的答案。