随笔档案

页面代码：
<!--  这个是显示的多选框页面 已有的角色要打勾，可以重新选择角色-->
<form action="<c:url value="/sys/userRolesEdit.htm"/>" method="post" >

      <table class="grid" width="100%" cellspacing="1">
     
    <tr>
       <td colspan="6" class="title">
          角色列表
       </td>
    </tr>
    <tr>
      <td class="column"></td>
       <td class="column">角色ID</td>
       <td class="column">角色名</td>
       <td class="column">角色代码</td>
       <td class="column">角色描述</td>      

    </tr>

    <!-- 循环显示列表userRoles的每一项，并判断如果数据库中已有的打勾<c:if test标签正确才执行中间的代码-->
    <c:forEach items="${roles}" var="item">    
   <tr>      
     <td>
     <input type="checkbox" name="rolesId" <c:forEach items="${userRoles}" var = "selectedRoles">
     <c:if test="${item.srolId == selectedRoles.srolId}">checked="true"</c:if></c:forEach>
      value="<c:out value="${item.srolId}"/>" />
     </td>
   
     <td><c:out value="${item.srolId}"/></td>
        <td><c:out value="${item.srolName}"/> </td>
                 <td><c:out value="${item.srolCode}"/></td>
                 <td><c:out value="${item.srolDesc}"/></td>                
     <tr>       
    </c:forEach>   
   
    <tr>

       <td colspan="6" class="nav">&nbsp;
           <input type="hidden" name="userID"
   value=<c:out value="${userInfo.suinId}"/>>
      <input type="submit" class="button3" value="提交"/>
      <INPUT type="button" class="button2" value="返回" onclick="history.back()" />
     
       </td>
    </tr>
   </table> 
   </form>

控制器代码：
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
  // TODO Auto-generated method stub
  
  Map result = new HashMap();
  
  SysUserinfo userInfo = null;
        String id = request.getParameter("userID");

        System.out.println(id);
        if (id != null && !id.equals(""))
        {
            userInfo = (SysUserinfo) sysService.get(SysUserinfo.class,
                    new Long(id));
           
        }
        else
        {
           
        }
       
        result.put("userInfo", userInfo);
        result.put("roles", sysService.getSupportData("SysRole", null));
        if (userInfo != null)
        {
         result.put("userRoles", sysService.getUserRoles(userInfo));
        }
       
 
       
        SysUserRole sysUserRole = null;
        SysRole sysRole = null;
        String roleId = null;
       
        // 记录父列表ID
        result.put("parentlistID", request.getParameter("parentlistID"));
        result.put("userInfo", userInfo);
        
         //遍历所有map里的key
        Iterator it = result.keySet().iterator();
        while (it.hasNext())
        {
            String key = (String) it.next();
            request.setAttribute(key, result.get(key));
        }
        
         //这里就是从列表多选框传过来的数值。根据name属性获得所有的value
        String[] rolesId = null;
        rolesId = request.getParameterValues("rolesId");
        System.out.println("------------------------" + rolesId + "-------------------");
       
        if (rolesId == null || rolesId.equals(null))
        {
         return new ModelAndView(formView);
        }
       
        else
        {     
         List userRoles = (List)sysService
          .getUsersUserRoles(userInfo.getSuinId());

      //先删除数据库中所有的，再插入所选的值
         for (int k = 0; k < userRoles.size(); k++)
      {
       SysUserRole userRole = (SysUserRole)userRoles.get(k);      
       sysService.delete(userRole);
       
      }
         
         for (int i = 0; i < rolesId.length; i++)
         {
          roleId = rolesId[i];
          
          sysRole = (SysRole)sysService.get(SysRole.class, new Long(roleId));
          sysUserRole = new SysUserRole();
          sysUserRole.setUser(userInfo);
          sysUserRole.setRole(sysRole);
          sysService.save(sysUserRole);        
         }

         //如果在###-servlet.xml配置文件中，successView不能传递参数，可在这里直接有response导向别的页面
         response.sendRedirect(request.getContextPath()
           + "/sys/userRolesList.htm?userID=" + userInfo.getSuinId().toString());
         return null;
        }

 }