请问在web api中如何实现post方式的查询？

Question

   public IHttpActionResult GetTcUserNew  (string uid, string PassWord, string callback = "")
        {


            string sql = "select uid,uname,ustate from tc_user_new where uid='" + uid + "' and pwdcompare('" + PassWord + "',upass,0)=1";
            DataTable Data = PublicFunction.GetStudyData(sql);

            //查询表达式的写法
            //IEnumerable<TcUserNew>
            var TcUserNew =
               from dt1 in Data.AsEnumerable() select new TcUserNew { uid = Convert.ToDecimal(dt1["uid"]), uname = dt1["uname"].ToString(), ustate = Convert.ToInt16(dt1["ustate"]) };
            if (TcUserNew == null)
                return NotFound();
            else
                return Ok(TcUserNew);
        }

请问是不是加一个[HttpPost] 就可以了？
不过我使用安卓的xutil访问不成功 

Answer 1

在前面加上[HttpPost]就可以了，但是参数必须是一个，而且只能是class. 例如你的

class UserPara

{

    public string uid {get;set;}

    public string PassWord{get;set;}

    public string callback {get;set;}

}

然后

[HttpPost]

public IHttpActionResult GetTcUserNew  (UserPara para)

下面是我的代码， 在测试工程里测试没有问题:

   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);
        }

        
        [HttpPost]
        public IHttpActionResult GetProduct(ProductSearchParameters para)
        {
            var product = products.FirstOrDefault((p) => p.Name.Contains(para.Name));
            if (product == null)
            {
                return NotFound();
            }
            return Ok(product);
        }

    }

    public class ProductSearchParameters
    {
        public string Name { get; set; }
    }

我使用的Advanced REST client测试的。给url http://localhost:62848/api/products 发送post action，Post的body是 name=mmer， 结果如下

Answer 2

Hi,

默认的WebApi范例:

[Authorize]

    public class ValuesController : ApiController

    {

        // GET api/values

        public IEnumerable<string> Get()

        {

            return new string[] { "value1", "value2" };

        }

        // GET api/values/5

        public string Get(int id)

        {

            return "value";

        }

       // POST api/values

        public void Post([FromBody]string value)

        {

        }

        [HttpPost]

        public HttpResponseMessage Post([FromBody] Test test)

        {

            // Save Code will be here

            return new HttpResponseMessage(HttpStatusCode.OK);

        }

        // PUT api/values/5

        public void Put(int id, [FromBody]string value)

        {

        }

        // DELETE api/values/5

        public void Delete(int id)

        {

       }

    }

你可以试着把参数拼成一串string，然后在webapi中拆解出来。

例如：

[HttpPost]

[Authorize]

public string GetStockList([FromBody]string jsonString)

{

    JObject jObject = JObject.Parse(jsonString);

    page = Convert.ToInt32(jObject["page"].ToString());

    pageSize = Convert.ToInt32(jObject["pageSize"].ToString());    

}

另外，安卓调用的话，你可以参考下面的链接：

Android调用WebAPI之传参、文件

Regards,

Moonlight

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