ashx一般处理程序接收ajax传回的json字符串，并写入到数据库

首先将json对象转为json字符串

var aToStr = JSON.stringify(graphicStr); //json转字符串

然后ajax 通过post请求

$.ajax({

type: 'post',

url: 'saveG.ashx',

data: aToStr,

dataType:'text ',

success: function () { alert('成功了！'); },

});

在ashx.cs文件中

using System;

using System.Collections;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

using System.Xml;

using System.IO;

using System.Data.SqlClient;//必须引入

using System.Collections.Generic;

using System.Text;

namespace WebApplication1

{

public partial class saveG : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

//接收字符串

string strJSON = string.Empty;

using (StreamReader reader = new StreamReader(Context.Request.InputStream))

{

strJSON = reader.ReadToEnd();

}

Context.Response.Write(strJSON);

//连接字符串

string myconn = "Server=数据库地址;Database=数据库名称;User ID='用户名';Password='密码'";

//建立数据库连接。

SqlConnection myconnection = new SqlConnection(myconn);

//打开数据库连接

myconnection.Open();

string sql = "SELECT * FROM [zhouhaitest].[dbo].[test]";

SqlCommand cmd = new SqlCommand(sql, myconnection) ;

//写入数据库

cmd.CommandText = "INSERT into [zhouhaitest].[dbo].[test] values (newid(),@GRAPHIC)"; //需要执行的sql语句

cmd.Parameters.Add("@GRAPHIC ", SqlDbType.Text).Value = strJSON;

cmd.CommandType = CommandType.Text;

cmd.Connection = myconnection;

try

{

cmd.ExecuteNonQuery();

Response.Write("</br>写入成功");

}

catch (Exception ex)

{

Response.Write("写入失败");

}

finally

{

myconnection.Close();

}

}

}

}