//我的action获取从数据获取了城市的列表,是从city表中取的，就id，cityname俩个字段
int id =Integer.parseInt(request.getParameter("id"));
List citylist=cityDao.findAll();
User user=userDao.findId("id");
request.setAttribute("User", user);
request.setAttribute("cityList", citylist);
return mapping.findForward("update");

//我有个用户表，有个字段是城市，就是根据页面的城市下拉框取值的，
//现在在页面如何让它加载修改页面的时候，城市列表就是我之前选择的那个值，而不是“请选择”

<select name="User.city">
    
     <c:forEach items="${requetsScope.cityList}" var="city">
    <option value="${city.cityname}">
        ${city.cityname }
    </option>
     </c:forEach>
     <c:if test="{User.city==city.cityname}">
        <option value="${city.cityname}" selected>
        ${city.cityname }
    </option>
     </c:if>
             
</select>

conn.close(); 
rs.close(); 
smt.close();

------解决方案--------------------

[code=Java] 
  <select name= "User.city ">  
      
       <c:forEach items= "${requetsScope.cityList} " var= "city ">  
        <c:if test= "{User.city!=city.cityname} ">  
        <option value= "${city.cityname} ">  
         ${city.cityname } 
        </option>  
       </c:if>  
        <c:if test= "{User.city==city.cityname} ">  
          <option value= "${city.cityname} " selected>  
            ${city.cityname } 
          </option>  
       </c:if>  
   </c:forEach>  
        
  </select>  
  
 [/code]

------解决方案--------------------
http://blog.csdn.net/APOLLO_TS/archive/2009/09/19/4569135.aspx

------解决方案--------------------
<c:if test="{User.city==city.cityname}"></c:if>
是不是这个地方 改成这样试试？？？

<c:if test="{User.city.cityname==city.cityname}"></c:if>
哎


------解决方案--------------------
jstl ${User.city.cityname eq city.cityname } eq

------解决方案--------------------
<select name="User.city">
  
    <c:forEach items="${requetsScope.cityList}" var="city">




你单词 写错了。。。 requestScope.cityList

------解决方案--------------------
细节呀。。。。。。。


------解决方案--------------------
[Quote=引用:]
Java code

    <c:forEach   items= "${requetsScope.cityList} "   var= "city ">