<dependencies>
        <!--        開發(fā)web 項目和啟動Springboot必須添加的-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>2.4.1</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>easyexcel</artifactId>
            <version>3.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>2.0.3.graal</version>
            <scope>compile</scope>
        </dependency>

    </dependencies>

@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
public class EmployeesEntity {
    @ExcelProperty(index = 0)
    private Integer no;  //工號
    @ExcelProperty(index = 1)
    private String name;
    @ExcelProperty(index = 2)
    private Double fund;
    @ExcelProperty(index = 3)
    private Double postSalary;
    @ExcelProperty(index = 4)
    private Double performanceOf;
    @ExcelProperty(index = 5)
    private Double allWork;
    @ExcelProperty(index = 6)
    private Double violations;
    @ExcelProperty(index = 7)
    private Double traffic;
    @ExcelProperty(index = 8)
    private Double communication;
}

public class EmployeesListener extends AnalysisEventListener<EmployeesEntity> {


    /**
     * 這個每一條數據解析都會來調用
     *
     * @param data
     *            one row value. Is is same as {@link AnalysisContext#readRowHolder()}
     * @param context
     */
    @Override
    public void invoke(EmployeesEntity data, AnalysisContext context) {
        System.out.println("解析到一條數據:"+JSON.toJSONString(data));
    }

    /**
     * 所有數據解析完成了 都會來調用
     *
     * @param context
     */
    @Override
    public void doAfterAllAnalysed(AnalysisContext context) {

    }


}

    @Test
    public void get(){
        File file = new File("./src/main/resources/大客戶部-薪酬表.xlsx");
        String absolutePath = file.getAbsolutePath();
//        // 這里 需要指定讀用哪個class去讀，然后讀取第一個sheet 文件流會自動關閉
        EasyExcel.read(absolutePath, EmployeesEntity.class, new EmployeesListener()).sheet().doRead();

    }

@Data
public class DemoData {
    @ExcelProperty("字符串標題")
    private String string;
    @ExcelProperty("日期標題")
    private Date date;
    @ExcelProperty("數字標題")
    private Double doubleData;
    /**
     * 忽略這個字段
     */
    @ExcelIgnore
    private String ignore;
}

//生成模擬數據
    private List<DemoData> data() {
        List<DemoData> list = new ArrayList<DemoData>();
        for (int i = 0; i < 10; i++) {
            DemoData data = new DemoData();
            data.setString("字符串" + i);
            data.setDate(new Date());
            data.setDoubleData(0.56);
            list.add(data);
        }
        return list;
    }

    /**
     * 最簡單的寫
     * <p>1. 創(chuàng)建excel對應的實體對象 參照{@link DemoData}
     * <p>2. 直接寫即可
     */
    @Test
    public void simpleWrite() {
        // 寫
        File file = new File("./src/main/resources/DemoData.xlsx");
        // 這里 需要指定寫用哪個class去寫，然后寫到第一個sheet，名字為模板 然后文件流會自動關閉
        // 如果這里想使用03 則 傳入excelType參數即可
        EasyExcel.write(file.getAbsolutePath(), DemoData.class).sheet("DemoData").doWrite(data());

    }

@Data
public class FillData {
    private String name;
    private double number;
}

    @Test
    public void simpleFill() {
        // 模板注意 用{} 來表示你要用的變量 如果本來就有"{","}" 特殊字符 用"\{","\}"代替
        File templateFileName  = new File("./src/main/resources/模板.xlsx");

        File fill  = new File("./src/main/resources/fillData.xlsx");
        // 這里 會填充到第一個sheet， 然后文件流會自動關閉
        FillData fillData = new FillData();
        fillData.setName("張三");
        fillData.setNumber(5.2);
        EasyExcel.write(fill.getAbsolutePath()).withTemplate(templateFileName.getAbsolutePath()).sheet().doFill(fillData);

    }