基于Java SSM实现Excel数据批量导入

目录

• 导入Maven依赖
• Mapper及映射文件
• 测试

导入Maven依赖

	com.alibaba
	easyexcel
	${easyexcel.version}

Mapper及映射文件

UserMapper.java

@Mapper
public interface UserMapper {
    int batchInsert(@Param("list") List list);
}

UserMapper.xml

  
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
  
  
    
    id, nickname, avatar, account, `password`, gender, tel, email, qq, wechat, salt, 
    info, `status`, create_time, update_time
  
  
    
    insert into tb_user
    (nickname, avatar, account, `password`, gender, tel, email, qq, wechat, salt, info,
    `status`, create_time, update_time)
    values
    
      (#{item.nickname,jdbcType=VARCHAR}, #{item.avatar,jdbcType=VARCHAR}, #{item.account,jdbcType=VARCHAR},
      #{item.password,jdbcType=VARCHAR}, #{item.gender,jdbcType=TINYINT}, #{item.tel,jdbcType=VARCHAR},
      #{item.email,jdbcType=VARCHAR}, #{item.qq,jdbcType=VARCHAR}, #{item.wechat,jdbcType=VARCHAR},
      #{item.salt,jdbcType=VARCHAR}, #{item.info,jdbcType=VARCHAR}, #{item.status,jdbcType=TINYINT},
      #{item.createTime,jdbcType=TIMESTAMP}, #{item.updateTime,jdbcType=TIMESTAMP})
    
  

Excel监听器

@Log4j2
@Service
public class UserExcelListener extends AnalysisEventListener {

	@Resource
	private UserMapper userMapper;

	/**
	 * 批处理阈值
	 */
	private static final int BATCH_COUNT = 250;
	@Getter
	List list = new ArrayList<>(BATCH_COUNT);

	@Override
	public void invoke(User user, AnalysisContext analysisContext) { //逐行读取数据
		log.info("********** 解析到一条数据:{}", JSON.toJSONString(user));
		list.add(user);
		if (list.size() >= BATCH_COUNT) {
            System.out.println("已经解析"+list.size()+"条数据");
			//每250条，往数据库中存一次
			int batchInsertRes = userMapper.batchInsert(list);
			System.out.println(batchInsertRes);
			list.clear();
		}
	}

	@Override
	public void doAfterAllAnalysed(AnalysisContext analysisContext) {
		log.info("**********所有数据解析完成！");
	}
}

测试

@ExtendWith(SpringExtension.class)
@ContextConfiguration("/applicationContext.xml")
public class ExcelUtilTest {
    @Resource
    private UserExcelListener userExcelListener;

    @Test
    void userListener(){
        EasyExcel.read("E:\\Projects\\WorksDisplay\\data\\users.xlsx", User.class, userExcelListener)
                .sheet()
                .doRead();
    }
} 

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