版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/tianchao7c/article/details/83580918
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using demo2.Models;
using MySql.Data.MySqlClient;
using Newtonsoft.Json;
namespace demo2.Controllers
{
public class GetFilesController : Controller
{
// GET: GetFiles
[HttpGet]
public void GetFiles(GetFiles Parameter)
{
string sn = Parameter.Sn_code;
string t = DateTime.Now.ToString("yyyyMMdd");
string name = Parameter.File_name;
MySqlConnection sqlCnn = new MySqlConnection();
string connetStr = "Server = 127.0.0.1; Port = 3306; Database = Database; Uid = root; Pwd = root;SslMode = none;";
MySqlConnection conn = new MySqlConnection(connetStr);
//string sql1 = string.Format("select * from device_files where sn_code='{0}' order by file_time,fid DESC limit 0,1", sn);
//string sql1 = string.Format("select * from device_files where sn_code='{0}' and file_time='{1}'", sn, t); //查询当前日期包含的数据
string sql1 = string.Format("select * from device_files where sn_code='{0}' and file_name like '%{1}%'", sn, name); //模糊查询文件名
MySqlCommand cmd = new MySqlCommand(sql1, conn);
try
{
conn.Open();
//执行查询，并将结果返回给读取器
MySqlDataReader reader = cmd.ExecuteReader();
List<GetFiles> proList = new List<GetFiles>();
while (reader.Read())
{
proList.Add(new GetFiles
{
Fid = reader.GetString(reader.GetOrdinal("fid")),
Sn_code = reader.GetString(reader.GetOrdinal("sn_code")),
File_src = reader.GetString(reader.GetOrdinal("file_src")),
File_time = reader.GetString(reader.GetOrdinal("file_time")),
File_name = reader.GetString(reader.GetOrdinal("file_name"))
});
}
var obj = new
{
Sn_code = reader.GetString(reader.GetOrdinal("sn_code")),
data = proList,
message = true,
state = 200
};
Formatting microsoftDataFormatSettings = default(Formatting);
string result = JsonConvert.SerializeObject(obj, microsoftDataFormatSettings);
Response.Write(result);
}
catch (MySqlException ex)
{
Response.Write(ex);
}
finally
{
conn.Close();
Console.WriteLine("关闭数据库");
}
}
}
}
查询结果生成json格式返回到微信小程序里
