今天是大年初一，趕快開學吧，每天很無聊，唯一感

覺還有點新年的味道就是昨天公司老師帶我們去海麗

軒吃年夜飯，兄弟還是挺多的，心情也很好的！今天

復習OA的映射，對這不熟悉啊，還得努力。。。
一.
多對多：對role.java文件，其中映射文件如下：
   <set name="employees" table="itcast_employee_role">
      <key column="roleId"></key>
      <many-to-many class="Employee"

column="employeeId"></many-to-many>
   </set>
 對員工Employee.java來說，映射文件如下：
   <set name="roles" table="itcast_employee_role">
      <key column="employeeId"></key>
      <many-to-many class="Role" column="roleId"></many-to-many>
   </set>
一對一：員工和帳號，對于附屬類帳號，映射文件如

下：
<id name="id">
  <generator class="foreign">
     <param name="property">employee</param>
  </generator>
</id>
<one-to-one name="employee" constrained="true"></one-to-one>

主類（employee）,映射文件：
<one-to-one name="user"></one-to-one>


二.方法：

/** 列表 */
    public ActionForward list(ActionMapping mapping,

ActionForm form, HttpServletRequest request, HttpServletResponse

response)
            throws Exception {
        return mapping.findForward("list"); // list.jsp
    }

    /** 添加頁面 */
    public ActionForward addUI(ActionMapping mapping,

ActionForm form, HttpServletRequest request, HttpServletResponse

response)
            throws Exception {
        return mapping.findForward("saveUI");
    }

    /** 添加 */
    public ActionForward add(ActionMapping mapping,

ActionForm form, HttpServletRequest request, HttpServletResponse

response)
            throws Exception {
        return mapping.findForward("toList");    }

    /** 修改頁面 */
    public ActionForward editUI(ActionMapping mapping,

ActionForm form, HttpServletRequest request, HttpServletResponse

response)
            throws Exception {
        return mapping.findForward("saveUI");
    }

    /** 修改 */
    public ActionForward edit(ActionMapping mapping,

ActionForm form, HttpServletRequest request, HttpServletResponse

response)
            throws Exception {
        return mapping.findForward("toList");
    }

    /** 刪除 */
    public ActionForward del(ActionMapping mapping,

ActionForm form, HttpServletRequest request, HttpServletResponse

response)
            throws Exception {
        return mapping.findForward("toList");
    }

三.
標簽復習：
<html:form>
<html:text>
<html:hidden>
<html:textarea>



javascript復習：
<html:link action="/role?method=del&id=${role.id}" onlick="return

window.confirm('您確定要刪除一條記錄嗎？');">刪除

</html:link>

在頁面中
<html:rewrite action="/role?method=addUi"/>

<script type="text/javascript">
  funcion addUI(){
   window.location.href="<html:rewrite action='/role?method=addUI'";
  }
</script>

<srcipt type="text/java"
<script type="text/javascript">
  funcion checkForm(form){
   if($.trim(form.name.value) == "" ){}
     alert("");
     form.name.focus();
     return false;
  }
  return true;
  }
</script>

四.在Action中進行驗證
ActionErrors errors = form.validate(mapping,request);

if(errors!=null&&errors.size()>0){
  saveErrors(request,errors);
  return mapping.findForward("addUI");
}

五.HQL語句

getSession().createQuery("FROM Department d WHERE d.parent is

NULL")//
.list();

六.樹形展示菜單

 List<Department> list = new ArrayList<Department>();
 printInfo(topLevel,"",list);
 return list;
注意空格是全角空格，全角空格是中文字符，不會合

并。

public static void printInfo(Collection<Department>

departmentList,String prefix,List<Department> list){
 for(Department department : departmentList){
    department.setName(prefix + "|-" + department.getName());
    list.add(department);
   
    printInfo(department.getChildren(),prefix+" ",list);
 }
}

今天就做到這了！