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;

}

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java如何读取xlsx并存入数据库

java怎么读取excel数据

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