@Configuration
public class MybatisConfig {
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return interceptor;
    }
}

官網(wǎng)復制即可，只是你需要把數(shù)據(jù)庫改為你使用的，這里我是使用mysql

2.寫接口測試

很簡單

@GetMapping("/test")
    public Response test(){
        Page<Produce> producePage = new Page<>(1,1);
        Page<Produce> page = produceService.page(producePage);
        System.out.println(producePage == page);
        List<Produce> records = page.getRecords();
        for (Produce record : records) {
            System.out.println(record);
        }
        return new Response<>(records, ResultEnum.SUCCESS);
    }

默認是會查詢總條數(shù)，都有get、set方法，可以根據(jù)自己的需求設置（點開Page類看看）

3.注意

我們傳入的page對象和查詢返回的page對象是同一個

4.如果你還有查詢條件

比如我們只查詢id和price，id小于5的分頁查詢

1.Lambda表達式

@GetMapping("/test")
public Response test(){
    Page<Produce> producePage = new Page<>(1,2);
    Page<Produce> page = new LambdaQueryChainWrapper<>(produceService.getBaseMapper())
            .select(Produce::getPid,Produce::getPrice)
            .lt(Produce::getPid,5)
            .page(producePage);

    return new Response<>(page.getRecords(), ResultEnum.SUCCESS);
}

2.普通查詢

@GetMapping("/test")
public Response test(){
    Page<Produce> producePage = new Page<>(1,2);
    QueryWrapper<Produce> queryWrapper = new QueryWrapper<>();
    queryWrapper.select("pid","price");
    queryWrapper.lt("pid",5);
    Page<Produce> page = produceService.page(producePage, queryWrapper);
    return new Response<>(page.getRecords(), ResultEnum.SUCCESS);
}