How does Springboot integrate the pagehelper paging function?

1. Add dependencies

Find the version of pagehelper in maven

Add dependencies in pom

<dependency>
   <groupid>com.github.pagehelper</groupid>
   <artifactid>pagehelper-spring-boot-starter</artifactid>
      <version>1.2.2</version>
</dependency>

2 , use

Many articles on the Internet will say that you need to configure application.properties

In fact, it is not necessary at all, the default settings already meet most needs

You can use it directly

@RequestMapping(value = "getApps.do")
public String getApps(Apps apps) {
  PageHelper.startPage(apps.getPageNum(), apps.getPageSize());
  ArrayList<apps> appsList = appsService.getApps(apps);
  PageInfo<apps> appsPageInfo = new PageInfo(appsList);
  return JSON.toJSONString(appsPageInfo);
}</apps></apps>

PageHelper.startPage (the number of pages to be displayed, the number of each page to display);

The next line follows the query statement, not allowed Write something else, otherwise it will have no effect.

PageHelper.startPage(apps.getPageNum(), apps.getPageSize());
ArrayList<apps> appsList = appsService.getApps(apps);</apps>

This only has a paging effect, and there is no detailed information about the total number of pages.

If there is a demand for the number of pages, etc., you need to add The following line

PageInfo<t> appsPageInfo = new PageInfo(appsList);</t>

thus meets all paging requirements

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