SpringBoot中怎么利用easyexcel导出Excel
今天就跟大家聊聊有关SpringBoot中怎么利用easyexcel导出Excel,可能很多人都不太了解,为了让大家更加了解,小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。
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首先我们创建一个springboot(版本是 2.1.4.RELEASE)项目,在此就不过多的啰嗦,创建好之后,首先需要引入easyexcel的maven坐标。
com.alibaba easyexcel 1.1.2-beta5
导入好了之后,我们接下来需要创建一个导出的模板类,首先要集成BaseRowModel,set、get省略,@ExcelProperty注解中的value就是表头的信息,index是在第几列,没有加注解的不会导出。
public class OrderExcelBO extends BaseRowModel { @ExcelProperty(value = {"订单ID"}, index = 0) private String id; /** * 订单描述 */ @ExcelProperty(value = {"订单描述"}, index = 2) private String description; /** * 订单对应产品id */ @ExcelProperty(value = {"产品ID"}, index = 2) private Integer productId; /** * 支付方式描述,如:apple pay */ @ExcelProperty(value = {"支付方式"}, index = 3) private String payMethod; /** * create_time */ @ExcelProperty(value = {"时间"}, index = 4) private String createTime; /** * update_time */ private String updateTime; /** * 产生订单的用户 */ @ExcelProperty(value = {"用户ID"}, index = 5) private Integer userId; /** * 支付状态:0 未支付、1支付成功支付完成、-1支付失败 */ @ExcelProperty(value = {"支付状态"}, index = 6) private String status; /** * 订单来源描述,如:ios 安卓 */ @ExcelProperty(value = {"手机型号"}, index = 7) private String platform; /** * 订单流水 */ @ExcelProperty(value = {"订单流水号"}, index = 8) private String flowNum; /** * 订单金额 */ @ExcelProperty(value = {"金额"}, index = 9) private BigDecimal price; // @ExcelProperty(value = {"收据字段"}, index = 10) private String receipt; @ExcelProperty(value = {"APP来源"}, index = 10) private String sources; }
导出的模板定义好之后,接下来就是一些封装好的工具类的调用
查出我们需要导出的数据;
生成Excel文件名和sheet名称;
直接调用封装好的工具类导出文件即可;
我们来看下导出的效果
如果你的表头比较复杂,那么根据需求,你也可自行定义,例如如下这种复杂的表头,应该如何设置
首先要修改模板类,如果合并的单元格最大为2,那么所有的表格都需要设置为2,不合并的单元格用空字符串填充,需要合并的单元格将合并部分写上相同的名称,并且排列的序号要连续,不能分开。
我们来看下导出的效果,这样就可以满足我们平时开发需要的excel导出功能。简单易上手。
工具类:
import com.alibaba.excel.context.AnalysisContext; import com.alibaba.excel.event.AnalysisEventListener; import java.util.ArrayList; import java.util.List; public class ExcelListener extends AnalysisEventListener { /** * 自定义用于暂时存储data。 * 可以通过实例获取该值 */ private List
import com.alibaba.excel.ExcelReader; import com.alibaba.excel.ExcelWriter; import com.alibaba.excel.metadata.BaseRowModel; import com.alibaba.excel.metadata.Font; import com.alibaba.excel.metadata.Sheet; import com.alibaba.excel.metadata.TableStyle; import com.alibaba.excel.support.ExcelTypeEnum; import com.mochu.exception.ExcelException; import org.apache.poi.poifs.filesystem.FileMagic; import org.apache.poi.ss.usermodel.IndexedColors; import org.springframework.web.multipart.MultipartFile; import javax.servlet.http.HttpServletResponse; import java.io.BufferedInputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.List; public class ExcelUtil { /** * 读取 Excel(多个 sheet) * * @param excel 文件 * @param rowModel 实体类映射,继承 BaseRowModel 类 * @return Excel 数据 list */ public static ListreadExcel(MultipartFile excel, BaseRowModel rowModel) { ExcelListener excelListener = new ExcelListener(); ExcelReader reader = getReader(excel, excelListener); if (reader == null) { return null; } for (Sheet sheet : reader.getSheets()) { if (rowModel != null) { sheet.setClazz(rowModel.getClass()); } reader.read(sheet); } return excelListener.getDatas(); } /** * 读取某个 sheet 的 Excel * * @param excel 文件 * @param rowModel 实体类映射,继承 BaseRowModel 类 * @param sheetNo sheet 的序号 从1开始 * @return Excel 数据 list */ public static List readExcel(MultipartFile excel, BaseRowModel rowModel, int sheetNo) { return readExcel(excel, rowModel, sheetNo, 1); } /** * 读取某个 sheet 的 Excel * * @param excel 文件 * @param rowModel 实体类映射,继承 BaseRowModel 类 * @param sheetNo sheet 的序号 从1开始 * @param headLineNum 表头行数,默认为1 * @return Excel 数据 list */ public static List readExcel(MultipartFile excel, BaseRowModel rowModel, int sheetNo, int headLineNum) { ExcelListener excelListener = new ExcelListener(); ExcelReader reader = getReader(excel, excelListener); if (reader == null) { return null; } reader.read(new Sheet(sheetNo, headLineNum, rowModel.getClass())); return excelListener.getDatas(); } /** * 导出 Excel :一个 sheet,带表头 * * @param response HttpServletResponse * @param list 数据 list,每个元素为一个 BaseRowModel * @param fileName 导出的文件名 * @param sheetName 导入文件的 sheet 名 * @param object 映射实体类,Excel 模型 */ public static void writeExcel(HttpServletResponse response, List extends BaseRowModel> list, String fileName, String sheetName, BaseRowModel object) { ExcelWriter writer = new ExcelWriter(getOutputStream(fileName, response), ExcelTypeEnum.XLSX); Sheet sheet = new Sheet(1, 0, object.getClass()); sheet.setSheetName(sheetName); TableStyle tableStyle = new TableStyle(); tableStyle.setTableContentBackGroundColor(IndexedColors.WHITE); Font font = new Font(); font.setFontHeightInPoints((short) 9); tableStyle.setTableHeadFont(font); tableStyle.setTableContentFont(font); sheet.setTableStyle(tableStyle); writer.write(list, sheet); writer.finish(); } /** * 导出 Excel :多个 sheet,带表头 * * @param response HttpServletResponse * @param list 数据 list,每个元素为一个 BaseRowModel * @param fileName 导出的文件名 * @param sheetName 导入文件的 sheet 名 * @param object 映射实体类,Excel 模型 */ public static ExcelWriterFactory writeExcelWithSheets(HttpServletResponse response, List extends BaseRowModel> list, String fileName, String sheetName, BaseRowModel object) { ExcelWriterFactory writer = new ExcelWriterFactory(getOutputStream(fileName, response), ExcelTypeEnum.XLSX); Sheet sheet = new Sheet(1, 0, object.getClass()); sheet.setSheetName(sheetName); sheet.setTableStyle(getTableStyle()); writer.write(list, sheet); return writer; } /** * 导出融资还款情况表 * * @param response * @param list * @param fileName * @param sheetName * @param object */ public static void writeFinanceRepayment(HttpServletResponse response, List extends BaseRowModel> list, String fileName, String sheetName, BaseRowModel object) { ExcelWriter writer = new ExcelWriter(getOutputStream(fileName, response), ExcelTypeEnum.XLSX); Sheet sheet = new Sheet(1, 0, object.getClass()); sheet.setSheetName(sheetName); sheet.setTableStyle(getTableStyle()); writer.write(list, sheet); for (int i = 1; i <= list.size(); i += 4) { writer.merge(i, i + 3, 0, 0); writer.merge(i, i + 3, 1, 1); } writer.finish(); } /** * 导出文件时为Writer生成OutputStream */ private static OutputStream getOutputStream(String fileName, HttpServletResponse response) { //创建本地文件 fileName = fileName + ".xls"; try { fileName = new String(fileName.getBytes(), "ISO-8859-1"); response.addHeader("Content-Disposition", "filename=">
import com.alibaba.excel.ExcelWriter; import com.alibaba.excel.metadata.BaseRowModel; import com.alibaba.excel.metadata.Sheet; import com.alibaba.excel.support.ExcelTypeEnum; import java.io.IOException; import java.io.OutputStream; import java.util.List; public class ExcelWriterFactory extends ExcelWriter { private OutputStream outputStream; private int sheetNo = 1; public ExcelWriterFactory(OutputStream outputStream, ExcelTypeEnum typeEnum) { super(outputStream, typeEnum); this.outputStream = outputStream; } public ExcelWriterFactory write(List extends BaseRowModel> list, String sheetName, BaseRowModel object) { this.sheetNo++; try { Sheet sheet = new Sheet(sheetNo, 0, object.getClass()); sheet.setSheetName(sheetName); this.write(list, sheet); } catch(Exception ex) { ex.printStackTrace(); try { outputStream.flush(); } catch(IOException e) { e.printStackTrace(); } } return this; } @Override public void finish() { super.finish(); try { outputStream.flush(); } catch(IOException e) { e.printStackTrace(); } } }
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文章标题:SpringBoot中怎么利用easyexcel导出Excel
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