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>
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...
}
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