最近都在忙着写一个网站项目,今天做一个分页功能的时候,遇到了分页效果实现不了的问题,查了好久的资料,后来终于是成功解决啦,记录一下~
1.在pom.xml中添加分页插件依赖
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<dependency>
<groupid>com.github.pagehelper</groupid>
<artifactid>pagehelper</artifactid>
<version> 4.1 . 5 </version>
</dependency>
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2.在mybatis配置文件中配置分页插件
这里需要注意的是,如果你的项目有mybatis的配置文件时,添加下面配置:(配置参数可根据需要添加或删除)
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<plugins>
<plugin interceptor= "com.github.pagehelper.pagehelper" >
<property name= "dialect" value= "mysql" />
<property name= "offsetaspagenum" value= "false" />
<property name= "rowboundswithcount" value= "false" />
<property name= "pagesizezero" value= "true" />
<property name= "reasonable" value= "false" />
<property name= "supportmethodsarguments" value= "false" />
<property name= "returnpageinfo" value= "none" />
</plugin>
</plugins>
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但如果你的项目没有单独配置mybatis的配置文件,而是把spring和mybatis的配置结合起来的话,这时候你需要引入如下配置信息:
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<!-- spring和mybatis完美整合,不需要mybatis的配置映射文件 -->
<bean id= "sqlsessionfactory" class = "org.mybatis.spring.sqlsessionfactorybean" >
<property name= "datasource" ref= "datasource" />
<!-- 自动扫描mapping.xml文件 -->
<property name= "mapperlocations" value= "classpath:com/wang/web/mapper/*.xml" ></property>
<!-- 配置分页插件 -->
<property name= "plugins" >
<array>
<bean class = "com.github.pagehelper.pagehelper" >
<property name= "properties" >
<value>
dialect=mysql
reasonable= true
</value>
</property>
</bean>
</array>
</property>
</bean>
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3.controller层
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//访问所有视频信息查询页面
/**
* 分页查询所有视频信息
* @param pn 默认从第一页开始 请求参数
* @return
*/
@requestmapping ( "/showmedia" )
public string show( @requestparam (required = false ,value= "pn" ,defaultvalue= "1" )integer pn, httpservletrequest request){
tbmediaexample example = new tbmediaexample();
//从第一条开始 每页查询五条数据
pagehelper.startpage(pn, 5 );
list<tbmedia> medialist = mediaservice.selectbyexample(example);
//将用户信息放入pageinfo对象里
pageinfo pageinfo = new pageinfo(medialist, 5 );
system.out.println(pageinfo.getpages());
request.setattribute( "pageinfo" , pageinfo);
return "/media" ;
}
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4.前台
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<div class = "result-content" >
<table class = "result-tab" width= "100%" >
<tr>
<th class = "tc" width= "5%" ><input class = "allchoose" name= "" type= "checkbox" ></th>
<th>排序</th>
<th>id</th>
<th>视频标题</th>
<th>视频资源</th>
<th>视频图片</th>
<th>视频描述</th>
<th>上传时间</th>
<th>操作</th>
</tr>
<c: if test= "${!empty pageinfo.list }" >
<c:foreach items= "${pageinfo.list}" var= "media" >
<tr>
<td class = "tc" ><input name= "id[]" value= "59" type= "checkbox" ></td>
<td>
<input name= "ids[]" value= "59" type= "hidden" >
<input class = "common-input sort-input" name= "ord[]" value= "0" type= "text" >
</td>
<td align= "center" >${media.id }</td>
<td align= "center" >${media.title }</td>
<td align= "center" >${media.src }</td>
<td align= "center" >${media.picture }</td>
<td align= "center" >${media.descript }</td>
<td align= "center" >${media.uptime }</td>
<td>
<a class = "link-update" href= "<%=basepath%>user/mediaupdate?id=${media.id }" rel= "external nofollow" >修改</a>
<a class = "link-del" href= "<%=basepath%>user/medialist" rel= "external nofollow" >进入视频列表</a>
<a class = "link-del" href= "javascript:del('${media.id }')" rel= "external nofollow" >删除视频</a>
</td>
</tr>
</c:foreach>
</c: if >
</table>
<hr style= "height:1px;border:none;border-top:1px solid #ccc;" />
<!-- 分页导航栏 -->
<!-- 分页信息 -->
<div class = "row" >
<!-- 分页文字信息,其中分页信息都封装在pageinfo中 -->
<div class = "col-md-6" >
当前第:${pageinfo.pagenum}页,总共:${pageinfo.pages}页,总共:${pageinfo.total}条记录
</div>
<!-- 分页条 -->
<div class = "col-md-6" >
<nav aria-label= "page navigation" >
<ul class = "pagination" >
<li><a href= "<%=basepath%>user/showmedia?pn=1" rel= "external nofollow" >首页</a></li>
<c: if test= "${pageinfo.haspreviouspage }" >
<li>
<a href= "<%=basepath%>user/showmedia?pn=${pageinfo.pagenum-1}" rel= "external nofollow" aria-label= "previous" >
<span aria-hidden= "true" >«</span>
</a>
</li>
</c: if >
<c:foreach items= "${pageinfo.navigatepagenums }" var= "page_num" >
<c: if test= "${page_num == pageinfo.pagenum }" >
<li class = "active" ><a href= "#" rel= "external nofollow" >${ page_num}</a></li>
</c: if >
<c: if test= "${page_num != pageinfo.pagenum }" >
<li><a href= "<%=basepath%>user/showmedia?pn=${ page_num}" rel= "external nofollow" >${ page_num}</a></li>
</c: if >
</c:foreach>
<c: if test= "${pageinfo.hasnextpage }" >
<li>
<a href= "<%=basepath%>user/showmedia?pn=${pageinfo.pagenum+1}" rel= "external nofollow" aria-label= "next" >
<span aria-hidden= "true" >»</span>
</a>
</li>
</c: if >
<li><a href= "<%=basepath%>user/showmedia?pn=${pageinfo.pages}" rel= "external nofollow" >末页</a></li>
</ul>
</nav>
</div>
</div>
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效果实现如下:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/wy__kobe/article/details/84884265