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[翻译]ASP.NET Web API 2入门

　　原文：Getting Started with ASP.NET Web API 2

 

　　Step 1：新建一个Empty的Web API Project。

　　Step 2：添加一个Model：

    public class Product
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Category { get; set; }
        public decimal Price { get; set; }
    }

　　Step 3：添加一个Empty的Web API Controller：

    public class ProductsController : ApiController
    {
        Product[] products = new Product[] 
        { 
            new Product { Id = 1, Name = "Tomato Soup", Category = "Groceries", Price = 1 }, 
            new Product { Id = 2, Name = "Yo-yo", Category = "Toys", Price = 3.75M }, 
            new Product { Id = 3, Name = "Hammer", Category = "Hardware", Price = 16.99M } 
        };

        public IEnumerable<Product> GetAllProducts()
        {
            return products;
        }

        public IHttpActionResult GetProduct(int id)
        {
            var product = products.FirstOrDefault((p) => p.Id == id);
            if (product == null)
            {
                return NotFound();
            }
            return Ok(product);
        }
    }

　　至此我们已经完成一个Web API。新建一个HTML Page调用此Web API：

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>Product App</title>
</head>
<body>

    <div>
        <h2>All Products</h2>
        <ul id="products" />
    </div>
    <div>
        <h2>Search by ID</h2>
        <input type="text" id="prodId" size="5" />
        <input type="button" value="Search" onclick="find();" />
        <p id="product" />
    </div>

    <script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-2.0.3.min.js"></script>
    <script>
        var uri = 'api/products';

        $(document).ready(function () {
            // Send an AJAX request
            $.getJSON(uri)
                .done(function (data) {
                    // On success, 'data' contains a list of products.
                    $.each(data, function (key, item) {
                        // Add a list item for the product.
                        $('<li>', { text: formatItem(item) }).appendTo($('#products'));
                    });
                });
        });

        function formatItem(item) {
            return item.Name + ': $' + item.Price;
        }

        function find() {
            var id = $('#prodId').val();
            $.getJSON(uri + '/' + id)
                .done(function (data) {
                    $('#product').text(formatItem(data));
                })
                .fail(function (jqXHR, textStatus, err) {
                    $('#product').text('Error: ' + err);
                });
        }
    </script>
</body>
</html>

　　查看效果：

 

posted on 2015-06-11 15:03  Walden1024  阅读(175)  评论(0)  编辑  收藏  举报