使用C#调用webApi
井高峯
1、restClient类
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;
namespace Task10WebApi
{
public class RestClient
{
/// <summary>
/// 请求服务器地址
/// </summary>
private string BaseUri;
public RestClient(string baseUri)
{
this.BaseUri = baseUri;
}
#region Get请求
public string Get(string uri)
{
//先根据用户请求的uri构造请求地址
string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
//创建Web访问对 象
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
//通过Web访问对象获取响应内容
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
//通过响应内容流创建StreamReader对象，因为StreamReader更高级更快
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
//string returnXml = HttpUtility.UrlDecode(reader.ReadToEnd());//解决编码问题
string returnXml = reader.ReadToEnd();//利用StreamReader就可以从响应内容从头读到尾
reader.Close();
myResponse.Close();
return returnXml;
}
#endregion
#region Post请求
public string Post(string data, string uri)
{
//先根据用户请求的uri构造请求地址
string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
//创建Web访问对象
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
//数据转成“UTF-8”的字节流
byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(data);
myRequest.Method = "POST";
myRequest.ContentLength = buf.Length;
myRequest.ContentType = "application/json";
myRequest.MaximumAutomaticRedirections = 1;
myRequest.AllowAutoRedirect = true;
//发送请求
Stream stream = myRequest.GetRequestStream();
stream.Write(buf, 0, buf.Length);
stream.Close();
//获取接口返回值
//通过Web访问对象获取响应内容
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
//通过响应内容流创建StreamReader对象，因为StreamReader更高级更快
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
//string returnXml = HttpUtility.UrlDecode(reader.ReadToEnd());//解决编码问题
string returnXml = reader.ReadToEnd();//利用StreamReader就可以从响应内容从头读到尾
reader.Close();
myResponse.Close();
return returnXml;
}
#endregion
#region Put请求
public string Put(string data, string uri)
{
//先根据用户请求的uri构造请求地址
string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
//创建Web访问对象
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
//把用户传过来的数据转成“UTF-8”的字节流
byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(data);
myRequest.Method = "PUT";
myRequest.ContentLength = buf.Length;
myRequest.ContentType = "application/json";
myRequest.MaximumAutomaticRedirections = 1;
myRequest.AllowAutoRedirect = true;
//发送请求
Stream stream = myRequest.GetRequestStream();
stream.Write(buf, 0, buf.Length);
stream.Close();
//获取接口返回值
//通过Web访问对象获取响应内容
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
//通过响应内容流创建StreamReader对象，因为StreamReader更高级更快
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
//string returnXml = HttpUtility.UrlDecode(reader.ReadToEnd());//解决编码问题
string returnXml = reader.ReadToEnd();//利用StreamReader就可以从响应内容从头读到尾
reader.Close();
myResponse.Close();
return returnXml;
}
#endregion
#region Delete请求
public string Delete(string data, string uri)
{
//先根据用户请求的uri构造请求地址
string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
//创建Web访问对象
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
//把用户传过来的数据转成“UTF-8”的字节流
byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(data);
myRequest.Method = "DELETE";
myRequest.ContentLength = buf.Length;
myRequest.ContentType = "application/json";
myRequest.MaximumAutomaticRedirections = 1;
myRequest.AllowAutoRedirect = true;
//发送请求
Stream stream = myRequest.GetRequestStream();
stream.Write(buf, 0, buf.Length);
stream.Close();
//获取接口返回值
//通过Web访问对象获取响应内容
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
//通过响应内容流创建StreamReader对象，因为StreamReader更高级更快
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
//string returnXml = HttpUtility.UrlDecode(reader.ReadToEnd());//解决编码问题
string returnXml = reader.ReadToEnd();//利用StreamReader就可以从响应内容从头读到尾
reader.Close();
myResponse.Close();
return returnXml;
}
#endregion
}
}
2、调用示例
1）、webconfig配置
<appSettings>
<!--WebApi访问地址-->
<add key="ProjectFlowMangement10WebApi" value="http://localhost:1723" />
</appSettings>
3）、实例化RestClient类，传入webApi接口地址 参数，如下
public RestClient _ProjectFlowMangement10WebApi = new RestClient(ConfigurationManager.AppSettings["ProjectFlowMangement10WebApi"]);
4）、调用方法示例
public bool SaveProjectApprovalBusinessInfo(SaveWorkFlowDO _SaveWorkFlowDO)
{
SystemRunLogDTO systemRunLogDTO = new SystemRunLogDTO(ControllerName);
systemRunLogDTO.voidName = "SaveProjectApprovalInfo";
systemRunLogDTO.logDesc = "保存项目立项业务数据";
BillBaseDTO _bd = new BillBaseDTO();
JObject _jobj = null;
bool _result = false;
try
{
string jsonStr = JsonConvert.SerializeObject(_SaveWorkFlowDO);
_jobj = JsonConvert.DeserializeObject<JObject>(_ProjectFlowMangement10WebApi.Post(jsonStr, "api/CusSaveProjectFlow/SaveProjectApprovalInfo"));
if (_jobj != null && _jobj["resultStatus"].ToString() == "0")
{
_result = true;
_wl.WriteSuccessLog(systemRunLogDTO, string.Format("执行成功,flowId:{0}", _bd.BillWorkflowId));
}
else
{
_wl.WriteErrorLog(systemRunLogDTO, string.Format("执行失败,flowId:{0}", _bd.BillWorkflowId), 1);
}
}
catch (Exception ex)
{
_wl.WriteErrorLog(systemRunLogDTO, string.Format("执行失败,msg:{0}", ex.Message), 2);
}
return _result;
}
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