.Net整合Json实现REST服务客户端的方法详解
前言
本文主要给大家介绍了关于.Net整合Json实现REST服务客户端的相关内容，分享出来供大家参考学习，下面话不多说了，来一起看看详细的介绍吧。
一.准备工作
1.点击官网 或本地下载支持.Net4.0的Json插件Newtonsoft.Json
2.找到%压缩包%\Bin\net40\Newtonsoft.Json.dll，在工程中引用
二.相关代码介绍
1.HttpClientUtil.cs封装REST方法
usingNewtonsoft.Json;
usingSystem;
usingSystem.Collections.Generic;
usingSystem.IO;
usingSystem.Linq;
usingSystem.Net;
usingSystem.Text;
namespacepsi.Common
{
publicclassHttpClientUtil
{
//REST@GET方法，根据泛型自动转换成实体，支持List
publicstaticTdoGetMethodToObj(stringurl)
{
HttpWebRequestrequest=(HttpWebRequest)WebRequest.Create(url);
request.Method="get";
request.ContentType="application/json;charset=UTF-8";
HttpWebResponseresponse=null;
try
{
response=(HttpWebResponse)request.GetResponse();
}
catch(WebExceptione)
{
response=(HttpWebResponse)e.Response;
returndefault(T);
}
stringjson=getResponseString(response);
returnJsonConvert.DeserializeObject(json);
}
//将HttpWebResponse返回结果转换成string
privatestaticstringgetResponseString(HttpWebResponseresponse)
{
stringjson=null;
using(StreamReaderreader=newStreamReader(response.GetResponseStream(),System.Text.Encoding.GetEncoding("UTF-8")))
{
json=reader.ReadToEnd();
}
returnjson;
}
//获取异常信息
privatestaticstringgetRestErrorMessage(HttpWebResponseerrorResponse)
{
stringerrorhtml=getResponseString(errorResponse);
stringerrorkey="UnhandledException:";
errorhtml=errorhtml.Substring(errorhtml.IndexOf(errorkey)+errorkey.Length);
errorhtml=errorhtml.Substring(0,errorhtml.IndexOf("\n"));
returnerrorhtml;
}
//REST@POST方法
publicstaticTdoPostMethodToObj(stringurl,stringjsonBody)
{
HttpWebRequestrequest=(HttpWebRequest)WebRequest.Create(url);
request.Method="post";
request.ContentType="application/json;charset=UTF-8";
varstream=request.GetRequestStream();
using(varwriter=newStreamWriter(stream))
{
writer.Write(jsonBody);
writer.Flush();
}
HttpWebResponseresponse=(HttpWebResponse)request.GetResponse();
stringjson=getResponseString(response);
returnJsonConvert.DeserializeObject(json);
}
//REST@PUT方法
publicstaticstringdoPutMethod(stringurl)
{
HttpWebRequestrequest=(HttpWebRequest)WebRequest.Create(url);
request.Method="put";
request.ContentType="application/json;charset=UTF-8";
HttpWebResponseresponse=(HttpWebResponse)request.GetResponse();
using(StreamReaderreader=newStreamReader(response.GetResponseStream(),System.Text.Encoding.GetEncoding("UTF-8")))
{
returnreader.ReadToEnd();
}
}
//REST@PUT方法，带发送内容主体
publicstaticTdoPutMethodToObj(stringurl,stringjsonBody)
{
HttpWebRequestrequest=(HttpWebRequest)WebRequest.Create(url);
request.Method="put";
request.ContentType="application/json;charset=UTF-8";
request.Timeout=30*1000;
varstream=request.GetRequestStream();
using(varwriter=newStreamWriter(stream))
{
writer.Write(jsonBody);
writer.Flush();
}
HttpWebResponseresponse=(HttpWebResponse)request.GetResponse();
stringjson=getResponseString(response);
returnJsonConvert.DeserializeObject(json);
}
//REST@DELETE方法
publicstaticbooldoDeleteMethod(stringurl)
{
HttpWebRequestrequest=(HttpWebRequest)WebRequest.Create(url);
request.Method="delete";
request.ContentType="application/json;charset=UTF-8";
HttpWebResponseresponse=(HttpWebResponse)request.GetResponse();
using(StreamReaderreader=newStreamReader(response.GetResponseStream(),System.Text.Encoding.GetEncoding("UTF-8")))
{
stringresponseString=reader.ReadToEnd();
if(responseString.Equals("1"))
{
returntrue;
}
returnfalse;
}
}
}
}
2.调用REST服务端方法，以Json作为数据格式
//////取得升级服务端的url地址 /// ///privateStringgetServerUrl() { Stringresult=""; UpgraderClientupgraderClient=getUpgraderClient(); if(upgraderClient!=null) { result+="http://"+upgraderClient.serverIP+ ":"+upgraderClient.serverPort+ "/upgraderServer/service/upgrade.do"; } returnresult; } /// ///测试与升级服务端的连接 /// ///publicbooltestConnect() { FileRequestfileReq=newFileRequest(); fileReq.type=(int)RequestType.TEST_CONNECT; stringjsonData=JsonConvert.SerializeObject(fileReq); FileResponserep=null; try { rep=HttpClientUtil.doPostMethodToObj (getServerUrl(),jsonData); }catch { thrownewException("连接远程服务端失败！"); } returnrep.status==200; }
总结
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