默认已经配置好了mybatis了
如果没有配置好,请参考 springBoot&&mybatis
接下来开始我们的正文:
1.引入相关的jar包,在pom.xml文件中:
<!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper-spring-boot-starter -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.2.10</version>
</dependency>
2.在application.properties文件中添加一下配置
#pagehelper分页插件配置
pagehelper.helperDialect=mysql
pagehelper.reasonable=true
pagehelper.supportMethodsArguments=true
pagehelper.params=count=countSql
3.在controller层使用
@ResponseBody
@RequestMapping(value="/getYoutube",method=RequestMethod.GET)
public Map<String, Object> getYoutube(@RequestParam(value = "pn", defaultValue = "1") Integer pn,HttpServletResponse response) {
response.setHeader("Access-Control-Allow-Origin", "*");
Map<String, Object> map=new HashMap<String, Object>();
// 表示从第pn查,每一页显示5条数据
PageHelper.startPage(pn, 10);// 后面紧跟的这个查询就是分页查询
List<Youtube>lYoutubes= YouTubeService.getYoutube();
PageInfo page = new PageInfo(lYoutubes, 5);// 5:表示每次只显示5页的导航菜单
map.put("cartoons",page);
return map;
}
前端接收解析即可