在Java程式設計中怎麼將從資料庫查詢出來的資料導成Excel檔案?
阿新 • • 發佈:2019-02-13
import jxl.*; import jxl.write.*; import java.io.*; import java.io.File.*; import java.util.*; public class excel { public static void main(String[] args) { String targetfile = "c:/out.xls";//輸出的excel檔名 String worksheet = "List";//輸出的excel檔案工作表名 String[] title = {"ID","NAME","DESCRIB"};//excel工作表的標題 WritableWorkbook workbook; try { //建立可寫入的Excel工作薄,執行生成的檔案在tomcat/bin下 //workbook = Workbook.createWorkbook(new File("output.xls")); System.out.println("begin"); OutputStream os=new FileOutputStream(targetfile); workbook=Workbook.createWorkbook(os); WritableSheet sheet = workbook.createSheet(worksheet, 0); //新增第一個工作表 //WritableSheet sheet1 = workbook.createSheet("MySheet1", 1); //可新增第二個工作 /* jxl.write.Label label = new jxl.write.Label(0, 2, "A label record"); //put a label in cell A3, Label(column,row) sheet.addCell(label); */ jxl.write.Label label; for (int i=0; i<title.length; i++) { //Label(列號,行號 ,內容 ) label = new jxl.write.Label(i, 0, title[i]); //put the title in row1 sheet.addCell(label); } //下列新增的對字型等的設定均除錯通過,可作參考用 //新增數字 jxl.write.Number number = new jxl.write.Number(3, 4, 3.14159); //put the number 3.14159 in cell D5 sheet.addCell(number); //新增帶有字型Formatting的物件 jxl.write.WritableFont wf = new jxl.write.WritableFont(WritableFont.TIMES,10,WritableFont.BOLD,true); jxl.write.WritableCellFormat wcfF = new jxl.write.WritableCellFormat(wf); jxl.write.Label labelCF = new jxl.write.Label(4,4,"文字",wcfF); sheet.addCell(labelCF); //新增帶有字型顏色,帶背景顏色 Formatting的物件 jxl.write.WritableFont wfc = new jxl.write.WritableFont(WritableFont.ARIAL,10,WritableFont.BOLD,false,jxl.format.UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.RED); jxl.write.WritableCellFormat wcfFC = new jxl.write.WritableCellFormat(wfc); wcfFC.setBackground(jxl.format.Colour.BLUE); jxl.write.Label labelCFC = new jxl.write.Label(1,5,"帶顏色",wcfFC); sheet.addCell(labelCFC); //新增帶有formatting的Number物件 jxl.write.NumberFormat nf = new jxl.write.NumberFormat("#.##"); jxl.write.WritableCellFormat wcfN = new jxl.write.WritableCellFormat(nf); jxl.write.Number labelNF = new jxl.write.Number(1,1,3.1415926,wcfN); sheet.addCell(labelNF); //3.新增Boolean物件 jxl.write.Boolean labelB = new jxl.write.Boolean(0,2,false); sheet.addCell(labelB); //4.新增DateTime物件 jxl.write.DateTime labelDT = new jxl.write.DateTime(0,3,newjava.util.Date()); sheet.addCell(labelDT); //新增帶有formatting的DateFormat物件 jxl.write.DateFormat df = new jxl.write.DateFormat("ddMMyyyyhh:mm:ss"); jxl.write.WritableCellFormat wcfDF = new jxl.write.WritableCellFormat(df); jxl.write.DateTime labelDTF = new jxl.write.DateTime(1,3,newjava.util.Date(),wcfDF); sheet.addCell(labelDTF); //和賓單元格 //sheet.mergeCells(int col1,int row1,int col2,int row2);//左上角到右下角 sheet.mergeCells(4,5,8,10);//左上角到右下角 wfc = new jxl.write.WritableFont(WritableFont.ARIAL,40,WritableFont.BOLD,false,jxl.format.UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.GREEN); jxl.write.WritableCellFormat wchB = new jxl.write.WritableCellFormat(wfc); wchB.setAlignment(jxl.format.Alignment.CENTRE); labelCFC = new jxl.write.Label(4,5,"單元合併",wchB); sheet.addCell(labelCFC); // //設定邊框 jxl.write.WritableCellFormat wcsB = new jxl.write.WritableCellFormat(); wcsB.setBorder(jxl.format.Border.ALL,jxl.format.BorderLineStyle.THICK); labelCFC = new jxl.write.Label(0,6,"邊框設定",wcsB); sheet.addCell(labelCFC); workbook.write(); workbook.close(); }catch(Exception e) { e.printStackTrace(); } System.out.println("end"); Runtime r=Runtime.getRuntime(); Process p=null; //String cmd[]={"notepad","exec.java"}; String cmd[]={"C:\\Program Files\\Microsoft Office\\Office\\EXCEL.EXE","out.xls"}; try{ p=r.exec(cmd); } catch(Exception e){ System.out.println("error executing: "+cmd[0]); } } }