EasyPOI入門

EasyPoi，主打簡單，不過功用依然OK(絕對夠用)。

入門實例

基於maven項目

1.導包

<!-- easypoi的支持 -->
<dependency>
  <groupId>cn.afterturn</groupId>
  <artifactId>easypoi-base</artifactId>
  <version>3.2.0</version>
</dependency>
<dependency>
  <groupId>cn.afterturn</groupId>
  <artifactId>easypoi-web</artifactId>
  <version>3.2.0</version>
</dependency>
<dependency>
  <groupId>cn.afterturn</groupId>
  <artifactId>easypoi-annotation</artifactId>
  <version>3.2.0</version>
</dependency>

2.實體類

@ExcelTarget("emp")
public class POIEmployee {
/**
@Excel:代表這個字段要生成到excel中去
*/
    private Long id;
    //name:這個excel的表頭名稱
    @Excel(name = "用戶名")
    private String username;
    //width:格子的寬度
    @Excel(name = "郵箱",width=20)
    private String email;
    @Excel(name = "年齡")
    private Integer age;
    //replace：替換  true就會顯示男，false顯示女
    @Excel(name = "性別", replace = { "男_true", "女_false" })
    private Boolean sex;
    //format:導入和導出的日期格式  注:如果數據庫是varchar，還需要配置databaseFormat
    @Excel(name = "出生日期",width = 20,format="yyyy-MM-dd HH:mm:ss")
    private Date bornDate = new Date();
    //type=2代表它是一張圖片
    @Excel(name = "頭像",type = 2 ,width = 20 , height = 20)
    private String headImage;
    @ExcelEntity
    private POIDepartment department;
    ...
}

public class Department {
    private Long id;
    @Excel(name = "部門名稱_emp") //@ExcelEntity(id="emp"):對應另一個關連對象
    private String name;
}

3.測試代碼

導出

public class EasyPOITest {
    //導出
    @Test
    public void test() throws Exception{
        POIDepartment d1 = new POIDepartment();
        d1.setId(1L);
        d1.setName("俱樂部");
        POIEmployee e1 = new POIEmployee();
        e1.setId(1L);
        e1.setUsername("小王");
        e1.setEmail("[email protected]");
        e1.setAge(12);
        e1.setSex(true);
        e1.setHeadImage("images/1.png");
        e1.setDepartment(d1);
        POIEmployee e2 = new POIEmployee();
        e2.setId(2L);
        e2.setUsername("小李");
        e2.setEmail("[email protected]");
        e2.setAge(18);
        e2.setSex(false);
        e2.setHeadImage("images/3.png");
        e2.setDepartment(d1);
        //準備數據(以後是直接讀取這些數據)
        List<POIEmployee> list = new ArrayList<>();
        list.add(e1);
        list.add(e2);
        /**
         * 參數一:導出的一些屬性
         *      title:標題   sheetName:表名
         * 參數二:導出的數據類型
         * 參數三:導出的數據
         */
        Workbook workbook = ExcelExportUtil.exportExcel(new ExportParams("員工信息","員工數據"),POIEmployee.class, list);
        ////保存數據，輸出
        FileOutputStream out = new FileOutputStream("emphaha.xlsx");
        workbook.write(out);
        out.close();
    }
}

導入

 

   @Test
    public void test2() {
        ImportParams params = new ImportParams();
        params.setTitleRows(1);
        params.setHeadRows(1);
         List<PoiUser> list = ExcelImportUtil.importExcel(new File("員工.xlsx"), PoiUser.class, params);
    }