java查询excel

A. 在java编程中怎么将从数据库查询出来的数据导成Excel文件

import jxl.*; x0dx0aimport jxl.write.*; x0dx0aimport java.io.*; x0dx0aimport java.io.File.*; x0dx0aimport java.util.*; x0dx0ax0dx0apublic class excel x0dx0a{ x0dx0apublic static void main(String[] args) x0dx0a{ x0dx0ax0dx0aString targetfile = "c:/out.xls";//输出的excel文件名 x0dx0aString worksheet = "List";//输出的excel文件工作表名 x0dx0aString[] title = {"ID","NAME","DESCRIB"};//excel工作表的标题 x0dx0ax0dx0aWritableWorkbook workbook; x0dx0atry x0dx0a{ x0dx0a//创建可写入的Excel工作薄,运行生成的文件在tomcat/bin下 x0dx0a//workbook = Workbook.createWorkbook(new File("output.xls")); x0dx0aSystem.out.println("begin"); x0dx0ax0dx0aOutputStream os=new FileOutputStream(targetfile); x0dx0aworkbook=Workbook.createWorkbook(os); x0dx0ax0dx0aWritableSheet sheet = workbook.createSheet(worksheet, 0); //添加第一个工作表 x0dx0a//WritableSheet sheet1 = workbook.createSheet("MySheet1", 1); //可添加第二个工作 x0dx0a/* x0dx0ajxl.write.Label label = new jxl.write.Label(0, 2, "A label record"); //put a label in cell A3, Label(column,row) x0dx0asheet.addCell(label); x0dx0a*/ x0dx0ax0dx0ajxl.write.Label label; x0dx0afor (int i=0; i

B. 请教：JAVA怎么检索EXCEL并返回是哪个单元格，最好能把检索到的单元格高亮起来。

HSSF POI
package com.test;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
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.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;

public class ThreadGroupDemo{
public static void main(String args[]){

InputStream in;
try {
in = new FileInputStream("d:/test.xls");
HSSFWorkbook work = new HSSFWorkbook(in);
HSSFSheet sheet = work.getSheetAt(0);
HSSFRow row=sheet.getRow(16);
Iterator<Cell> cells=row.cellIterator();
while(cells.hasNext()){
Cell cell= cells.next();
System.out.println(cell);
try{
Double d=Double.parseDouble(cell.toString());
System.out.println(d);
}catch(Exception e){
e.printStackTrace();
}
CellStyle cst=cell.getCellStyle();
int a=cst.getFillBackgroundColor();
int b=cst.getFillForegroundColor();
System.out.println(a+"--"+b);
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
}
这是个能得到单元格背景色的东西(当然也可以设置背景色).我拿的是十六行一行的背景..希望对你有用

C. java怎马查询excel的最有一列

新版的POI已经支持了 foreach 了，你具体的问题我不太清楚。但是因为每一行可以拥有不同的列数，一般遍历就是
for (Row row : sheet) {
for(Cell cell : row)
{
}

}
如此！
所以你想找到最后一列是第几列，在POI里面是没有getlastcell的，你只能用最基本的计算机原理：遍历。

D. java如何读取整个excel文件的内容

在java程序添加spire.xls.jar依赖

importcom.spire.xls.*;

publicclassReadExcel{
publicstaticvoidmain(String[]args){

//创建Workbook对象
Workbookwb=newWorkbook();
//加载一个Excel文档
wb.loadFromFile("C:\Users\Administrator\Desktop\test.xlsx");
//获取第一个工作表
Worksheetsheet=wb.getWorksheets().get(0);
//遍历工作表的每一行
for(inti=1;i<sheet.getLastRow()+1;i++){
//遍历工作的每一列
for(intj=1;j<sheet.getLastColumn()+1;j++){
//输出指定单元格的数据
System.out.print(sheet.get(i,j).getText());
System.out.print("	");
}
System.out.print("
");
}
}
}

E. java如何读取整个excel文件的内容

本例使用java来读取excel的内容并展出出结果，代码如下：

复制代码 代码如下:

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
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.poifs.filesystem.POIFSFileSystem;

public class ExcelOperate {

public static void main(String[] args) throws Exception {
File file = new File("ExcelDemo.xls");
String[][] result = getData(file, 1);
int rowLength = result.length;
for(int i=0;i<rowLength;i++) {
for(int j=0;j<result[i].length;j++) {
System.out.print(result[i][j]+"\t\t");
}
System.out.println();
}

}
/**
* 读取Excel的内容，第一维数组存储的是一行中格列的值，二维数组存储的是多少个行
* @param file 读取数据的源Excel
* @param ignoreRows 读取数据忽略的行数，比喻行头不需要读入 忽略的行数为1
* @return 读出的Excel中数据的内容
* @throws FileNotFoundException
* @throws IOException
*/
public static String[][] getData(File file, int ignoreRows)
throws FileNotFoundException, IOException {
List<String[]> result = new ArrayList<String[]>();
int rowSize = 0;
BufferedInputStream in = new BufferedInputStream(new FileInputStream(
file));
// 打开HSSFWorkbook
POIFSFileSystem fs = new POIFSFileSystem(in);
HSSFWorkbook wb = new HSSFWorkbook(fs);
HSSFCell cell = null;
for (int sheetIndex = 0; sheetIndex < wb.getNumberOfSheets(); sheetIndex++) {
HSSFSheet st = wb.getSheetAt(sheetIndex);
// 第一行为标题，不取
for (int rowIndex = ignoreRows; rowIndex <= st.getLastRowNum(); rowIndex++) {
HSSFRow row = st.getRow(rowIndex);
if (row == null) {
continue;
}
int tempRowSize = row.getLastCellNum() + 1;
if (tempRowSize > rowSize) {
rowSize = tempRowSize;
}
String[] values = new String[rowSize];
Arrays.fill(values, "");
boolean hasValue = false;
for (short columnIndex = 0; columnIndex <= row.getLastCellNum(); columnIndex++) {
String value = "";
cell = row.getCell(columnIndex);
if (cell != null) {
// 注意：一定要设成这个，否则可能会出现乱码
cell.setEncoding(HSSFCell.ENCODING_UTF_16);
switch (cell.getCellType()) {
case HSSFCell.CELL_TYPE_STRING:
value = cell.getStringCellValue();
break;
case HSSFCell.CELL_TYPE_NUMERIC:
if (HSSFDateUtil.isCellDateFormatted(cell)) {
Date date = cell.getDateCellValue();
if (date != null) {
value = new SimpleDateFormat("yyyy-MM-dd")
.format(date);
} else {
value = "";
}
} else {
value = new DecimalFormat("0").format(cell
.getNumericCellValue());
}
break;
case HSSFCell.CELL_TYPE_FORMULA:
// 导入时如果为公式生成的数据则无值
if (!cell.getStringCellValue().equals("")) {
value = cell.getStringCellValue();
} else {
value = cell.getNumericCellValue() + "";
}
break;
case HSSFCell.CELL_TYPE_BLANK:
break;
case HSSFCell.CELL_TYPE_ERROR:
value = "";
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
value = (cell.getBooleanCellValue() == true ? "Y"
: "N");
break;
default:
value = "";
}
}
if (columnIndex == 0 && value.trim().equals("")) {
break;
}
values[columnIndex] = rightTrim(value);
hasValue = true;
}

if (hasValue) {
result.add(values);
}
}
}
in.close();
String[][] returnArray = new String[result.size()][rowSize];
for (int i = 0; i < returnArray.length; i++) {
returnArray[i] = (String[]) result.get(i);
}
return returnArray;
}

/**
* 去掉字符串右边的空格
* @param str 要处理的字符串
* @return 处理后的字符串
*/
public static String rightTrim(String str) {
if (str == null) {
return "";
}
int length = str.length();
for (int i = length - 1; i >= 0; i--) {
if (str.charAt(i) != 0x20) {
break;
}
length--;
}
return str.substring(0, length);
}
}

F. java程序怎么查询excel表格数据

前段时间正好做了，导入和导出的，你自己看吧
/**导出数据为XLS格式
* @param fos
* @param bo
*/
public void writeExcelBo(FileOutputStream fos, java.util.Vector ve)
{
jxl.write.WritableWorkbook wwb;
try
{
wwb= Workbook.createWorkbook(fos);
jxl.write.WritableSheet ws= wwb.createSheet("booksheet", 10);
ws.addCell(new jxl.write.Label(0, 1, "书目ID"));
ws.addCell(new jxl.write.Label(1, 1, "ISBN"));
ws.addCell(new jxl.write.Label(2, 1, "定价"));
ws.addCell(new jxl.write.Label(3, 1, "书名"));
ws.addCell(new jxl.write.Label(4, 1, "原书名"));
ws.addCell(new jxl.write.Label(5, 1, "副题名"));
ws.addCell(new jxl.write.Label(6, 1, "着者"));
ws.addCell(new jxl.write.Label(7, 1, "译者"));
ws.addCell(new jxl.write.Label(8, 1, "版次"));
ws.addCell(new jxl.write.Label(9, 1, "出版地"));
ws.addCell(new jxl.write.Label(10, 1, "出版社"));
ws.addCell(new jxl.write.Label(11, 1, "出版日期"));
ws.addCell(new jxl.write.Label(12, 1, "页数"));
ws.addCell(new jxl.write.Label(13, 1, "书高"));
ws.addCell(new jxl.write.Label(14, 1, "装帧"));
ws.addCell(new jxl.write.Label(15, 1, "丛书名"));
ws.addCell(new jxl.write.Label(16, 1, "一般性附注项"));
ws.addCell(new jxl.write.Label(17, 1, "简介"));
ws.addCell(new jxl.write.Label(18, 1, "主题词"));
ws.addCell(new jxl.write.Label(19, 1, "中图法分类"));
ws.addCell(new jxl.write.Label(20, 1, "更新日期"));
ws.addCell(new jxl.write.Label(21, 1, "本数"));
book=new Book[ve.size()];
for (int i= 0; i < ve.size(); i++)
{
book[i]= (Book)ve.get(i);
ws.addCell(new jxl.write.Label(0, i + 2, "" + book[i].getBookId()));
ws.addCell(new jxl.write.Label(1, i + 2, book[i].getIsbn()));
ws.addCell(new jxl.write.Label(2, i + 2, "" + book[i].getPrice()));
ws.addCell(new jxl.write.Label(3, i + 2, book[i].getBookTitle()));
ws.addCell(new jxl.write.Label(4, i + 2, book[i].getOldFilename()));
ws.addCell(new jxl.write.Label(5, i + 2, book[i].getSubTitle()));
ws.addCell(new jxl.write.Label(6, i + 2, book[i].getWriter()));
ws.addCell(new jxl.write.Label(7, i + 2, book[i].getTranscribe()));
ws.addCell(new jxl.write.Label(8, i + 2, "" + book[i].getVersion()));
ws.addCell(new jxl.write.Label(9, i + 2, book[i].getPublishCity()));
ws.addCell(new jxl.write.Label(10, i + 2, book[i].getPublisher()));
ws.addCell(new jxl.write.Label(11, i + 2, book[i].getPublishDate().toString()));
ws.addCell(new jxl.write.Label(12, i + 2, "" + book[i].getPage()));
ws.addCell(new jxl.write.Label(13, i + 2, "" + book[i].getHight()));
ws.addCell(new jxl.write.Label(14, i + 2, book[i].getInstall()));
ws.addCell(new jxl.write.Label(15, i + 2, book[i].getSeries()));
ws.addCell(new jxl.write.Label(16, i + 2, book[i].getNotes()));
ws.addCell(new jxl.write.Label(17, i + 2, book[i].getPrecisnotes()));
ws.addCell(new jxl.write.Label(18, i + 2, book[i].getSubject()));
ws.addCell(new jxl.write.Label(19, i + 2, book[i].getCls().replaceAll("_", "")));
ws.addCell(new jxl.write.Label(20, i + 2, book[i].getUpdatedate().toString()));
ws.addCell(new jxl.write.Label(21, i + 2, "0"));
}
jxl.write.WritableFont wfc=
new jxl.write.WritableFont(
WritableFont.ARIAL,
255,
WritableFont.BOLD,
false,
UnderlineStyle.NO_UNDERLINE,
jxl.format.Colour.BLACK);
jxl.write.WritableCellFormat wcfFC= new jxl.write.WritableCellFormat(wfc);
ws.addCell(new jxl.write.Label(0, 0, "为保证您提交定单的稳定和正确，导入定单时候请勿更改此表格式（请勿更改书目ID,订购本数自行添加！）"));
wwb.write();
//关闭Excel工作薄对象
wwb.close();
} catch (IOException e)
{} catch (RowsExceededException e)
{} catch (WriteException e)
{}
}

//导入EXCEL
if (f.getName().indexOf(".xls") > 0)
{
try
{
fis= new FileInputStream(f);
BookBean bob= new BookBean();
UserBean usb= new UserBean();
jxl.Workbook rwb= Workbook.getWorkbook(fis);
jxl.Sheet sh= rwb.getSheet(0);
int rowCount= sh.getRows();
SimpleDateFormat sdf= new SimpleDateFormat("dd/MM/yyyy");
book= new Book[rowCount - 1];
for (int i= 1; i < rowCount; i++)
{
book[i - 1]= new Book();
jxl.Cell[] ce= sh.getRow(i);
book[i - 1].setIsbn(ce[0].getContents().toString());
book[i - 1].setSeries(ce[1].getContents().toString());
book[i - 1].setBookTitle(ce[2].getContents().toString());
book[i - 1].setWriter(ce[3].getContents().toString());
book[i - 1].setTranscribe(ce[4].getContents().toString());
book[i - 1].setPublisher(ce[5].getContents().toString());
book[i - 1].setPublishDate(sdf.parse(ce[6].getContents().toString(), new ParsePosition(0)));
book[i-1].setVersion(Integer.parseInt(ce[7].getContents().toString()));
book[i-1].setPage(Integer.parseInt(ce[8].getContents().toString()));
book[i-1].setCls(ce[9].getContents().toString());
book[i-1].setPrecisnotes(ce[10].getContents().toString());
book[i-1].setInstall(ce[11].getContents().toString());
book[i-1].setPrice(Float.parseFloat(ce[12].getContents().toString()));
book[i-1].setUserid(usb.getUser().getUserid());
getVector().addElement(book[i - 1]);
}
rwb.close();
fis.close();
} catch (FileNotFoundException e)
{} catch (BiffException e)
{} catch (IOException e)
{} catch (NumberFormatException e)
{
ShowMessage("数据导入失败，请按照本软件要求的EXCEL格式导入定单");
}
}

G. java怎么读取excel文件里的数据

下面是一个简单的读取例子，如果报“java.io.IOException: Invalid header signature; read 4503608217567241, expected -2226271756974174256”之类的异常请用Excel打开（如果能打的开的话）然后另存为一下。

http://www.jb51.net/article/43713.htm

importjava.io.BufferedInputStream;
importjava.io.File;
importjava.io.FileInputStream;
importjava.io.FileNotFoundException;
importjava.io.IOException;
importjava.text.DecimalFormat;
importjava.text.SimpleDateFormat;
importjava.util.ArrayList;
importjava.util.Arrays;
importjava.util.Date;
importjava.util.List;
importorg.apache.poi.hssf.usermodel.HSSFCell;
importorg.apache.poi.hssf.usermodel.HSSFDateUtil;
importorg.apache.poi.hssf.usermodel.HSSFRow;
importorg.apache.poi.hssf.usermodel.HSSFSheet;
importorg.apache.poi.hssf.usermodel.HSSFWorkbook;
importorg.apache.poi.poifs.filesystem.POIFSFileSystem;
publicclassTest0{
/**
*@paramargs
*@throwsIOException
*@throwsFileNotFoundException
*/
publicstaticvoidmain(String[]args)throwsFileNotFoundException,
IOException{
Filefile=newFile("C://test01.xls");//Excel文件路径
String[][]result=getData(file,1);
introwLength=result.length;
for(inti=0;i<rowLength;i++){
for(intj=0;j<result[i].length;j++){
System.out.print(result[i][j]+"		");
}
System.out.println();
}
}
/**
*读取Excel的内容，第一维数组存储的是一行中格列的值，二维数组存储的是多少个行
*
*@paramfile
*读取数据的源Excel
*@paramignoreRows
*读取数据忽略的行数，比喻行头不需要读入忽略的行数为1
*@return读出的Excel中数据的内容
*@throwsFileNotFoundException
*@throwsIOException
*/
publicstaticString[][]getData(Filefile,intignoreRows)
throwsFileNotFoundException,IOException{
List<String[]>result=newArrayList<String[]>();
introwSize=0;
BufferedInputStreamin=newBufferedInputStream(newFileInputStream(
file));
//打开HSSFWorkbook
POIFSFileSystemfs=newPOIFSFileSystem(in);
HSSFWorkbookwb=newHSSFWorkbook(fs);
HSSFCellcell=null;
for(intsheetIndex=0;sheetIndex<wb.getNumberOfSheets();sheetIndex++){
HSSFSheetst=wb.getSheetAt(sheetIndex);
//第一行为标题，不取
for(introwIndex=ignoreRows;rowIndex<=st.getLastRowNum();rowIndex++){
HSSFRowrow=st.getRow(rowIndex);
if(row==null){
continue;
}
inttempRowSize=row.getLastCellNum()+1;
if(tempRowSize>rowSize){
rowSize=tempRowSize;
}
String[]values=newString[rowSize];
Arrays.fill(values,"");
booleanhasValue=false;
for(shortcolumnIndex=0;columnIndex<=row.getLastCellNum();columnIndex++){
Stringvalue="";
cell=row.getCell(columnIndex);
if(cell!=null){
//注意：一定要设成这个，否则可能会出现乱码
cell.setEncoding(HSSFCell.ENCODING_UTF_16);
switch(cell.getCellType()){
caseHSSFCell.CELL_TYPE_STRING:
value=cell.getStringCellValue();
break;
caseHSSFCell.CELL_TYPE_NUMERIC:
if(HSSFDateUtil.isCellDateFormatted(cell)){
Datedate=cell.getDateCellValue();
if(date!=null){
value=newSimpleDateFormat("yyyy-MM-dd")
.format(date);
}else{
value="";
}
}else{
value=newDecimalFormat("0").format(cell
.getNumericCellValue());
}
break;
caseHSSFCell.CELL_TYPE_FORMULA:
//导入时如果为公式生成的数据则无值
if(!cell.getStringCellValue().equals("")){
value=cell.getStringCellValue();
}else{
value=cell.getNumericCellValue()+"";
}
break;
caseHSSFCell.CELL_TYPE_BLANK:
break;
caseHSSFCell.CELL_TYPE_ERROR:
value="";
break;
caseHSSFCell.CELL_TYPE_BOOLEAN:
value=(cell.getBooleanCellValue()==true?"Y"
:"N");
break;
default:
value="";
}
}
if(columnIndex==0&&value.trim().equals("")){
break;
}
values[columnIndex]=rightTrim(value);
hasValue=true;
}
if(hasValue){
result.add(values);
}
}
}
in.close();
String[][]returnArray=newString[result.size()][rowSize];
for(inti=0;i<returnArray.length;i++){
returnArray[i]=(String[])result.get(i);
}
returnreturnArray;
}
/**
*去掉字符串右边的空格
*
*@paramstr
*要处理的字符串
*@return处理后的字符串
*/
publicstaticStringrightTrim(Stringstr){
if(str==null){
return"";
}
intlength=str.length();
for(inti=length-1;i>=0;i--){
if(str.charAt(i)!=0x20){
break;
}
length--;
}
returnstr.substring(0,length);
}
}