c#连接Java后台,处理返回的数据
首先定义共通文件,根据url连接Java后台
class ConntectUtil
{
public JObject ConsoleApplication(string appID, CustomDataType.HttpMethod method, string strJson)
{
String strResponse = "";
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new Uri(url + appID));
//POST或PUT
switch (method)
{
case Method.POST:
//设置参数
var jsonParse = JObject.Parse(strJson);
String jsonParam = "strJson=" + jsonParse.ToString();
byte[] buff = System.Text.Encoding.UTF8.GetBytes(jsonParam);
//设置请求信息
request.Method = CustomDataType.HttpMethod.POST.ToString();
request.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";
request.ContentLength = buff.Length;
Stream stream = request.GetRequestStream();
stream.Write(buff, 0, buff.Length);
stream.Dispose();
WebResponse response = request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
strResponse = reader.ReadToEnd();//利用StreamReader就可以从响应内容从头读到尾
stream.Close();
response.Close();
break;
case Method.GET:
WebResponse myResponse = request.GetResponse();
StreamReader myReader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
strResponse = myReader.ReadToEnd();//利用StreamReader就可以从响应内容从头读到尾
myReader.Close();
myResponse.Close();
break;
}
return (JObject)JsonConvert.DeserializeObject(strResponse);
}
}
带参数的请求后台获取数据。
ConntectUtil conntectUtil = new ConntectUtil();
//设置参数
Temp temp = new Temp();
temp.Id = 1;
//格式化成JSON格式
String strJson = JsonConvert.SerializeObject(temp);
//获取返回数据
JObject retJson = commonUtil.ConsoleApplication(ConfigurationManager.AppSettings["url"], CustomDataType.HttpMethod.POST, strJson);
//(第二种写法)JObject retJson = commonUtil.ConsoleApplication(url, POST, strJson);
在请求后台功能中,常常需要对返回的数据进行处理后赋值,本文将讲解两种赋值方法:
首先,获取返回的JSON数据
//获取数据
string jsonData = JsonConvert.SerializeObject(retJson.GetValue("data"));
1.直接给DataGridView绑定数据
//禁止根据返回数据自动生成列
this.DataGridView.AutoGenerateColumns = false;
//绑定数据源
this.DataGridView.DataSource = retJson.GetValue("data");
2.转成list后做遍历处理
//转化为list
JavaScriptSerializer Serializer = new JavaScriptSerializer();
List<Temp1> objs = Serializer.Deserialize<List<Temp1>>(jsonData);