Mybatis-Plus - 分頁查詢
阿新 • • 發佈:2021-09-07
目錄
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作者:Maggieq8324
出處:https://www.cnblogs.com/maggieq8324/
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前言
記錄下Mybatis-Plus
的分頁查詢,Mybatis-Plus
的整合在上一篇文章:SpringBoot - 整合Mybatis-Plus
環境
SpringBoot2.53 + Mybatis-Plus3.3.0
具體實現
- 配置類
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration public class MybatisPlusConfig { /** * 分頁外掛(PaginationInterceptor) * 不配置此項返回的是全部記錄 * @return */ @Bean public PaginationInterceptor paginationInterceptor() { return new PaginationInterceptor(); } }
ProductController.java
import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; @RequestMapping("/product") @RestController public class ProductController { @Autowired private ProductService productService; /** * 查詢Product分頁 * @param page * @param count * @return */ @GetMapping("/page") public PageResponseVo<Product> selectProductPage(@RequestParam(required = false, defaultValue = "0") Integer page, @RequestParam(required = false, defaultValue = "10") Integer count) { return productService.getProductPage(page, count); } }
ProductService.java
import java.util.List;
public interface ProductService {
PageResponseVo<Product> getProductPage(Integer page, Integer count);
}
ProductServiceImpl.java
import com.baomidou.mybatisplus.core.metadata.IPage; import com.baomidou.mybatisplus.extension.plugins.pagination.Page; import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class ProductServiceImpl extends ServiceImpl<ProductMapper, Product> implements ProductService { /** * 獲取分頁資料 * @param page * @param count * @return */ @Override public PageResponseVo<Product> getProductPage(Integer page, Integer count) { Page<Product> pager = new Page<>(page, count); IPage<Product> paging = this.getBaseMapper().selectPage(pager, null); return new PageResponseVo(paging.getTotal(), paging.getRecords(), paging.getCurrent(), paging.getSize()); } }
ProductMapper.java
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.springframework.stereotype.Repository;
@Repository
public interface ProductMapper extends BaseMapper<Product> {
}
Product.java
import com.baomidou.mybatisplus.annotation.TableName;
import com.fasterxml.jackson.annotation.JsonIgnore;
import lombok.Getter;
import lombok.Setter;
import java.util.Date;
@Getter
@Setter
@TableName("product")
public class Product {
private Integer id;
private String title;
@JsonIgnore
private Date createTime;
}
PageResponseVo.java
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.List;
/**
* @Description 分頁資料統一返回
* @author coisini
* @date Sep 7, 2021
* @Version 1.0
*/
@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
public class PageResponseVo<T> {
private long total;
private List<T> items;
private long page;
private long count;
}