【发布时间】:2014-09-27 19:01:58
【问题描述】:
嗨,在我的 spring hibernate 注释应用程序中,我使用 jsp 作为视图。在 jsp 中,我将值从我的 mysql 数据库加载到下拉列表中。但我无法将选定的值从 jsp 页面传输到控制器。我在 mysql 中有两个表 employee 表和 team 表。我想显示所选团队中的所有员工。例如,如果我从下拉列表中选择 team1,我想显示 team1 中的所有员工。单击提交按钮时出现空指针执行错误。
我的jsp页面代码sn-p用于加载mysql数据库值到下拉列表
<form:form method="POST" action="Search.html">
<table>
<tr>
<td>
<form:label path="teams.teamId" id="teams">Team Name</form:label>
</td>
<td>
<form:select path="teams.teamId" cssStyle="width: 150px;">
<option value="-1">Select a type</option>
<c:forEach items="${teamKey}" var="teams">
<option value="${teams.teamId}" >${teams.teamName}</option>
</c:forEach>
<tr>
<td colspan="2"><input type="submit" value="submit"> </td>
</tr>
</form:select>
</tr>
</table>
</form:form>
resourcedaoimpl 中的休眠选择查询
@Override
public void serchResources(int teamid) {
// TODO Auto-generated method stub
System.out.println("teamid is given---------- :"+teamid);
sessionfactory.getCurrentSession().createQuery("FROM Resource WHERE teamId=" +teamid);
System.out.println("After query teamid is given--************* :"+teamid);
}
控制器类
@RequestMapping(value="/Search",method = RequestMethod.POST)
public ModelAndView fromSearch(@ModelAttribute("command") Resource resource,BindingResult result){
return new ModelAndView("redirect:/searchResult.html");
}
@RequestMapping(value="/searchResult",method = RequestMethod.GET)
public ModelAndView searchResult(@ModelAttribute("command") Resource resource,BindingResult result){
Map<String, Object> model = new HashMap<String, Object>();
//to print employee table
model.put("resourcekey",resourceServices.listResources());
//lists teams
model.put("teamKey", addteamServices.listTeams());
return new ModelAndView("Search",model);
}
感谢您的建议..
【问题讨论】:
标签: mysql jsp jakarta-ee spring-mvc hibernate-annotations