在线播放音乐系统?

MPList.aspx
<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="playlist" runat="server" AutoGenerateColumns="False" OnSelectedIndexChanged="playlist_SelectedIndexChanged">
            <Columns>
                <asp:BoundField DataField="m_id" HeaderText="编号" />
                <asp:BoundField DataField="m_name" HeaderText="名称" />
                <asp:BoundField DataField="m_cname" HeaderText="创作者" />
                <asp:BoundField DataField="m_ycname" HeaderText="演唱者" />
                <asp:CommandField SelectText="播放" ShowSelectButton="True" />
            </Columns>
        </asp:GridView>

    </div>
    </form>
</body>
MPList.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;public partial class 在线播放音乐_MPList : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["mp34play"].ConnectionString);
            con.Open();
            SqlDataAdapter da = new SqlDataAdapter("select * from mp34", con);
            DataSet ds = new DataSet();
            da.Fill(ds);
            this.playlist.DataSource = ds;
            this.playlist.DataBind();
            con.Close();
        }
    }
    protected void playlist_SelectedIndexChanged(object sender, EventArgs e)
    {
        string aa = this.playlist.SelectedRow.Cells[0].Text.ToString();
        Response.Redirect("Play.aspx?m_id='" + aa + "'");
    }
}Play.aspx
<body>
    <form id="form1" runat="server">
    <div>
        <table width= "759 "border= "0 " align= "center ">
        <tr>
            <td   align= "center ">
            <object classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95" id="MediaPlayer2" width=400 height=400 >
            <asp:Label ID="Label1" runat="server" />
            
            <param   name= "UIMode"value="none"/>
            <param   name= "AutoStart"value="1"/>
            <param   name= "Enabled"value="true"/>
            <param   name= "ShowControls"value="-1"/>
            <param   name= "ShowGotoBar"value="0"/>
            <param   name= "ShowStatusBar"value="-1"/>
            <param   name= "EnableFullScreenControls "value= "1"/>
            <param   name= "EnablePositionControls"value= "1"/>
            <param   name= "Volume"value="100"/>
            <param   name= "DisplaySize"value= "0"/>
            <param   name= "SendErrorEvents"value= "0"/>
            <param   name= "enableContextMenu"value= "0"/>
            <param   name= "EnableStretchToFit"value= "1"/>
            <param   name= "EnableTracker"value= "1"/>
            </object>
                </td>
        </tr>
        </table>
    </div>
    </form>
</body>
Play.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;public partial class 在线播放音乐_Play : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            string id = Request["m_id"].ToString();
            SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["mp34play"].ConnectionString);
            con.Open();
            SqlCommand cmd = new SqlCommand("select m_name from mp34 where m_id='" + id + "'", con);
            SqlDataReader dr = cmd.ExecuteReader();
            if (dr.Read())
            {
                string name = dr["m_name"].ToString();
                string url = "music/" + name;
                Label1.Text = "<param name='Filename' value='" + url + "'>";
            }
        }
        catch
        {
            Response.Redirect("MPList.aspx");
        }
    }
}

看这么代码就知道了        <asp:GridView ID="playlist" runat="server" AutoGenerateColumns="False" OnSelectedIndexChanged="playlist_SelectedIndexChanged">
            <Columns>
                <asp:BoundField DataField="m_id" HeaderText="编号" />
                <asp:BoundField DataField="m_name" HeaderText="名称" />
                <asp:BoundField DataField="m_cname" HeaderText="创作者" />
                <asp:BoundField DataField="m_ycname" HeaderText="演唱者" />
                <asp:CommandField SelectText="播放" ShowSelectButton="True" />
            </Columns>
        </asp:GridView>
那书只是教如你如何绑定数据，顺便找了个音乐例子而己，并不能播放的，它只是个教你如何绑定数据显示而己实际上，你要播放音乐，还要有一个播放器。你可以百度一个MP3播放器。你需要在网页上加入一个播放器，并填上相关MP3地址，就可以播放了

播放器在Play.aspx页面上.<object classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95" id="MediaPlayer2" width=400 height=400 >
播放的是本地文件夹的音乐,.
加上这句后 
会报错编译器错误信息: CS0103: 当前上下文中不存在名称“url”去掉后,try里面的不会执行.

只要你点击的那个事件中，给mediaPlay控件的url赋上正确的url链接或你本地路径下的音乐的全称（路径+音乐名称.后缀名称），就可以播放了！

param name="Filename" value="<% =url %>">改成
param name="Filename" value='<% =url %>'>改成单引号如果还提示没url，可以数据库字段没有url这个字段，或者，你在查询时，在SQL语句中，更改了url名称

这个Url是你Play.aspx.cs中的参数

string name = dr["m_name"].ToString();
string url = "music/" + name;
name有音乐文件的后缀名吗？

有的,现在的关键问题是
编译器错误信息: CS0103: 当前上下文中不存在名称“url”

前台不变改成这样using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;public partial class 在线播放音乐_Play : System.Web.UI.Page
{
    protected string url=null;//在这里声明一个变量
    protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            string id = Request["m_id"].ToString();
            SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["mp34play"].ConnectionString);
            con.Open();
            SqlCommand cmd = new SqlCommand("select m_name from mp34 where m_id='" + id + "'", con);
            SqlDataReader dr = cmd.ExecuteReader();
            if (dr.Read())
            {
                string name = dr["m_name"].ToString();
                url = "music/" + name;//这里直接用就行了
                Label1.Text = "<param name='Filename' value='" + url + "'>";
            }
        }
        catch
        {
            Response.Redirect("MPList.aspx");
        }
    }
}
前台直接<%=url%>就能读取到

CS0103: 当前上下文中不存在名称“url”
没有声明url变量啊也可以用jquery 插件去播放啊

这个问题解决了可是还是不播放,或者说是,直接catch 又跳回来了...

用jplayer
例子：
<link href="skin/cssreset.css" rel="stylesheet" type="text/css" />
<link href="skin/default/css/default.css" rel="stylesheet" type="text/css" />

<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript" src="js/jquery.jplayer.js"></script>
<script type="text/javascript" src="js/jquery.mousewheel.js"></script>
<script type="text/javascript" src="js/common.js"></script>
<script type="text/javascript" language="javascript">
function gechi(musicname)
{

           $.ajax({
             type:"post",//提交方式
             url:"ajaxval.aspx",         //提交地址
             data: "name="+musicname,//提交的数据
             success:function(msg){//根据返回状态，给出相关提示
               if (msg!=null) {
                   $("#<%=Label1.ClientID%>").html(msg); }
//                else
//                $("#<%=Label1.ClientID%>").text("获取不到歌词");}
//                  $("#Label1").val="获取不到歌词";
                    }
           });
}
</script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<div>
<div style="float:left; width:263px; text-align:center; height:410px;overflow:scroll" >
<div style="width:240px; text-align:center">
    <asp:Label ID="Label1" runat="server" Text="歌词"></asp:Label>
</div>
</div>
<div id="container" style="float:right; margin-top:3px; margin-bottom:3px" >
<div id="jquery_jplayer"></div>
<div id="player_title">
<h1>音乐盒</h1>
</div>
<div id="playlist_list">
<div class="playlist_main">
<div class="playlist_wrap" >
<div class="playlist_cc">
<ul class="playlist_content" >
                    <asp:Repeater ID="Repeater1" runat="server">
                    <ItemTemplate>

                    <li onclick='gechi("<%# Eval("musicname")%>")' class="player" jplayer='<%# Eval("musicpath") %>' songer="许慧欣" ablum="幸福的糖" songimg="skin/default/images/songer/1.jpg">
<a href="#" class="controllink" ></a>
<p ><%# Eval("musicname")%></p>
</li>
</ItemTemplate>
                    </asp:Repeater>

</ul>
</div>
</div>
</div>
<div class="playlist_footer_content">
<ul class="playlist_footer">
<li class="list_play_zhi"><a href="#">直接播放</a></li>
<li class="list_up_one"><a href="#">上一首</a></li>
<li class="list_up" style="display:none;"><a href="#">上翻</a></li>
<li class="list_down" style="display:none;"><a href="#">下翻</a></li>
<li class="list_down_one"><a href="#">下一首</a></li>
<li class="list_ramdom"><a href="#">随便听听</a></li>
</ul>
</div>
</div>
</div>
    <br />
    </div>
</asp:Content>

调试易

在线播放音乐系统?

解决方案 »