package cn.xxxx.tools;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
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.XSSFWorkbook;
import org.apache.xmlbeans.impl.piccolo.io.FileFormatException;
public class ReadExcelTest {
private static final String EXTENSION_XLS = "xls";
private static final String EXTENSION_XLSX = "xlsx";
/***
* <pre>
* 取得Workbook对象(xls和xlsx对象不同,不过都是Workbook的实现类)
* xls:HSSFWorkbook
* xlsx:XSSFWorkbook
* @param filePath
* @return
* @throws IOException
* </pre>
*/
private Workbook getWorkbook(String filePath) throws IOException {
Workbook workbook = null;
InputStream is = new FileInputStream(filePath);
if (filePath.endsWith(EXTENSION_XLS)) {
workbook = new HSSFWorkbook(is);
} else if (filePath.endsWith(EXTENSION_XLSX)) {
workbook = new XSSFWorkbook(is);
}
return workbook;
}
/**
* 文件检查
* @param filePath
* @throws FileNotFoundException
* @throws FileFormatException
*/
private void preReadCheck(String filePath) throws FileNotFoundException, FileFormatException {
// 常规检查
File file = new File(filePath);
if (!file.exists()) {
throw new FileNotFoundException("传入的文件不存在:" + filePath);
}
if (!(filePath.endsWith(EXTENSION_XLS) || filePath.endsWith(EXTENSION_XLSX))) {
throw new FileFormatException("传入的文件不是excel");
}
}
/**
* 读取excel文件内容
* @param filePath
* @throws FileNotFoundException
* @throws FileFormatException
*/
public void readExcel(String filePath,List<String[]> arrs) throws FileNotFoundException, FileFormatException {
// 检查
this.preReadCheck(filePath);
// 获取workbook对象
Workbook workbook = null;
try {
workbook = this.getWorkbook(filePath);
// 读文件 一个sheet一个sheet地读取
for (int numSheet = 0; numSheet < workbook.getNumberOfSheets(); numSheet++) {
Sheet sheet = workbook.getSheetAt(numSheet);
if (sheet == null) {
continue;
}
//System.out.println("=======================" + sheet.getSheetName() + "=========================");
int firstRowIndex = sheet.getFirstRowNum();
int lastRowIndex = sheet.getLastRowNum();
// 读取首行 即,表头
String[] strArr=new String[3];
Row firstRow = sheet.getRow(firstRowIndex);
/*
for (int i = firstRow.getFirstCellNum(); i <= firstRow.getLastCellNum(); i++) {
Cell cell = firstRow.getCell(i);
String cellValue = this.getCellValue(cell, true);
//System.out.print(i+": "+" " + cellValue + "\t");
strArr[i]=cellValue;
}
arrs.add(strArr);*/
//System.out.println("");
// 读取数据行
for (int rowIndex = firstRowIndex + 1; rowIndex <= lastRowIndex; rowIndex++) {
strArr=new String[7];
Row currentRow = sheet.getRow(rowIndex);// 当前行
int firstColumnIndex = currentRow.getFirstCellNum(); // 首列
int lastColumnIndex = currentRow.getLastCellNum();// 最后一列
for (int columnIndex = firstColumnIndex; columnIndex <= lastColumnIndex; columnIndex++) {
Cell currentCell = currentRow.getCell(columnIndex);// 当前单元格
String currentCellValue = this.getCellValue(currentCell, true);// 当前单元格的值
//System.out.println(columnIndex+": "+currentCellValue + "\t");
strArr[columnIndex]=currentCellValue;
}
arrs.add(strArr);
//System.out.println("");
}
//System.out.println("======================================================");
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (workbook != null) {
try {
workbook.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* 取单元格的值
* @param cell 单元格对象
* @param treatAsStr 为true时,当做文本来取值 (取到的是文本,不会把“1”取成“1.0”)
* @return
*/
private String getCellValue(Cell cell, boolean treatAsStr) {
if (cell == null) {
return "";
}
if (treatAsStr) {
// 虽然excel中设置的都是文本,但是数字文本还被读错,如“1”取成“1.0”
// 加上下面这句,临时把它当做文本来读取
cell.setCellType(Cell.CELL_TYPE_STRING);
}
if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN) {
return String.valueOf(cell.getBooleanCellValue());
} else if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
return String.valueOf(cell.getNumericCellValue());
} else {
return String.valueOf(cell.getStringCellValue());
}
}
private static String getCode() {
Random rd = new Random();
return new StringBuilder().append(rd.nextInt(10))
.append(rd.nextInt(10)).append(rd.nextInt(10))
.append(rd.nextInt(10)).append(rd.nextInt(10))
.append(rd.nextInt(10)).toString();
}
public static void main(String[] args) throws Exception {
ReadExcelTest ret = new ReadExcelTest();
List<String[]> lsArr=new ArrayList<String[]>();
ret.readExcel("D:\\gpsared.xls",lsArr);
for(String [] a: lsArr){
//System.out.println(a[0]+" "+a[1].split("#")[0]);
String ap [] =a[1].split("#")[0].split(",");
System.out.print("new BMap.Point("+ap[1]+","+ap[0]+"),");
//System.out.print("\""+a[0]+"\",");
}
System.out.println();
for(String [] a: lsArr){
//System.out.println(a[0]+" "+a[1].split("#")[0]);
//String ap [] =a[1].split("#")[0].split(",");
//System.out.print("new BMap.Point("+ap[1]+","+ap[0]+"),");
System.out.print("\""+a[0].substring(0, 6)+"\",");
}
}
}
读取新老版本的Excel,XLS与XLSX
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转载自blog.csdn.net/jone33/article/details/88378739
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