refactor(app): 优化 URL 处理和 JSON 解析逻辑

- 更新应用程序处理程序中的 URL 赋值逻辑，确保静态文件使用原始路径
- 修改缓存数据库的 JSON 解析方法，使用 JsonToObj 函数替代 json.Unmarshal，提升代码可读性和性能
- 在 Map 和 Slice 类型中新增获取四舍五入浮点数的方法，增强数据处理能力
- 在 Obj 类型中添加四舍五入功能，支持精度控制
- 改进数据库查询结果的处理逻辑，确保数据类型的准确性和一致性
- 优化日志格式设置，增强日志信息的可读性

common/map.go

@@ -1,6 +1,7 @@
 package common
 
 import (
+	"bytes"
 	"encoding/json"
 	"errors"
 	"reflect"
@@ -181,9 +182,21 @@ func (that Map) ToJsonString() string {
 }
 
 func (that Map) JsonToMap(jsonStr string, err ...*Error) {
-	e := json.Unmarshal([]byte(jsonStr), &that)
-	if e != nil && len(err) != 0 {
-		err[0].SetError(e)
+	dec := json.NewDecoder(bytes.NewReader([]byte(jsonStr)))
+	dec.UseNumber()
+	e := dec.Decode(&that)
+	if e != nil {
+		if len(err) != 0 {
+			err[0].SetError(e)
+		}
+		return
+	}
+	for k, v := range that {
+		that[k] = fixJsonNumbers(v)
 	}
-
+}
+
+// GetRoundFloat64 获取四舍五入到 precision 位小数的 float64
+func (that Map) GetRoundFloat64(key string, precision int, err ...*Error) float64 {
+	return ObjToRoundFloat64((that)[key], precision, err...)
 }

common/obj.go

@@ -101,3 +101,8 @@ func (that *Obj) ToCeilInt(err ...*Error) int {
 	return v
 
 }
+
+// ToRoundFloat64 获取四舍五入到 precision 位小数的 float64
+func (that *Obj) ToRoundFloat64(precision int, err ...*Error) float64 {
+	return ObjToRoundFloat64(that.Data, precision, err...)
+}

common/objtoobj.go

@@ -1,6 +1,7 @@
 package common
 
 import (
+	"bytes"
 	"encoding/json"
 	"errors"
 	"math"
@@ -18,31 +19,40 @@ func ObjToMap(obj interface{}, e ...*Error) Map {
 		v = nil
 		err = errors.New("没有合适的转换对象！")
 	} else {
-		switch obj.(type) {
+		switch val := obj.(type) {
 		case Map:
-			v = obj.(Map)
+			v = val
 		case map[string]interface{}:
-			v = obj.(map[string]interface{})
+			v = Map(val)
 		case string:
-			v = Map{}
-			e := json.Unmarshal([]byte(obj.(string)), &v)
-			if e != nil {
-				err = errors.New("没有合适的转换对象！" + e.Error())
+			result, e2 := JsonToObj(val)
+			if e2 != nil {
+				err = errors.New("没有合适的转换对象！" + e2.Error())
+				v = nil
+			} else if m, ok := result.(map[string]interface{}); ok {
+				v = m
+			} else {
+				err = errors.New("没有合适的转换对象！")
 				v = nil
 			}
 		default:
-			data, err := json.Marshal(obj)
+			var data []byte
+			data, err = json.Marshal(obj)
 			if err != nil {
 				err = errors.New("没有合适的转换对象！" + err.Error())
 				v = nil
+				break
 			}
-			v = Map{}
-			e := json.Unmarshal(data, &v)
-			if e != nil {
-				err = errors.New("没有合适的转换对象！" + e.Error())
+			result, e2 := JsonToObj(string(data))
+			if e2 != nil {
+				err = errors.New("没有合适的转换对象！" + e2.Error())
+				v = nil
+			} else if m, ok := result.(map[string]interface{}); ok {
+				v = m
+			} else {
+				err = errors.New("没有合适的转换对象！")
 				v = nil
 			}
-
 		}
 	}
 	if len(e) != 0 {
@@ -53,7 +63,7 @@ func ObjToMap(obj interface{}, e ...*Error) Map {
 
 func ObjToMapArray(obj interface{}, e ...*Error) []Map {
 	s := ObjToSlice(obj, e...)
-	res := []Map{}
+	res := make([]Map, 0, len(s))
 	for i := 0; i < len(s); i++ {
 		res = append(res, s.GetMap(i))
 	}
@@ -69,25 +79,39 @@ func ObjToSlice(obj interface{}, e ...*Error) Slice {
 		v = nil
 		err = errors.New("没有合适的转换对象！")
 	} else {
-		switch obj.(type) {
+		switch val := obj.(type) {
 		case Slice:
-			v = obj.(Slice)
+			v = val
 		case []interface{}:
-			v = obj.([]interface{})
+			v = Slice(val)
 		case []string:
-			v = Slice{}
-			for i := 0; i < len(obj.([]string)); i++ {
-				v = append(v, obj.([]string)[i])
+			v = make(Slice, len(val))
+			for i, s := range val {
+				v[i] = s
 			}
 		case string:
-			v = Slice{}
-			err = json.Unmarshal([]byte(obj.(string)), &v)
-
+			result, e2 := JsonToObj(val)
+			if e2 != nil {
+				err = e2
+			} else if s, ok := result.([]interface{}); ok {
+				v = s
+			} else {
+				err = errors.New("没有合适的转换对象！")
+			}
 		default:
-			v = Slice{}
 			var data []byte
 			data, err = json.Marshal(obj)
-			err = json.Unmarshal(data, &v)
+			if err != nil {
+				break
+			}
+			result, e2 := JsonToObj(string(data))
+			if e2 != nil {
+				err = e2
+			} else if s, ok := result.([]interface{}); ok {
+				v = s
+			} else {
+				err = errors.New("没有合适的转换对象！")
+			}
 		}
 	}
 
@@ -104,22 +128,24 @@ func ObjToTime(obj interface{}, e ...*Error) *time.Time {
 	//字符串类型，只支持标准mysql datetime格式
 	if tInt == 0 {
 		tStr := ObjToStr(obj)
-		timeNewStr := ""
-		timeNewStrs := strings.Split(tStr, "-")
-		for _, v := range timeNewStrs {
-			if v == "" {
-				continue
-			}
-			if len(v) == 1 {
-				v = "0" + v
-			}
-			if timeNewStr == "" {
-				timeNewStr = v
-				continue
-			}
-			timeNewStr = timeNewStr + "-" + v
+		// 先分离日期和时间部分，再对日期各段补零，避免时间中的数字被误处理
+		datePart := tStr
+		timePart := ""
+		if idx := strings.Index(tStr, " "); idx > 0 {
+			datePart = tStr[:idx]
+			timePart = tStr[idx:] // 含前导空格
 		}
-		tStr = timeNewStr
+		dateSegs := strings.Split(datePart, "-")
+		for i, seg := range dateSegs {
+			if seg == "" {
+				continue
+			}
+			if len(seg) == 1 {
+				dateSegs[i] = "0" + seg
+			}
+		}
+		tStr = strings.Join(dateSegs, "-") + timePart
+
 		if len(tStr) > 18 {
 			t, e := time.Parse("2006-01-02 15:04:05", tStr)
 			if e == nil {
@@ -146,31 +172,30 @@ func ObjToTime(obj interface{}, e ...*Error) *time.Time {
 				return &t
 			}
 		}
-
 	}
 
+	// 缓存字符串，避免重复调用
+	tIntStr := ObjToStr(tInt)
+	tIntLen := len(tIntStr)
+
 	//纳秒级别
-	if len(ObjToStr(tInt)) > 16 {
-		//t := time.Time{}.Add(time.Nanosecond * time.Duration(tInt))
+	if tIntLen > 16 {
 		t := time.UnixMicro(tInt / 1000)
 		return &t
 		//微秒级别
-	} else if len(ObjToStr(tInt)) > 13 {
-		//t := time.Time{}.Add(time.Microsecond * time.Duration(tInt))
+	} else if tIntLen > 13 {
 		t := time.UnixMicro(tInt)
 		return &t
 		//毫秒级别
-	} else if len(ObjToStr(tInt)) > 10 {
-		//t := time.Time{}.Add(time.Millisecond * time.Duration(tInt))
+	} else if tIntLen > 10 {
 		t := time.UnixMilli(tInt)
 		return &t
 		//秒级别
-	} else if len(ObjToStr(tInt)) > 9 {
-		//t := time.Time{}.Add(time.Second * time.Duration(tInt))
+	} else if tIntLen > 9 {
 		t := time.Unix(tInt, 0)
 		return &t
-	} else if len(ObjToStr(tInt)) > 3 {
-		t, e := time.Parse("2006", ObjToStr(tInt))
+	} else if tIntLen > 3 {
+		t, e := time.Parse("2006", tIntStr)
 		if e == nil {
 			return &t
 		}
@@ -184,37 +209,34 @@ func ObjToFloat64(obj interface{}, e ...*Error) float64 {
 	v := float64(0)
 
 	if obj == nil {
-
 		err = errors.New("没有合适的转换对象！")
 	} else {
-
-		switch obj.(type) {
+		switch val := obj.(type) {
 		case int:
-			v = float64(obj.(int))
+			v = float64(val)
 		case int64:
-			v = float64(obj.(int64))
+			v = float64(val)
 		case string:
-			value, e := strconv.ParseFloat(obj.(string), 64)
-			if e != nil {
-				v = float64(0)
-				err = e
+			value, e2 := strconv.ParseFloat(val, 64)
+			if e2 != nil {
+				err = e2
 			} else {
 				v = value
 			}
 		case float64:
-			v = obj.(float64)
+			v = val
 		case float32:
-			v = float64(obj.(float32))
-		case uint8:
-			value, e := strconv.ParseFloat(obj.(string), 64)
-			if e != nil {
-				v = float64(0)
-				err = e
+			// 通过 string 中转避免 float32→float64 精度膨胀（如 float32(1.2) 直接转得 1.200000047...）
+			v, _ = strconv.ParseFloat(strconv.FormatFloat(float64(val), 'f', -1, 32), 64)
+		case []byte:
+			// 数据库 driver 有时以 []byte 返回数值字符串
+			value, e2 := strconv.ParseFloat(string(val), 64)
+			if e2 != nil {
+				err = e2
 			} else {
 				v = value
 			}
 		default:
-			v = float64(0)
 			err = errors.New("没有合适的转换对象！")
 		}
 	}
@@ -234,25 +256,33 @@ func ObjToFloat64(obj interface{}, e ...*Error) float64 {
 	return v
 }
 
+// ObjToRoundFloat64 将 obj 转为 float64 后四舍五入到 precision 位小数。
+// precision < 0 时不做舍入，直接返回原始 float64。
+func ObjToRoundFloat64(obj interface{}, precision int, e ...*Error) float64 {
+	f := ObjToFloat64(obj, e...)
+	if precision < 0 {
+		return f
+	}
+	pow := math.Pow10(precision)
+	return math.Round(f*pow) / pow
+}
+
 // 向上取整
 func ObjToCeilInt64(obj interface{}, e ...*Error) int64 {
 	f := ObjToCeilFloat64(obj, e...)
-	return ObjToInt64(math.Ceil(f))
-
+	return int64(f)
 }
 
 // 向上取整
 func ObjToCeilFloat64(obj interface{}, e ...*Error) float64 {
 	f := ObjToFloat64(obj, e...)
 	return math.Ceil(f)
-
 }
 
 // 向上取整
 func ObjToCeilInt(obj interface{}, e ...*Error) int {
 	f := ObjToCeilFloat64(obj, e...)
 	return ObjToInt(f)
-
 }
 
 func ObjToInt64(obj interface{}, e ...*Error) int64 {
@@ -260,36 +290,43 @@ func ObjToInt64(obj interface{}, e ...*Error) int64 {
 	v := int64(0)
 
 	if obj == nil {
-
 		err = errors.New("没有合适的转换对象！")
 	} else {
-		switch obj.(type) {
+		switch val := obj.(type) {
 		case int:
-			v = int64(obj.(int))
+			v = int64(val)
 		case int64:
-			v = obj.(int64)
+			v = val
 		case string:
-			value, e := StrToInt(obj.(string))
-			if e != nil {
-				v = int64(0)
-				err = e
+			value, e2 := StrToInt(val)
+			if e2 != nil {
+				// fallback：处理 "1.20" 这类带小数点的整数字符串
+				if fv, fe := strconv.ParseFloat(val, 64); fe == nil {
+					v = int64(fv)
+				} else {
+					err = e2
+				}
 			} else {
 				v = int64(value)
 			}
-		case uint8:
-			value, e := StrToInt(obj.(string))
-			if e != nil {
-				v = int64(0)
-				err = e
+		case []byte:
+			// 数据库 driver 有时以 []byte 返回整数字符串
+			value, e2 := StrToInt(string(val))
+			if e2 != nil {
+				// fallback：处理 "1.20" 这类带小数点的整数字符串
+				if fv, fe := strconv.ParseFloat(string(val), 64); fe == nil {
+					v = int64(fv)
+				} else {
+					err = e2
+				}
 			} else {
 				v = int64(value)
 			}
 		case float64:
-			v = int64(obj.(float64))
+			v = int64(val)
 		case float32:
-			v = int64(obj.(float32))
+			v = int64(val)
 		default:
-			v = int64(0)
 			err = errors.New("没有合适的转换对象！")
 		}
 	}
@@ -309,18 +346,19 @@ func ObjToBool(obj interface{}, e ...*Error) bool {
 	v := false
 
 	if obj == nil {
-
 		err = errors.New("没有合适的转换对象！")
 	} else {
-		switch obj.(type) {
+		switch val := obj.(type) {
 		case bool:
-			v = obj.(bool)
+			v = val
 		default:
-			toInt := ObjToInt(obj)
-			if toInt != 0 {
+			var intErr Error
+			toInt := ObjToInt(obj, &intErr)
+			if intErr.GetError() != nil {
+				err = errors.New("没有合适的转换对象！")
+			} else if toInt != 0 {
 				v = true
 			}
-			err = errors.New("没有合适的转换对象！")
 		}
 	}
 	if len(e) != 0 {
@@ -330,55 +368,92 @@ func ObjToBool(obj interface{}, e ...*Error) bool {
 }
 
 func ObjToStr(obj interface{}) string {
-	//	fmt.Println(reflect.ValueOf(obj).Type().String() )
 	str := ""
 	if obj == nil {
 		return str
 	}
-	switch obj.(type) {
+	switch val := obj.(type) {
 	case int:
-		str = strconv.Itoa(obj.(int))
+		str = strconv.Itoa(val)
 	case uint8:
-		str = obj.(string)
+		str = strconv.Itoa(int(val))
 	case int64:
-		str = strconv.FormatInt(obj.(int64), 10)
+		str = strconv.FormatInt(val, 10)
 	case []byte:
-		str = string(obj.([]byte))
+		str = string(val)
 	case string:
-		str = obj.(string)
+		str = val
 	case float64:
-		str = strconv.FormatFloat(obj.(float64), 'f', -1, 64)
+		str = strconv.FormatFloat(val, 'f', -1, 64)
+	case float32:
+		str = strconv.FormatFloat(float64(val), 'f', -1, 32)
+	case bool:
+		str = strconv.FormatBool(val)
 	default:
 		strbte, err := json.MarshalIndent(obj, "", "\t")
-
 		if err == nil {
 			str = string(strbte)
 		}
-
 	}
 
 	return str
 }
 
-// 转换为Map
-func StrToMap(string string) Map {
-	data := Map{}
-	data.JsonToMap(string)
+// JsonToObj 将 JSON 字符串反序列化为 interface{}，保留数字原始类型。
+// 标准 json.Unmarshal 会把所有 JSON 数字变成 float64，本函数保留整数为 int64、小数为 float64。
+//
+//	JsonToObj(`{"id":2,"price":1.20}`)  → map{"id": int64(2), "price": float64(1.2)}
+//	JsonToObj(`[1, 2.5, "a"]`)          → []interface{}{int64(1), float64(2.5), "a"}
+func JsonToObj(jsonStr string) (interface{}, error) {
+	dec := json.NewDecoder(bytes.NewReader([]byte(jsonStr)))
+	dec.UseNumber()
+	var result interface{}
+	if err := dec.Decode(&result); err != nil {
+		return nil, err
+	}
+	return fixJsonNumbers(result), nil
+}
 
+// fixJsonNumbers 递归将 json.Number 转为 int64 或 float64
+func fixJsonNumbers(v interface{}) interface{} {
+	switch val := v.(type) {
+	case json.Number:
+		if n, err := val.Int64(); err == nil {
+			return n
+		}
+		if f, err := val.Float64(); err == nil {
+			return f
+		}
+		return string(val)
+	case map[string]interface{}:
+		for k, item := range val {
+			val[k] = fixJsonNumbers(item)
+		}
+		return val
+	case []interface{}:
+		for i, item := range val {
+			val[i] = fixJsonNumbers(item)
+		}
+		return val
+	default:
+		return val
+	}
+}
+
+// 转换为Map
+func StrToMap(s string) Map {
+	data := Map{}
+	data.JsonToMap(s)
 	return data
 }
 
 // 转换为Slice
-func StrToSlice(string string) Slice {
-
-	data := ObjToSlice(string)
-
-	return data
+func StrToSlice(s string) Slice {
+	return ObjToSlice(s)
 }
 
 // 字符串数组: a1,a2,a3转["a1","a2","a3"]
 func StrArrayToJsonStr(a string) string {
-
 	if len(a) > 2 {
 		if a[0] == ',' {
 			a = Substr(a, 1, len(a)-1)
@@ -386,7 +461,6 @@ func StrArrayToJsonStr(a string) string {
 		if a[len(a)-1] == ',' {
 			a = Substr(a, 0, len(a)-1)
 		}
-		//a = strings.Replace(a, ",", `,`, -1)
 		a = `[` + a + `]`
 	} else {
 		a = "[]"
@@ -394,13 +468,11 @@ func StrArrayToJsonStr(a string) string {
 	return a
 }
 
-// 字符串数组: a1,a2,a3转["a1","a2","a3"]
+// 字符串数组: ["a1","a2","a3"]转,a1,a2,a3,
 func JsonStrToStrArray(a string) string {
-	//a = strings.Replace(a, `"`, "", -1)
 	if len(a) != 0 {
 		a = Substr(a, 1, len(a)-2)
 	}
-
 	return "," + a + ","
 }
 
@@ -408,5 +480,4 @@ func JsonStrToStrArray(a string) string {
 func StrToInt(s string) (int, error) {
 	i, err := strconv.Atoi(s)
 	return i, err
-
 }

common/objtoobj_test.go

@@ -0,0 +1,917 @@
+package common
+
+import (
+	"math"
+	"testing"
+	"time"
+)
+
+// ─────────────────────────────────────────────
+// 辅助：检查 Error 是否携带错误
+// ─────────────────────────────────────────────
+func hasErr(e *Error) bool {
+	return e.GetError() != nil
+}
+
+func newErr() *Error {
+	return &Error{}
+}
+
+// ─────────────────────────────────────────────
+// ObjToMap
+// ─────────────────────────────────────────────
+func TestObjToMap(t *testing.T) {
+	t.Run("nil returns nil with error", func(t *testing.T) {
+		e := newErr()
+		v := ObjToMap(nil, e)
+		if v != nil || !hasErr(e) {
+			t.Errorf("nil: got %v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("Map passthrough", func(t *testing.T) {
+		input := Map{"a": 1}
+		v := ObjToMap(input)
+		if v == nil || v["a"] != 1 {
+			t.Errorf("Map passthrough failed: %v", v)
+		}
+	})
+
+	t.Run("map[string]interface{} cast", func(t *testing.T) {
+		input := map[string]interface{}{"b": 2}
+		v := ObjToMap(input)
+		if v == nil || v["b"] != 2 {
+			t.Errorf("map[string]interface{} cast failed: %v", v)
+		}
+	})
+
+	t.Run("valid JSON string - integer preserved as int64", func(t *testing.T) {
+		v := ObjToMap(`{"x":42}`)
+		if v == nil || v["x"] != int64(42) {
+			t.Errorf("JSON string: got %v (type %T), want int64(42)", v["x"], v["x"])
+		}
+	})
+
+	t.Run("invalid JSON string returns nil with error", func(t *testing.T) {
+		e := newErr()
+		v := ObjToMap(`not json`, e)
+		if v != nil || !hasErr(e) {
+			t.Errorf("invalid JSON: got %v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("struct default branch marshal+unmarshal", func(t *testing.T) {
+		type S struct{ Name string }
+		v := ObjToMap(S{Name: "hello"})
+		if v == nil || v["Name"] != "hello" {
+			t.Errorf("struct default: %v", v)
+		}
+	})
+
+	t.Run("marshal fail (channel) returns nil with error", func(t *testing.T) {
+		e := newErr()
+		ch := make(chan int)
+		v := ObjToMap(ch, e)
+		if v != nil || !hasErr(e) {
+			t.Errorf("channel marshal: got %v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("default marshal OK but unmarshal to map fails (int)", func(t *testing.T) {
+		// json.Marshal(123) = "123", which can't unmarshal to Map
+		e := newErr()
+		v := ObjToMap(123, e)
+		if v != nil || !hasErr(e) {
+			t.Errorf("int default: got %v err=%v", v, e.GetError())
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// ObjToMapArray
+// ─────────────────────────────────────────────
+func TestObjToMapArray(t *testing.T) {
+	t.Run("nil returns empty", func(t *testing.T) {
+		e := newErr()
+		v := ObjToMapArray(nil, e)
+		if len(v) != 0 || !hasErr(e) {
+			t.Errorf("nil: got %v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("JSON array of maps", func(t *testing.T) {
+		v := ObjToMapArray(`[{"a":1},{"b":2}]`)
+		if len(v) != 2 {
+			t.Errorf("expected 2 elements, got %d", len(v))
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// ObjToSlice
+// ─────────────────────────────────────────────
+func TestObjToSlice(t *testing.T) {
+	t.Run("nil returns nil with error", func(t *testing.T) {
+		e := newErr()
+		v := ObjToSlice(nil, e)
+		if v != nil || !hasErr(e) {
+			t.Errorf("nil: got %v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("Slice passthrough", func(t *testing.T) {
+		input := Slice{1, 2, 3}
+		v := ObjToSlice(input)
+		if len(v) != 3 {
+			t.Errorf("Slice passthrough: %v", v)
+		}
+	})
+
+	t.Run("[]interface{} cast", func(t *testing.T) {
+		input := []interface{}{4, 5}
+		v := ObjToSlice(input)
+		if len(v) != 2 || v[0] != 4 {
+			t.Errorf("[]interface{} cast: %v", v)
+		}
+	})
+
+	t.Run("[]string conversion", func(t *testing.T) {
+		input := []string{"a", "b", "c"}
+		v := ObjToSlice(input)
+		if len(v) != 3 || v[0] != "a" {
+			t.Errorf("[]string: %v", v)
+		}
+	})
+
+	t.Run("valid JSON array string", func(t *testing.T) {
+		v := ObjToSlice(`[1,2,3]`)
+		if len(v) != 3 {
+			t.Errorf("JSON array: %v", v)
+		}
+	})
+
+	t.Run("invalid JSON string returns error", func(t *testing.T) {
+		e := newErr()
+		v := ObjToSlice(`not json`, e)
+		if !hasErr(e) {
+			t.Errorf("invalid JSON: got %v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("default: []int marshals to JSON array", func(t *testing.T) {
+		v := ObjToSlice([]int{10, 20, 30})
+		if len(v) != 3 {
+			t.Errorf("[]int default: %v", v)
+		}
+	})
+
+	t.Run("default: marshal fail (channel) returns error", func(t *testing.T) {
+		e := newErr()
+		ch := make(chan int)
+		ObjToSlice(ch, e)
+		if !hasErr(e) {
+			t.Errorf("channel marshal: expected error")
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// ObjToTime
+// ─────────────────────────────────────────────
+func TestObjToTime(t *testing.T) {
+	mustParse := func(layout, s string) time.Time {
+		tt, err := time.Parse(layout, s)
+		if err != nil {
+			panic(err)
+		}
+		return tt
+	}
+
+	t.Run("full datetime string", func(t *testing.T) {
+		ts := ObjToTime("2006-01-02 15:04:05")
+		want := mustParse("2006-01-02 15:04:05", "2006-01-02 15:04:05")
+		if ts == nil || !ts.Equal(want) {
+			t.Errorf("full datetime: %v", ts)
+		}
+	})
+
+	t.Run("single digit day+time (bug fix)", func(t *testing.T) {
+		ts := ObjToTime("2006-1-2 15:04:05")
+		want := mustParse("2006-01-02 15:04:05", "2006-01-02 15:04:05")
+		if ts == nil || !ts.Equal(want) {
+			t.Errorf("single digit day+time: got %v, want %v", ts, want)
+		}
+	})
+
+	t.Run("datetime without seconds", func(t *testing.T) {
+		ts := ObjToTime("2006-01-02 15:04")
+		want := mustParse("2006-01-02 15:04", "2006-01-02 15:04")
+		if ts == nil || !ts.Equal(want) {
+			t.Errorf("datetime without seconds: %v", ts)
+		}
+	})
+
+	t.Run("date+hour only", func(t *testing.T) {
+		ts := ObjToTime("2006-01-02 15")
+		want := mustParse("2006-01-02 15", "2006-01-02 15")
+		if ts == nil || !ts.Equal(want) {
+			t.Errorf("date+hour: %v", ts)
+		}
+	})
+
+	t.Run("date only", func(t *testing.T) {
+		ts := ObjToTime("2006-01-02")
+		want := mustParse("2006-01-02", "2006-01-02")
+		if ts == nil || !ts.Equal(want) {
+			t.Errorf("date only: %v", ts)
+		}
+	})
+
+	t.Run("month only", func(t *testing.T) {
+		ts := ObjToTime("2006-01")
+		want := mustParse("2006-01", "2006-01")
+		if ts == nil || !ts.Equal(want) {
+			t.Errorf("month only: %v", ts)
+		}
+	})
+
+	t.Run("invalid string returns nil", func(t *testing.T) {
+		ts := ObjToTime("not-a-date")
+		if ts != nil {
+			t.Errorf("invalid string: expected nil, got %v", ts)
+		}
+	})
+
+	t.Run("unix second timestamp (10 digits)", func(t *testing.T) {
+		ts := ObjToTime(int64(1700000000)) // 10 digits
+		if ts == nil {
+			t.Error("second timestamp: got nil")
+		}
+		want := time.Unix(1700000000, 0)
+		if !ts.Equal(want) {
+			t.Errorf("second: %v vs %v", ts, want)
+		}
+	})
+
+	t.Run("unix millisecond timestamp (13 digits)", func(t *testing.T) {
+		ts := ObjToTime(int64(1700000000000)) // 13 digits
+		if ts == nil {
+			t.Error("millisecond timestamp: got nil")
+		}
+		want := time.UnixMilli(1700000000000)
+		if !ts.Equal(want) {
+			t.Errorf("millisecond: %v vs %v", ts, want)
+		}
+	})
+
+	t.Run("unix microsecond timestamp (16 digits)", func(t *testing.T) {
+		ts := ObjToTime(int64(1700000000000000)) // 16 digits
+		if ts == nil {
+			t.Error("microsecond timestamp: got nil")
+		}
+		want := time.UnixMicro(1700000000000000)
+		if !ts.Equal(want) {
+			t.Errorf("microsecond: %v vs %v", ts, want)
+		}
+	})
+
+	t.Run("nanosecond timestamp (19 digits)", func(t *testing.T) {
+		ts := ObjToTime(int64(1700000000000000000)) // 19 digits -> nano branch
+		if ts == nil {
+			t.Error("nanosecond timestamp: got nil")
+		}
+		want := time.UnixMicro(1700000000000000000 / 1000)
+		if !ts.Equal(want) {
+			t.Errorf("nanosecond: %v vs %v", ts, want)
+		}
+	})
+
+	t.Run("year int (4 digits)", func(t *testing.T) {
+		ts := ObjToTime(int64(2024))
+		if ts == nil {
+			t.Error("year int: got nil")
+		}
+		want := mustParse("2006", "2024")
+		if !ts.Equal(want) {
+			t.Errorf("year: %v vs %v", ts, want)
+		}
+	})
+
+	t.Run("small int returns nil", func(t *testing.T) {
+		ts := ObjToTime(int64(1))
+		if ts != nil {
+			t.Errorf("small int: expected nil, got %v", ts)
+		}
+	})
+
+	t.Run("nil returns nil", func(t *testing.T) {
+		ts := ObjToTime(nil)
+		if ts != nil {
+			t.Errorf("nil: expected nil, got %v", ts)
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// ObjToFloat64
+// ─────────────────────────────────────────────
+func TestObjToFloat64(t *testing.T) {
+	cases := []struct {
+		name    string
+		input   interface{}
+		want    float64
+		wantErr bool
+	}{
+		{"nil", nil, 0, true},
+		{"int", 42, 42.0, false},
+		{"int64", int64(100), 100.0, false},
+		{"string valid", "3.14", 3.14, false},
+		{"string invalid", "abc", 0, true},
+		{"float64", float64(1.5), 1.5, false},
+		// Fix4: float32 通过 strconv 转换，消除精度膨胀噪声
+		{"float32 no precision inflation", float32(1.2), 1.2, false},
+		{"[]byte valid", []byte("2.71"), 2.71, false},
+		{"[]byte invalid", []byte("xyz"), 0, true},
+		{"unknown type", struct{}{}, 0, true},
+	}
+
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			e := newErr()
+			got := ObjToFloat64(c.input, e)
+			if math.Abs(got-c.want) > 1e-9 {
+				t.Errorf("value: got %v, want %v", got, c.want)
+			}
+			if hasErr(e) != c.wantErr {
+				t.Errorf("error: got hasErr=%v, wantErr=%v (err=%v)", hasErr(e), c.wantErr, e.GetError())
+			}
+		})
+	}
+
+	t.Run("NaN is caught and zeroed", func(t *testing.T) {
+		e := newErr()
+		v := ObjToFloat64(math.NaN(), e)
+		if v != 0 || !hasErr(e) {
+			t.Errorf("NaN: got %v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("Inf is caught and zeroed", func(t *testing.T) {
+		e := newErr()
+		v := ObjToFloat64(math.Inf(1), e)
+		if v != 0 || !hasErr(e) {
+			t.Errorf("Inf: got %v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("-Inf is caught and zeroed", func(t *testing.T) {
+		e := newErr()
+		v := ObjToFloat64(math.Inf(-1), e)
+		if v != 0 || !hasErr(e) {
+			t.Errorf("-Inf: got %v err=%v", v, e.GetError())
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// ObjToRoundFloat64
+// ─────────────────────────────────────────────
+func TestObjToRoundFloat64(t *testing.T) {
+	t.Run("precision 2 rounds correctly", func(t *testing.T) {
+		v := ObjToRoundFloat64(3.5000001, 2)
+		if v != 3.5 {
+			t.Errorf("got %v, want 3.5", v)
+		}
+	})
+
+	t.Run("precision 0 rounds to integer", func(t *testing.T) {
+		v := ObjToRoundFloat64(2.7, 0)
+		if v != 3.0 {
+			t.Errorf("got %v, want 3.0", v)
+		}
+	})
+
+	t.Run("precision -1 returns raw float", func(t *testing.T) {
+		v := ObjToRoundFloat64(1.23456789, -1)
+		if math.Abs(v-1.23456789) > 1e-9 {
+			t.Errorf("got %v, want ~1.23456789", v)
+		}
+	})
+
+	t.Run("string input with float noise", func(t *testing.T) {
+		v := ObjToRoundFloat64("3.15000001", 2)
+		if v != 3.15 {
+			t.Errorf("got %v, want 3.15", v)
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// ObjToCeil*
+// ─────────────────────────────────────────────
+func TestObjToCeil(t *testing.T) {
+	t.Run("ObjToCeilInt64 rounds up", func(t *testing.T) {
+		v := ObjToCeilInt64(1.1)
+		if v != 2 {
+			t.Errorf("got %d, want 2", v)
+		}
+	})
+
+	t.Run("ObjToCeilInt64 already integer", func(t *testing.T) {
+		v := ObjToCeilInt64(float64(3))
+		if v != 3 {
+			t.Errorf("got %d, want 3", v)
+		}
+	})
+
+	t.Run("ObjToCeilInt64 no double ceil (bug fix)", func(t *testing.T) {
+		// 3.0 -> Ceil(3.0)=3.0 -> int64(3), NOT Ceil(3.0) again
+		v := ObjToCeilInt64(float64(3))
+		if v != 3 {
+			t.Errorf("double ceil: got %d, want 3", v)
+		}
+	})
+
+	t.Run("ObjToCeilFloat64", func(t *testing.T) {
+		v := ObjToCeilFloat64(1.1)
+		if v != 2.0 {
+			t.Errorf("got %v, want 2.0", v)
+		}
+	})
+
+	t.Run("ObjToCeilInt", func(t *testing.T) {
+		v := ObjToCeilInt(2.3)
+		if v != 3 {
+			t.Errorf("got %d, want 3", v)
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// ObjToInt64
+// ─────────────────────────────────────────────
+func TestObjToInt64(t *testing.T) {
+	cases := []struct {
+		name    string
+		input   interface{}
+		want    int64
+		wantErr bool
+	}{
+		{"nil", nil, 0, true},
+		{"int", 7, 7, false},
+		{"int64", int64(99), 99, false},
+		{"string valid int", "42", 42, false},
+		// Fix3 fallback: "1.20" 原来报错，现在截断得 1
+		{"string float-like", "1.20", 1, false},
+		{"string invalid", "abc", 0, true},
+		{"[]byte valid int", []byte("123"), 123, false},
+		// Fix3 fallback: []byte "2.70" 截断得 2
+		{"[]byte float-like", []byte("2.70"), 2, false},
+		{"[]byte invalid", []byte("xyz"), 0, true},
+		{"float64 truncate", float64(5.9), 5, false},
+		{"float32 truncate", float32(3.1), 3, false},
+		{"unknown type", struct{}{}, 0, true},
+	}
+
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			e := newErr()
+			got := ObjToInt64(c.input, e)
+			if got != c.want {
+				t.Errorf("value: got %d, want %d", got, c.want)
+			}
+			if hasErr(e) != c.wantErr {
+				t.Errorf("error: got hasErr=%v, wantErr=%v (err=%v)", hasErr(e), c.wantErr, e.GetError())
+			}
+		})
+	}
+}
+
+// ─────────────────────────────────────────────
+// ObjToInt
+// ─────────────────────────────────────────────
+func TestObjToInt(t *testing.T) {
+	v := ObjToInt(10)
+	if v != 10 {
+		t.Errorf("got %d, want 10", v)
+	}
+}
+
+// ─────────────────────────────────────────────
+// ObjToBool
+// ─────────────────────────────────────────────
+func TestObjToBool(t *testing.T) {
+	t.Run("nil returns false with error", func(t *testing.T) {
+		e := newErr()
+		v := ObjToBool(nil, e)
+		if v || !hasErr(e) {
+			t.Errorf("nil: got %v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("bool true", func(t *testing.T) {
+		e := newErr()
+		v := ObjToBool(true, e)
+		if !v || hasErr(e) {
+			t.Errorf("bool true: got %v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("bool false", func(t *testing.T) {
+		e := newErr()
+		v := ObjToBool(false, e)
+		if v || hasErr(e) {
+			t.Errorf("bool false: got %v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("int 1 -> true, no error (bug fix)", func(t *testing.T) {
+		e := newErr()
+		v := ObjToBool(1, e)
+		if !v || hasErr(e) {
+			t.Errorf("int 1: got v=%v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("int 0 -> false, no error", func(t *testing.T) {
+		e := newErr()
+		v := ObjToBool(0, e)
+		if v || hasErr(e) {
+			t.Errorf("int 0: got v=%v err=%v", v, e.GetError())
+		}
+	})
+
+	t.Run("unknown type returns false with error", func(t *testing.T) {
+		e := newErr()
+		v := ObjToBool(struct{}{}, e)
+		if v || !hasErr(e) {
+			t.Errorf("struct: got v=%v err=%v", v, e.GetError())
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// ObjToStr
+// ─────────────────────────────────────────────
+func TestObjToStr(t *testing.T) {
+	cases := []struct {
+		name  string
+		input interface{}
+		want  string
+	}{
+		{"nil", nil, ""},
+		{"int", 42, "42"},
+		{"uint8", uint8(65), "65"},
+		{"int64", int64(1234567890), "1234567890"},
+		{"[]byte", []byte("hello"), "hello"},
+		{"string", "world", "world"},
+		{"float64", float64(3.14), "3.14"},
+		{"float32", float32(2.5), "2.5"},
+		{"bool true", true, "true"},
+		{"bool false", false, "false"},
+	}
+
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			got := ObjToStr(c.input)
+			if got != c.want {
+				t.Errorf("got %q, want %q", got, c.want)
+			}
+		})
+	}
+
+	t.Run("default (struct) marshals to JSON", func(t *testing.T) {
+		type S struct{ X int }
+		got := ObjToStr(S{X: 1})
+		if got == "" {
+			t.Error("struct: expected non-empty JSON string")
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// StrToMap
+// ─────────────────────────────────────────────
+func TestStrToMap(t *testing.T) {
+	t.Run("valid JSON", func(t *testing.T) {
+		v := StrToMap(`{"k":"v"}`)
+		if v["k"] != "v" {
+			t.Errorf("StrToMap: %v", v)
+		}
+	})
+
+	t.Run("invalid JSON returns empty map", func(t *testing.T) {
+		v := StrToMap(`not json`)
+		if v == nil {
+			t.Error("StrToMap invalid: expected empty map, got nil")
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// StrToSlice
+// ─────────────────────────────────────────────
+func TestStrToSlice(t *testing.T) {
+	v := StrToSlice(`[1,2,3]`)
+	if len(v) != 3 {
+		t.Errorf("StrToSlice: expected 3 elements, got %d", len(v))
+	}
+}
+
+// ─────────────────────────────────────────────
+// StrArrayToJsonStr
+// ─────────────────────────────────────────────
+func TestStrArrayToJsonStr(t *testing.T) {
+	cases := []struct {
+		name  string
+		input string
+		want  string
+	}{
+		{"empty returns []", "", "[]"},
+		{"short (<=2) returns []", "a", "[]"},
+		{"no commas", `"a","b"`, `["a","b"]`},
+		{"leading comma stripped", `,"a","b"`, `["a","b"]`},
+		{"trailing comma stripped", `"a","b",`, `["a","b"]`},
+		{"both commas stripped", `,"a","b",`, `["a","b"]`},
+	}
+
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			got := StrArrayToJsonStr(c.input)
+			if got != c.want {
+				t.Errorf("got %q, want %q", got, c.want)
+			}
+		})
+	}
+}
+
+// ─────────────────────────────────────────────
+// JsonStrToStrArray
+// ─────────────────────────────────────────────
+func TestJsonStrToStrArray(t *testing.T) {
+	t.Run("non-empty strips brackets", func(t *testing.T) {
+		got := JsonStrToStrArray(`["a","b"]`)
+		if got != `,"a","b",` {
+			t.Errorf("got %q", got)
+		}
+	})
+
+	t.Run("empty string", func(t *testing.T) {
+		got := JsonStrToStrArray("")
+		if got != ",," {
+			t.Errorf("got %q", got)
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// StrToInt
+// ─────────────────────────────────────────────
+func TestStrToInt(t *testing.T) {
+	t.Run("valid", func(t *testing.T) {
+		v, err := StrToInt("123")
+		if v != 123 || err != nil {
+			t.Errorf("got %d %v", v, err)
+		}
+	})
+
+	t.Run("invalid", func(t *testing.T) {
+		_, err := StrToInt("abc")
+		if err == nil {
+			t.Error("expected error")
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// JsonToObj
+// ─────────────────────────────────────────────
+func TestJsonToObj(t *testing.T) {
+	t.Run("integer preserved as int64", func(t *testing.T) {
+		v, err := JsonToObj(`{"id":2}`)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		m, ok := v.(map[string]interface{})
+		if !ok {
+			t.Fatalf("expected map, got %T", v)
+		}
+		if m["id"] != int64(2) {
+			t.Errorf("got %v (type %T), want int64(2)", m["id"], m["id"])
+		}
+	})
+
+	t.Run("decimal preserved as float64 with correct precision", func(t *testing.T) {
+		v, err := JsonToObj(`{"price":1.20}`)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		m := v.(map[string]interface{})
+		price, ok := m["price"].(float64)
+		if !ok {
+			t.Fatalf("expected float64, got %T", m["price"])
+		}
+		if price != 1.2 {
+			t.Errorf("got %v, want 1.2", price)
+		}
+	})
+
+	t.Run("large integer preserved as int64", func(t *testing.T) {
+		v, err := JsonToObj(`{"num":9999999}`)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		m := v.(map[string]interface{})
+		if m["num"] != int64(9999999) {
+			t.Errorf("got %v (type %T), want int64(9999999)", m["num"], m["num"])
+		}
+	})
+
+	t.Run("array with mixed types", func(t *testing.T) {
+		v, err := JsonToObj(`[1, 2.5, "hello", true]`)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		arr := v.([]interface{})
+		if len(arr) != 4 {
+			t.Fatalf("expected 4 elements, got %d", len(arr))
+		}
+		if arr[0] != int64(1) {
+			t.Errorf("arr[0]: got %v (%T), want int64(1)", arr[0], arr[0])
+		}
+		if arr[1] != float64(2.5) {
+			t.Errorf("arr[1]: got %v (%T), want float64(2.5)", arr[1], arr[1])
+		}
+		if arr[2] != "hello" {
+			t.Errorf("arr[2]: got %v, want hello", arr[2])
+		}
+		if arr[3] != true {
+			t.Errorf("arr[3]: got %v, want true", arr[3])
+		}
+	})
+
+	t.Run("nested object integers preserved", func(t *testing.T) {
+		v, err := JsonToObj(`{"order":{"id":5,"num":3,"price":1.20}}`)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		m := v.(map[string]interface{})
+		order := m["order"].(map[string]interface{})
+		if order["id"] != int64(5) {
+			t.Errorf("nested id: got %v (%T), want int64(5)", order["id"], order["id"])
+		}
+		if order["num"] != int64(3) {
+			t.Errorf("nested num: got %v (%T), want int64(3)", order["num"], order["num"])
+		}
+		if order["price"] != float64(1.2) {
+			t.Errorf("nested price: got %v, want 1.2", order["price"])
+		}
+	})
+
+	t.Run("invalid JSON returns error", func(t *testing.T) {
+		_, err := JsonToObj(`not json`)
+		if err == nil {
+			t.Error("expected error for invalid JSON")
+		}
+	})
+
+	t.Run("empty object", func(t *testing.T) {
+		v, err := JsonToObj(`{}`)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		m, ok := v.(map[string]interface{})
+		if !ok || len(m) != 0 {
+			t.Errorf("expected empty map, got %v", v)
+		}
+	})
+
+	t.Run("null value", func(t *testing.T) {
+		v, err := JsonToObj(`{"x":null}`)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		m := v.(map[string]interface{})
+		if m["x"] != nil {
+			t.Errorf("expected nil, got %v", m["x"])
+		}
+	})
+
+	t.Run("zero integer", func(t *testing.T) {
+		v, err := JsonToObj(`{"count":0}`)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		m := v.(map[string]interface{})
+		if m["count"] != int64(0) {
+			t.Errorf("got %v (%T), want int64(0)", m["count"], m["count"])
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// ObjToMap 数字类型保留（新行为）
+// ─────────────────────────────────────────────
+func TestObjToMapNumberPreservation(t *testing.T) {
+	t.Run("JSON integer -> int64", func(t *testing.T) {
+		v := ObjToMap(`{"id":2,"num":0}`)
+		if v["id"] != int64(2) {
+			t.Errorf("id: got %v (%T), want int64(2)", v["id"], v["id"])
+		}
+		if v["num"] != int64(0) {
+			t.Errorf("num: got %v (%T), want int64(0)", v["num"], v["num"])
+		}
+	})
+
+	t.Run("JSON decimal -> float64", func(t *testing.T) {
+		v := ObjToMap(`{"price":1.20,"rate":0.5}`)
+		if v["price"] != float64(1.2) {
+			t.Errorf("price: got %v (%T), want float64(1.2)", v["price"], v["price"])
+		}
+		if v["rate"] != float64(0.5) {
+			t.Errorf("rate: got %v (%T), want float64(0.5)", v["rate"], v["rate"])
+		}
+	})
+
+	t.Run("struct with int field -> int64", func(t *testing.T) {
+		type S struct {
+			Count int    `json:"count"`
+			Name  string `json:"name"`
+		}
+		v := ObjToMap(S{Count: 3, Name: "test"})
+		if v == nil {
+			t.Fatal("got nil")
+		}
+		if v["count"] != int64(3) {
+			t.Errorf("count: got %v (%T), want int64(3)", v["count"], v["count"])
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// ObjToSlice 数字类型保留（新行为）
+// ─────────────────────────────────────────────
+func TestObjToSliceNumberPreservation(t *testing.T) {
+	t.Run("JSON integer array -> int64 elements", func(t *testing.T) {
+		v := ObjToSlice(`[1, 2, 3]`)
+		if len(v) != 3 {
+			t.Fatalf("expected 3, got %d", len(v))
+		}
+		if v[0] != int64(1) {
+			t.Errorf("v[0]: got %v (%T), want int64(1)", v[0], v[0])
+		}
+	})
+
+	t.Run("JSON mixed array - integer and float", func(t *testing.T) {
+		v := ObjToSlice(`[2, 1.5, "hello"]`)
+		if v[0] != int64(2) {
+			t.Errorf("v[0]: got %v (%T), want int64(2)", v[0], v[0])
+		}
+		if v[1] != float64(1.5) {
+			t.Errorf("v[1]: got %v (%T), want float64(1.5)", v[1], v[1])
+		}
+	})
+}
+
+// ─────────────────────────────────────────────
+// Map.JsonToMap 数字类型保留（新行为）
+// ─────────────────────────────────────────────
+func TestMapJsonToMapNumberPreservation(t *testing.T) {
+	t.Run("integer -> int64", func(t *testing.T) {
+		m := Map{}
+		m.JsonToMap(`{"id":5,"count":0}`)
+		if m["id"] != int64(5) {
+			t.Errorf("id: got %v (%T), want int64(5)", m["id"], m["id"])
+		}
+		if m["count"] != int64(0) {
+			t.Errorf("count: got %v (%T), want int64(0)", m["count"], m["count"])
+		}
+	})
+
+	t.Run("decimal -> float64", func(t *testing.T) {
+		m := Map{}
+		m.JsonToMap(`{"price":1.20}`)
+		if m["price"] != float64(1.2) {
+			t.Errorf("price: got %v (%T), want float64(1.2)", m["price"], m["price"])
+		}
+	})
+
+	t.Run("StrToMap integer -> int64", func(t *testing.T) {
+		m := StrToMap(`{"total":100,"amount":1.50}`)
+		if m["total"] != int64(100) {
+			t.Errorf("total: got %v (%T), want int64(100)", m["total"], m["total"])
+		}
+		if m["amount"] != float64(1.5) {
+			t.Errorf("amount: got %v (%T), want float64(1.5)", m["amount"], m["amount"])
+		}
+	})
+
+	t.Run("invalid JSON sets error", func(t *testing.T) {
+		e := newErr()
+		m := Map{}
+		m.JsonToMap(`not json`, e)
+		if !hasErr(e) {
+			t.Error("expected error for invalid JSON")
+		}
+	})
+}

common/slice.go

@@ -63,6 +63,11 @@ func (that Slice) GetFloat64(key int, err ...*Error) float64 {
 	return v
 }
 
+// GetRoundFloat64 获取四舍五入到 precision 位小数的 float64
+func (that Slice) GetRoundFloat64(key int, precision int, err ...*Error) float64 {
+	return ObjToRoundFloat64((that)[key], precision, err...)
+}
+
 func (that Slice) GetSlice(key int, err ...*Error) Slice {
 	v := ObjToSlice((that)[key], err...)
 	return v