解决方法:
在Startup类的ConfigureServices()方法中进行配置,DefaultContractResolver() 原样输出,返回的 json 与后台定义一致
代码:
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc().AddJsonOptions(opt =>
{
opt.SerializerSettings.ContractResolver = new Newtonsoft.Json.Serialization.DefaultContractResolver();//json字符串原样输出
});
}