MystWeb / ExcelUtil

ExcelUtil 1.2.1 Doc

ExcelUtil

用于导入导出Excel的Util包，基于Java的POI。可将List导出成Excel，或读取Excel成List,读取时有验证和Log。

Apache Maven

<dependency>
    <groupId>com.sargeraswang.util</groupId>
    <artifactId>excel-util</artifactId>
    <version>RELEASE</version>
</dependency>

数据模型

通常可以使用你的数据表bean,当然如果需要导入/导出的字段与数据表差异很大,可以新增bean,当然也可以跳过bean,直接使用Map,下面是示例Bean:

package com.proaim.entity;

import com.sargeraswang.util.ExcelUtil.ExcelCell;
import lombok.Data;

import java.util.Date;

@Data
public class Model {
    @ExcelCell(index = 0)
    private String a;
    @ExcelCell(index = 1)
    private String b;
    @ExcelCell(index = 2)
    private String c;
    @ExcelCell(index = 3)
    private Date d;

    public Model(String a, String b, String c, Date d) {
        this.a = a;
        this.b = b;
        this.c = c;
        this.d = d;
    }
    
    //setter and getter 省略...
}

测试类

package com.proaim;

import com.proaim.entity.Model;
import com.sargeraswang.util.ExcelUtil.ExcelLogs;
import com.sargeraswang.util.ExcelUtil.ExcelUtil;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.io.*;
import java.util.*;

@RunWith(SpringRunner.class)
@SpringBootTest
public class ExcelUtilApplicationTests {

    @Test
    // 导出-Bean方式
    public void exportBeanXls() throws IOException {
        //用排序的Map且Map的键应与ExcelCell注解的index对应
        Map<String, String> map = new LinkedHashMap<>();
        map.put("a", "姓名");
        map.put("b", "年龄");
        map.put("c", "性别");
        map.put("d", "出生日期");
        Collection<Object> dataset = new ArrayList<Object>();
        dataset.add(new Model("", "", "", null));
        dataset.add(new Model(null, null, null, null));
        dataset.add(new Model("王五", "34", "男", new Date()));
        File file = new File(new File("").getCanonicalPath() + "/src/main/resources/excel/test.xls");
        OutputStream out = new FileOutputStream(file);
        ExcelUtil.exportExcel(map, dataset, out);
        out.close();
    }

    @Test
    // 导出-Map方式
    public void exportMapXls() throws IOException {
        List<Map<String, Object>> list = new ArrayList<>();
        Map<String, Object> map = new LinkedHashMap<>();
        map.put("name", "");
        map.put("age", "");
        map.put("birthday", "");
        map.put("sex", "");
        Map<String, Object> map2 = new LinkedHashMap<String, Object>();
        map2.put("name", "测试是否是中文长度不能自动宽度.测试是否是中文长度不能自动宽度.");
        map2.put("age", null);
        map2.put("sex", null);
        map.put("birthday", null);
        Map<String, Object> map3 = new LinkedHashMap<String, Object>();
        map3.put("name", "张三");
        map3.put("age", 12);
        map3.put("sex", "男");
        map3.put("birthday", new Date());
        list.add(map);
        list.add(map2);
        list.add(map3);
        Map<String, String> map1 = new LinkedHashMap<>();
        map1.put("name", "姓名");
        map1.put("age", "年龄");
        map1.put("birthday", "出生日期");
        map1.put("sex", "性别");
        File file = new File(new File("").getCanonicalPath() + "/src/main/resources/excel/test.xls");
        OutputStream out = new FileOutputStream(file);
        ExcelUtil.exportExcel(map1, list, out);
        out.close();
    }


    // xls导入
    @Test
    public void importXls() throws FileNotFoundException {
        File f = new File("src/main/resources/excel/test.xls");
        InputStream inputStream = new FileInputStream(f);

        ExcelLogs logs = new ExcelLogs();
        Collection<Map> importExcel = ExcelUtil.importExcel(Map.class, inputStream, "yyyy/MM/dd HH:mm:ss", logs, 0);

        for (Map m : importExcel) {
            System.out.println(m);
        }
    }

    // xlsx导入
    @Test
    public void importXlsx() throws FileNotFoundException {
        File file = new File("src/main/resources/excel/test.xlsx");
        InputStream inputStream = new FileInputStream(file);

        ExcelLogs logs = new ExcelLogs();
        Collection<Map> importExcel = ExcelUtil.importExcel(Map.class, inputStream, "yyyy/MM/dd HH:mm:ss", logs, 0);

        for (Map m : importExcel) {
            System.out.println(m);
        }
    }

}

Posted by ZiMing 2019-2-21