package com.vincent.rsf.server.common.utils;
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import cn.afterturn.easypoi.excel.annotation.Excel;
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import cn.afterturn.easypoi.excel.entity.ImportParams;
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import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
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import com.vincent.rsf.framework.common.Cools;
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import com.vincent.rsf.framework.common.SpringUtils;
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import com.vincent.rsf.server.manager.entity.excel.MatnrsTemplate;
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import com.vincent.rsf.server.manager.entity.excel.annotation.ExcelComment;
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import com.vincent.rsf.server.system.entity.Fields;
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import com.vincent.rsf.server.system.service.FieldsService;
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import io.swagger.annotations.ApiModelProperty;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.poi.hssf.usermodel.HSSFWorkbook;
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import org.apache.poi.ss.usermodel.*;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.lang.reflect.Field;
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import java.lang.reflect.Modifier;
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import java.net.URLEncoder;
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import java.text.SimpleDateFormat;
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import java.util.*;
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/**
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* Created by vincent on 2/17/2024
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*/
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@Slf4j
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public class ExcelUtil {
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public static void build(Workbook workbook, HttpServletResponse response) {
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response.reset();
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Http.cors(response);
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response.setContentType("application/octet-stream; charset=utf-8");
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try {
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response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode("export", "UTF-8"));
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workbook.write(response.getOutputStream());
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} catch (IOException ignore) {
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}
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}
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public static <T> Workbook create(List<T> list, Class<T> clz) {
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return create(list, clz, false);
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}
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public static <T> Workbook create(List<T> list, Class<T> clz, boolean flagTemplate) {
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HSSFWorkbook workbook = new HSSFWorkbook();
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Sheet sheet = workbook.createSheet(clz.getSimpleName());
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Row header = sheet.createRow(0);
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Field[] fields = Cools.getAllFields(clz);
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int headerIdx = 0;
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FieldsService itemService = SpringUtils.getBean(FieldsService.class);
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List<Fields> sysFields = itemService.list(new LambdaQueryWrapper<Fields>()
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.eq(Fields::getStatus, 1)
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.eq(Fields::getFlagEnable, 1));
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for (Field field : fields) {
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if (Modifier.isFinal(field.getModifiers())
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|| Modifier.isStatic(field.getModifiers())
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|| Modifier.isTransient(field.getModifiers())) {
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continue;
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}
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String memo = "Undefined";
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if (flagTemplate) {
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memo = field.getName();
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} else {
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if (field.isAnnotationPresent(Excel.class)) {
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memo = field.getAnnotation(Excel.class).name();
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}
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}
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if (field.isAnnotationPresent(ApiModelProperty.class)) {
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memo = field.getAnnotation(ApiModelProperty.class).value();
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}
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header.createCell(headerIdx).setCellValue(memo);
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headerIdx++;
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}
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if (clz.equals(MatnrsTemplate.class)) {
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//添加扩展字段别名
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if (!sysFields.isEmpty()) {
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for (Fields field : sysFields) {
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if (flagTemplate) {
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header.createCell(headerIdx).setCellValue(field.getFields());
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} else {
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header.createCell(headerIdx).setCellValue(field.getFieldsAlise());
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}
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headerIdx++;
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}
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}
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}
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int rowIndex = 1;
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if (!Objects.isNull(list)) {
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for (T t : list) {
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Row row = sheet.createRow(rowIndex++);
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int cellIndex = 0;
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for (Field field : fields) {
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if (Modifier.isFinal(field.getModifiers())
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|| Modifier.isStatic(field.getModifiers())
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|| Modifier.isTransient(field.getModifiers())) {
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continue;
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}
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// 此行很重要，特别是字段为private时
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field.setAccessible(true);
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Object value = null;
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try {
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value = field.get(t);
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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}
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if (value != null) {
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if (value instanceof Date) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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row.createCell(cellIndex).setCellValue(sdf.format((Date) value));
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} else {
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row.createCell(cellIndex).setCellValue(value.toString());
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}
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}
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cellIndex++;
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}
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}
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}
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for (int i = 0; i <= fields.length; i++) {
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sheet.autoSizeColumn(i);
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}
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return workbook;
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}
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/**
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* 添加导入excel配置参数
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* 注：默认配置可满足当前需求
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*
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* @return
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*/
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public static ImportParams getDefaultImportParams() {
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ImportParams importParams = new ImportParams();
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importParams.setTitleRows(0);
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// importParams.setNeedVerify(true);
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importParams.setHeadRows(1);
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importParams.setSheetNum(1);
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return importParams;
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}
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/**
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* 根据 {@code tClass} 相关成员变量的 {@link ExcelComment#example()} 字段创建模拟数据，暂不支持 复杂类型
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*
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* @param tClass
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* @return
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*/
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public static <T> T mockData(Class<T> tClass) {
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if (tClass == null) {
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return null;
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}
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T instance = null;
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try {
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instance = tClass.newInstance();
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Field[] declaredFields = tClass.getDeclaredFields();
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for (Field declaredField : declaredFields) {
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ExcelComment comment = declaredField.getAnnotation(ExcelComment.class);
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if (comment == null) {
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continue;
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}
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declaredField.setAccessible(true);
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Class<?> fieldType = declaredField.getType();
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String exampleValue = comment.example();
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Object value = null;
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if (fieldType == int.class || fieldType == Integer.class) {
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value = StringUtils.isBlank(exampleValue) ? 0 : Integer.parseInt(exampleValue);
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} else if (fieldType == short.class || fieldType == Short.class) {
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value = StringUtils.isBlank(exampleValue) ? 0 : Short.parseShort(exampleValue);
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} else if (fieldType == long.class || fieldType == Long.class) {
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value = StringUtils.isBlank(exampleValue) ? 0 : Long.parseLong(exampleValue);
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} else if (fieldType == double.class || fieldType == Double.class) {
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value = StringUtils.isBlank(exampleValue) ? 0 : Double.parseDouble(exampleValue);
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} else if (fieldType == boolean.class || fieldType == Boolean.class) {
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value = StringUtils.isNotBlank(exampleValue) && Boolean.parseBoolean(exampleValue);
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} else if (fieldType == String.class) {
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value = exampleValue;
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} else if (fieldType == Date.class) {
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value = DateUtils.parse(exampleValue);
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}
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if (value == null && !isBaseType(fieldType)) {
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declaredField.set(instance, null);
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} else {
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declaredField.set(instance, value);
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}
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}
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} catch (Exception e) {
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log.error("数据构造失败，请查询详细信息", e);
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return instance;
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}
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return instance;
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}
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/**
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* 是否是基础数据类型
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*
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* @param className
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* @return
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*/
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private static boolean isBaseType(Class<?> className) {
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if (className.equals(java.lang.Integer.class) ||
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className.equals(java.lang.Byte.class) ||
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className.equals(java.lang.Long.class) ||
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className.equals(java.lang.Double.class) ||
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className.equals(java.lang.Float.class) ||
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className.equals(java.lang.Character.class) ||
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className.equals(java.lang.Short.class) ||
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className.equals(java.lang.Boolean.class)) {
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return true;
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}
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return false;
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}
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}
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