java easyPOI实现导出一对多数据
java easyPOI导出一对多数据,设置边框,字体,字体大小
需求总是千奇百怪,解决的方式也可以是多种多样。
今天碰到导出excel是一对多结构的,以往导出的数据都是一条一条的,所以采用的是比较方便简单的方法easyExcel,今天猛然碰到一对多导出虽然用easyExcel也可以,但是相对比较麻烦,没有easyPOI快捷,之前有自己写过导出excel一个表格一个表格画,但是太麻烦。今天正好需求不急,就慢慢研究用easypoi导出,写出通用方法,以后遇到类似的就好办多了,直接调方法。废话不多说,先上效果图:
首先是实体中设置:
public class YjwzStockInVO extends TYjwzStockIn implements Serializable { //注意:needMerge = true 必加,不然合并的单元格,边框不会合并,需要导出的实体加@Excel注解,不需要导出的字段加@ExcelIgnore注解排除 @Excel(needMerge = true,name = "状态名称") @ApiModelProperty(value = "状态名称") private String ztmc; @Excel(needMerge = true,name = "一级品类") @ApiModelProperty(value = "一级物资名称") private String wzOnemc; @Excel(needMerge = true,name = "二级品类") @ApiModelProperty(value = "二级物资名称") private String wzTwomc; @Excel(needMerge = true,name = "三级品类") @ApiModelProperty(value = "三级物资名称") private String wzThreemc; @Excel(needMerge = true,name = "四级品类") @ApiModelProperty(value = "四级物资名称") private String wzRourmc; @Excel(needMerge = true,name = "数据来源") @ApiModelProperty(value = "数据来源:1:市应急平台,2:人工新增") @DataBindDict(sourceField = "#sjly", sourceFieldCombination = "sjly") private String sjlymc; @ExcelCollection(name = "应急物资明细") @ApiModelProperty(value = "应急物资详情") private List<YjwzStockInDtlVO> dtlList; }
子类:
public class YjwzStockInDtlVO extends TYjwzStockInDtl implements Serializable { @Excel(name = "单据类型") @ApiModelProperty(value = "单据类型:1:采购入库,2:调拨入库") @DataBindDict(sourceField = "#djlx", sourceFieldCombination = "lx") private String djlxmc; @Excel(name = "入库质检") @ApiModelProperty(value = "入库质检:1:已检验入库,2:未检验入库") @DataBindDict(sourceField = "#rkzj", sourceFieldCombination = "zjlx") private String rkzjmc; @Excel(name = "质检结果") @ApiModelProperty(value = "质检结果:1:合格,2:不合格") @DataBindDict(sourceField = "#zjjg", sourceFieldCombination = "zjjg") private String zjjgmc; @Excel(name = "存储期单位") @ApiModelProperty(value = "存储期单位:1:年,2:月") @DataBindDict(sourceField = "#ccqdw", sourceFieldCombination = "ccqdw") private String ccqdwmc; }
然后是工具类准备:
1)首先是设置字体样式的工具类:
package com.sydata.zt.common.excel; import cn.afterturn.easypoi.excel.entity.params.ExcelExportEntity; import cn.afterturn.easypoi.excel.entity.params.ExcelForEachParams; import cn.afterturn.easypoi.excel.export.styler.IExcelExportStyler; import org.apache.poi.ss.usermodel.*; /** * @Author xx * @Date 2023/12/5 17:37 * @Description: poi导出excel样式设置工具 * @Version 1.0 */ public class ExcelStyleUtil implements IExcelExportStyler { private static final short STRING_FORMAT = (short) BuiltinFormats.getBuiltinFormat("TEXT"); private static final short FONT_SIZE_TEN = 9; private static final short FONT_SIZE_ELEVEN = 10; private static final short FONT_SIZE_TWELVE = 10; /** * 大标题样式 */ private CellStyle headerStyle; /** * 每列标题样式 */ private CellStyle titleStyle; /** * 数据行样式 */ private CellStyle styles; public ExcelStyleUtil(Workbook workbook){ this.init(workbook); } /** * 初始化样式 * @param workbook */ private void init(Workbook workbook) { this.headerStyle = initHeaderStyle(workbook); this.titleStyle = initTitleStyle(workbook); this.styles = initStyles(workbook); } /** * 初始化大标题样式 * * @param workbook * @return */ private CellStyle initHeaderStyle(Workbook workbook) { CellStyle style = getBaseCellStyle(workbook); style.setFont(getFont(workbook,FONT_SIZE_ELEVEN,Boolean.TRUE)); return style; } /** * 初始化小标题样式 * @param workbook * @return */ private CellStyle initTitleStyle(Workbook workbook) { CellStyle style = getBaseCellStyle(workbook); style.setFont(getFont(workbook,FONT_SIZE_ELEVEN,Boolean.TRUE)); return style; } /** * 数据行样式 * @param workbook * @return */ private CellStyle initStyles(Workbook workbook) { CellStyle style = getBaseCellStyle(workbook); style.setDataFormat(STRING_FORMAT); return style; } /** * 大标题样式 * @param color * @return */ @Override public CellStyle getHeaderStyle(short color) { return headerStyle; } /** * 每列标题样式 * @param color * @return */ @Override public CellStyle getTitleStyle(short color) { return titleStyle; } /** * 数据行样式 * @param b * @param excelExportEntity * @return */ @Override public CellStyle getStyles(boolean b, ExcelExportEntity excelExportEntity) { return styles; } /** * 获取行样式方法 * @param cell * @param i * @param entity * @param o * @param o1 * @return */ @Override public CellStyle getStyles(Cell cell, int i, ExcelExportEntity entity, Object o, Object o1) { return getStyles(true,entity); } @Override public CellStyle getTemplateStyles(boolean b, ExcelForEachParams excelForEachParams) { return null; } /** * 基础样式 * @param workbook * @return */ private CellStyle getBaseCellStyle(Workbook workbook) { CellStyle style = workbook.createCellStyle(); //下边框 style.setBorderBottom(BorderStyle.THIN); //左边框 style.setBorderLeft(BorderStyle.THIN); //右边框 style.setBorderRight(BorderStyle.THIN); //上边框 style.setBorderTop(BorderStyle.THIN); //水平居中 style.setAlignment(HorizontalAlignment.CENTER); //上下居中 style.setVerticalAlignment(VerticalAlignment.CENTER); //设置自动换行 style.setWrapText(Boolean.TRUE); return style; } /** * 字体样式 * @param workbook * @param size * @param isBold * @return */ private Font getFont(Workbook workbook,short size,boolean isBold){ Font font = workbook.createFont(); //字体大小 font.setFontHeightInPoints(size); //字体是否加粗 font.setBold(isBold); //设置字体 // font.setFontName(""); return font; } }
2)然后导出excel工具类
package com.sydata.zt.common.excel; import cn.afterturn.easypoi.excel.ExcelExportUtil; import cn.afterturn.easypoi.excel.entity.ExportParams; import cn.afterturn.easypoi.excel.entity.enmus.ExcelType; import com.alibaba.excel.util.ListUtils; import com.alibaba.excel.write.metadata.style.WriteCellStyle; import com.alibaba.excel.write.metadata.style.WriteFont; import com.alibaba.excel.write.style.HorizontalCellStyleStrategy; import org.apache.commons.lang3.StringUtils; import org.apache.poi.ss.formula.functions.T; import org.apache.poi.ss.usermodel.BorderStyle; import org.apache.poi.ss.usermodel.HorizontalAlignment; import org.apache.poi.ss.usermodel.VerticalAlignment; import org.apache.poi.ss.usermodel.Workbook; import org.springframework.util.CollectionUtils; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.lang.reflect.Method; import java.net.URLEncoder; import java.util.*; /** * @author hm * @date 2023/3/14 17:33 */ public class EasyExcelGeneralUtil { /** * 设置response编码 */ public static void setResponseContentType(HttpServletResponse response, String fileName) throws UnsupportedEncodingException { response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); response.setCharacterEncoding("utf-8"); response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "utf-8") + ".xlsx"); response.setHeader("Access-Control-Expose-Headers", "Content-Disposition"); } public static void exportExcelByEasyPoi(HttpServletResponse response, String fileName, List<Object> vos, Class<?> classType) throws IOException { ExportParams exportParams = new ExportParams(); // 设置sheet得名称 exportParams.setSheetName(fileName); //设置边框,字体,字体大小 exportParams.setStyle(ExcelStyleUtil.class); Map<String, Object> map = new HashMap<>(); // title的参数为ExportParams类型,目前仅仅在ExportParams中设置了sheetName map.put("title", exportParams); // 模版导出对应得实体类型的class文件 map.put("entity", classType); // sheet中要填充得数据 map.put("data", vos); List<Map<String, Object>> sheetsList = new ArrayList<>(); sheetsList.add(map); //创建excel文件的方法 Workbook workbook = ExcelExportUtil.exportExcel(sheetsList, ExcelType.HSSF); //通过response输出流直接输入给客户端 ServletOutputStream outputStream = response.getOutputStream(); workbook.write(outputStream); outputStream.flush(); outputStream.close(); } }
准备工作已完成,接下来就可以愉快的导出了:
@SneakyThrows @PostMapping("/export") @ApiOperation(value = "导出") public void export(HttpServletRequest request, HttpServletResponse response,@RequestBody YjwzStockInDTO yjwzStockInDTO){ request.getSession(); String fileName = "文件名称"; EasyExcelGeneralUtil.setResponseContentType(response,fileName); //设置的分页最多能导出10000条数据 yjwzStockInDTO.setPageNum(1); yjwzStockInDTO.setPageSize(10000); //查库得到需要导出的数据 List<Object> vos = (List<Object>) stockInService.page(yjwzStockInDTO).getRows(); EasyExcelGeneralUtil.exportExcelByEasyPoi(response,fileName,vos,YjwzStockInVO.class); }
好了,完整的过程就是这样了,直接掉接口导出就可以了。
以上就是java easyPOI实现导出一对多数据的详细内容,更多关于java easyPOI导出数据的资料请关注脚本之家其它相关文章!
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