excel processing using jexcel and poi (#1058)
* excel processing using jexcel and poi * update examples * small fix * fix poi version, fix imports
This commit is contained in:
lor6
KevinGilmore
parent
a1312e9ce0
commit
a44ea9588f
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@ -160,6 +160,28 @@
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<scope>test</scope>
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</dependency>
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<!-- excel -->
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<dependency>
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<groupId>org.apache.poi</groupId>
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<artifactId>poi</artifactId>
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<version>${poi.version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.poi</groupId>
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<artifactId>poi-ooxml</artifactId>
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<version>${poi.version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.poi</groupId>
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<artifactId>poi-ooxml-schemas</artifactId>
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<version>${poi.version}</version>
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</dependency>
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<dependency>
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<groupId>org.jxls</groupId>
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<artifactId>jxls-jexcel</artifactId>
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<version>${jexcel.version}</version>
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</dependency>
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</dependencies>
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<build>
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@ -370,6 +392,10 @@
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<!-- AspectJ -->
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<aspectj.version>1.8.9</aspectj.version>
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<!-- excel -->
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<poi.version>3.16-beta1</poi.version>
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<jexcel.version>1.0.6</jexcel.version>
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</properties>
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</project>
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@ -0,0 +1,140 @@
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package com.baeldung.excel;
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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.CellStyle;
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import org.apache.poi.ss.usermodel.IndexedColors;
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import org.apache.poi.ss.usermodel.Row;
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import org.apache.poi.ss.usermodel.Sheet;
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import org.apache.poi.ss.usermodel.Workbook;
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import org.apache.poi.xssf.usermodel.XSSFWorkbook;
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import org.apache.poi.xssf.usermodel.XSSFFont;
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import org.apache.poi.ss.usermodel.DateUtil;
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import org.apache.poi.ss.usermodel.FillPatternType;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Map;
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import java.util.HashMap;
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import java.util.ArrayList;
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import org.springframework.stereotype.Service;
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@Service
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public class ExcelPOIHelper {
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public Map<Integer, ArrayList<String>> readExcel(String fileLocation) throws IOException {
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Map<Integer, ArrayList<String>> data = new HashMap<Integer, ArrayList<String>>();
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FileInputStream file = new FileInputStream(new File(fileLocation));
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Workbook workbook = new XSSFWorkbook(file);
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Sheet sheet = workbook.getSheetAt(0);
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int i = 0;
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for (Row row : sheet) {
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data.put(i, new ArrayList<String>());
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for (Cell cell : row) {
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switch (cell.getCellTypeEnum()) {
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case STRING:
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data.get(i)
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.add(cell.getRichStringCellValue()
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.getString());
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break;
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case NUMERIC:
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if (DateUtil.isCellDateFormatted(cell)) {
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data.get(i)
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.add(cell.getDateCellValue() + "");
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} else {
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data.get(i)
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.add(cell.getNumericCellValue() + "");
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}
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break;
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case BOOLEAN:
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data.get(i)
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.add(cell.getBooleanCellValue() + "");
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break;
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case FORMULA:
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data.get(i)
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.add(cell.getCellFormula() + "");
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break;
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default:
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data.get(i)
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.add(" ");
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}
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}
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i++;
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}
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if (workbook != null){
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workbook.close();
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}
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return data;
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}
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public void writeExcel() throws IOException {
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Workbook workbook = new XSSFWorkbook();
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try {
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Sheet sheet = workbook.createSheet("Persons");
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sheet.setColumnWidth(0, 6000);
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sheet.setColumnWidth(1, 4000);
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Row header = sheet.createRow(0);
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CellStyle headerStyle = workbook.createCellStyle();
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headerStyle.setFillForegroundColor(IndexedColors.LIGHT_BLUE.getIndex());
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headerStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
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XSSFFont font = ((XSSFWorkbook) workbook).createFont();
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font.setFontName("Arial");
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font.setFontHeightInPoints((short) 16);
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font.setBold(true);
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headerStyle.setFont(font);
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Cell headerCell = header.createCell(0);
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headerCell.setCellValue("Name");
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headerCell.setCellStyle(headerStyle);
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headerCell = header.createCell(1);
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headerCell.setCellValue("Age");
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headerCell.setCellStyle(headerStyle);
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CellStyle style = workbook.createCellStyle();
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style.setWrapText(true);
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Row row = sheet.createRow(2);
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Cell cell = row.createCell(0);
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cell.setCellValue("John Smith");
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cell.setCellStyle(style);
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cell = row.createCell(1);
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cell.setCellValue(20);
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cell.setCellStyle(style);
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row = sheet.createRow(3);
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cell = row.createCell(0);
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cell.setCellValue("Ana Johnson");
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cell.setCellStyle(style);
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cell = row.createCell(1);
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cell.setCellValue(30);
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cell.setCellStyle(style);
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File currDir = new File(".");
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String path = currDir.getAbsolutePath();
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String fileLocation = path.substring(0, path.length() - 1) + "temp.xlsx";
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FileOutputStream outputStream = new FileOutputStream(fileLocation);
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workbook.write(outputStream);
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} finally {
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if (workbook != null) {
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try {
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workbook.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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}
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@ -0,0 +1,80 @@
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package com.baeldung.excel;
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import jxl.*;
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import java.util.Map;
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import java.util.HashMap;
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import java.util.ArrayList;
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import jxl.read.biff.BiffException;
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import java.io.File;
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import java.io.IOException;
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import org.springframework.stereotype.Service;
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import jxl.write.*;
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import jxl.write.Number;
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import jxl.format.Colour;
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@Service
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public class JExcelHelper {
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public Map<Integer, ArrayList<String>> readJExcel(String fileLocation) throws IOException, BiffException {
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Map<Integer, ArrayList<String>> data = new HashMap<Integer, ArrayList<String>>();
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Workbook workbook = Workbook.getWorkbook(new File(fileLocation));
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Sheet sheet = workbook.getSheet(0);
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int rows = sheet.getRows();
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int columns = sheet.getColumns();
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for (int i = 0; i < rows; i++) {
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data.put(i, new ArrayList<String>());
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for (int j = 0; j < columns; j++) {
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data.get(i).add(sheet.getCell(j, i).getContents());
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}
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}
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return data;
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}
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public void writeJExcel() throws IOException, WriteException {
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WritableWorkbook workbook = null;
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try {
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File currDir = new File(".");
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String path = currDir.getAbsolutePath();
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String fileLocation = path.substring(0, path.length() - 1) + "temp.xls";
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workbook = Workbook.createWorkbook(new File(fileLocation));
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WritableSheet sheet = workbook.createSheet("Sheet 1", 0);
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WritableCellFormat headerFormat = new WritableCellFormat();
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WritableFont font = new WritableFont(WritableFont.ARIAL, 16, WritableFont.BOLD);
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headerFormat.setFont(font);
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headerFormat.setBackground(Colour.LIGHT_BLUE);
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headerFormat.setWrap(true);
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Label headerLabel = new Label(0, 0, "Name", headerFormat);
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sheet.setColumnView(0, 60);
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sheet.addCell(headerLabel);
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headerLabel = new Label(1, 0, "Age", headerFormat);
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sheet.setColumnView(0, 40);
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sheet.addCell(headerLabel);
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WritableCellFormat cellFormat = new WritableCellFormat();
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cellFormat.setWrap(true);
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Label cellLabel = new Label(0, 2, "John Smith", cellFormat);
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sheet.addCell(cellLabel);
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Number cellNumber = new Number(1, 2, 20, cellFormat);
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sheet.addCell(cellNumber);
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cellLabel = new Label(0, 3, "Ana Johnson", cellFormat);
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sheet.addCell(cellLabel);
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cellNumber = new Number(1, 3, 30, cellFormat);
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sheet.addCell(cellNumber);
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workbook.write();
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} finally {
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if (workbook != null) {
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workbook.close();
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}
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}
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}
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}
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@ -21,6 +21,7 @@ import org.springframework.web.servlet.view.JstlView;
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import org.springframework.web.servlet.view.ResourceBundleViewResolver;
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import org.springframework.web.servlet.view.XmlViewResolver;
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import org.springframework.web.util.UrlPathHelper;
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import com.baeldung.excel.*;
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@Configuration
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@EnableWebMvc
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@ -106,4 +107,15 @@ public class WebConfig extends WebMvcConfigurerAdapter {
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configurer.setUrlPathHelper(urlPathHelper);
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}
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@Bean
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public JExcelHelper jExcelHelper() {
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return new JExcelHelper();
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}
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@Bean
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public ExcelPOIHelper excelPOIHelper() {
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return new ExcelPOIHelper();
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}
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}
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@ -0,0 +1,105 @@
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package com.baeldung.web.controller;
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import org.springframework.stereotype.Controller;
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import org.springframework.ui.Model;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestMethod;
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import org.springframework.web.multipart.MultipartFile;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import com.baeldung.excel.*;
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import jxl.read.biff.BiffException;
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import java.util.Map;
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import java.util.ArrayList;
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import javax.annotation.Resource;
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import jxl.write.WriteException;
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@Controller
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public class ExcelController {
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private String fileLocation;
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@Resource(name = "jExcelHelper")
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private JExcelHelper jExcelHelper;
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@Resource(name = "excelPOIHelper")
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private ExcelPOIHelper excelPOIHelper;
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@RequestMapping(method = RequestMethod.GET, value = "/excelProcessing")
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public String getExcelProcessingPage() {
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return "excel";
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}
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@RequestMapping(method = RequestMethod.POST, value = "/uploadExcelFile")
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public String uploadFile(Model model, MultipartFile file) throws IOException {
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InputStream in = file.getInputStream();
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File currDir = new File(".");
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String path = currDir.getAbsolutePath();
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fileLocation = path.substring(0, path.length() - 1) + file.getOriginalFilename();
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FileOutputStream f = new FileOutputStream(fileLocation);
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int ch = 0;
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while ((ch = in.read()) != -1) {
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f.write(ch);
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}
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f.flush();
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f.close();
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System.out.println(fileLocation);
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model.addAttribute("message", "File: " + file.getOriginalFilename() + " has been uploaded successfully!");
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return "excel";
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}
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@RequestMapping(method = RequestMethod.GET, value = "/readJExcel")
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public String readJExcel(Model model) throws IOException, BiffException {
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if (fileLocation != null) {
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if (fileLocation.endsWith(".xls")) {
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Map<Integer, ArrayList<String>> data = jExcelHelper.readJExcel(fileLocation);
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model.addAttribute("data", data);
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} else {
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model.addAttribute("message", "Not a valid .xls file!");
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}
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} else {
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model.addAttribute("message", "File missing! Please upload an excel file.");
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}
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return "excel";
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}
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@RequestMapping(method = RequestMethod.GET, value = "/readPOI")
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public String readPOI(Model model) throws IOException {
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if (fileLocation != null) {
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if (fileLocation.endsWith(".xlsx")) {
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Map<Integer, ArrayList<String>> data = excelPOIHelper.readExcel(fileLocation);
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model.addAttribute("data", data);
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} else {
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model.addAttribute("message", "Not a valid .xlsx file!");
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}
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} else {
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model.addAttribute("message", "File missing! Please upload an excel file.");
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}
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return "excel";
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}
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@RequestMapping(method = RequestMethod.POST, value = "/writeJExcel")
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public String writeJExcel(Model model) throws IOException, BiffException, WriteException {
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jExcelHelper.writeJExcel();
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model.addAttribute("message", "Write successful!");
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return "excel";
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}
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@RequestMapping(method = RequestMethod.POST, value = "/writePOI")
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public String writePOI(Model model) throws IOException {
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excelPOIHelper.writeExcel();
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model.addAttribute("message", "Write successful!");
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return "excel";
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}
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}
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@ -0,0 +1,56 @@
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<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
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pageEncoding="ISO-8859-1"%>
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<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Excel Processing</title>
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</head>
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<body>
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<c:url value="/uploadExcelFile" var="uploadFileUrl" />
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<c:url value="/excelProcessing" var="resetUrl" />
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<c:url value="/readJExcel" var="readJExcelUrl" />
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<c:url value="/writeJExcel" var="writeJExcelUrl" />
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<c:url value="/readPOI" var="readPOIUrl" />
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<c:url value="/writePOI" var="writePOIUrl" />
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<form method="post" enctype="multipart/form-data" action="${uploadFileUrl}" >
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<input type="file" name="file" accept=".xls,.xlsx"/>
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<input type="submit" value="Upload file"/>
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</form>
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<br />
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${message }
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<br /> <br />
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<form method="GET" action="${resetUrl}" >
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<input type="submit" value="Reset" />
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</form>
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<br /> <br />
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<a href="${readJExcelUrl}">Read file using JExcel</a>
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<a href="${readPOIUrl}">Read file using Apache POI</a>
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<br /> <br />
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File content:
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<c:if test="${not empty data}">
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<table style="border:1px solid black;border-collapse:collapse;">
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<c:forEach items="${data}" var="row">
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<tr>
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<c:forEach items="${row.value}" var="cell">
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<td style="border:1px solid black">${cell}</td>
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</c:forEach>
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</tr>
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</c:forEach>
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</table>
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</c:if>
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<br /> <br />
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<form action="${writeJExcelUrl}" method="POST">
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<input type="submit" value="Write to file using JExcel" />
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</form>
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<br />
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<form action="${writePOIUrl}" method="POST">
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<input type="submit" value="Write to file using Apache POI" />
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</form>
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</body>
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</html>
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