SSM分页（同步刷新页面）

Posted 2021-01-20 2070393244com

前段代码：

<div align="center">
    <div id="div11" align="center">
        <c:choose>
            <c:when test="${alluser eq null or fn:length(alluser)==0}">
                <font>不存在用户</font>
            </c:when>
            <c:otherwise>
                <table align="center" border="1px soild red" cellpadding="0" cellspacing="0">
                    <tr>
                        <td>编号</td>
                        <td>姓名</td>
                        <td>密码</td>
                        <td>生日</td>
                        <td>地点</td>
                        <c:forEach var="item" items="${alluser}">
                    <tr>
                        <td>${item.id}</td>
                        <td>${item.uname}</td>
                        <td>${item.upass}</td>
                        <td><fmt:formatDate value="${item.ubirth}" pattern="yyyy-MM-dd"/> </td>
                        <td>${item.place}</td>
                    </tr>
                    </c:forEach>
                    </tr>
                </table>
            </c:otherwise>
        </c:choose>
    </div>
    <div align="center" id="div12">
        <script type="text/javascript">
            for (var i=1;i<=${buttonnum};i++){
                document.write("<button class=‘btn‘ value="+i+" onclick="+"javascript:functiononclick("+i+");>"+i+"</button>&nbsp;")
            }
            function functiononclick(id) {
                location.href="buttonid?id="+id;
            }
        </script>
    </div>
</div>

java后台代码

 pasting

<!--查询用户数据条数-->
<select id="selectusercounts" resultType="integer">
   select count(*) from users;
</select>

<!--查询用户数据条数-->
<select id="selectuserfenye" resultType="com.example.orm.Users">
    SELECT * from users LIMIT #{num},#{sizes};
</select>

 java代码：

try {
    //前段请求id
    Integer integer = new Integer(id);
    //每个页面的数据
    int sizes=4;
    //每个页面数据开始的位置
    int num=((integer-1)*sizes);
    //计算显示多少个请求按钮
    int buttonnum=0;
    //获取数据条数
    Integer selectusercounts = userService.selectusercounts();
    if(selectusercounts%sizes==0){
        buttonnum=selectusercounts/sizes;
    }else {
        buttonnum=selectusercounts/sizes+1;
    }
    //按条件查询数据
    List<Users> users = userService.selectuserfenye(num, sizes);
    //保存数据到modelAndView
    modelAndView.addObject("alluser",users);
    modelAndView.addObject("buttonnum",buttonnum);
    //System.out.println(users.toString());
    //跳转的目的界面
    modelAndView.setViewName("fenteusers");
} catch (Exception e) {
    e.printStackTrace();
}

pasting