java-将数据绑定到Spring MVC中的下拉框

我有一个简单的spring mvc Web应用程序.我想将列表绑定到下拉列表中.在这种情况下,列表项通常绑定到下拉列表中.但是,如果我选择项目并单击提交按钮,它将始终传递“ 0”而不是值.

这是我的控制器.

public EditEmployeeController() {
        setCommandClass(Employee.class);
        setCommandName("employee");
}

@Override
protected Map referenceData(HttpServletRequest request) throws Exception {
    Map referenceData = new HashMap();        
    List roleList = roleService.listRoles();
    referenceData.put("roleList", roleList);
    return referenceData;
}

@Override
protected ModelAndView onSubmit(HttpServletRequest request,
        HttpServletResponse response,
        Object command,
        BindException errors) throws Exception {
    Employee employee = (Employee) command;
    employeeService.updateEmployee(employee);
    return new ModelAndView(getSuccessView());
}

这是我的观点(jsp)

<c:nestedPath path="employee">
            <form method="post" action="./EditEmployee.htm">
........
.......

Select Role :                
<c:bind path="roleID">
 <select name="roleLists">
   <s:forEach items="${roleList}" var="role" >
       <option value="<s:out value="${role.roleID}"/>" <s:if test="${role.roleID == status.value}"> selected="selected"</s:if>><s:out value="${role.title}"/></option>
        </s:forEach>
  </select>
</c:bind>
<input type="submit" value="Update employee"/
</form>
</c:nestedPath>

任何解决我的问题的主意.. ??

预先感谢！

解决方法:

使用Spring表单标签

添加<％@ taglib prefix =“ form” uri =“ http://www.springframework.org/tags/form”％>在你的jsp中

并使用下面的代码

<form:select path="role"  id="role" >
    <form:options items="${roleList}" itemValue="roleID" itemLabel="title"/>
</form:select>

标签：java,spring-mvc,jsp
来源： https://codeday.me/bug/20191209/2096249.html