没时间解释了,快上车。
通过NuGet获取Zaabee.AspNetCoreProtobuf
Install-Package Zaabee.AspNetCoreProtobuf
在Startup.cs文件中修改ConfigureServices方法
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc(options => { options.AddProtobufSupport(); });
}
搞掂……这时候你就可以通过application/x-protobuf的content-type来让asp.net core使用protobuf来进行序列化/反序列化。
测试代码
在asp.net core项目中添加以下DTO
[ProtoContract]
public class TestDto
{
[ProtoMember(1)] public Guid Id { get; set; }
[ProtoMember(2)] public string Name { get; set; }
[ProtoMember(3)] public DateTime CreateTime { get; set; }
[ProtoMember(4)] public List<TestDto> Kids { get; set; }
[ProtoMember(5)] public long Tag { get; set; }
[ProtoMember(6)] public TestEnum Enum { get; set; }
}
public enum TestEnum
{
Apple,
Banana,
Pear
}
新建一个XUnit项目,通过Nuget引用Microsoft.AspNetCore.TestHost,建立一个测试类
public class AspNetCoreProtobufTest
{
private readonly TestServer _server;
private readonly HttpClient _client;
public AspNetCoreProtobufTest()
{
_server = new TestServer(
new WebHostBuilder()
.UseKestrel()
.UseStartup<Startup>());
_client = _server.CreateClient();
}
[Fact]
public void Test()
{
// HTTP Post with Protobuf Response Body
_client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/x-protobuf"));
var dtos = GetDtos();
var stream = new MemoryStream();
ProtoBuf.Serializer.Serialize(stream, dtos);
HttpContent httpContent = new StreamContent(stream);
// HTTP POST with Protobuf Request Body
var responseForPost = _client.PostAsync("api/Values", httpContent);
var result = ProtoBuf.Serializer.Deserialize<List<TestDto>>(
responseForPost.Result.Content.ReadAsStreamAsync().Result);
Assert.True(CompareDtos(dtos,result));
}
private static bool CompareDtos(List<TestDto> lstOne, List<TestDto> lstTwo)
{
lstOne = lstOne ?? new List<TestDto>();
lstTwo = lstTwo ?? new List<TestDto>();
if (lstOne.Count != lstTwo.Count) return false;
for (var i = 0; i < lstOne.Count; i++)
{
var dtoOne = lstOne[i];
var dtoTwo = lstTwo[i];
if (dtoOne.Id != dtoTwo.Id || dtoOne.CreateTime != dtoTwo.CreateTime || dtoOne.Enum != dtoTwo.Enum ||
dtoOne.Name != dtoTwo.Name || dtoOne.Tag != dtoTwo.Tag || !CompareDtos(dtoOne.Kids, dtoTwo.Kids))
return false;
}
return true;
}
private static List<TestDto> GetDtos()
{
return new List<TestDto>
{
new TestDto
{
Id = Guid.NewGuid(),
Tag = long.MaxValue,
CreateTime = DateTime.Now,
Name = "0",
Enum = TestEnum.Apple,
Kids = new List<TestDto>
{
new TestDto
{
Id = Guid.NewGuid(),
Tag = long.MaxValue - 1,
CreateTime = DateTime.Now,
Name = "00",
Enum = TestEnum.Banana
},
new TestDto
{
Id = Guid.NewGuid(),
Tag = long.MaxValue - 2,
CreateTime = DateTime.Now,
Name = "01",
Enum = TestEnum.Pear
}
}
},
new TestDto
{
Id = Guid.NewGuid(),
Tag = long.MaxValue - 3,
CreateTime = DateTime.Now,
Name = "1",
Enum = TestEnum.Apple,
Kids = new List<TestDto>
{
new TestDto
{
Id = Guid.NewGuid(),
Tag = long.MaxValue - 4,
CreateTime = DateTime.Now,
Name = "10",
https://i.cnblogs.com/EditCategories.aspx?catid=1 Enum = TestEnum.Banana
},
new TestDto
{
Id = Guid.NewGuid(),
Tag = long.MaxValue - 5,
CreateTime = DateTime.Now,
Name = "11",
Enum = TestEnum.Pear
}
}
}
};
}
}
为什么要用protobuf?
因为快……在我们这边使用业务数据的测试中,protobuf的序列化/反序列化性能大概是Json.net的三倍,序列化后的体积大概只有Json的二分之一,这可以在相当程度上提高webapi的吞吐性能。
protobuf的缺点
DTO层必须引用protobuf-net来添加特性,这在一定程度上导致了代码的侵入。基本上DTO属于POCO,依赖第三方包的话总觉得有点不贞洁……另外就是protobuf序列化后的数据不具有可视化,因此如果是使用消息队列或者请求监控的地方,就要综合考虑protobuf是否适合使用场景。
原理
asp.net core是基于中间件方式来实现,其自带默认的JsonFormater(基于Json.net),asp.net core会根据content type来选择对应的Formater来处理对象的序列化,当中包括InputFormatter(反序列化)和OutputFormatter(序列化)。因此除了protobuf,我们还可以添加或者替换其它的序列化方式,例如使用Jil来代替Json.net来提高Json性能。
以上实现以及Demo和测试的源代码已放到GitHub上。
最后给大家拜个晚年,祝大家新年快乐~