easyExcel实战：（三）easyExcel写Excel的解读

每行数据是List无表头

  OutputStream out = new FileOutputStream("/Users/jipengfei/77.xlsx");
        try {
            ExcelWriter writer = new ExcelWriter(out, ExcelTypeEnum.XLSX,false);
            //写第一个sheet, sheet1  数据全是List 无模型映射关系
            Sheet sheet1 = new Sheet(1, 0);
            sheet1.setSheetName("第一个sheet");
            writer.write(getListString(), sheet1);
            writer.finish();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                out.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

每行数据是一个java模型有表头----表头层级为一

生成Excel格式如下图 

模型写法如下：

public class ExcelPropertyIndexModel extends BaseRowModel {

    @ExcelProperty(value = "姓名" ,index = 0)
    private String name;

    @ExcelProperty(value = "年龄",index = 1)
    private String age;

    @ExcelProperty(value = "邮箱",index = 2)
    private String email;

    @ExcelProperty(value = "地址",index = 3)
    private String address;

    @ExcelProperty(value = "性别",index = 4)
    private String sax;

    @ExcelProperty(value = "高度",index = 5)
    private String heigh;

    @ExcelProperty(value = "备注",index = 6)
    private String last;
}

@ExcelProperty(value = "姓名",index = 0) value是表头数据，默认会写在excel的表头位置，index代表第几列。

 @Test
    public void test1() throws FileNotFoundException {
        OutputStream out = new FileOutputStream("/Users/jipengfei/78.xlsx");
        try {
            ExcelWriter writer = new ExcelWriter(out, ExcelTypeEnum.XLSX);
            //写第一个sheet, sheet1  数据全是List 无模型映射关系
            Sheet sheet1 = new Sheet(1, 0,ExcelPropertyIndexModel.class);
            writer.write(getData(), sheet1);
            writer.finish();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                out.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

每行数据是一个java模型有表头----表头层级为多层级

生成Excel格式如下图： java模型写法如下：

public class MultiLineHeadExcelModel extends BaseRowModel {

    @ExcelProperty(value = {"表头1","表头1","表头31"},index = 0)
    private String p1;

    @ExcelProperty(value = {"表头1","表头1","表头32"},index = 1)
    private String p2;

    @ExcelProperty(value = {"表头3","表头3","表头3"},index = 2)
    private int p3;

    @ExcelProperty(value = {"表头4","表头4","表头4"},index = 3)
    private long p4;

    @ExcelProperty(value = {"表头5","表头51","表头52"},index = 4)
    private String p5;

    @ExcelProperty(value = {"表头6","表头61","表头611"},index = 5)
    private String p6;

    @ExcelProperty(value = {"表头6","表头61","表头612"},index = 6)
    private String p7;

    @ExcelProperty(value = {"表头6","表头62","表头621"},index = 7)
    private String p8;

    @ExcelProperty(value = {"表头6","表头62","表头622"},index = 8)
    private String p9;
}

写Excel写法同上，只需将ExcelPropertyIndexModel.class改为MultiLineHeadExcelModel.class

一个Excel多个sheet写法

 @Test
    public void test1() throws FileNotFoundException {

        OutputStream out = new FileOutputStream("/Users/jipengfei/77.xlsx");
        try {
            ExcelWriter writer = new ExcelWriter(out, ExcelTypeEnum.XLSX,false);
            //写第一个sheet, sheet1  数据全是List 无模型映射关系
            Sheet sheet1 = new Sheet(1, 0);
            sheet1.setSheetName("第一个sheet");
            writer.write(getListString(), sheet1);

            //写第二个sheet sheet2  模型上打有表头的注解，合并单元格
            Sheet sheet2 = new Sheet(2, 3, MultiLineHeadExcelModel.class, "第二个sheet", null);
            sheet2.setTableStyle(getTableStyle1());
            writer.write(getModeldatas(), sheet2);

            //写sheet3  模型上没有注解，表头数据动态传入
            List> head = new ArrayList>();
            List headCoulumn1 = new ArrayList();
            List headCoulumn2 = new ArrayList();
            List headCoulumn3 = new ArrayList();
            headCoulumn1.add("第一列");
            headCoulumn2.add("第二列");
            headCoulumn3.add("第三列");
            head.add(headCoulumn1);
            head.add(headCoulumn2);
            head.add(headCoulumn3);
            Sheet sheet3 = new Sheet(3, 1, NoAnnModel.class, "第三个sheet", head);
            writer.write(getNoAnnModels(), sheet3);
            writer.finish();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                out.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

一个sheet中有多个表格

@Test
    public void test2() throws FileNotFoundException {
        OutputStream out = new FileOutputStream("/Users/jipengfei/77.xlsx");
        try {
            ExcelWriter writer = new ExcelWriter(out, ExcelTypeEnum.XLSX,false);

            //写sheet1  数据全是List 无模型映射关系
            Sheet sheet1 = new Sheet(1, 0);
            sheet1.setSheetName("第一个sheet");
            Table table1 = new Table(1);
            writer.write(getListString(), sheet1, table1);
            writer.write(getListString(), sheet1, table1);

            //写sheet2  模型上打有表头的注解
            Table table2 = new Table(2);
            table2.setTableStyle(getTableStyle1());
            table2.setClazz(MultiLineHeadExcelModel.class);
            writer.write(getModeldatas(), sheet1, table2);

            //写sheet3  模型上没有注解，表头数据动态传入,此情况下模型field顺序与excel现实顺序一致
            List> head = new ArrayList>();
            List headCoulumn1 = new ArrayList();
            List headCoulumn2 = new ArrayList();
            List headCoulumn3 = new ArrayList();
            headCoulumn1.add("第一列");
            headCoulumn2.add("第二列");
            headCoulumn3.add("第三列");
            head.add(headCoulumn1);
            head.add(headCoulumn2);
            head.add(headCoulumn3);
            Table table3 = new Table(3);
            table3.setHead(head);
            table3.setClazz(NoAnnModel.class);
            table3.setTableStyle(getTableStyle2());
            writer.write(getNoAnnModels(), sheet1, table3);
            writer.write(getNoAnnModels(), sheet1, table3);

            writer.finish();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                out.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }