asp.net core 请求参数接收总结
String key1=Request.Query["key1"];//获取url字符串 String key2 = Request.Form["key2"];//获取表单 String key3 = Request.Cookies["key3"];//获取cookie String key4 = Request.Headers["key4"];//获取http头参数
注:在.net core 2.1中使用cookie需要设置options.CheckConsentNeeded = context => false;即:
services.Configure<CookiePolicyOptions>(options => { // This lambda determines whether user consent for non-essential cookies is needed for a given request. options.CheckConsentNeeded = context => false; //设置false可以打开cookie options.MinimumSameSitePolicy = SameSiteMode.None; });
在.net core中使用session,需要在Startup.cs文件进行中间件配置等操作,红色为需要添加的内容:
public void ConfigureServices(IServiceCollection services) { services.Configure<CookiePolicyOptions>(options => { // This lambda determines whether user consent for non-essential cookies is needed for a given request. options.CheckConsentNeeded = context => false; options.MinimumSameSitePolicy = SameSiteMode.None; }); services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1); services.AddDbContext<MyContext>(options => { options.EnableSensitiveDataLogging(true);//敏感数据记录,可以控制台生成的sql实际传的参数显示出来 options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection"), opts => { //默认情况下SqlServer限制在1000条,假设1500条批量操作会按2个批次来插入数据库,第一批次1000条,第二批次500条来进行处理 //opts.MaxBatchSize(100000);//设置批量操作一批次大小,比如AddRange批量添加一批次插入数据大小限制 //opts.CommandTimeout(72000);//设置超时20分钟 }); }); services.AddSession(); }
public void Configure(IApplicationBuilder app, IHostingEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } else { app.UseExceptionHandler("/Home/Error"); } app.UseStaticFiles(); app.UseCookiePolicy(); app.UseSession(); app.UseMvc(routes => { routes.MapRoute( name: "default", template: "{controller=Home}/{action=Index}/{id?}"); }); }
//设置session HttpContext.Session.SetString("sessionid", "123456789"); //设置cookie Response.Cookies.Append("key3", "heheda");
//获取session
String sessionid = HttpContext.Session.GetString("sessionid");
//HttpContext.Session.Remove("sessionid");//删除session
//获取cookie
String key3 = Request.Cookies["key3"];
数据绑定：
/// <summary>
/// 数据绑定
/// </summary>
public IActionResult SayHello1(String name,int age,string val)
{
//get请求: http://localhost:5000/Home/SayHello1?name=zhangsan&age=11&val=abc
//post请求:使用PostMan测试,Content-Type:application/x-www-form-urlencoded 表单请求可以获取
return Content("hello:"+name+",age:"+age+",val:"+val);
}
模型绑定:查询字符串或表单key的名称和类属性的名称保持一致就能映射上
//模型绑定:查询字符串或表单key的名称和类属性的名称保持一致就能映射上
public IActionResult SayHello2(TestModel model)
{
//get请求: http://localhost:5000/Home/SayHello1?name=zhangsan&age=11
//post请求:使用PostMan测试,Content-Type:application/x-www-form-urlencoded 表单请求可以获取
return Content("hello:" + model.Name + ",age:" + model.Age );
}
public class TestModel
{
public String Name { get; set; }
public int Age { get; set; }
}
//限制了只允许通过url字符串和http正文模型绑定参数
public IActionResult SayHello2([FromQuery][FromBody]TestModel model)
{
return Content("hello:" + model.Name + ",age:" + model.Age );
}
不是所有的数据都能自动绑定到方法参数上,比如Header就需要制定FromHeaderAttribute.这里测试Header提交的参数并不能进行模型绑定:
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>PostHeader</title>
</head>
<body>
<button onclick="postHeader()" >提交带Header数据</button>
</body>
</html>
<script src="~/lib/jquery/dist/jquery.js"></script>
<script>
function postHeader() {
$.ajax({
url: "/Home/PostHeader?r=" + Math.random(),
beforeSend: function(xhr) {
xhr.setRequestHeader("Name", 'zhangsan');
xhr.setRequestHeader("token", 'djshfdwehh234h3hdjhwhdu23');
},
data: {Name:'呵呵哒',age:12},
type: 'post',
success: function(data) {
alert(data);
}
});
}
</script>
后台接收:
/// <summary>
/// 不是所有的数据都能自动绑定到方法参数上,比如Header就需要制定FromHeaderAttribute.这里测试Header提交的参数并不能进行模型绑定
/// </summary>
[HttpPost]
public IActionResult PostHeader([FromHeader]String name,[FromHeader]String token,[FromForm]TestModel model)
{
return Content("hello " + name + ",Name2:"+model.Name+",age2:"+model.Age);
}
//返回Json
public IActionResult ReturnJson()
{
//JsonResult result = new JsonResult(new { username = "张三" });
//return result;
return Json(new { username = "张三" });
}
/// <summary>
/// 返回指定视图
/// </summary>
public IActionResult ShowView()
{
return View("~/Views/Home/MyTest.cshtml");
}
