表字段对应值输出

package main

import (
	"database/sql"
	"fmt"
	"log"

	_ "github.com/go-sql-driver/mysql"
)

//先把字段的值都当成字符串
func Rows2SliceMap(rows *sql.Rows) (list []map[string]string) {
	//字段名称
	columns, _ := rows.Columns()
	//多少个字段
	length := len(columns)
	//每一行字段的值
	values := make([]sql.RawBytes, length)
	//保存的是values的内存地址
	pointer := make([]interface{}, length)
	//
	for i := 0; i < length; i++ {
		pointer[i] = &values[i]
	}
	//
	for rows.Next() {
		//把参数展开，把每一行的值存到指定的内存地址去，循环覆盖，values也就跟着被赋值了
		rows.Scan(pointer...)
		//每一行
		row := make(map[string]string)
		for i := 0; i < length; i++ {
			fmt.Println(values[i])
			row[columns[i]] = string(values[i])
		}
		list = append(list, row)
	}
	//
	return
}
func main() {
	db, err := sql.Open("mysql", "root:123456@tcp(127.0.0.1:3306)/wuren_admin?charset=utf8")
	if err != nil {
		log.Println(err.Error())
	}
	err = db.Ping()
	if err != nil {
		log.Println(err.Error())
	}
	rows, _ := db.Query("select * from admin")
	defer rows.Close()
	list := Rows2SliceMap(rows)
	for k, v := range list {
		fmt.Println(k)
		fmt.Println(v["id"], v["name"], v["telephone"])
	}
}