Question

我有以下XML

<Workflow Name="Workflow1">
<Parameter Name="Parameter1">Value1</Parameter>
<Parameter Name="Parameter2">Value2</Parameter>
<Environment Name="Environment1" Type="Typ1">     
  <DataCenter Name="DC1" DeployEnvironmentName="blah"/>
</Environment>
<Environment Name="Environment2" Type="Typ2">     
  <DataCenter Name="DC2" DeployEnvironmentName="blah"/>
</Environment>

我正在尝试将此XML读入以下对象

class Workflow
{
    public string Name { get; set; }
    public IEnumerable<Parameter> Parameters { get; set; }
public IEnumerable<Environment> Environments { get; set; }
}

class Environment
{
    public string Name { get; set; }
    public EnvironmentType Type { get; set; }
    public IEnumerable<DataCenter> DataCenters { get; set; }        
}

class Parameter
{
    public string Name { get; set; }
    public string Value { get; set; }
}

class DataCenter
{
public string Name { get; set; }
    public string DeployEnvironmentName { get; set; }
}

使用以下表达式

var root = XElement.Load（filePath）;

    var workflows =
        root.Elements("Workflow")
            .Select(
                e =>
                new Workflow
                {
                    Name = e.Attribute("Name").Value,
                    Parameters = e.Elements("Parameter")
                         .Select(p => 
                         new Parameter { Name = p.Attribute("Name").Value, Value = p.Value }),
        Environments = e.Elements("Environment").Select(
                                   p =>
                                   new Environment
                                   {
                                       Name = p.Attribute("Name").Value,
                                       Type = (EnvironmentType)Enum.Parse(typeof
                                       (EnvironmentType), p.Attribute("Type").Value, true),
                                       DataCenters = p.Elements("DataCenter").Select(
                   dc => new DataCenter { 
                                              Name = dc.Attribute("Name").Value,                                      DeployEnvironmentName = dc.Attribute         
                                              ("DeployEnvironmentName").Value                                      })
                                    });
                });

我一直收到语法错误。出于某种原因，它似乎并不喜欢这些嵌套表达式。任何人都知道可能出现的问题或知道更好的方法吗？提前致谢

Answer 1

你需要删除这个分号

              Name = p.Attribute("Name").Value,
              Type = (EnvironmentType)Enum.Parse(typeof
             (EnvironmentType), p.Attribute("Type").Value, true),
              DataCenters = p.Elements("DataCenter").Select(
               dc => new DataCenter { 
                                      Name = dc.Attribute("Name").Value,                                      DeployEnvironmentName = dc.Attribute         
                                     ("DeployEnvironmentName").Value                                      })
                                });
                                 ^^^
            });

您不应在object initializers中使用分号，应使用逗号分隔属性。

Answer 2

您的XML文件似乎已被破坏。 Workflow标记从未关闭过。

尝试使用XElement和LINQ将XML加载到类对象中

2 个答案: