|
@@ -0,0 +1,346 @@
|
|
|
+package net.chenlin.dp.common.excel;
|
|
|
+
|
|
|
+import java.io.File;
|
|
|
+import java.io.FileOutputStream;
|
|
|
+import java.io.IOException;
|
|
|
+import java.io.InputStream;
|
|
|
+import java.lang.reflect.Constructor;
|
|
|
+import java.lang.reflect.Field;
|
|
|
+import java.math.BigDecimal;
|
|
|
+import java.net.URLEncoder;
|
|
|
+import java.util.ArrayList;
|
|
|
+import java.util.Arrays;
|
|
|
+import java.util.Comparator;
|
|
|
+import java.util.Date;
|
|
|
+import java.util.HashMap;
|
|
|
+import java.util.List;
|
|
|
+import java.util.Map;
|
|
|
+import java.util.concurrent.atomic.AtomicInteger;
|
|
|
+import java.util.stream.Collectors;
|
|
|
+import java.util.stream.Stream;
|
|
|
+
|
|
|
+import javax.servlet.http.HttpServletResponse;
|
|
|
+
|
|
|
+//import org.apache.commons.collections.CollectionUtils;
|
|
|
+//import org.apache.commons.lang3.BooleanUtils;
|
|
|
+//import org.apache.commons.lang3.CharUtils;
|
|
|
+//import org.apache.commons.lang3.StringUtils;
|
|
|
+//import org.apache.commons.lang3.math.NumberUtils;
|
|
|
+import org.apache.commons.lang.BooleanUtils;
|
|
|
+import org.apache.commons.lang.CharUtils;
|
|
|
+import org.apache.commons.lang.StringUtils;
|
|
|
+import org.apache.commons.lang.math.NumberUtils;
|
|
|
+import org.apache.poi.hssf.usermodel.HSSFDateUtil;
|
|
|
+import org.apache.poi.hssf.usermodel.HSSFWorkbook;
|
|
|
+import org.apache.poi.ss.usermodel.Cell;
|
|
|
+import org.apache.poi.ss.usermodel.CellStyle;
|
|
|
+import org.apache.poi.ss.usermodel.Font;
|
|
|
+import org.apache.poi.ss.usermodel.IndexedColors;
|
|
|
+import org.apache.poi.ss.usermodel.Row;
|
|
|
+import org.apache.poi.ss.usermodel.Sheet;
|
|
|
+import org.apache.poi.ss.usermodel.Workbook;
|
|
|
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
|
|
|
+import org.slf4j.Logger;
|
|
|
+import org.slf4j.LoggerFactory;
|
|
|
+import org.springframework.http.MediaType;
|
|
|
+import org.springframework.util.CollectionUtils;
|
|
|
+import org.springframework.web.multipart.MultipartFile;
|
|
|
+
|
|
|
+
|
|
|
+public class ExcelUtils {
|
|
|
+
|
|
|
+ private final static Logger log = LoggerFactory.getLogger(ExcelUtils.class);
|
|
|
+
|
|
|
+ private final static String EXCEL2003 = "xls";
|
|
|
+ private final static String EXCEL2007 = "xlsx";
|
|
|
+
|
|
|
+ public static <T> List<T> readExcel(String path, Class<T> cls,MultipartFile file){
|
|
|
+
|
|
|
+ String fileName = file.getOriginalFilename();
|
|
|
+ if (!fileName.matches("^.+\\.(?i)(xls)$") && !fileName.matches("^.+\\.(?i)(xlsx)$")) {
|
|
|
+ log.error("上传文件格式不正确");
|
|
|
+ }
|
|
|
+ List<T> dataList = new ArrayList<>();
|
|
|
+ Workbook workbook = null;
|
|
|
+ try {
|
|
|
+ InputStream is = file.getInputStream();
|
|
|
+ if (fileName.endsWith(EXCEL2007)) {
|
|
|
+// FileInputStream is = new FileInputStream(new File(path));
|
|
|
+ workbook = new XSSFWorkbook(is);
|
|
|
+ }
|
|
|
+ if (fileName.endsWith(EXCEL2003)) {
|
|
|
+// FileInputStream is = new FileInputStream(new File(path));
|
|
|
+ workbook = new HSSFWorkbook(is);
|
|
|
+ }
|
|
|
+ if (workbook != null) {
|
|
|
+ //类映射 注解 value-->bean columns
|
|
|
+ Map<String, List<Field>> classMap = new HashMap<>();
|
|
|
+ List<Field> fields = Stream.of(cls.getDeclaredFields()).collect(Collectors.toList());
|
|
|
+ fields.forEach(
|
|
|
+ field -> {
|
|
|
+ ExcelColumn annotation = field.getAnnotation(ExcelColumn.class);
|
|
|
+ if (annotation != null) {
|
|
|
+ String value = annotation.value();
|
|
|
+ if (StringUtils.isBlank(value)) {
|
|
|
+ return;//return起到的作用和continue是相同的 语法
|
|
|
+ }
|
|
|
+ if (!classMap.containsKey(value)) {
|
|
|
+ classMap.put(value, new ArrayList<>());
|
|
|
+ }
|
|
|
+ field.setAccessible(true);
|
|
|
+ classMap.get(value).add(field);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ );
|
|
|
+ //索引-->columns
|
|
|
+ Map<Integer, List<Field>> reflectionMap = new HashMap<>(16);
|
|
|
+ //默认读取第一个sheet
|
|
|
+ Sheet sheet = workbook.getSheetAt(0);
|
|
|
+
|
|
|
+ boolean firstRow = true;
|
|
|
+ for (int i = sheet.getFirstRowNum(); i <= sheet.getLastRowNum(); i++) {
|
|
|
+ Row row = sheet.getRow(i);
|
|
|
+ //首行 提取注解
|
|
|
+ if (firstRow) {
|
|
|
+ for (int j = row.getFirstCellNum(); j <= row.getLastCellNum(); j++) {
|
|
|
+ Cell cell = row.getCell(j);
|
|
|
+ String cellValue = getCellValue(cell);
|
|
|
+ if (classMap.containsKey(cellValue)) {
|
|
|
+ reflectionMap.put(j, classMap.get(cellValue));
|
|
|
+ }
|
|
|
+ }
|
|
|
+ firstRow = false;
|
|
|
+ } else {
|
|
|
+ //忽略空白行
|
|
|
+ if (row == null) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ try {
|
|
|
+ T t = cls.newInstance();
|
|
|
+ //判断是否为空白行
|
|
|
+ boolean allBlank = true;
|
|
|
+ for (int j = row.getFirstCellNum(); j <= row.getLastCellNum(); j++) {
|
|
|
+ if (reflectionMap.containsKey(j)) {
|
|
|
+ Cell cell = row.getCell(j);
|
|
|
+ String cellValue = getCellValue(cell);
|
|
|
+ if (StringUtils.isNotBlank(cellValue)) {
|
|
|
+ allBlank = false;
|
|
|
+ }
|
|
|
+ List<Field> fieldList = reflectionMap.get(j);
|
|
|
+ fieldList.forEach(
|
|
|
+ x -> {
|
|
|
+ try {
|
|
|
+ handleField(t, cellValue, x);
|
|
|
+ } catch (Exception e) {
|
|
|
+ log.error(String.format("reflect field:%s value:%s exception!", x.getName(), cellValue), e);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ );
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!allBlank) {
|
|
|
+ dataList.add(t);
|
|
|
+ } else {
|
|
|
+ log.warn(String.format("row:%s is blank ignore!", i));
|
|
|
+ }
|
|
|
+ } catch (Exception e) {
|
|
|
+ log.error(String.format("parse row:%s exception!", i), e);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } catch (Exception e) {
|
|
|
+ log.error(String.format("parse excel exception!"), e);
|
|
|
+ } finally {
|
|
|
+ if (workbook != null) {
|
|
|
+ try {
|
|
|
+ workbook.close();
|
|
|
+ } catch (Exception e) {
|
|
|
+ log.error(String.format("parse excel exception!"), e);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return dataList;
|
|
|
+ }
|
|
|
+
|
|
|
+ private static <T> void handleField(T t, String value, Field field) throws Exception {
|
|
|
+ Class<?> type = field.getType();
|
|
|
+ if (type == null || type == void.class || StringUtils.isBlank(value)) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ if (type == Object.class) {
|
|
|
+ field.set(t, value);
|
|
|
+ //数字类型
|
|
|
+ } else if (type.getSuperclass() == null || type.getSuperclass() == Number.class) {
|
|
|
+ if (type == int.class || type == Integer.class) {
|
|
|
+ field.set(t, NumberUtils.toInt(value));
|
|
|
+ } else if (type == long.class || type == Long.class) {
|
|
|
+ field.set(t, NumberUtils.toLong(value));
|
|
|
+ } else if (type == byte.class || type == Byte.class) {
|
|
|
+ field.set(t, NumberUtils.toByte(value));
|
|
|
+ } else if (type == short.class || type == Short.class) {
|
|
|
+ field.set(t, NumberUtils.toShort(value));
|
|
|
+ } else if (type == double.class || type == Double.class) {
|
|
|
+ field.set(t, NumberUtils.toDouble(value));
|
|
|
+ } else if (type == float.class || type == Float.class) {
|
|
|
+ field.set(t, NumberUtils.toFloat(value));
|
|
|
+ } else if (type == char.class || type == Character.class) {
|
|
|
+ field.set(t, CharUtils.toChar(value));
|
|
|
+ } else if (type == boolean.class) {
|
|
|
+ field.set(t, BooleanUtils.toBoolean(value));
|
|
|
+ } else if (type == BigDecimal.class) {
|
|
|
+ field.set(t, new BigDecimal(value));
|
|
|
+ }
|
|
|
+ } else if (type == Boolean.class) {
|
|
|
+ field.set(t, BooleanUtils.toBoolean(value));
|
|
|
+ } else if (type == Date.class) {
|
|
|
+ //
|
|
|
+ field.set(t, value);
|
|
|
+ } else if (type == String.class) {
|
|
|
+ field.set(t, value);
|
|
|
+ } else {
|
|
|
+ Constructor<?> constructor = type.getConstructor(String.class);
|
|
|
+ field.set(t, constructor.newInstance(value));
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ private static String getCellValue(Cell cell) {
|
|
|
+ if (cell == null) {
|
|
|
+ return "";
|
|
|
+ }
|
|
|
+ if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
|
|
|
+ if (HSSFDateUtil.isCellDateFormatted(cell)) {
|
|
|
+ return HSSFDateUtil.getJavaDate(cell.getNumericCellValue()).toString();
|
|
|
+ } else {
|
|
|
+ return new BigDecimal(cell.getNumericCellValue()).toString();
|
|
|
+ }
|
|
|
+ } else if (cell.getCellType() == Cell.CELL_TYPE_STRING) {
|
|
|
+ return StringUtils.trimToEmpty(cell.getStringCellValue());
|
|
|
+ } else if (cell.getCellType() == Cell.CELL_TYPE_FORMULA) {
|
|
|
+ return StringUtils.trimToEmpty(cell.getCellFormula());
|
|
|
+ } else if (cell.getCellType() == Cell.CELL_TYPE_BLANK) {
|
|
|
+ return "";
|
|
|
+ } else if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN) {
|
|
|
+ return String.valueOf(cell.getBooleanCellValue());
|
|
|
+ } else if (cell.getCellType() == Cell.CELL_TYPE_ERROR) {
|
|
|
+ return "ERROR";
|
|
|
+ } else {
|
|
|
+ return cell.toString().trim();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ public static <T> void writeExcel(String fileName,HttpServletResponse response, List<T> dataList, Class<T> cls){
|
|
|
+ Field[] fields = cls.getDeclaredFields();
|
|
|
+ List<Field> fieldList = Arrays.stream(fields)
|
|
|
+ .filter(field -> {
|
|
|
+ ExcelColumn annotation = field.getAnnotation(ExcelColumn.class);
|
|
|
+ if (annotation != null && annotation.col() > 0) {
|
|
|
+ field.setAccessible(true);
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ }).sorted(Comparator.comparing(field -> {
|
|
|
+ int col = 0;
|
|
|
+ ExcelColumn annotation = field.getAnnotation(ExcelColumn.class);
|
|
|
+ if (annotation != null) {
|
|
|
+ col = annotation.col();
|
|
|
+ }
|
|
|
+ return col;
|
|
|
+ })).collect(Collectors.toList());
|
|
|
+
|
|
|
+ Workbook wb = new XSSFWorkbook();
|
|
|
+ Sheet sheet = wb.createSheet("Sheet1");
|
|
|
+ AtomicInteger ai = new AtomicInteger();
|
|
|
+ {
|
|
|
+ Row row = sheet.createRow(ai.getAndIncrement());
|
|
|
+ AtomicInteger aj = new AtomicInteger();
|
|
|
+ //写入头部
|
|
|
+ fieldList.forEach(field -> {
|
|
|
+ ExcelColumn annotation = field.getAnnotation(ExcelColumn.class);
|
|
|
+ String columnName = "";
|
|
|
+ if (annotation != null) {
|
|
|
+ columnName = annotation.value();
|
|
|
+ }
|
|
|
+ Cell cell = row.createCell(aj.getAndIncrement());
|
|
|
+
|
|
|
+ CellStyle cellStyle = wb.createCellStyle();
|
|
|
+ cellStyle.setFillForegroundColor(IndexedColors.WHITE.getIndex());
|
|
|
+ cellStyle.setFillPattern(CellStyle.SOLID_FOREGROUND);
|
|
|
+ cellStyle.setAlignment(CellStyle.ALIGN_CENTER);
|
|
|
+
|
|
|
+ Font font = wb.createFont();
|
|
|
+ font.setBoldweight(Font.BOLDWEIGHT_NORMAL);
|
|
|
+ cellStyle.setFont(font);
|
|
|
+ cell.setCellStyle(cellStyle);
|
|
|
+ cell.setCellValue(columnName);
|
|
|
+ });
|
|
|
+ }
|
|
|
+ if (!dataList.isEmpty()) {
|
|
|
+ dataList.forEach(t -> {
|
|
|
+ Row row1 = sheet.createRow(ai.getAndIncrement());
|
|
|
+ AtomicInteger aj = new AtomicInteger();
|
|
|
+ fieldList.forEach(field -> {
|
|
|
+ Class<?> type = field.getType();
|
|
|
+ Object value = "";
|
|
|
+ try {
|
|
|
+ value = field.get(t);
|
|
|
+ } catch (Exception e) {
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+ Cell cell = row1.createCell(aj.getAndIncrement());
|
|
|
+ if (value != null) {
|
|
|
+ if (type == Date.class) {
|
|
|
+ cell.setCellValue(value.toString());
|
|
|
+ } else {
|
|
|
+ cell.setCellValue(value.toString());
|
|
|
+ }
|
|
|
+ cell.setCellValue(value.toString());
|
|
|
+ }
|
|
|
+ });
|
|
|
+ });
|
|
|
+ }
|
|
|
+ //冻结窗格
|
|
|
+ wb.getSheet("Sheet1").createFreezePane(0, 1, 0, 1);
|
|
|
+ //浏览器下载excel
|
|
|
+ buildExcelDocument(fileName,wb,response);
|
|
|
+ //生成excel文件
|
|
|
+// buildExcelFile("D:\\WPS\\default.xlsx",wb);
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 浏览器下载excel
|
|
|
+ * @param fileName
|
|
|
+ * @param wb
|
|
|
+ * @param response
|
|
|
+ */
|
|
|
+
|
|
|
+ private static void buildExcelDocument(String fileName, Workbook wb,HttpServletResponse response){
|
|
|
+ try {
|
|
|
+ response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
|
|
|
+ response.setHeader("Content-Disposition", "attachment;filename="+URLEncoder.encode(fileName, "utf-8"));
|
|
|
+ response.flushBuffer();
|
|
|
+ wb.write(response.getOutputStream());
|
|
|
+ } catch (IOException e) {
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 生成excel文件
|
|
|
+ * @param path 生成excel路径
|
|
|
+ * @param wb
|
|
|
+ */
|
|
|
+ private static void buildExcelFile(String path, Workbook wb){
|
|
|
+
|
|
|
+ File file = new File(path);
|
|
|
+ if (file.exists()) {
|
|
|
+ file.delete();
|
|
|
+ }
|
|
|
+ try {
|
|
|
+ wb.write(new FileOutputStream(file));
|
|
|
+ } catch (Exception e) {
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|