MVC控件器动作 返回类型 IActionResult

 1 using Microsoft.AspNetCore.Mvc;
 2 using System.Diagnostics;
 3 using System.Text;
 4 using TestMvcWebApplication.Models;
 5 
 6 namespace TestMvcWebApplication.Controllers
 7 {
 8     public class HomeController : Controller
 9     {
10         private readonly ILogger<HomeController> _logger;
11 
12         public HomeController(ILogger<HomeController> logger)
13         {
14             _logger = logger;
15         }
16 
17         public IActionResult Index()
18         {
19             Student student = new Student();
20             student.Id = 1;
21             student.Name = "Test";
22             List<Student> students = new List<Student>();
23             students.Add(student);
24             student = new Student { Id = 2, Name = "张三" };
25             students.Add(student);
26             return View(students);
27         }
28 
29         public IActionResult Privacy()
30         {
31             return View();
32         }
33         public IActionResult Test()
34         {//重定向
35             return RedirectToAction("Index");
36         }
37         public IActionResult ShowJson()
38         {//返回Json数据,中文不进行编码
39             List<Student> list = new List<Student>
40             {
41                 new Student { Id=1,Name="张三" },
42                 new Student { Id=2,Name="李四"},
43                 new Student { Id=3,Name="王五"},
44             };
45             return Ok(list);
46         }
47         public IActionResult ShowJson2()
48         {//返回Json数据,中文已编码
49             List<Student> list = new List<Student>
50             {
51                 new Student { Id=1,Name="张三" },
52                 new Student { Id=2,Name="李四"},
53                 new Student { Id=3,Name="王五"},
54             };
55             return Json(list);
56         }
57         public IActionResult Down()
58         {//下载文件
59             using MemoryStream ms = new MemoryStream();
60             string content = "深圳欢迎您！";
61             ms.Write(Encoding.UTF8.GetBytes(content));
62             return File(ms.ToArray(), "application/octet-stream", "hello.txt");
63         }
64         public IActionResult Content()
65         {//返回文本
66             return Content("返回文本");
67         }
68 
69         [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
70         public IActionResult Error()
71         {
72             return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
73         }
74     }
75     public class Student
76     {
77         public int Id { get; set; }
78         public string Name { get; set; }
79     }
80 }