我有两个盐,每个用户都有一个独特的盐,与数据库中的用户信息一起存储.第二种盐是网站特有的盐.两者都需要哈希密码.
问题是我不知道我应该在哪里保持我的网站盐.现在它驻留在运行散列算法的PHP方法中.我应该将它保存在/ var/www /之外的文件中并打开PHP并读取文件吗？我不想将它存储在数据库中,因为如果我的数据库受到损害,那将会破坏两种盐的目的.
有什么建议？
为可怕的标题道歉,我不太确定如何说出我的问题.
我有一个看起来像这样的对象:
CustAcct cust = new CustAcct();
cust.Name = "John Doe";
cust.Account = "ABC123";
cust.OrderTotal = 123.43
cust.OrderQty = 4;
cust.TransDate = "12/26/2010 13:00"
请不要花太多时间批评下一部分,因为这真的不涉及购物车/客户的东西,但想法是一样的,我只是想使用每个人都非常熟悉的东西.
一个帐户可以有多个客户,一个客户可以拥有多个帐户.
所以你有了:
List<CustAcct> custList = new List<CustAcct>();
custList.Add("John Doe", "ABC123", 123.43, 4, "12/26/2010 13:00");
custList.Add("John Doe", "ABC123", 32.12, 2, "12/27/2010 10:00");
custList.Add("John Doe", "ABC321", 43.34, 1, "12/28/2010 15:00");
custList.Add("John Doe", "ABC321", 54.60, 3, "12/28/2010 16:00");
custList.Add("Jane Zoe", "ABC123", 46.45, 2, "12/28/2010 17:00");
custList.Add("Jane Zoe", "ABC123", 32.65, 1, "12/29/2010 12:00");
custList.Add("Jane Zoe", "ABC321", 67.65, 3, "12/29/2010 …我正在做的是创建一个对象(A),其中包含对另一个对象(B)的引用.我的代码的UI部分将这些对象(A)保存在BindingList中,该BindingList用作DevExpress网格视图的数据源.控制器通过事件将新创建的对象(A)发送到UI.控制器还有一个更新引用对象(B)的线程.抛出的异常来自DevExpress GridView并读取"检测到跨线程操作.要抑制此异常,请设置DevExpress.Data.CurrencyDataController.DisableThreadingProblemsDetection = true".
现在我不想压制此异常,因为代码最终会在关键应用程序中结束.
那么如何在不引起问题的情况下跨线程更新引用对象呢？这是我的Test应用程序的代码.它在实际程序中基本相同.
更新 UI中的错误由Nicholas Butler的答案修复,但现在异常已移至Employee类.我已更新代码以反映更改.
这是我的代码
*UI*
public partial class Form1 : Form
{
private BindingList<IEmployee> empList;
EmployeeController controller;
private delegate void AddEmployeInvoke(IEmployee employee);
public Form1()
{
controller = new EmployeeController();
controller.onNewEmployee += new EmployeeController.NewEmployee(controller_onNewEmployee);
empList = new BindingList<IEmployee>();
InitializeComponent();
}
void controller_onNewEmployee(IEmployee emp)
{
AddEmployee(emp);
}
private void AddEmployee(IEmployee empl)
{
if (InvokeRequired)
{
this.Invoke(new AddEmployeInvoke(AddEmployee), new Object[] {empl});
}
else
{
empList.Add(empl);
}
}
private void Form1_Load(object sender, EventArgs e)
{
this.gridControl1.DataSource = …我正在尝试将ViewModel中的ObservableCollection数据绑定到View中的Devexpress 2D Stock Chart.我知道VM绑定了View的DataContext,因为我将窗口的Title绑定到VM中的属性,并且在运行程序时它是正确的.该集合被正确实例化,我可以看到所有对象都已创建,具有值,并被添加到集合中.
图表信息没有显示.该图表显示的不是应该绑定到它的信息.我猜它与我的XAML中的一行有关,但我只是不知道它是什么.
这是输出中的错误:
System.Windows.Data错误:40:BindingExpression路径错误:'对象'''ChartElementPanel'(Name ='')'上找不到'快照'属性.BindingExpression:路径= DataContext.Snapshots; DataItem ='ChartElementPanel'(Name =''); target元素是'StockSeries2D'(HashCode = 24500892); target属性是'DataSource'(类型'Object')
DevExpress版本是10.1.9
编辑:我想我知道问题出在哪里.StockSeries2D DataContext = DevExpress.Xpf.Charts.ChartElementPanel所以当我使用
DataSource="{Binding Path=DataContext.Snapshots}"
它确实指向DevExpress.Xpf.Charts.ChartElementPanel,因为它不包含Snapshots属性,所以会引发错误.
XAML:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="200" />
<RowDefinition Height="50" />
</Grid.RowDefinitions>
<dxc:ChartControl Name="chartControl1">
<dxc:ChartControl.Diagram>
<dxc:XYDiagram2D>
<dxc:XYDiagram2D.Series>
<dxc:StockSeries2D DataSource="{Binding DataContext.Snapshots}" HighValueDataMember="High" LowValueDataMember="Low" CloseValueDataMember="Last" ArgumentScaleType="DateTime" ArgumentDataMember="TimeStamp">
<dxc:StockSeries2D.PointOptions>
<dxc:PointOptions dxc:FinancialSeries2D.ValueToDisplay="HighValue" />
</dxc:StockSeries2D.PointOptions>
<dxc:StockSeries2D.Model>
<dxc:ArrowsStock2DModel />
</dxc:StockSeries2D.Model>
</dxc:StockSeries2D>
</dxc:XYDiagram2D.Series>
<!--Region #Axis X-->
<dxc:XYDiagram2D.AxisX>
<dxc:AxisX2D>
<dxc:AxisX2D.DateTimeOptions>
<dxc:DateTimeOptions Format="ShortTime" />
</dxc:AxisX2D.DateTimeOptions>
</dxc:AxisX2D>
</dxc:XYDiagram2D.AxisX>
<!-- End Rgion -->
<!-- region #AxisY -->
<dxc:XYDiagram2D.AxisY>
<dxc:AxisY2D> …有没有办法让 webpack 将输出注入 HTML 而不是单独的文件？
<html>
<head>
</head>
<body>
<script type="text/javascript">
// webpack puts the output here
</script>
</body>
</html>
我正在调试 .NET SurrealDB 库的一些测试。我可以很好地打开与数据库的连接，但是当我create向数据库（docker 容器）发送 RPC 消息时，它会返回一个错误，内容为“数据库出现问题：表不存在”
TRACE tungstenite::protocol Received message {"id":"02B70C1AFE5D","async":true,"method":"create","params":["users",{"username":"john","password":"test123"}]}
...
16 13:46:45] DEBUG surrealdb::dbs Executing: CREATE $what CONTENT $data RETURN AFTER
surreal_1 | [2022-09-16 13:46:45] TRACE surrealdb::dbs Iterating: CREATE $what CONTENT $data RETURN AFTER
code: -32000, message: "There was a problem with the database: The table does not exist"
知道为什么会发生这种情况吗？当然，该表不存在，因为我正在尝试创建它。Surreal代码中是否还有其他原因会返回这样的错误？
我已经尝试了一段时间来解决这个问题,但是我缺乏更高级的SQL技能让我筋疲力尽.
Executions(TradeDate, Symbol, Side, Price, Under, Account)
TEMP DATA:
2012-06-20, AAPL 120716C00600000, BUY, 3.25, AAPL, XYZ123
2012-06-20, AAPL 120716C00600000, SELL, 3.30, AAPL, XYZ123
2012-06-20, AAPL 120716C00600000, BUY, 3.25, AAPL, XYZ123
2012-06-20, AAPL 120716C00600000, SELL, 3.30, AAPL, XYZ123
2012-06-20, GRPN 120716C00027000, BUY, 2.25, GRPN, XYZ123
2012-06-20, GRPN 120716C00027000, SELL, 2.30, GRPN, XYZ123
2012-06-20, GRPN 120716C00027000, SELL, 2.30, GRPN, XYZ123
2012-06-20, GRPN 120716C00027000, BUY, 2.25, GRPN, XYZ123
-UNDER----Side(Buy)----Side(Sell)
AAPL 6.50 6.60
GRPN 4.50 4.60
正如你所看到的那样,我试图获得每一面价格的总和,然后按下.
我正在尝试使用.NET 4.5 HttpClient登录网站并接收cookie.我在离开试验之前就打破了,并检查了CookieContainer并且它不包含任何cookie.响应发回200状态.
private async void Login(string username, string password)
{
try
{
Uri address = new Uri(@"http://website.com/login.php");
CookieContainer cookieJar = new CookieContainer();
HttpClientHandler handler = new HttpClientHandler()
{
CookieContainer = cookieJar
};
handler.UseCookies = true;
handler.UseDefaultCredentials = false;
HttpClient client = new HttpClient(handler as HttpMessageHandler)
{
BaseAddress = address
};
HttpContent content = new StringContent(string.Format("username={0}&password={1}&login=Login&keeplogged=1", username, password));
HttpResponseMessage response = await client.PostAsync(client.BaseAddress, content);
}
我不知道为什么这不起作用.当我尝试.NET 4风格时它工作正常.
我无法弄清楚如何使用Cake中的XmlPoke来更改XML节点的内部文本值.我一直得到的错误是Error: Expression must evaluate to a node-set.
我的XML看起来像这样
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<WebPublishMethod>FileSystem</WebPublishMethod>
<LastUsedBuildConfiguration>Release</LastUsedBuildConfiguration>
<LastUsedPlatform>Any CPU</LastUsedPlatform>
<SiteUrlToLaunchAfterPublish />
<LaunchSiteAfterPublish>True</LaunchSiteAfterPublish>
<ExcludeApp_Data>False</ExcludeApp_Data>
<publishUrl>This value must be set to your local path</publishUrl>
<DeleteExistingFiles>False</DeleteExistingFiles>
</PropertyGroup>
</Project>
我build.cake看起来像这样
// Update the publish path in the pubxml
XmlPoke(publishProfile, "/Project/PropertyGroup/publishUrl/", buildPaths.PublishDirectory);
// The publishProfile is just the location of the XML file
// The buildPaths.PublishDirectory is the value I'm trying to set the inner text to
如何让您的对象保持线程安全,实现INotifyPropertyChanged？我不能使用SynchronizationContext,因为我需要能够序列化对象.
protected void OnPropertyChanged(string propertyName)
{
var handler = PropertyChanged;
if (handler != null)
// What can I add here to make it thread-safe?
handler(this, new PropertyChangedEventArgs(propertyName));
}