一.版本引用

1.pom.xml文件

<org.mapstruct.version>1.2.0.CR1</org.mapstruct.version>


    <!--mapStruct依赖  start-->
        <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct-jdk8</artifactId>
            <version>${org.mapstruct.version}</version>
        </dependency>
        <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct-processor</artifactId>
            <version>${org.mapstruct.version}</version>
        </dependency>
        <!--mapStruct依赖  end-->

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二.使用

1.pojo对象

package com.sxd.swapping.mybatis.pojo;

import lombok.Data;

import java.time.LocalDateTime;

/**
 * 数据库表的POJO
 */
@Data
public class DownloadUpload {

    /**
     * DB 自增ID
     */
    private Long id;

    /**
     * 业务ID
     */
    private Long duId;

    /**
     * 业务名称
     */
    private String duName;

    /**
     * 业务状态 枚举值
     */

    private Integer duStatus;


    /**
     * 业务时间
     */
    private LocalDateTime createTime;

}

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2.转化对象

package com.sxd.swapping.downloadAndUpload.xlsxDownloadAndUpload.vo;


import com.alibaba.excel.annotation.ExcelIgnore;
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.ColumnWidth;
import lombok.Data;

import java.time.LocalDateTime;

@Data
@ColumnWidth(25)
public class RTReportVO {

    /**
     * 业务ID
     */
    @ExcelIgnore
    private Long duId;

    /**
     * 业务ID
     */
    @ExcelProperty(value = "业务ID",index = 0)
    private String duIdDesc;
    /**
     * 业务名称
     */
    @ExcelProperty(value = "业务名称",index = 1)
    private String duName;

    /**
     * 业务状态 枚举值
     */
    @ExcelIgnore
    private Integer duStatus;

    /**
     * 业务状态 枚举描述
     */
    @ExcelProperty(value = "业务状态",index = 2)
    private String duStatusDesc;

    /**
     * 业务时间  DB字段
     */
    @ExcelIgnore
    private LocalDateTime createTime;

    /**
     * 业务时间 展示字段
     */
    @ExcelProperty(value = "业务时间",index = 3)
    private String createTimeDesc;


}

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3.转化工具定义

package com.sxd.swapping.downloadAndUpload.xlsxDownloadAndUpload.assemble;

import com.sxd.swapping.mybatis.pojo.DownloadUpload;
import com.sxd.swapping.downloadAndUpload.xlsxDownloadAndUpload.vo.RTReportVO;
import org.mapstruct.Mapper;

/**
 * mapstruct
 * Spring支持的克隆
 */
@Mapper(componentModel = "spring")
public interface DUDB2VOAssemble {

    RTReportVO from(DownloadUpload downloadUpload);
}

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4.使用代码

List<DownloadUpload> dbResult = dudbService.query(duQuery);
            if (CollectionUtils.isNotEmpty(dbResult)) {
                List<RTReportVO> reportDTOs = dbResult.stream().map(dudb2VOAssemble::from).collect(Collectors.toList());

            }

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