神奇的AutoMapper

AutoMapper3.3.1自动转换string to DateTime时候报错:

AutoMapper.AutoMapperMappingExceptionMissing type map configuration or unsupported mapping.
Mapping types:  
    String -> DateTime
    System.String -> System.DateTime
Destination path:
    Bar.Zing
Source value:
    Friday, December 26, 2014

而且这个在开发环境是没问题的,在生成环境才报错,从怀疑数据库到怀疑发布文件覆盖问题,最后查阅日志才发现是AutoMapper的问题。

Google后发现可能是平台问题(问题来源),开发环境各种.net framework的版本,生产环境.net 4.0,最后解决方案见链接:

https://stackoverflow.com/questions/4911108/how-to-map-a-string-to-a-date-in-automapper/4915449#comment5475563_4915449

Converter

public class StringToDateTimeConverter: ITypeConverter<string, DateTime>
{
    public DateTime Convert(ResolutionContext context)
    {
        object objDateTime = context.SourceValue;
        DateTime dateTime;

        if (objDateTime == null)
        {
            return default(DateTime);
        }

        if (DateTime.TryParse(objDateTime.ToString(), out dateTime))
        {
            return dateTime;
        }

        return default(DateTime);
    }
}
//配置
CreateMap<string, DateTime>().ConvertUsing<StringToDateTimeConverter>();

 

posted @ 2017-11-01 16:06  kenchen20050821  阅读(279)  评论(0编辑  收藏  举报