a44ea9588f
* excel processing using jexcel and poi * update examples * small fix * fix poi version, fix imports
105 lines
3.5 KiB
Java
105 lines
3.5 KiB
Java
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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} |