JQuery向ashx提交中文参数方案 [转]

转自：http://blog.csdn.net/wangqiuyun/article/details/8450964

字符编码这个东西，一旦和中文打上交道就不可避免出现乱码，今天项目用到了JQuery向ashx提交中文参数的这一块，折腾了一天，开始是各种乱码，最后中算弄好了。

客户端：

//异步获取数据
var tpAction=action+'getSearch.ashx?key='+encodeURIComponent('中国');
$.getJSON(tpAction,function(rsp){//请求成功
    if(rsp.status=='1'){
        var list=rsp.item;
        var len=list.length;
            if(len==0){
            //没有数据直接返回
                setNull();
            return;
            }
            //组装数据
            var s=zy_tmpl(templ,list,len);
            $list.append(s);
            }else{
                alert('','加载数据失败，请重试','确定');
            }

        },'json',function(err){//请求失败
            alert('','加载失败，请检查网络设置！','确定');
     },'POST','');

//异步获取数据
var tpAction=action+'getSearch.ashx?key='+encodeURIComponent('中国');        					
$.getJSON(tpAction,function(rsp){//请求成功        						
	if(rsp.status=='1'){
		var list=rsp.item;
		var len=list.length;						
        	if(len==0){
			//没有数据直接返回             						
        		setNull();
			return;
        	}						
        	//组装数据			        	
        	var s=zy_tmpl(templ,list,len);        						
        	$list.append(s);
        	}else{
        		alert('','加载数据失败，请重试','确定');					
        	}
        					
        },'json',function(err){//请求失败
        	alert('','加载失败，请检查网络设置！','确定');        					
     },'POST','');

服务器端：

string keyy = context.Request["key"];

if (keyy != null)
{

    string key = HttpUtility.UrlDecode(context.Request["key"].ToString());
    //string key = context.Server.HtmlDecode(context.Request.Params["key"].ToString());
    string log = "getSearch.ashx?key=" + key;
    string logsql = "insert into logs(createtime,contents) values('" + DateTime.Now.ToString() + "','" + log + "')";
    Sqlbase.ExecuteNonQuery(CommandType.Text, logsql, null);

    //more
    string sql = "select * from news where title like '%" + key + "%' order by id desc";
    DataTable dt = Sqlbase.ExecuteTable(CommandType.Text, sql, null);
    result rs = new result();
    rs.status = 1;
    rs.msg = "成功";
    rs.item = dt;
    string strJson = Newtonsoft.Json.JsonConvert.SerializeObject(rs);

    context.Response.Clear();
    context.Response.ContentEncoding = Encoding.UTF8;
    context.Response.ContentType = "application/json";
    context.Response.Write(strJson);
    context.Response.Flush();
    context.Response.End();
}

        string keyy = context.Request["key"];

        if (keyy != null)
        {

            string key = HttpUtility.UrlDecode(context.Request["key"].ToString());
            //string key = context.Server.HtmlDecode(context.Request.Params["key"].ToString());
            string log = "getSearch.ashx?key=" + key;
            string logsql = "insert into logs(createtime,contents) values('" + DateTime.Now.ToString() + "','" + log + "')";
            Sqlbase.ExecuteNonQuery(CommandType.Text, logsql, null);
            
            //more
            string sql = "select * from news where title like '%" + key + "%' order by id desc";
            DataTable dt = Sqlbase.ExecuteTable(CommandType.Text, sql, null);
            result rs = new result();
            rs.status = 1;
            rs.msg = "成功";
            rs.item = dt;
            string strJson = Newtonsoft.Json.JsonConvert.SerializeObject(rs);

            context.Response.Clear();
            context.Response.ContentEncoding = Encoding.UTF8;
            context.Response.ContentType = "application/json";
            context.Response.Write(strJson);
            context.Response.Flush();
            context.Response.End();
        }

这里根本就没有进行什么编码设置，其实就是JS用encodeURIComponent()对中文字符串编码，C#用HttpUtility.UrlDecode(context.Request["key"].ToString())进行解码，是不是很简单呢！可是我一天的实践证明：JS端用encodeURIComponent()要比escape()好多了，至于区别大家可以google一下，C#的解码函数也一堆，像什么Server.UrlDecode之类的，但是推荐使用HttpUtility.UrlDecode()，好处大家同样也可以google！