java代码读取xlsx,java代码读取配置文件
java 怎么读xlsx文件
需要jxl的包
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//打开文件
Workbook book = Workbook.getWorkbook(new File(path)) ;
//取得第一个sheet
Sheet sheet = book.getSheet(0);
int rows = sheet.getRows();
//i和j是你要的行和列
Cell [] cell = sheet.getRow(i);
Cell cloumn_cell = sheet.getCell(j, i);
//str是你的内容
String str = cloumn_cell.getContents();
方法有点老了 不知道能不能帮到你
java怎么获取excel中的数据
使用java poi
package webservice;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
public class ExcelController {
@SuppressWarnings("deprecation")
public void excel() throws FileNotFoundException, IOException{
String filename = "d:\\excel.xls";
HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(filename));
//按名引用excel工作表
// HSSFSheet sheet = workbook.getSheet("JSP");
//用式获取excel工作表采用工作表索引值
HSSFSheet sheet = workbook.getSheetAt(0);
HSSFRow row ;
HSSFCell cell1;
int rows=sheet.getLastRowNum();
for(int icount=0;icountrows;icount++){
row = sheet.getRow(icount);
int line=row.getPhysicalNumberOfCells();
for(int j=0;jline;j++){
cell1= row.getCell(j);
System.out.println(cell1+"--"+icount+"---"+j);
}
}
//打印读取值
// System.out.println(cell.getStringCellValue());
//新建输流
FileOutputStream fout = new FileOutputStream(filename); //PS：filename 另存路径处理直接写入模版文件
//存盘
workbook.write(fout);
fout.flush();
//结束关闭
fout.close();
}
public HSSFCell getCell(HSSFRow row, int index) {
// 取发期单元格
HSSFCell cell = row.getCell(index);
// 单元格存
if (cell == null) {
// 创建单元格
cell = row.createCell(index);
}
// 返单元格
return cell;
}
public static void main(String[] args) {
ExcelController ec = new ExcelController();
try {
ec.excel();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
java如何读取整个excel文件的内容？
在java程序添加spire.xls.jar依赖
import com.spire.xls.*;
public class ReadExcel {
public static void main(String[] args) {
//创建Workbook对象
Workbook wb = new Workbook();
//加载一个Excel文档
wb.loadFromFile("C:\\Users\\Administrator\\Desktop\\test.xlsx");
//获取第一个工作表
Worksheet sheet = wb.getWorksheets().get(0);
//遍历工作表的每一行
for (int i = 1; i sheet.getLastRow() + 1; i++) {
//遍历工作的每一列
for (int j = 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("\t");
}
System.out.print("\n");
}
}
}
java如何读取xlsx并存入数据库
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package Read;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import bean.define;
public class readxlsx {
public ListListString readxl(String path) throws IOException{
InputStream is = new FileInputStream(path);
XSSFWorkbook xssfWorkbook = new XSSFWorkbook(is);
ListListString result = new ArrayListListString();
/*
//Sheet xssfSheet = null;
//循环每一页，并处理当前循环页*/
for (XSSFSheet xssfSheet: xssfWorkbook) {
if (xssfSheet == null)
continue;
//处理当前页，循环读取每一行
for (int rowNum = 1; rowNum = xssfSheet.getLastRowNum(); rowNum++){
XSSFRow xssfRow = xssfSheet.getRow(rowNum);
int minColIx = xssfRow.getFirstCellNum();
int maxColIx = xssfRow.getLastCellNum();
ListString rowList = new ArrayListString();
//Listdefine list = null;
//遍历该行，获取处理每个cell元素
for (int colIx = minColIx; colIx maxColIx; colIx++) {
XSSFCell cell = xssfRow.getCell(colIx);
if(cell == null) {
define define = new define();
XSSFCell id = xssfRow.getCell(0);
XSSFCell what = xssfRow.getCell(1);
define.setId(id.getStringCellValue());
define.setWhat(what.getStringCellValue());
continue;
}
rowList.add(cell.toString());
}
result.add(rowList);
}
}
return result;
}
}
package com.runoob.test;
import java.io.IOException;
import java.util.List;
import java.io.PrintWriter;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import Dao.dao;
import bean.define;
import Read.readxlsx;
public class adden extends HttpServlet{
private define define;
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html; charset=UTF-8");
readxlsx readxlsx = new readxlsx();
String path = request.getParameter("path");
PrintWriter out = response.getWriter();
ListListString list = readxlsx.readxl(path);
String id = request.getParameter("id");
String what = request.getParameter("what");
ListString de = new define();
dao d = new dao();
for(int i=0;ilist.size();i++){
de=list.get(i);
if(dao.adden(define)){
response.sendRedirect("index.jsp");
}
else out.println("读取失败");
}
out.flush();
out.close();
}
}
java怎么读取excel数据
引入poi的jar包，大致如下：
读取代码如下，应该能看得明白吧
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class ExcelUtil2007 {
/**读取excel文件流的指定索引的sheet
* @param inputStream excel文件流
* @param sheetIndex 要读取的sheet的索引
* @return
* @throws FileNotFoundException
* @throws IOException
*/
public static XSSFSheet readExcel(InputStream inputStream,int sheetIndex) throws FileNotFoundException, IOException
{
return readExcel(inputStream).getSheetAt(sheetIndex);
}
/**读取excel文件的指定索引的sheet
* @param filePath excel文件路径
* @param sheetIndex 要读取的sheet的索引
* @return
* @throws IOException
* @throws FileNotFoundException
*/
public static XSSFSheet readExcel(String filePath,int sheetIndex) throws FileNotFoundException, IOException
{
return readExcel(filePath).getSheetAt(sheetIndex);
}
/**读取excel文件的指定索引的sheet
* @param filePath excel文件路径
* @param sheetName 要读取的sheet的名称
* @return
* @throws IOException
* @throws FileNotFoundException
*/
public static XSSFSheet readExcel(String filePath,String sheetName) throws FileNotFoundException, IOException
{
return readExcel(filePath).getSheet(sheetName);
}
/**读取excel文件，返回XSSFWorkbook对象
* @param filePath excel文件路径
* @return
* @throws FileNotFoundException
* @throws IOException
*/
public static XSSFWorkbook readExcel(String filePath) throws FileNotFoundException, IOException
{
XSSFWorkbook wb=new XSSFWorkbook(new FileInputStream(filePath));
return wb;
}
/**读取excel文件流，返回XSSFWorkbook对象
* @param inputStream excel文件流
* @return
* @throws FileNotFoundException
* @throws IOException
*/
public static XSSFWorkbook readExcel(InputStream inputStream) throws FileNotFoundException, IOException
{
XSSFWorkbook wb=new XSSFWorkbook(inputStream);
return wb;
}
/***读取excel中指定的单元格，并返回字符串形式的值
* 1.数字
* 2.字符
* 3.公式（返回的为公式内容，非单元格的值）
* 4.空
* @param st 要读取的sheet对象
* @param rowIndex 行索引
* @param colIndex 列索引
* @param isDate 是否要取的是日期（是则返回yyyy-MM-dd格式的字符串）
* @return
*/
public static String getCellString(XSSFSheet st,int rowIndex,int colIndex,boolean isDate){
String s="";
XSSFRow row=st.getRow(rowIndex);
if(row == null) return "";
XSSFCell cell=row.getCell(colIndex);
if(cell == null) return "";
if (cell.getCellType() == 0) {//数字
if(isDate)s=new SimpleDateFormat("yyyy-MM-dd").format(cell.getDateCellValue());
else s = trimPointO(String.valueOf(getStringValue(cell)).trim());
}else if (cell.getCellType() == 1){//字符（excel中的空格，不是全角，也不是半角，不知道是神马,反正就是" "这个）
s=cell.getRichStringCellValue().getString().replaceAll(" ", " ").trim();
// s=cell.getStringCellValue();//07API新增，好像跟上一句一致
}
else if (cell.getCellType() == 2){//公式
s=cell.getCellFormula();
}
else if (cell.getCellType() == 3){//空
s="";
}
return s;
}
/**如果数字以 .0 结尾，则去掉.0
* @param s
* @return
*/
public static String trimPointO(String s) {
if (s.endsWith(".0"))
return s.substring(0, s.length() - 2);
else
return s;
}
/**处理科学计数法和百分比模式的数字单元格
* @param cell
* @return
*/
public static String getStringValue(XSSFCell cell) {
String sValue = null;
short dataFormat = cell.getCellStyle().getDataFormat();
double d = cell.getNumericCellValue();
BigDecimal b = new BigDecimal(Double.toString(d));
//百分比样式的
if (dataFormat == 0xa || dataFormat == 9) {
b=b.multiply(new BigDecimal(100));
//String temp=b.toPlainString();
DecimalFormat df=new DecimalFormat("0.00");//保留两位小数的百分比格式
sValue = df.format(b) + "%";
}else{
sValue = b.toPlainString();
}
return sValue;
}
}
文章题目：java代码读取xlsx,java代码读取配置文件
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