使用mongoDB c#驱动程序将对象序列化为字符串值(就像在其上调用ToString()一样)
本文关键字:调用 一样 ToString 驱动程序 mongoDB 对象 字符串 序列化 使用 | 更新日期: 2023-09-27 18:07:03
我使用MongoDB c#驱动程序。我有一个c#的数据结构
public class ResourceSpec
{
public string TypeName
{
get;
private set;
}
public HashSet<ResourceProperty> Properties
{
get;
private set;
}
}
public class ResourceProperty
{
public string Val
{
get;
private set;
}
}
我想把它序列化成:
{TypeName: 'blabla', Properties: ['value1', 'value2', 'value3' ]}
代替
{TypeName: 'blabla', Properties: [{Val: 'value1'}, {Val: ' value2'}, {Val: ' value3'}] }
我该怎么做呢?
您可以编写自定义序列化器并将其注册到驱动程序。有一点需要注意,一旦注册了序列化器,它将用于每个ResourceSpec
实例。
public class ResourceSpecSerializer : BsonBaseSerializer
{
public override object Deserialize(BsonReader bsonReader, Type nominalType, Type actualType, IBsonSerializationOptions options)
{
// Deserialize logic
}
public override void Serialize(BsonWriter bsonWriter, Type nominalType, object value, IBsonSerializationOptions options)
{
// Serialize logic
}
并使用BsonSerializer.RegisterSerializer
BsonSerializer.RegisterSerializer(typeof(ResourceSpec), new ResourceSpecSerializer());
对于实现自定义JSON,我建议查看Json.NET
,特别是JsonWriter
下面是一个使用JsonWriter
的例子:
StringBuilder sb = new StringBuilder();
StringWriter sw = new StringWriter(sb);
using(JsonWriter writer = new JsonTextWriter(sw))
{
writer.Formatting = Formatting.Indented;
writer.WriteStartObject();
writer.WritePropertyName("CPU");
writer.WriteValue("Intel");
writer.WritePropertyName("PSU");
writer.WriteValue("500W");
writer.WritePropertyName("Drives");
writer.WriteStartArray();
writer.WriteValue("DVD read/writer");
writer.WriteComment("(broken)");
writer.WriteValue("500 gigabyte hard drive");
writer.WriteValue("200 gigabype hard drive");
writer.WriteEnd();
writer.WriteEndObject();
}
将显示:
{
"CPU": "Intel",
"PSU": "500W",
"Drives": [
"DVD read/writer"
/*(broken)*/,
"500 gigabyte hard drive",
"200 gigabype hard drive"
]
}