EasyExcel 2 上传 下载

Maven依赖

<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>easyexcel</artifactId>
  <version>2.1.6</version>
</dependency>

实体类

package com.ruiguo.modal;

import com.alibaba.excel.annotation.ExcelProperty;

import java.io.Serializable;

/**
 *  excel 导入,导出实体类对象
 * @author jiaruiguo
 */
public class UserInfoBean implements Serializable {

    @ExcelProperty(value = "ID", index = 0)
    private String userId;

    @ExcelProperty(value = "NAME", index = 1)
    private String userName;

    @ExcelProperty(value = "PHONE", index = 2)
    private String phoneNum;

    @ExcelProperty(value = "GENDER", index = 3)
    private String gender;

    @ExcelProperty(value = "HEIGHT", index = 4)
    private String height;

    public String getUserId() {
        return userId;
    }
    public void setUserId(String userId) {
        this.userId = userId;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getPhoneNum() {
        return phoneNum;
    }
    public void setPhoneNum(String phoneNum) {
        this.phoneNum = phoneNum;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }
    public String getHeight() {
        return height;
    }
    public void setHeight(String height) {
        this.height = height;
    }
    @Override
    public String toString() {
        return "UserInfoBean{" +
                "userId='" + userId + '\'' + ", userName='" + userName + '\'' + 
                ", phoneNum='" + phoneNum + '\'' +  ", gender='" + gender + '\'' + 
                 ", height='" + height + '\'' +
                '}';
    }
}

Excel导入

/**
* excel 文件导入
 * @param inputStream
 * @param clazz
 */
public static List<? extends Object> importExcel(InputStream inputStream, Class clazz,List<? extends Object> list) {
    try {
        return EasyExcel.read(inputStream)
                .head(clazz)
                .sheet(0)
                .doReadSync();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

Excel导出

/**
 * excel 文件导出
 */
public static void exportExcel(OutputStream outputStream, Class clazz, List<? extends Object> list) {
    EasyExcel.write(outputStream,clazz)
            .excelType(ExcelTypeEnum.XLSX)
            .sheet("sheet1")
            .doWrite(list);
}

功能测试

导入测试

// 导入上传
String filePath = "F:\\Download\\inputExcel.xlsx";
List<UserInfoBean> list = new ArrayList<>();
 try {
     InputStream inputStream = new FileInputStream(new File(filePath));
     list = (List<UserInfoBean>) importExcel(inputStream,UserInfoBean.class,list);
     System.out.println("输出:" + list.toString());
 } catch (FileNotFoundException e) {
     e.printStackTrace();
 }

导出测试

// 导出下载
OutputStream outputStream = null;
List<UserInfoBean> list1 = new ArrayList<>();
for (int i = 0; i < 5; i++ ){
    UserInfoBean userInfoBean = new UserInfoBean();
    userInfoBean.setUserId("id_" + i);
    userInfoBean.setUserName("name_" + i);
    userInfoBean.setGender("男" + i);
    userInfoBean.setHeight("17" + i + "cm");
    userInfoBean.setPhoneNum("12345"+ i);
    list1.add(userInfoBean);
}
try {
    outputStream = new FileOutputStream(new File("F:\\Download\\outExcel.xlsx"));
    exportExcel(outputStream, UserInfoBean.class, list1);
} catch (Exception e) {
    e.printStackTrace();
} finally {
    try {
        if (null != outputStream) {
            outputStream.close();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }

}

结果查看

输出:
[
UserInfoBean{userId=‘1’, userName=‘jack’, phoneNum=‘1234567’, gender=‘男’, height=‘165cm’},
UserInfoBean{userId=‘2’, userName=‘lisi’, phoneNum=‘2345678’, gender=‘女’, height=‘175cm’},
UserInfoBean{userId=‘3’, userName=‘zhangsan’, phoneNum=‘3456789’, gender=‘男’, height=‘170cm’}
]