SpringMVC 實現POI讀取Excle檔案中資料匯入資料庫（上傳）、匯出資料庫中資料到Excle檔案中（下載）
阿新 • • 發佈：2019-01-12
package com.shiliu.game.utils; import java.io.OutputStream; import java.net.URLEncoder; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletResponse; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle;import org.apache.poi.hssf.usermodel.HSSFFont; import org.apache.poi.hssf.usermodel.HSSFRichTextString; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.util.HSSFColor;import org.apache.poi.ss.util.CellRangeAddress; /** * 匯出Excel公共方法 * * @author wkr * */ public class LeadingOutExcel { //匯出檔案的名字 private String fileName; //顯示的匯出表的標題 private String title; //匯出表的列名 private String[] rowName; private List<Object[]> dataList = newArrayList<Object[]>(); private HttpServletResponse response = null; private HSSFWorkbook workbook = null; private OutputStream out = null; //構造方法，傳入要匯出的資料 public LeadingOutExcel(String fileName,String title,String[] rowName,List<Object[]> dataList,HttpServletResponse response){ this.fileName = fileName; this.dataList = dataList; this.rowName = rowName; this.title = title; this.response = response; } public void export () throws Exception{ HSSFWorkbook createExcel = this.createExcel(); this.writeInOutputStream(createExcel); } /* * 匯出資料 * */ public HSSFWorkbook createExcel() throws Exception{ try{ workbook = new HSSFWorkbook(); // 建立工作簿物件 HSSFSheet sheet = workbook.createSheet(title); // 建立工作表 /* * 產生表格標題行 HSSFRow rowm = sheet.createRow(0); HSSFCell cellTiltle = rowm.createCell(0);//設定開頭兩行 * 使用條件： * HSSFRow rowRowName = sheet.createRow(0);設定索引2的位置建立行 * HSSFRow row = sheet.createRow(i+1);//建立所需的行數 改為i+3 * */ //sheet樣式定義【getColumnTopStyle()/getStyle()均為自定義方法 - 在下面 - 可擴充套件】 HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook);//獲取列頭樣式物件 HSSFCellStyle style = this.getStyle(workbook); //單元格樣式物件 /* * 產生表格標題行 sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, (rowName.length-1))); //設定開頭兩行合併 cellTiltle.setCellStyle(columnTopStyle); //設定列頭單元格樣式 cellTiltle.setCellValue("");//設定空單元格的內容。比如傳入List的值是空的。 */ // 定義所需列數 int columnNum = rowName.length; HSSFRow rowRowName = sheet.createRow(0); // 在索引2的位置建立行(最頂端的行開始的第二行) // 將列頭設定到sheet的單元格中 for(int n=0;n<columnNum;n++){ HSSFCell cellRowName = rowRowName.createCell(n); //建立列頭對應個數的單元格 cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING); //設定列頭單元格的資料型別 HSSFRichTextString text = new HSSFRichTextString(rowName[n]); cellRowName.setCellValue(text); //設定列頭單元格的值 cellRowName.setCellStyle(columnTopStyle); //設定列頭單元格樣式 } //將查詢出的資料設定到sheet對應的單元格中 for(int i=0;i<dataList.size();i++){ Object[] obj = dataList.get(i);//遍歷每個物件 HSSFRow row = sheet.createRow(i+1);//建立所需的行數 for(int j=0; j<obj.length; j++){ HSSFCell cell = null; //設定單元格的資料型別 if(j == 0){ cell = row.createCell(j,HSSFCell.CELL_TYPE_NUMERIC); cell.setCellValue(i+1); }else{ cell = row.createCell(j,HSSFCell.CELL_TYPE_STRING); if(!"".equals(obj[j]) && obj[j] != null){ cell.setCellValue(obj[j].toString()); //設定單元格的值 } } cell.setCellStyle(style); //設定單元格樣式 } } //讓列寬隨著匯出的列長自動適應 for (int colNum = 0; colNum < columnNum; colNum++) { int columnWidth = sheet.getColumnWidth(colNum) / 256; for (int rowNum = 0; rowNum < sheet.getLastRowNum(); rowNum++) { HSSFRow currentRow; //當前行未被使用過 if (sheet.getRow(rowNum) == null) { currentRow = sheet.createRow(rowNum); } else { currentRow = sheet.getRow(rowNum); } if (currentRow.getCell(colNum) != null) { HSSFCell currentCell = currentRow.getCell(colNum); if (currentCell.getCellType() == HSSFCell.CELL_TYPE_STRING) { //int length = currentCell.getStringCellValue().getBytes().length; String stringCellValue = null; try { stringCellValue = currentCell.getStringCellValue(); } catch (Exception e) { continue; } int length = stringCellValue==null?50:stringCellValue.getBytes().length; if (columnWidth < length) { columnWidth = length; } } } } if(colNum == 0){ sheet.setColumnWidth(colNum, (columnWidth-2) * 256); }else{ sheet.setColumnWidth(colNum, (columnWidth+4) * 256); } } }catch(Exception e){ e.printStackTrace(); } return workbook; } public void writeInOutputStream(HSSFWorkbook workbook) throws Exception{ //設定響應型別、與頭資訊 response.setContentType("application/x-msdownload"); response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode(fileName+".xls", "UTF-8")); out = response.getOutputStream(); workbook.write(out); //清除資源 out.close(); } /* * 列頭單元格樣式 */ public HSSFCellStyle getColumnTopStyle(HSSFWorkbook workbook) { // 設定字型 HSSFFont font = workbook.createFont(); //設定字型大小 font.setFontHeightInPoints((short)11); //字型加粗 font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); //設定字型名字 font.setFontName("Courier New"); //設定樣式; HSSFCellStyle style = workbook.createCellStyle(); //設定底邊框; style.setBorderBottom(HSSFCellStyle.BORDER_THIN); //設定底邊框顏色; style.setBottomBorderColor(HSSFColor.BLACK.index); //設定左邊框; style.setBorderLeft(HSSFCellStyle.BORDER_THIN); //設定左邊框顏色; style.setLeftBorderColor(HSSFColor.BLACK.index); //設定右邊框; style.setBorderRight(HSSFCellStyle.BORDER_THIN); //設定右邊框顏色; style.setRightBorderColor(HSSFColor.BLACK.index); //設定頂邊框; style.setBorderTop(HSSFCellStyle.BORDER_THIN); //設定頂邊框顏色; style.setTopBorderColor(HSSFColor.BLACK.index); //在樣式用應用設定的字型; style.setFont(font); //設定自動換行; style.setWrapText(false); //設定水平對齊的樣式為居中對齊; style.setAlignment(HSSFCellStyle.ALIGN_CENTER); //設定垂直對齊的樣式為居中對齊; style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); return style; } /* * 列資料資訊單元格樣式 */ public HSSFCellStyle getStyle(HSSFWorkbook workbook) { // 設定字型 HSSFFont font = workbook.createFont(); //設定字型大小 //font.setFontHeightInPoints((short)10); //字型加粗 //font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); //設定字型名字 font.setFontName("Courier New"); //設定樣式; HSSFCellStyle style = workbook.createCellStyle(); //設定底邊框; style.setBorderBottom(HSSFCellStyle.BORDER_THIN); //設定底邊框顏色; style.setBottomBorderColor(HSSFColor.BLACK.index); //設定左邊框; style.setBorderLeft(HSSFCellStyle.BORDER_THIN); //設定左邊框顏色; style.setLeftBorderColor(HSSFColor.BLACK.index); //設定右邊框; style.setBorderRight(HSSFCellStyle.BORDER_THIN); //設定右邊框顏色; style.setRightBorderColor(HSSFColor.BLACK.index); //設定頂邊框; style.setBorderTop(HSSFCellStyle.BORDER_THIN); //設定頂邊框顏色; style.setTopBorderColor(HSSFColor.BLACK.index); //在樣式用應用設定的字型; style.setFont(font); //設定自動換行; style.setWrapText(false); //設定水平對齊的樣式為居中對齊; style.setAlignment(HSSFCellStyle.ALIGN_CENTER); //設定垂直對齊的樣式為居中對齊; style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); return style; } } package com.shiliu.game.utils; import java.io.OutputStream; import java.net.URLEncoder; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletResponse; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFFont; import org.apache.poi.hssf.usermodel.HSSFRichTextString; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.util.HSSFColor; import org.apache.poi.ss.util.CellRangeAddress; /** * 匯出Excel公共方法 * * @author wkr * */ public class LeadingOutExcel { //匯出檔案的名字 private String fileName; //顯示的匯出表的標題 private String title; //匯出表的列名 private String[] rowName; private List<Object[]> dataList = new ArrayList<Object[]>(); private HttpServletResponse response = null; private HSSFWorkbook workbook = null; private OutputStream out = null; //構造方法，傳入要匯出的資料 public LeadingOutExcel(String fileName,String title,String[] rowName,List<Object[]> dataList,HttpServletResponse response){ this.fileName = fileName; this.dataList = dataList; this.rowName = rowName; this.title = title; this.response = response; } public void export () throws Exception{ HSSFWorkbook createExcel = this.createExcel(); this.writeInOutputStream(createExcel); } /* * 匯出資料 * */ public HSSFWorkbook createExcel() throws Exception{ try{ workbook = new HSSFWorkbook(); // 建立工作簿物件 HSSFSheet sheet = workbook.createSheet(title); // 建立工作表 /* * 產生表格標題行 HSSFRow rowm = sheet.createRow(0); HSSFCell cellTiltle = rowm.createCell(0);//設定開頭兩行 * 使用條件： * HSSFRow rowRowName = sheet.createRow(0);設定索引2的位置建立行 * HSSFRow row = sheet.createRow(i+1);//建立所需的行數 改為i+3 * */ //sheet樣式定義【getColumnTopStyle()/getStyle()均為自定義方法 - 在下面 - 可擴充套件】 HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook);//獲取列頭樣式物件 HSSFCellStyle style = this.getStyle(workbook); //單元格樣式物件 /* * 產生表格標題行 sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, (rowName.length-1))); //設定開頭兩行合併 cellTiltle.setCellStyle(columnTopStyle); //設定列頭單元格樣式 cellTiltle.setCellValue("");//設定空單元格的內容。比如傳入List的值是空的。 */ // 定義所需列數 int columnNum = rowName.length; HSSFRow rowRowName = sheet.createRow(0); // 在索引2的位置建立行(最頂端的行開始的第二行) // 將列頭設定到sheet的單元格中 for(int n=0;n<columnNum;n++){ HSSFCell cellRowName = rowRowName.createCell(n); //建立列頭對應個數的單元格 cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING); //設定列頭單元格的資料型別 HSSFRichTextString text = new HSSFRichTextString(rowName[n]); cellRowName.setCellValue(text); //設定列頭單元格的值 cellRowName.setCellStyle(columnTopStyle); //設定列頭單元格樣式 } //將查詢出的資料設定到sheet對應的單元格中 for(int i=0;i<dataList.size();i++){ Object[] obj = dataList.get(i);//遍歷每個物件 HSSFRow row = sheet.createRow(i+1);//建立所需的行數 for(int j=0; j<obj.length; j++){ HSSFCell cell = null; //設定單元格的資料型別 if(j == 0){ cell = row.createCell(j,HSSFCell.CELL_TYPE_NUMERIC); cell.setCellValue(i+1); }else{ cell = row.createCell(j,HSSFCell.CELL_TYPE_STRING); if(!"".equals(obj[j]) && obj[j] != null){ cell.setCellValue(obj[j].toString()); //設定單元格的值 } } cell.setCellStyle(style); //設定單元格樣式 } } //讓列寬隨著匯出的列長自動適應 for (int colNum = 0; colNum < columnNum; colNum++) { int columnWidth = sheet.getColumnWidth(colNum) / 256; for (int rowNum = 0; rowNum < sheet.getLastRowNum(); rowNum++) { HSSFRow currentRow; //當前行未被使用過 if (sheet.getRow(rowNum) == null) { currentRow = sheet.createRow(rowNum); } else { currentRow = sheet.getRow(rowNum); } if (currentRow.getCell(colNum) != null) { HSSFCell currentCell = currentRow.getCell(colNum); if (currentCell.getCellType() == HSSFCell.CELL_TYPE_STRING) { //int length = currentCell.getStringCellValue().getBytes().length; String stringCellValue = null; try { stringCellValue = currentCell.getStringCellValue(); } catch (Exception e) { continue; } int length = stringCellValue==null?50:stringCellValue.getBytes().length; if (columnWidth < length) { columnWidth = length; } } } } if(colNum == 0){ sheet.setColumnWidth(colNum, (columnWidth-2) * 256); }else{ sheet.setColumnWidth(colNum, (columnWidth+4) * 256); } } }catch(Exception e){ e.printStackTrace(); } return workbook; } public void writeInOutputStream(HSSFWorkbook workbook) throws Exception{ //設定響應型別、與頭資訊 response.setContentType("application/x-msdownload"); response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode(fileName+".xls", "UTF-8")); out = response.getOutputStream(); workbook.write(out); //清除資源 out.close(); } /* * 列頭單元格樣式 */ public HSSFCellStyle getColumnTopStyle(HSSFWorkbook workbook) { // 設定字型 HSSFFont font = workbook.createFont(); //設定字型大小 font.setFontHeightInPoints((short)11); //字型加粗 font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); //設定字型名字 font.setFontName("Courier New"); //設定樣式; HSSFCellStyle style = workbook.createCellStyle(); //設定底邊框; style.setBorderBottom(HSSFCellStyle.BORDER_THIN); //設定底邊框顏色; style.setBottomBorderColor(HSSFColor.BLACK.index); //設定左邊框; style.setBorderLeft(HSSFCellStyle.BORDER_THIN); //設定左邊框顏色; style.setLeftBorderColor(HSSFColor.BLACK.index); //設定右邊框; style.setBorderRight(HSSFCellStyle.BORDER_THIN); //設定右邊框顏色; style.setRightBorderColor(HSSFColor.BLACK.index); //設定頂邊框; style.setBorderTop(HSSFCellStyle.BORDER_THIN); //設定頂邊框顏色; style.setTopBorderColor(HSSFColor.BLACK.index); //在樣式用應用設定的字型; style.setFont(font); //設定自動換行; style.setWrapText(false); //設定水平對齊的樣式為居中對齊; style.setAlignment(HSSFCellStyle.ALIGN_CENTER); //設定垂直對齊的樣式為居中對齊; style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); return style; } /* * 列資料資訊單元格樣式 */ public HSSFCellStyle getStyle(HSSFWorkbook workbook) { // 設定字型 HSSFFont font = workbook.createFont(); //設定字型大小 //font.setFontHeightInPoints((short)10); //字型加粗 //font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); //設定字型名字 font.setFontName("Courier New"); //設定樣式; HSSFCellStyle style = workbook.createCellStyle(); //設定底邊框; style.setBorderBottom(HSSFCellStyle.BORDER_THIN); //設定底邊框顏色; style.setBottomBorderColor(HSSFColor.BLACK.index); //設定左邊框; style.setBorderLeft(HSSFCellStyle.BORDER_THIN); //設定左邊框顏色; style.setLeftBorderColor(HSSFColor.BLACK.index); //設定右邊框; style.setBorderRight(HSSFCellStyle.BORDER_THIN); //設定右邊框顏色; style.setRightBorderColor(HSSFColor.BLACK.index); //設定頂邊框; style.setBorderTop(HSSFCellStyle.BORDER_THIN); //設定頂邊框顏色; style.setTopBorderColor(HSSFColor.BLACK.index); //在樣式用應用設定的字型; style.setFont(font); //設定自動換行; style.setWrapText(false); //設定水平對齊的