ASP.NET Core 2.2 基础知识(十四) WebAPI Action返回类型(未完待续)

原文: ASP.NET Core 2.2 基础知识(十四) WebAPI Action返回类型(未完待续)

要啥自行车,直接看手表

复制代码//返回基元类型 public string Get() { return "hello world"; }

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//返回基元类型
public string Get()
{
return "hello world";
}

 

复制代码//返回复杂类型 public Person Get() { return new Person {Id = 1, Name = "refuge"}; }

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//返回复杂类型
public Person Get()
{
return new Person {Id = 1, Name = "refuge"};
}

 

复制代码//控制器需要继承 Controller 类 public IActionResult Get() { return Ok("hello world"); }

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//控制器需要继承
Controller 类
public IActionResult Get()
{
return Ok("hello world");
}

 

 

复制代码//控制器需要继承 Controller 类 public IActionResult Get() { return BadRequest("hello world"); }

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//控制器需要继承
Controller 类
public IActionResult Get()
{
return BadRequest("hello world");
}

 

 

复制代码//控制器需要继承 Controller 类 public IActionResult Get() { return NotFound("什么也没有"); }

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//控制器需要继承
Controller 类
public IActionResult Get()
{
return NotFound("什么也没有");
}

 

 

ASP.NET Core 默认返回 JSON 格式,但同时也提供了 XML 格式.

 

复制代码//方法一 services.AddMvc().AddXmlSerializerFormatters(); //方法二 //services.AddMvc(options => //{ // options.OutputFormatters.Add(new XmlSerializerOutputFormatter()); //}); //方法三 //services.AddMvc(options => //{ // options.OutputFormatters.Add(new XmlDataContractSerializerOutputFormatter()); //});

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//方法一

services.AddMvc().AddXmlSerializerFormatters();
//方法二
//services.AddMvc(options =>
//{
//
options.OutputFormatters.Add(new XmlSerializerOutputFormatter());
//});
//方法三
//services.AddMvc(options =>
//{
//
options.OutputFormatters.Add(new XmlDataContractSerializerOutputFormatter());
//});

 

官方说这样就可以了,但是不行!!!!!

测试:

复制代码public Person Get() { var person = new Person { Id = 1, Name = "refuge" }; return person; }

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public Person Get()
{
var person = new Person { Id = 1, Name = "refuge" };
return person;
}

图就不上了.

必须要打上 [Produces("application/cml")] 才行

复制代码[Produces("application/xml")] public Person Get() { var person = new Person { Id = 1, Name = "refuge" }; return person; }

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[Produces("application/xml")]
public Person Get()
{
var person = new Person { Id = 1, Name = "refuge" };
return person;
}

 

[Produces(...)] 特性可在 Action , Controller 或全局范围内应用.