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1. 需求简介
读取下面表格数据 第一行和第二行是计划信息 第三行是计划详情的抬头信息,以下行是计划详情信息 总段包含多个分段,总段使用了单元格合并功能
2. 实现读取功能
2.1 引入easyexcel依赖 dependencygroupIdcom.alibaba/groupId…官网
1. 需求简介
读取下面表格数据 第一行和第二行是计划信息 第三行是计划详情的抬头信息,以下行是计划详情信息 总段包含多个分段,总段使用了单元格合并功能
2. 实现读取功能
2.1 引入easyexcel依赖 dependencygroupIdcom.alibaba/groupIdartifactIdeasyexcel/artifactIdversion3.1.0/version/dependency2.2 创建计划详情行信息对象
package com.gkdz.server.modules.shipyard.domain;import com.alibaba.excel.annotation.ExcelIgnore;
import com.alibaba.excel.annotation.ExcelProperty;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.Setter;import java.util.Date;Getter
Setter
EqualsAndHashCode
public class Summary {ExcelProperty(value 序号, index 0)private String number;ExcelProperty(value 总段, index 1)private String totalSection;ExcelProperty(value 分段, index 2)private String subSection;ExcelProperty(value 分段预估重量(T), index 3)private Double subExpectWeight;ExcelProperty(value 长, index 4)private Double length;ExcelProperty(value 宽, index 5)private Double width;ExcelProperty(value 高, index 6)private Double height;ExcelProperty(value 分段类型, index 7)private String type;ExcelProperty(value 总段预估重量(T, index 8)private Double totalExpectWeight;ExcelProperty(value 分段交付时间, index 9)private String subSectionDeliveryTime;ExcelProperty(value 总组吊装日期, index 10)private String hoistDate;ExcelProperty(value 总组焊前, index 11)private String totalBeWeldDate;ExcelProperty(value 总组焊前周期, index 12)private String totalBeWeldCycle;ExcelProperty(value 总组完工日期, index 13)private String totalCompletionDate;ExcelProperty(value 总组完工周期, index 14)private String totalCompletionCycle;ExcelProperty(value 搭载吊装日期, index 15)private String carryLiftDate;ExcelProperty(value 搭载焊前日期, index 16)private String carryBeWeldDate;ExcelProperty(value 搭载焊前周期, index 17)private String carryBeWeldCycle;ExcelProperty(value 搭载完工日期, index 18)private String carryCompletionDate;ExcelProperty(value 搭载完工周期, index 19)private String carryCompletionCycle;ExcelProperty(value 吊装顺序, index 20)private String hoistOrder;ExcelProperty(value 封舱设备, index 21)private String sealingEquipment;ExcelProperty(value 备注, index 22)private String remark;//标记,用于分组,ExcelIgnore为忽略注解ExcelIgnoreprivate String elementStr;/**行号*/ExcelIgnoreprivate int rowNo;
}
2.3 读取execl工具类
package com.gkdz.server.modules.shipyard.util;import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.enums.CellExtraTypeEnum;
import com.alibaba.excel.metadata.CellExtra;
import com.alibaba.excel.metadata.data.ReadCellData;
import com.alibaba.excel.read.listener.ReadListener;
import com.alibaba.fastjson.JSON;
import com.gkdz.server.modules.shipyard.domain.Summary;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.multipart.MultipartFile;import java.io.IOException;
import java.lang.reflect.Field;
import java.math.BigDecimal;
import java.util.*;Slf4j
public class EasyExcelUtil {/*** 计划详情正文起始行*/private static final Integer headRowNumber 3;/*** 分组切割符号*/public static final String splitFlag zld;public static MapString, List uploadByFile(MultipartFile file) throws IOException {MapString, List map new HashMap();//正文行数据ListSummary saveList new ArrayList();//抬头行数据ListString planInfoList new ArrayList();//合并单元格数据ListCellExtra extraMergeInfoList new ArrayList();EasyExcel.read(file.getInputStream(), Summary.class, new ReadListenerSummary() {/*** 读取表格抬头行数据,默认为读第一行;* 可设置headRowNumber(headRowNumber):抬头行为前headRowNumber行* param headMap* param context*/Overridepublic void invokeHead(MapInteger, ReadCellData? headMap, AnalysisContext context) {planInfoList.add(headMap.get(0).getStringValue());}/*** 读取非抬头行数据* param data 行数据格式,自定义,默认为Object* param analysisContext*/Overridepublic void invoke(Summary data, AnalysisContext analysisContext) {if (StrUtil.isEmptyIfStr(data.getTotalSection())) {data.setTotalSection(data.getSubSection());}saveList.add(data);}/**** param extra* param context*/Overridepublic void extra(CellExtra extra, AnalysisContext context) {log.info(读取到了一条额外信息:{}, JSON.toJSONString(extra));switch (extra.getType()) {case COMMENT: {log.info(额外信息是批注,在rowIndex:{},columnIndex;{},内容是:{}, extra.getRowIndex(), extra.getColumnIndex(),extra.getText());break;}case HYPERLINK: {if (Sheet1!A1.equals(extra.getText())) {log.info(额外信息是超链接,在rowIndex:{},columnIndex;{},内容是:{}, extra.getRowIndex(),extra.getColumnIndex(), extra.getText());} else if (Sheet2!A1.equals(extra.getText())) {log.info(额外信息是超链接,而且覆盖了一个区间,在firstRowIndex:{},firstColumnIndex;{},lastRowIndex:{},lastColumnIndex:{}, 内容是:{},extra.getFirstRowIndex(), extra.getFirstColumnIndex(), extra.getLastRowIndex(),extra.getLastColumnIndex(), extra.getText());} else {log.error(Unknown hyperlink!);}break;}case MERGE: {if (extra.getRowIndex() headRowNumber) {extraMergeInfoList.add(extra);}break;}default: {}}}/*** 数据读取完毕后执行的方法,可做数据整体处理* param analysisContext*/Overridepublic void doAfterAllAnalysed(AnalysisContext analysisContext) {}}).extraRead(CellExtraTypeEnum.MERGE).sheet().headRowNumber(headRowNumber).doRead();final ListSummary summaries ExcelSplitUtil.explainMergeData(saveList, extraMergeInfoList, headRowNumber);map.put(planInfo, planInfoList);map.put(summary, summaries);return map;}/*** 根据easyexcel注解给指定实体赋值** param objects 读取的表格内容* param clazz 需转化的实体* param T 实体* return 需转化的提示集合*/public static T ListT convertList(ListLinkedHashMap objects, ClassT clazz) {ListT results new ArrayList(objects.size());try {MapString, Field objIndex new HashMap();// 获取转化实体字段信息集合Field[] fields clazz.getDeclaredFields();for (Field field : fields) {// 根据实体上Easy Excel的ExcelProperty注解中的索引值对应excel读取数据的值int index field.getAnnotation(ExcelProperty.class).index();// 设置字段可编辑field.setAccessible(true);objIndex.put(String.valueOf(index), field);}T obj null;for (LinkedHashMap o : objects) {obj clazz.newInstance();for (Object key : o.keySet()) {// 如果表格索引与字段注解指定索引一样则赋值if (objIndex.containsKey(key)) {Object object o.get(key);Object value null;Field field objIndex.get(key);if (ObjectUtil.isEmpty(object)) {continue;}Class? type field.getType();String replace object.toString();// 有特殊需要处理的字段类型则在此进行处理if (type BigDecimal.class) {value --.equals(replace) ? null : new BigDecimal(replace.replace(,, ));} else if (type Integer.class) {// String强转Integer会报错所以需要单独进行转化value --.equals(replace) ? null : Integer.valueOf(replace.replace(,, ));} else {value object;}field.set(obj, value);}}results.add(obj);}} catch (Exception e) {log.error(字段解析失败, e);}return results;}
}2.4 拆分单元格工具
package com.gkdz.server.modules.shipyard.util;import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.metadata.CellExtra;
import com.gkdz.server.modules.shipyard.domain.Summary;
import lombok.extern.slf4j.Slf4j;import java.lang.reflect.Field;
import java.util.List;/*** description拆分单元格数据*/
Slf4j
public class ExcelSplitUtil {/*** 处理合并单元格** param data 解析数据* param extraMergeInfoList 合并单元格信息* param headRowNumber 起始行* return 填充好的解析数据*/public static ListSummary explainMergeData(ListSummary data, ListCellExtra extraMergeInfoList, Integer headRowNumber) {
// 循环所有合并单元格信息extraMergeInfoList.forEach(cellExtra - {int firstRowIndex cellExtra.getFirstRowIndex() - headRowNumber;int lastRowIndex cellExtra.getLastRowIndex() - headRowNumber;int firstColumnIndex cellExtra.getFirstColumnIndex();int lastColumnIndex cellExtra.getLastColumnIndex();
// 获取初始值Object initValue getInitValueFromList(firstRowIndex, firstColumnIndex, data);
// 设置值for (int i firstRowIndex; i lastRowIndex; i) {for (int j firstColumnIndex; j lastColumnIndex; j) {setInitValueToList(initValue, i, j, data);}}});return data;}/*** 设置合并单元格的值** param filedValue 值* param rowIndex 行* param columnIndex 列* param data 解析数据*/private static void setInitValueToList(Object filedValue, Integer rowIndex, Integer columnIndex, ListSummary data) {Summary object data.get(rowIndex);for (Field field : object.getClass().getDeclaredFields()) {//提升反射性能关闭安全检查field.setAccessible(true);ExcelProperty annotation field.getAnnotation(ExcelProperty.class);if (annotation ! null) {if (annotation.index() columnIndex) {try {field.set(object, filedValue);break;} catch (IllegalAccessException e) {log.error(解析数据时发生异常!);}}}}}/*** 获取合并单元格的初始值* rowIndex对应list的索引* columnIndex对应实体内的字段** param firstRowIndex 起始行* param firstColumnIndex 起始列* param data 列数据* return 初始值*/private static Object getInitValueFromList(Integer firstRowIndex, Integer firstColumnIndex, ListSummary data) {Object filedValue null;Summary object data.get(firstRowIndex);for (Field field : object.getClass().getDeclaredFields()) {//提升反射性能关闭安全检查field.setAccessible(true);ExcelProperty annotation field.getAnnotation(ExcelProperty.class);if (annotation ! null) {if (annotation.index() firstColumnIndex) {try {filedValue field.get(object);break;} catch (IllegalAccessException e) {log.error(解析数据时发生异常!);}}}}return filedValue;}
}
