添加一个类，这个类用于初始化 PageInterceptor 这个类，这一次尝试成功，正确返回分页数据。代码如下:

import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import com.github.pagehelper.PageInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.Properties;

@Configuration
public class MyBatisPlusConfig {



    
    @Bean
    public PaginationInnerInterceptor paginationInterceptor() {

        return new PaginationInnerInterceptor();
    }



    @Bean
    PageInterceptor pageInterceptor() {

        PageInterceptor pageInterceptor = new PageInterceptor();
        Properties properties = new Properties();
        properties.setProperty("helperDialect", "mysql");
        pageInterceptor.setProperties(properties);  // 由此可进入源码，
        return pageInterceptor;
    }

}