java C#中请求HTTP接口api的方法

大家好，我是雄雄，欢迎关注微信公众号：雄雄的小课堂

前言

现在是：2023年2月15日22:14:30

搞代码的陈戌源都知道，哦，不好意思，是程序员，那个陈戌源好像是个“清官”…我们都知道，在java中调用api接口很简单，网上也有好多封装好的依赖，我们在项目中直接添加依赖，通过方法直接调用即可。 调用接口离不开传参，传参离不开json数据处理，java中也有线程的fastjson，想怎么用怎么用，但是在C#中调用接口确不大一样，今天我们就来看看在C#中如何调用api接口以及json数据的处理。

apipost中的接口

首先我们来看一下接口是啥样的。

该接口就是一个正常的post接口，请求的地址为：

http://127.0.0.1:8055/DaenWxHook/client/

请求时我们需要传入一个json数据的参数，如下：

{

"type": "Q0000",

"data": {

}

}

请求返回的json数据如下所示：

{

"code": 200,

"msg": "正常",

"result": {

"startTimeStamp": "16762e14307",

"startTime": "2023年2月12日23时5分7秒",

"runTime": "1天9时33分13秒",

"recv": 1859,

"send": 15,

"wxNum": "muxiongxiosnssg701xxxx",

"nick": "X[emoji=05F5]\b",

"wxid": "wxid_2sxs8edsw2glcgw522"

},

"wxid": "xxxxx",

"port": 8055,

"pid": 22820,

"flag": "",

"timestamp": "1676335100119"

}

C#中调用接口

新建一个工具类，这个工具类中就是专门负责请求接口的，包含post和get方式，源代码如下：

using System;

using System.IO;

using System.Net;

using System.Text;

namespace Common

{

public class Http

{

#region IIS服务地址

public String HostUrl = "http://127.0.0.1:8055";//本地测试

//public String HostUrl = "http://192.168.10.109:64111";//真实环境

#endregion

#region HttpPost提交

public string HttpPost(string apiUrl, string postDataStr)

{

try

{

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(HostUrl + "/" + apiUrl);

request.Method = "POST";

request.ContentType = "application/json";

Stream requestStream = request.GetRequestStream();

StreamWriter myStreamWriter = new StreamWriter(requestStream, Encoding.GetEncoding("utf-8"));

myStreamWriter.Write(postDataStr);

myStreamWriter.Flush();

HttpWebResponse response = (HttpWebResponse)request.GetResponse();

if (response.StatusCode == HttpStatusCode.OK)

{

Stream myResponseStream = response.GetResponseStream();

StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));

string retString = myStreamReader.ReadToEnd();

myStreamReader.Close();

myResponseStream.Close();

return retString;

}

throw new Exception(response.StatusCode.ToString());

}

catch (Exception e)

{

Console.WriteLine("有异常了!");

//Common.Logs.SaveLog("C:\\AlphaErrLog", "HTTP" + apiUrl, "HTTP[" + apiUrl + "]==Message:" + e.Message + "StackTrace:" + e.StackTrace);

return "";

}

}

#endregion

#region HttpGet请求

public string HttpGet(string Url)

{

string retString = "";

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);

request.Method = "GET";

try

{

HttpWebResponse response = (HttpWebResponse)request.GetResponse();

Stream myResponseStream = response.GetResponseStream();

//获取内容

using (StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8")))

{

myStreamReader.ReadToEnd();

myStreamReader.Close();

myResponseStream.Close();

}

return retString;

}

catch (Exception)

{

throw;

}

}

#endregion

#region HttpPostForXML

public string HttpPostForXML(string url, string postData)

{

string result = "";

HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);

req.Method = "POST";

req.ContentType = "application/xml";

req.Credentials = CredentialCache.DefaultCredentials; //防止出现403禁止访问

byte[] data = Encoding.UTF8.GetBytes(postData);

req.ContentLength = data.Length;

using (Stream reqStream = req.GetRequestStream())

{

reqStream.Write(data, 0, data.Length);

reqStream.Close();

}

HttpWebResponse resp = (HttpWebResponse)req.GetResponse();

Stream stream = resp.GetResponseStream();

using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))

{

result = reader.ReadToEnd();

return result;

}

}

#endregion

}

}

创建son格式化工具类JsonHelper

将对象序列化为JSON格式

///

/// 对象

/// json字符串

public static string SerializeObject(object o)

{

var serializerSettings = new JsonSerializerSettings

{

// 设置为驼峰命名

ContractResolver = new CamelCasePropertyNamesContractResolver()

};

string json = Newtonsoft.Json.JsonConvert.SerializeObject(o,Formatting.None,serializerSettings);

return json;

}

解析JSON字符串生成对象实体

///

/// 对象类型

/// json字符串(eg.{"ID":"112","Name":"石子儿"})

/// 对象实体

public static T DeserializeJsonToObject(string json) where T : class

{

Newtonsoft.Json.JsonSerializer serializer = new Newtonsoft.Json.JsonSerializer();

StringReader sr = new StringReader(json);

object o = serializer.Deserialize(new Newtonsoft.Json.JsonTextReader(sr), typeof(T));

T t = o as T;

return t;

}

解析JSON数组生成对象实体集合

///

/// 对象类型

/// json数组字符串(eg.[{"ID":"112","Name":"石子儿"}])

/// 对象实体集合

public static List DeserializeJsonToList(string json) where T : class

{

Newtonsoft.Json.JsonSerializer serializer = new Newtonsoft.Json.JsonSerializer();

StringReader sr = new StringReader(json);

object o = serializer.Deserialize(new Newtonsoft.Json.JsonTextReader(sr), typeof(List));

List list = o as List;

return list;

}

反序列化JSON到给定的匿名对象

///

/// 匿名对象类型

/// json字符串

/// 匿名对象

/// 匿名对象

public static T DeserializeAnonymousType(string json, T anonymousTypeObject)

{

T t = Newtonsoft.Json.JsonConvert.DeserializeAnonymousType(json, anonymousTypeObject);

return t;

}

从本地文件加载,转为一个对象Model

///

///

///

///

public static T FileLoad(string path)

{

try

{

StreamReader file = File.OpenText(path);

Newtonsoft.Json.JsonTextReader reader = new Newtonsoft.Json.JsonTextReader(file);

Newtonsoft.Json.JsonSerializer serializer = new Newtonsoft.Json.JsonSerializer();

object o = serializer.Deserialize(reader, typeof(T));

file.Close();

return (T)o;

}

catch (Exception)

{

return default(T);

}

}

public static T Copy(T val)

{

string s = JsonHelper.SerializeObject(val);

return Newtonsoft.Json.JsonConvert.DeserializeObject(s);

}

public static object DeserializeObject(string rawText, Type type)

{

return Newtonsoft.Json.JsonConvert.DeserializeObject(rawText, type);

}

从本地文件加载，转为ModelList

///

///

///

///

public static List FileLoadList(string path) where T : class

{

StreamReader file = File.OpenText(path);

Newtonsoft.Json.JsonTextReader reader = new Newtonsoft.Json.JsonTextReader(file);

Newtonsoft.Json.JsonSerializer serializer = new Newtonsoft.Json.JsonSerializer();

object o = serializer.Deserialize(reader, typeof(List));

file.Close();

List list = o as List;

return list;

}

接下来我们看看如何调用，因为传参需要传递一个json格式的数据，所以我先用字典集合存放起来，然后格式化成json数据，传上去。

private void Form1_Load(object sender, EventArgs e)

{

Dictionary dic = new Dictionary();

dic.Add("type", "Q0000");

string param = JsonHelper.SerializeObject(dic);

Console.WriteLine("参数是："+ param);

string result = http.HttpPost(path, param);

Console.WriteLine("请求结果是："+result);

}

data里面是空的也行，所以我就没有传。

好文推荐

 您阅读本篇文章共花了：