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feature1:支持excel转换为PDF
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‎doc/font/SimHei.ttf

9.6 MB
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‎fastexcel-core/pom.xml

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<name>fastexcel-core</name>
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<version>${revision}</version>
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<properties>
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<itext.version>7.1.15</itext.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.apache.commons</groupId>
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<artifactId>fastexcel-support</artifactId>
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<version>0.0.1</version>
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</dependency>
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<!-- itext7 -->
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<dependency>
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<groupId>com.itextpdf</groupId>
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<artifactId>itext7-core</artifactId>
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<version>${itext.version}</version>
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<type>pom</type>
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</dependency>
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<dependency>
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<groupId>com.itextpdf</groupId>
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<artifactId>kernel</artifactId>
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<version>${itext.version}</version>
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</dependency>
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<dependency>
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<groupId>com.itextpdf</groupId>
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<artifactId>io</artifactId>
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<version>${itext.version}</version>
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</dependency>
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<dependency>
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<groupId>com.itextpdf</groupId>
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<artifactId>layout</artifactId>
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<version>${itext.version}</version>
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</dependency>
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<dependency>
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<groupId>com.itextpdf</groupId>
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<artifactId>forms</artifactId>
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<version>${itext.version}</version>
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</dependency>
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<dependency>
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<groupId>com.itextpdf</groupId>
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<artifactId>pdfa</artifactId>
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<version>${itext.version}</version>
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</dependency>
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<dependency>
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<groupId>com.itextpdf</groupId>
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<artifactId>pdftest</artifactId>
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<version>${itext.version}</version>
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</dependency>
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<dependency>
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<groupId>com.itextpdf</groupId>
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<artifactId>font-asian</artifactId>
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<version>${itext.version}</version>
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</dependency>
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</dependencies>
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</project>

‎fastexcel-core/src/main/java/cn/idev/excel/FastExcel.java

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package cn.idev.excel;
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import cn.idev.excel.fileconvertor.ExcelConverter;
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import cn.idev.excel.fileconvertor.FileConverterContext;
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import java.io.File;
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/**
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* This is actually {@link FastExcelFactory}, and short names look better.
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*
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* @author jipengfei
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*/
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public class FastExcel extends FastExcelFactory {
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/**
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* Convert excel to pdf
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*
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* @param excelFile excel file
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* @param pdfFile pdf file
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* @param fontPath font path for pdf can be null
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* @param sheets sheet index to convert, if null convert all sheets
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*/
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public static void convertToPdf(File excelFile, File pdfFile, String fontPath, int[] sheets) {
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FileConverterContext context = new FileConverterContext(excelFile, pdfFile, fontPath, sheets);
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ExcelConverter excelConverter = context.getExcelConverter();
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excelConverter.convertToPdf();
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}
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}

‎fastexcel-core/src/main/java/cn/idev/excel/FastExcelFactory.java

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@@ -353,4 +353,25 @@ public static ExcelReaderSheetBuilder readSheet(Integer sheetNo, String sheetNam
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}
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return excelReaderSheetBuilder;
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}
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/**
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* Build excel the 'readSheet'
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* @param sheetNo Index of sheet,0 base.
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* @param sheetName The name of sheet.
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* @param numRows The number of rows to read, the default is all, start with 0.
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* @return
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*/
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public static ExcelReaderSheetBuilder readSheet(Integer sheetNo, String sheetName,Integer numRows) {
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ExcelReaderSheetBuilder excelReaderSheetBuilder = new ExcelReaderSheetBuilder();
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if (sheetNo != null) {
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excelReaderSheetBuilder.sheetNo(sheetNo);
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}
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if (sheetName != null) {
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excelReaderSheetBuilder.sheetName(sheetName);
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}
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if (numRows !=null) {
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excelReaderSheetBuilder.numRows(numRows);
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}
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return excelReaderSheetBuilder;
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}
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}

‎fastexcel-core/src/main/java/cn/idev/excel/fileconvertor/BaseExcelConverter.java

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package cn.idev.excel.fileconvertor;
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import com.itextpdf.layout.element.Table;
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import com.itextpdf.layout.property.TextAlignment;
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import org.apache.poi.ss.usermodel.*;
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import org.apache.poi.ss.util.CellRangeAddress;
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import java.io.IOException;
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import java.util.List;
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public abstract class BaseExcelConverter implements ExcelConverter {
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private final FileConverterContext context;
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public BaseExcelConverter(FileConverterContext context) {
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this.context = context;
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}
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@Override
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public void convertToPdf() {
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try {
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for (int sheetIndex : context.getSheets()) {
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processSheet(sheetIndex);
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}
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context.getDocument().close();
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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private void processSheet(int sheetIndex) throws IOException {
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Sheet sheet = context.getWorkbook().getSheetAt(sheetIndex);
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if (sheet == null || sheet.getRow(0) == null) {
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return;
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}
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float[] columnWidths = getColumnWidths(sheet);
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Table table = new Table(columnWidths);
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addRowsToTable(table, sheet, columnWidths, context.getFountPath());
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// addPicsToTable(table, sheet);
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context.getDocument().add(table);
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}
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protected abstract void addPicsToTable(Table table, Sheet sheet);
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private void addRowsToTable(Table table, Sheet sheet, float[] columnWidths, String fontPath) throws IOException {
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int lastRowNum = sheet.getLastRowNum() + 1;
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int lastCellNum = sheet.getRow(0).getLastCellNum();
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for (int i = 0; i < lastRowNum; i++) {
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Row row = sheet.getRow(i);
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addRowToTable(table, row, lastCellNum, columnWidths, fontPath);
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}
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}
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private void addRowToTable(Table table, Row row, int lastCellNum, float[] columnWidths, String fontPath) throws IOException {
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if (row == null) {
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addEmptyCells(table, lastCellNum); // 0 for empty row
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return;
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}
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for (int j = 0; j < lastCellNum; j++) {
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Cell cell = row.getCell(j);
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if (cell != null && !isCellProcessed(cell)) {
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// addCellToTable(table, cell, columnWidths, fontPath);
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CellRangeAddress cellRange = getCellRangeAddress(cell);
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int rowspan = (cellRange != null) ? (cellRange.getLastRow() - cellRange.getFirstRow() + 1) : 1;
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int colspan = (cellRange != null) ? (cellRange.getLastColumn() - cellRange.getFirstColumn() + 1) : 1;
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if ((cellRange != null)) {
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j = cellRange.getLastColumn();
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}
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float maxWidth = (cellRange != null) ? calculateMaxWidth(columnWidths, cellRange) : columnWidths[j];
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com.itextpdf.layout.element.Cell pdfCell = convertCell(cell, rowspan, colspan, maxWidth, fontPath);
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table.addCell(pdfCell);
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} else if (cell == null) {
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addEmptyCell(table);
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}
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}
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}
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private float calculateMaxWidth(float[] columnWidths, CellRangeAddress cellRange) {
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float maxWidth = 0;
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for (int k = cellRange.getFirstColumn(); k < cellRange.getLastColumn(); k++) {
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maxWidth += columnWidths[k];
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}
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return maxWidth;
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}
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private void addEmptyCell(Table table) {
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com.itextpdf.layout.element.Cell pdfCell = new com.itextpdf.layout.element.Cell();
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pdfCell.setBorder(com.itextpdf.layout.borders.Border.NO_BORDER);
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table.addCell(pdfCell);
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}
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private void addEmptyCells(Table table, int numberOfCells) {
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for (int j = 0; j < numberOfCells; j++) {
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addEmptyCell(table);
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}
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}
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protected abstract com.itextpdf.layout.element.Cell convertCell(Cell cell, int rowspan, int colspan, float maxWidth, String fontPath) throws IOException;
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public static com.itextpdf.layout.property.VerticalAlignment getVerticalAlignment(VerticalAlignment verticalAlignment) {
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switch (verticalAlignment) {
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case TOP:
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return com.itextpdf.layout.property.VerticalAlignment.TOP;
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case BOTTOM:
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return com.itextpdf.layout.property.VerticalAlignment.BOTTOM;
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case JUSTIFY:
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case CENTER:
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return com.itextpdf.layout.property.VerticalAlignment.MIDDLE;
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}
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return com.itextpdf.layout.property.VerticalAlignment.MIDDLE;
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}
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public static TextAlignment getTextAlignment(org.apache.poi.ss.usermodel.HorizontalAlignment alignment, CellType cellType) {
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switch (alignment) {
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case LEFT:
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return TextAlignment.LEFT;
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case RIGHT:
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return TextAlignment.RIGHT;
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case CENTER:
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return TextAlignment.CENTER;
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case JUSTIFY:
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return TextAlignment.JUSTIFIED;
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case GENERAL:
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if (cellType == CellType.NUMERIC) {
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return TextAlignment.RIGHT;
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} else if (cellType == CellType.BOOLEAN) {
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return TextAlignment.CENTER;
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}
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}
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return TextAlignment.LEFT;
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}
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private float[] getColumnWidths(Sheet sheet) {
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short lastCellNum = sheet.getRow(0).getLastCellNum();
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float[] widths = new float[lastCellNum];
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for (int i = 0; i < lastCellNum; i++) {
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widths[i] = sheet.getColumnWidthInPixels(i);
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}
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return widths;
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}
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private boolean isCellProcessed(Cell cell) {
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List<CellRangeAddress> mergedRegions = cell.getSheet().getMergedRegions();
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int rowIndex = cell.getRowIndex();
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int columnIndex = cell.getColumnIndex();
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for (CellRangeAddress cellAddresses : mergedRegions) {
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if (cellAddresses.getFirstRow() <= rowIndex && cellAddresses.getLastRow() >= rowIndex
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&& cellAddresses.getFirstColumn() <= columnIndex && cellAddresses.getLastColumn() >= columnIndex) {
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return !(cellAddresses.getFirstRow() == rowIndex && cellAddresses.getFirstColumn() == columnIndex);
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}
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}
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return false;
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}
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private CellRangeAddress getCellRangeAddress(Cell cell) {
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List<CellRangeAddress> mergedRegions = cell.getSheet().getMergedRegions();
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int rowIndex = cell.getRowIndex();
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int columnIndex = cell.getColumnIndex();
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for (CellRangeAddress cellAddresses : mergedRegions) {
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if (cellAddresses.getFirstRow() == rowIndex && cellAddresses.getFirstColumn() == columnIndex) {
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return cellAddresses;
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}
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}
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return null;
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}
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}

‎fastexcel-core/src/main/java/cn/idev/excel/fileconvertor/Excel2PdfUtils.java

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package cn.idev.excel.fileconvertor;
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import org.apache.poi.ss.usermodel.Cell;
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import org.apache.poi.ss.usermodel.CellType;
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import org.apache.poi.ss.usermodel.DateUtil;
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import org.apache.poi.util.LocaleUtil;
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import java.text.SimpleDateFormat;
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public class Excel2PdfUtils {
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private static final String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss"; // 日期格式
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private static final String TRUE_STRING = "TRUE";
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private static final String FALSE_STRING = "FALSE";
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private static final String EMPTY_STRING = "";
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// 使用单例模式确保 SimpleDateFormat 只被创建一次
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private static final ThreadLocal<SimpleDateFormat> DATE_FORMATTER = ThreadLocal.withInitial(() ->
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new SimpleDateFormat(DATE_FORMAT, LocaleUtil.getUserLocale())
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);
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public static String getValue(Cell cell) {
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if (cell == null) {
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return EMPTY_STRING;
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}
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CellType cellType = cell.getCellType();
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switch (cellType) {
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case BOOLEAN:
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return cell.getBooleanCellValue() ? TRUE_STRING : FALSE_STRING;
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case NUMERIC:
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return getNumericCellValue(cell);
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case STRING:
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return cell.getStringCellValue();
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default:
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return EMPTY_STRING;
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}
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}
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private static String getNumericCellValue(Cell cell) {
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if (DateUtil.isCellDateFormatted(cell)) {
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return DATE_FORMATTER.get().format(cell.getDateCellValue());
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}
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return String.valueOf(cell.getNumericCellValue());
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}
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}

‎fastexcel-core/src/main/java/cn/idev/excel/fileconvertor/ExcelConverter.java

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package cn.idev.excel.fileconvertor;
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import java.io.File;
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/**
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* Excel convert to other file
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* @author jipengfei
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*/
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public interface ExcelConverter {
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/**
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* excel to pdf
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*
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*/
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void convertToPdf();
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}

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