【发布时间】:2018-06-07 06:56:30
【问题描述】:
我正在尝试制作一个 .NET Core Web API,但我找不到解决问题的方法。
完全错误是
[ERR] 迭代上下文类型“MailAlertWebApiWithEF.Data.AlertContext”的查询结果时,数据库中发生异常。 ""System.ArgumentException: 初始化字符串的格式不符合从索引 0 开始的规范。
我从现有数据库中获取配置代码
Scaffold-DbContext "server=.;ConnectionString" Microsoft.EntityFrameworkCore.SqlServer -OutputDir DBModels -force -v
我的配置是:
public class AlertModelConfiguration<T>:BaseEntityModelConfiguration<T,int> where T:Alert
{
public AlertModelConfiguration(ref ModelBuilder modelBuilder):base(ref modelBuilder)
{
modelBuilder.Entity<Alert>(entity =>
{
//entity.HasKey(e => e.AlertId);
entity.Property(e => e.CreateDate).HasColumnType("datetime");
entity.Property(e => e.DeleteDate).HasColumnType("datetime");
entity.Property(e => e.Detail)
.IsRequired()
.HasMaxLength(2046)
.IsUnicode(false);
entity.Property(e => e.ErrorDetail)
.IsRequired()
.HasMaxLength(255)
.IsUnicode(false);
entity.Property(e => e.Title)
.HasMaxLength(50)
.IsUnicode(false);
entity.Property(e => e.UpdateDate).HasColumnType("datetime");
});
}
}
我的上下文是:
public class AlertContext:DbContext
{
public AlertContext(DbContextOptions<AlertContext> options)
: base(options)
{
}
public virtual DbSet<Alert> Users { get; set; }
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
new AlertModelConfiguration<Alert>(ref modelBuilder);
base.OnModelCreating(modelBuilder);
}
}
我在 appsettings.json 中的 ConnectionStrings:
ConnectionStrings": {
"AlertContext": "server=.;database=*****;poling=false;Connect
Timeout=60;Integrated Security=SSPI"
当我在调试模式下启动时,API 卡在引擎层中。
我的引擎和 IEngine:
Task<CustomListEntity<Alert>> GetByIdAsync(int id);
public Task<CustomListEntity<Alert>> GetByIdAsync(int id)
{
return CommonOperationAsync(async () =>
{
var predicate = PredicateBuilder.True<Alert>();
predicate = predicate.And(p => p.Id == id);
return new CustomListEntity<Alert>()
{
EntityList = await _alertReqository.GetAll(skip: 0, take: 10, predicate: predicate,
orderExpression: null, rowCount: out var count, ascending: false).ToListAsync(),
Count = count,
};
}, new BusinessBaseRequest()
{
MethodBase = MethodBase.GetCurrentMethod()
}, BusinessUtilMethod.CheckRecordIsExist, GetType().Name);
}
我尝试了自己的配置文件,但结果是一样的。怎么了?
【问题讨论】:
标签: c# asp.net-web-api .net-core