Question

我有一个我要序列化的课程

public class DesignEntity
{
    public string DesignName { get; set; }
    public string DesignID { get; set; }
    [ScriptIgnore]
    public string designDetails { get; set; }
}

属性designDetails已包含序列化数据，因此无需再次序列化

DesignEntity designSessionEntity = null;
JavaScriptSerializer jSerializer = null;
string designJsonSession = "null";

designSessionEntity = new DesignEntity();
jSerializer = new JavaScriptSerializer();

designSessionEntity = /* */ // Get Values via some method
designJsonSession = jSerializer.Serialize(designSessionEntity); 
// Now append designDetails to resultant string json

我想在序列化完成后将designDetails附加到designJsonSession。我怎样才能实现同样的目标？

Answer 1

首先，在DesignEntity课程中再添加一个字段。其类型是designDetails json序列化的契约类。

public class DesignEntity
{
    public string DesignName { get; set; }
    public string DesignID { get; set; }
    /// new field
    public DesignDetailsObject DesignDetails { get; set; }
    [ScriptIgnore]
    public string designDetails { get; set; }
}

然后，像往常一样获取对象，首先将json反序列化为新字段，然后序列化。

var designSessionEntity = new DesignEntity();
var jSerializer = new JavaScriptSerializer();

designSessionEntity = /// Get Values via some method

/// assign the design details with deserialized object
designSessionEntity.DesignDetails = jSerializer.Deserialize<DesignDetailsObject>(designSessionEntity.designDetails);

/// serialize it again
var designJsonSession = jSerializer.Serialize(designSessionEntity);

瞧！

<强>更新

如果您无法访问designDetails json序列化的类，那么您有两种选择。

尝试从json结构中推断出类，并自己创建DesignDetailsObject（推荐）。
手动附加json字符串（我将尝试向您展示如何使用） - 如果课程非常繁重，则必须应用此方法，并且不值得工作。

代码段对于选项2：

public string JsonAppender ( string targetJson, List<string> fields, object value )
{
    var insertIndex = 0;
    foreach ( var field in fields )
    {
        var _fieldDescriptor = field + "\":";
        insertIndex += targetJson.Substring(insertIndex).IndexOf(_fieldDescriptor) + _fieldDescriptor.Length;
    }

    var lengthOfDefaultVal = targetJson.Substring(insertIndex).IndexOf("\"") - 1;

    return targetJson.Substring(0, insertIndex) + "\"" + value + "\"" + targetJson.Substring(insertIndex + lengthOfDefaultVal);
}

用法：

var fieldAppendedJson = JsonAppender(json, new List<string> { "designDetails " }, designSessionEntity.designDetails);

将属性附加到c＃中的序列化json字符串

1 个答案: