DotNet 笔记

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C#接口调用类

/**
 *zfy 2012-01-23
 *RestClient
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.IO;
using System.Net;
using System.Text;
namespace LkTiKu.Util
{


    public enum HttpVerb
    {       
        GET,            //method  常用的就这几样,当然你也可以添加其他的   get:获取    post:修改    put:写入    delete:删除
        POST,
        PUT,
        DELETE
    }


    public class RestClient
    {
        public string EndPoint { get; set; }    //请求的url地址  eg:   http://215.23.12.45:8080/order/order_id=1&isdel=0
        public HttpVerb Method { get; set; }    //请求的方法
        public string ContentType { get; set; } //格式类型:我用的是application/json,具体使用什么,看需求
        public string PostData { get; set; }    //传送的数据

        public RestClient()
        {
            EndPoint = "";
            Method = HttpVerb.GET;
            ContentType = "text/xml";
            PostData = "";
        }
        public RestClient(string endpoint)
        {
            EndPoint = endpoint;
            Method = HttpVerb.GET;
            ContentType = "text/xml";
            PostData = "";
        }
        public RestClient(string endpoint, HttpVerb method)
        {
            EndPoint = endpoint;
            Method = method;
            ContentType = "text/xml";
            PostData = "";
        }

        public RestClient(string endpoint, HttpVerb method, string postData)
        {
            EndPoint = endpoint;
            Method = method;
            ContentType = "text/xml";
            PostData = postData;
        }


        public string MakeRequest()
        {
            return MakeRequest("");
        }

        public string MakeRequest(string parameters)
        {
            var request = (HttpWebRequest)WebRequest.Create(EndPoint + parameters);

            request.Method = Method.ToString();
            request.ContentLength = 0;
            request.ContentType = ContentType;

            if (!string.IsNullOrEmpty(PostData) && Method == HttpVerb.POST)//如果传送的数据不为空,并且方法是post
            {
                var encoding = new UTF8Encoding();
                var bytes = Encoding.GetEncoding("UTF-8").GetBytes(PostData);//编码方式按自己需求进行更改,我在项目中使用的是UTF-8
                request.ContentLength = bytes.Length;

                using (var writeStream = request.GetRequestStream())
                {
                    writeStream.Write(bytes, 0, bytes.Length);
                }
            }

            if (!string.IsNullOrEmpty(PostData) && Method == HttpVerb.PUT)//如果传送的数据不为空,并且方法是put
            {
                var encoding = new UTF8Encoding();
                var bytes = Encoding.GetEncoding("UTF-8").GetBytes(PostData);//编码方式按自己需求进行更改,我在项目中使用的是UTF-8
                request.ContentLength = bytes.Length;

                using (var writeStream = request.GetRequestStream())
                {
                    writeStream.Write(bytes, 0, bytes.Length);
                }
            }
            using (var response = (HttpWebResponse)request.GetResponse())
            {
                var responseValue = string.Empty;

                if (response.StatusCode != HttpStatusCode.OK)
                {
                    var message = String.Format("Request failed. Received HTTP {0}", response.StatusCode);
                    throw new ApplicationException(message);
                }

                // grab the response
                using (var responseStream = response.GetResponseStream())
                {
                    if (responseStream != null)
                        using (var reader = new StreamReader(responseStream))
                        {
                            responseValue = reader.ReadToEnd();
                        }
                }

                return responseValue;
            }
        }

    } // class


}

使用的方法1:

var client = new RestClient();
string endPoint = @"http:\\myRestService.com\api\";
var client = new RestClient(endPoint);
var json = client.MakeRequest();

使用的方法2:

var json = client.MakeRequest("?param=0");

使用的方法3:

var client = new RestClient();
client.EndPoint = @"http:\\myRestService.com\api\"; ;
client.ContentType = "application/json";
client.Method = HttpVerb.POST;
client.PostData = "{postData: value}";
var json = client.MakeRequest();

 

 

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