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to_int.go

@@ -0,0 +1,40 @@
+package convx
+
+import (
+	"errors"
+	"strconv"
+)
+
+// interface 转 int
+func ToInt(val interface{}) (i int, err error) {
+
+	if v, ok := val.(string); ok {
+		// 不支持小数转换
+		i, err = strconv.Atoi(v)
+	} else if v, ok := val.(float32); ok {
+		i = int(v)
+	} else if v, ok := val.(float64); ok {
+		i = int(v)
+	} else if v, ok := val.(int); ok {
+		i = v
+	} else if v, ok := val.(int32); ok {
+		i = int(v)
+	} else if v, ok := val.(int64); ok {
+		i = int(v)
+	} else if v, ok := val.(uint); ok {
+		i = int(v)
+	} else if v, ok := val.(uint32); ok {
+		i = int(v)
+	} else if v, ok := val.(uint64); ok {
+		i = int(v)
+	} else if v, ok := val.(bool); ok {
+		if v {
+			i = 1
+		} else {
+			i = 0
+		}
+	} else {
+		return 0, errors.New("类型转换失败")
+	}
+	return
+}