Mybatis中的常用OGNL表达式

<if test="userEmail != null or userEmail == '1'">
</if>

<if test="userEmail != null and userEmail != ''">
</if>

<if test="userEmail == null and userEmail == ''">
</if>

<if test="userEmail != null and userEmail != ''">
</if>

<if test="age lt 10">
        #{userEmail,jdbcType=VARCHAR},
</if>

<if test="list != null and list.size() > 0 ">
        #{userEmail,jdbcType=VARCHAR},
</if>

<!-- 多接口参数的查询方法（@Param + javaBean方式） -->
  <select id="selectByUserIdAndEnabledUseBean" resultMap="BaseResultMap">
    select r.id, r.role_name, r.enabled, r.create_by, r.create_time, 
    u.user_name as "user.userName", u.user_email as "user.userEmail"
    from sys_user u 
    inner join sys_user_role ur on u.id = ur.user_id 
    inner join sys_role r on ur.role_id = r.id 
    where u.id = #{user.id} and r.enabled = #{role.enabled}
</select>

<bind name="name" value="@ex.mybatis.rbac.mapper.UserMaperTest@setName()"/>

<bind name="name" value="@ex.mybatis.rbac.mapper.UserMaperTest@NAME"/>

 public ActionForward show(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        
        List<Notice> noticeList = noticeService.getNoticeList();
        request.setAttribute("noticeList", noticeList);
        return mapping.findForward("begin");
    }

<table border="1">
    <tr>
        <td>选择</td>
        <td>主题</td>
        <td>内容</td>
        <td>发表时间</td>
        <td>备注</td>
        <td>编辑人员</td>
    </tr>
    <c:forEach var="notices" items="${requestScope.noticeList }" >
    <tr>
        <td><input type="checkbox" name="keyid" value="${notices.keyid}"/></td>
        <td>${notices.noticeTitle}</td>
        <td>${notices.noticeContent }</td>
        <td>${notices.noticePublishTime}</td>
        <td>${notices.noticeComment}</td>
        <td>${notices.noticeEditor }</td>
    </tr>
    </c:forEach>
</table>