- 实现部分随机数算法

- 实现map，struct互转
- 实现一些中文字符串相关的方法

utils/chinese/chinese.go

+/**
+ * @Time    :2022/3/21 9:10
+ * @Author  :ZhangXiaoyu
+ */
+
+package chinese
+
+var Chinese = new(chinese)
+
+type chinese struct{}
+
+// Len
+/**
+ *  @Description: 获取中文字符串长度
+ *  @receiver c
+ *  @param str
+ *  @return int
+ */
+func (c chinese) Len(str string) int {
+	rt := []rune(str)
+	return len(rt)
+}
+
+
+// Cut
+/**
+ *  @Description: 截取中文字符串
+ *  @receiver c
+ *  @param str
+ *  @param start
+ *  @param end
+ *  @return string
+ */
+func (c chinese) Cut(str string, start int, end int) string {
+	rt := []rune(str)
+	return string(rt[start:end])
+}

utils/mapstruct/mapstruct.go

+/**
+ * @Time    :2022/3/30 16:15
+ * @Author  :ZhangXiaoyu
+ */
+
+package mapstruct
+
+import (
+	"github.com/json-iterator/go"
+	"github.com/mitchellh/mapstructure"
+	"reflect"
+)
+
+var (
+	json = jsoniter.ConfigCompatibleWithStandardLibrary
+)
+
+type User struct {
+	Name        string   `json:"name"`
+	PhoneNumber string   `json:"phone_number"`
+	UserName    string   `json:"userName"`
+	Hobbies     []string `json:"hobbies"`
+}
+
+// MapToStruct0
+/**
+ *  @Description: Map转Struct
+ *  @param m
+ *  @param data
+ *  @return err
+ */
+func MapToStruct0(m map[string]interface{}, data interface{}) (err error) {
+	err = mapstructure.Decode(m, &data)
+	return
+}
+
+// MapToStruct
+/**
+ *  @Description: Map转Struct
+ *  @param m
+ *  @param data
+ *  @return err
+ */
+func MapToStruct(m map[string]interface{}, data interface{}) (err error) {
+	// 序列化
+	arr, err := json.Marshal(m)
+	if err != nil {
+		return
+	}
+	// 反序列化
+	err2 := json.Unmarshal(arr, &data)
+	if err2 != nil {
+		return
+	}
+	return
+}
+
+// StructToMap
+/**
+ *  @Description: Struct转Map
+ *  @param obj
+ *  @return map[string]interface{}
+ */
+func StructToMap(obj interface{}) map[string]interface{} {
+	types := reflect.TypeOf(obj)
+	values := reflect.ValueOf(obj)
+	var data = make(map[string]interface{})
+	for i := 0; i < types.NumField(); i++ {
+		data[types.Field(i).Name] = values.Field(i).Interface()
+	}
+	return data
+}

utils/random/rand.go

+/**
+ * @Time    :2022/3/29 9:08
+ * @Author  :ZhangXiaoyu
+ */
+
+package random
+
+import (
+	"fmt"
+	"math/rand"
+	"strings"
+	"sync"
+	"time"
+)
+
+const (
+	// CAPITAL 包含大写字母
+	CAPITAL = 1
+	// LOWERCASE 包含小写字母
+	LOWERCASE = 2
+	// SPECIAL 包含特殊字符
+	SPECIAL = 4
+	// NUMBER 包含数字
+	NUMBER = 8
+)
+
+var (
+	// 设置随机种子
+	r = rand.New(rand.NewSource(time.Now().Unix()))
+	// 大写字母
+	capital *[]int
+	// 小写字母
+	lowercase *[]int
+	// 特殊符号
+	special *[]int
+	// 数字
+	number *[]int
+
+	once sync.Once
+)
+
+// RandInt
+/**
+ *  @Description: 随机整数
+ *  @param start
+ *  @param end
+ *  @return v
+ */
+func RandInt(min, max int) (v int) {
+	return r.Intn(max-min) + min
+}
+
+// RandFloat
+/**
+ *  @Description: 随机小数
+ *  @param min
+ *  @param max
+ *  @return v
+ */
+func RandFloat(min, max float64) (v float64) {
+	return min + r.Float64()*(max-min)
+}
+
+// initASCII
+/**
+ *  @Description: 初始化ASCII码列表
+ */
+func initASCII() {
+	once.Do(func() {
+		fmt.Println("初始化列表")
+		// 大写字母
+		c := make([]int, 26)
+		for i := 0; i < 26; i++ {
+			c[i] = 65 + i
+		}
+		// 小写字母
+		capital = &c
+		l := make([]int, 26)
+		for i := 0; i < 26; i++ {
+			l[i] = 97 + i
+		}
+		lowercase = &l
+		// 数字
+		n := make([]int, 10)
+		for i := 0; i < 10; i++ {
+			n[i] = 48 + i
+		}
+		number = &n
+		// 特殊字符(. @$!%*#_~?&^)
+		s := []int{46, 64, 36, 33, 37, 42, 35, 95, 126, 63, 38, 94}
+		special = &s
+	})
+	return
+}
+
+// RandString
+/**
+ *  @Description: 随机生成字符串
+ *  @param n 字符串长度
+ *  @param mode 字符串模式 random.NUMBER|random.LOWERCASE|random.SPECIAL|random.CAPITAL)
+ *  @return str 生成的字符串
+ */
+func RandString(n int, mode int) (str string) {
+	initASCII()
+	var ascii []int
+	if mode&CAPITAL >= CAPITAL {
+		ascii = append(ascii, *capital...)
+	}
+	if mode&LOWERCASE >= LOWERCASE {
+		ascii = append(ascii, *lowercase...)
+	}
+	if mode&SPECIAL >= SPECIAL {
+		ascii = append(ascii, *special...)
+	}
+	if mode&NUMBER >= NUMBER {
+		ascii = append(ascii, *number...)
+	}
+	if len(ascii) == 0 {
+		return
+	}
+	var build strings.Builder
+	for i := 0; i < n; i++ {
+		build.WriteString(string(rune(ascii[r.Intn(len(ascii))])))
+	}
+	str = build.String()
+	return
+}