服务器端cs文件

服务器端向mysql数据库写数据

using System;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Data.OleDb;
using System.Drawing;
using System.Data;
using MySQLDriverCS;
using System.Web.Script.Serialization;

namespace GLSXJSON2.Controllers
{
    public class AdviseInsertController : Controller
    {

        public string Index(string text)  //这里的text是从service文件中获取的参数
        {
            MySQLConnection conn = null;
            conn = new MySQLConnection(new MySQLConnectionString("localhost", "glsx", "root", "ecust2016", ).AsString);
            conn.Open();     //这几句为建立一个MySQL的连接conn

            //sql语句写成string形式
            string str0 = string.Format("select MAX(Id) from fag order by Id desc");

            int id;
            MySQLCommand cmd0 = new MySQLCommand(str0, conn);        //建立MySQL执行命令cmd0 参数为str0和conn
            if(cmd0.ExecuteScalar()!=null&&!Convert.IsDBNull(cmd0.ExecuteScalar())){//执行查询操作，ExecuteScalar()返回查询结果第一行
                id=int.Parse(cmd0.ExecuteScalar().ToString())+;      //这是不为空情况把id+1
            }
            else
                id=;      //若为空id置0

            //sql语句写成string形式
            string str = string.Format("insert into fag(Id,content) values({0},'{1}')", id, text);

            try
            {
                MySQLCommand cmd = new MySQLCommand(str, conn);     //建立MySQL执行命令cmd 参数为str和conn
                cmd.ExecuteNonQuery();  //返回执行的条数
                return "";      //执行成功返回1
            }
            catch
            {
                return "-1";         //失败返回-1
            }

        }

    }
}

服务器端从mysql数据库读数据

 using System;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web;
 using System.Web.Mvc;
 using System.Data.OleDb;
 using System.Drawing;
 using System.Data;
 using MySQLDriverCS;
 using System.Web.Script.Serialization;

 namespace GLSXJSON2.Controllers
 {
     public class OrderController : Controller
     {

         public JArray Index(string value,string id)
         {
             MySQLConnection conn = null;
             conn = new MySQLConnection(new MySQLConnectionString("localhost", "glsx", "root", "ecust2016", ).AsString);
             conn.Open();
             //sql语句写成string形式
             string str = string.Format("select placetime,price,cloth11,cloth12,cloth13,cloth14,cloth21,cloth22,cloth23 from `order` where status='{0}' and customer='{1}'", int.Parse(value),int.Parse(id));

             //用conn连接数据库然后执行sql语句生成datatable
             MySQLDataAdapter sda = new MySQLDataAdapter(str, conn);
             DataTable dt = new DataTable();
             sda.Fill(dt);//填充数据到dt

             //创建一个用以序列化的对象
             JavaScriptSerializer jss = new JavaScriptSerializer();
             //从datatable中逐列获取值到数组
              System.Collections.ArrayList dic = new System.Collections.ArrayList();
              foreach (DataRow dr in dt.Rows)
              {
                  System.Collections.Generic.Dictionary<string, object> drow = new System.Collections.Generic.Dictionary<string, object>();
                  foreach (DataColumn dc in dt.Columns)
                  {
                      drow.Add(dc.ColumnName, dr[dc.ColumnName]);
                  }
                  dic.Add(drow);
              }
             conn.Close();

             //将获取到的数列序列化以后转化为string然后再转化为JArray
             return JArray.Parse(jss.Serialize(dic));
         }

     }
 }