请大家帮忙看下
我出现了一个问题就是选择药品名称时,可以出现它的药品规格和药品价格相对应记录,但是刷新页面得到的不是我选择的药品名称.而是出现的刚进入界面的(请选择药品名称).怎么样修改呢?我把代码贴出来了,谢谢了,毕业设计等着急.
<%@ page import= "java.sql.*,java.util.* "%>
<%@ include file= "../include/ccs.inc "%>
<%@ page language= "java "
import= "java.util.*,com.mytest.Hospital.Patient,com.mytest.Hospital.Doctor,com.mytest.Hospital.Drug "
pageEncoding= "gbk "%>
<%@ page contentType= "text/html;charset=GBK "%>
<jsp:useBean id= "NurseBeanBusiness "
class= "com.mytest.Hospital.NurseBean " scope= "page "> </jsp:useBean>
<jsp:useBean id= "patient " class= "com.mytest.Hospital.Patient "
scope= "page "> </jsp:useBean>
<jsp:useBean id= "drug " class= "com.mytest.Hospital.Drug " scope= "page "> </jsp:useBean>
<jsp:setProperty name= "patient " property= "* " />
<html>
<head>
<script language= "javascript ">
function show(drug_name)
{
var url = "InputEveryDayInfo.jsp?drug_name= " + drug_name;
window.location=url;
}
function change(drug_name)
{
var url= "InputEveryDayInfo.jsp "
var url1= "InputEveryDayItemInfo.jsp "
if(window.confirm( "是否还需要添加药品？ ")){
window.location=url;
return url;
}
window.location=url1;
return url1;
}
</script>
</head>
<body bgcolor= "#FFFFFF ">
<%
double drug_cost=0;
String drug_basic_unit= " ";
String drug_name=request.getParameter( "drug_name ");
if(drug_name==null||drug_name.equals( " "))
{
drug_name= "请选择药品名字 ";
}
else{
byte b[]=drug_name.getBytes( "ISO-8859-1 ");
drug_name=new String(b);}
Iterator it1 = NurseBeanBusiness.getdrugotherInfo(drug_name);
while (it1.hasNext()) {
Drug drug2 = (Drug) it1.next();
drug_cost=drug2.getDrugCost();
drug_basic_unit=drug2.getDrugBasicUnit();
}
%>
<table width= "770 " height= "423 " border= "0 " align= "center "
cellpadding= "0 " cellspacing= "1 " bgcolor= "#000000 ">
<tr>
<td height= "421 " bgcolor= "#FFFFFF ">
<table width= "770 " border= "0 " align= "center " cellpadding= "0 "
cellspacing= "0 ">
<tr>
<td>
<br>
</td>
<td width= "411 ">
</td>
</tr>
<tr>
<td width= "359 ">
<img src= "/Hospital/images/LEFTBAR.gif " width= "359 " height= "39 ">
</td>
<td align= "right " bgcolor= "336CA1 ">
</td>
</tr>
<tr>
<td colspan= "2 ">
<img src= "/Hospital/images/TOPBAR.gif " width= "770 " height= "69 ">
</td>
</tr>
<tr>
<td colspan= "2 ">
<table width= "770 " height= "290 " border= "0 " align= "center "
cellpadding= "0 " cellspacing= "0 ">
<tr>
<%@ include file= "../include/nurse.inc "%>
<td width= "603 " align= "center " valign= "top ">
<table width= "100% " height= "85% " border= "0 " cellpadding= "3 "
cellspacing= "1 " bgcolor= "#666666 ">
<tr>
<td width= "100% " height= "257 " align= "left " valign= "top "
bgcolor= "E3EDFF ">
<br>
<center>
<form action= "showAllInputInfo.jsp " name= "queryinfo "
method= "POST ">
<%
Drug drug1 = new Drug();
%>
<p>
病人id:
<input type= "text " name= "patient_name ">
</p>
<table width=500 align=center border= "1 ">
<tr id= " <%=drug1.getDrugName()%> ">
<td>
<select name= "drug_name " onchange= "show(this.value) ">
<option value= " "> 请选择药品名称 </option>
<%
Iterator it = NurseBeanBusiness.getAlldrug();
while (it.hasNext()) {
drug1 = (Drug) it.next();
drug_name=drug1.getDrugName();
%>
<option value= <%=drug_name%> >
<%=drug_name%>
</option>
<%
}
%>
</select>
</td>
<td>
药品规格:
<input type= "text " name= "drug_basic_unit " value= <%=drug_basic_unit %> >
</td>
<td>
药品价格:
<input type= "text " name= "drug_cost " value= <%=drug_cost %> >
</td>
</tr>
</table>
<p>
<input type=button value= "提交 " onClick= "change( <%drug1.getDrugName(); %> ); ">
</form>
</center>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</body>
</html>
[解决办法]
根据你的描述，可以得出以下推断：
得到的药品名称是：“请选择药品”
你可以在提交前用JAVASCRIPT把 选择药品的下拉列表值打出来看看是否为默认
还有可能就是你代码问题，把药品这个变量变成了常量
