初学者寻求帮助

        <script language="javascript">
           var i=0;
           function hetongSelect()
           {
               if(i==0)
               {
                   document.getElementById("indicator").style.display="block";
                   loginService.hetongSelect(callback);
                   i=1;
               }
               
           }
           function callback(data)
           {
               document.getElementById("indicator").style.display="none";
               DWRUtil.addOptions("hetong_id",data,"id","mingcheng");
           }
       
        </script><body leftmargin="2" topmargin="9" background='<%=path %>/images/allbg.gif'>
<form action="<%=path %>/tixing?type=tixingAdd" name="formAdd" method="post">
     <table width="98%" align="center" border="0" cellpadding="4" cellspacing="1" bgcolor="#CBD8AC" style="margin-bottom:8px">
<tr bgcolor="#EEF4EA">
        <td colspan="3" background="<%=path %>/images/wbg.gif" class='title'><span>合同收款提醒</span></td>
    </tr>
<tr align='center' bgcolor="#FFFFFF" onMouseMove="javascript:this.bgColor='red';" onMouseOut="javascript:this.bgColor='#FFFFFF';" height="22">
    <td width="25%" bgcolor="#FFFFFF" align="right">
                合同信息：<img id="indicator" src="<%=path %>/img/loading.gif" style="display:none"/>
    </td>
    <td width="75%" bgcolor="#FFFFFF" align="left">
                    <select name="hetong_id" id="hetong_id" onclick="hetongSelect()" style="width: 331px;">
                
            </select>
    </td>
</tr>
<tr align='center' bgcolor="#FFFFFF" onMouseMove="javascript:this.bgColor='red';" onMouseOut="javascript:this.bgColor='#FFFFFF';" height="22">
    <td width="25%" bgcolor="#FFFFFF" align="right">
        收款时间：
    </td>
    <td width="75%" bgcolor="#FFFFFF" align="left">
       <input name="shoukuanshijian" readonly="readonly" class="Wdate" style="width: 331px;"  type="text" onfocus="WdatePicker({skin:'whyGreen',dateFmt:'yyyy-MM-dd'})"/>
    </td>
</tr>
<tr align='center' bgcolor="#FFFFFF" onMouseMove="javascript:this.bgColor='red';" onMouseOut="javascript:this.bgColor='#FFFFFF';" height="22">
    <td width="25%" bgcolor="#FFFFFF" align="right">
        收款金额：
    </td>
    <td width="75%" bgcolor="#FFFFFF" align="left">
       <input value="2000" type="text" name="shoukuanjine" style="width: 331px;" onkeyup="this.value=this.value.replace(/\D/g,'')" onafterpaste="this.value=this.value.replace(/\D/g,'')"/>
    </td>
</tr>
<tr align='center' bgcolor="#FFFFFF" onMouseMove="javascript:this.bgColor='red';" onMouseOut="javascript:this.bgColor='#FFFFFF';" height="22">
    <td width="25%" bgcolor="#FFFFFF" align="right">
        &nbsp;
    </td>
    <td width="75%" bgcolor="#FFFFFF" align="left">
       <input type="button" value="提交" onclick="check()"/>&nbsp; 
       <input type="reset" value="重置"/>&nbsp;
    </td>
</tr>
 </table>
</form>
   </body>读取不到下拉列表数据：怎么弄？

解决方案 »

  1.   

    你这是用的什么框架啊，有后端代码么，业务层的，dao层的
      

  2.   


    JAVA框架
    package com.action;import java.io.IOException;
    import java.sql.ResultSet;
    import java.util.ArrayList;
    import java.util.List;import javax.servlet.RequestDispatcher;
    import javax.servlet.ServletConfig;
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;import com.dao.DB;
    import com.orm.TAdmin;
    import com.orm.Thetong;
    import com.orm.Ttixing;
    import com.service.liuService;public class tixing_servlet extends HttpServlet
    {
    public void service(HttpServletRequest req,HttpServletResponse res)throws ServletException, IOException 
    {
            String type=req.getParameter("type");

            if(type.endsWith("tixingAdd"))
    {
    tixingAdd(req, res);
    }
    }

    public void tixingAdd(HttpServletRequest req,HttpServletResponse res)
    {
    int hetong_id=Integer.parseInt(req.getParameter("hetong_id"));
    String shoukuanshijian=req.getParameter("shoukuanshijian");
    int shoukuanjine=Integer.parseInt(req.getParameter("shoukuanjine"));

    String sql="insert into t_tixing values(?,?,?)";
    Object[] params={hetong_id,shoukuanshijian,shoukuanjine};
    DB mydb=new DB();
    mydb.doPstm(sql, params);
    mydb.closed();

    req.setAttribute("msg", "添加提醒成功！");
            String targetURL = "/common/msg.jsp";
    dispatch(targetURL, req, res);
    }
    public void dispatch(String targetURI,HttpServletRequest request,HttpServletResponse response) 
    {
    RequestDispatcher dispatch = getServletContext().getRequestDispatcher(targetURI);
    try 
    {
        dispatch.forward(request, response);
        return;
    } 
    catch (ServletException e) 
    {
                        e.printStackTrace();
    } 
    catch (IOException e) 
    {

        e.printStackTrace();
    }
    }
    public void init(ServletConfig config) throws ServletException 
    {
    super.init(config);
    }

    public void destroy() 
    {

    }
    }