数据类型转换 @param val 需要转换的字符串 @param rule 需要转换的类型，如"int" @return 返回转化后的数据类型 @return 返回错误
(val, rule string)
| 354 | //@return 返回转化后的数据类型 |
| 355 | //@return 返回错误 |
| 356 | func execConvert(val, rule string) (interface{}, error) { |
| 357 | rule = strings.ToLower(rule) |
| 358 | switch rule { |
| 359 | case "int", "int32", "int8", "int64": |
| 360 | bit, _ := strconv.Atoi(strings.TrimPrefix(rule, "int")) |
| 361 | if bit == 0 { |
| 362 | bit = 32 |
| 363 | } |
| 364 | num, err := strconv.ParseInt(val, 10, 64) |
| 365 | switch bit { |
| 366 | case 8: |
| 367 | return int8(num), err |
| 368 | case 32: |
| 369 | return int(num), err |
| 370 | default: |
| 371 | return num, err |
| 372 | } |
| 373 | //转化成浮点型 |
| 374 | case "float", "float32", "float64": |
| 375 | bit := 32 |
| 376 | if bit, _ := strconv.Atoi(strings.TrimPrefix(rule, "float")); bit == 0 { |
| 377 | bit = 32 |
| 378 | } |
| 379 | num, err := strconv.ParseFloat(val, 64) |
| 380 | if bit == 32 { |
| 381 | return float32(num), err |
| 382 | } |
| 383 | return num, err |
| 384 | } |
| 385 | return val, nil |
| 386 | } |