java_method_readFile读取文件文本xls

 package cn.com.qmhd.tools;

 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;

 import javax.servlet.http.HttpServletRequest;

 import org.apache.poi.hssf.usermodel.HSSFCell;
 import org.apache.poi.hssf.usermodel.HSSFCellStyle;
 import org.apache.poi.hssf.usermodel.HSSFFont;
 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.hssf.util.HSSFColor;
 import org.apache.poi.poifs.filesystem.POIFSFileSystem;
 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 ExcelUtils {

 public int readLine ( String filePath ){
 try {
 POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream( filePath ));
 HSSFWorkbook workbook = new HSSFWorkbook(fs);
 HSSFSheet sheet = workbook.getSheetAt(0);
 int rows = sheet.getLastRowNum()+1;
 return rows ;
 } catch (FileNotFoundException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:readLine:FileNotFound:error");
 return -1 ;
 } catch (IOException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:readLine:IO:error");
 return -1 ;
 }
 }

 public int readLine2007 ( String filePath ){
 try {

 @SuppressWarnings("deprecation")
 XSSFWorkbook xwb = new XSSFWorkbook(filePath);
 XSSFSheet sheet = xwb.getSheetAt(0);
 int rows = sheet.getLastRowNum()+1;
 return rows ;
 } catch (FileNotFoundException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:readLine:FileNotFound:error");
 return -1 ;
 } catch (IOException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:readLine:IO:error");
 return -1 ;
 }
 }

 public List< HashMap< String,String > > read( String fileName, HttpServletRequest request , int i , int line){
 List< HashMap< String,String > > list = new ArrayList< HashMap< String,String > >();
 try {
 POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream( request.getRealPath("/")+"upload/"+fileName ));
 HSSFWorkbook workbook = new HSSFWorkbook(fs);
 HSSFSheet sheet = workbook.getSheetAt(0);
 //int rows = sheet.getPhysicalNumberOfRows();
 int rows = (i+1)*1000;
 if ( rows >= line ) {
 rows = line;
 }
 for (int r = i*1000; r < rows; r++)
 {
 HSSFRow row = sheet.getRow(r);
 if ( row != null )
 {
 int cells = row.getLastCellNum();
 String value = "";
 HashMap< String,String > map = new HashMap< String,String >();
 for (short c = 0; c < cells; c++){
 HSSFCell cell = row.getCell(c);
 if (cell != null){
 switch (cell.getCellType())
 {
 case HSSFCell.CELL_TYPE_FORMULA:
 //
 break;
 case HSSFCell.CELL_TYPE_NUMERIC:
 value = (long) cell.getNumericCellValue()+"";
 break;
 case HSSFCell.CELL_TYPE_STRING:
 value = cell.getStringCellValue()+"";
 break;
 default:
 value = "";
 }
 map.put( c+"" , value );
 }
 }
 list.add( map );
 }
 }
 return list;
 } catch (FileNotFoundException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:read:FileNotFound:error");
 return list;
 } catch (IOException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:read:IO:error");
 return list;
 }
 }

 public List<String[]> read2007( String filePath , int nTotal ) {

 List<String[]> list = new ArrayList<String[]>();
 String[] strs = null;

 try {

 XSSFWorkbook xwb = new XSSFWorkbook(filePath);
 XSSFSheet sheet = xwb.getSheetAt(0);
 int rows =nTotal;

 for (int r = 0; r < rows; r++){

 XSSFRow row = sheet.getRow(r);
 if ( row != null && row.getLastCellNum()>0){
 int cells = row.getLastCellNum();
 String value = "";
 strs = new String[cells];
 for (short c = 0; c < cells; c++){
 XSSFCell cell = row.getCell(c);
 if (cell != null){
 switch (cell.getCellType())
 {
 case XSSFCell.CELL_TYPE_FORMULA:
 //
 break;
 case XSSFCell.CELL_TYPE_NUMERIC:
 value = (long) cell.getNumericCellValue()+"";
 break;
 case XSSFCell.CELL_TYPE_STRING:
 value = cell.getStringCellValue()+"";
 break;
 default:
 value = "";
 }

 strs[ Integer.parseInt( c+"" ) ] = value;
 }
 }
 list.add( strs );
 }
 strs = null;
 }
 return list;
 } catch (FileNotFoundException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:read:FileNotFound:error");
 return null;
 } catch (IOException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:read:IO:error");
 return null;
 }
 }

 public List<String[]> read( String filePath , int nTotal ) {

 List<String[]> list = new ArrayList<String[]>();
 String[] strs = null;

 try {
 POIFSFileSystem fs = new POIFSFileSystem( new FileInputStream( filePath ) );
 HSSFWorkbook workbook = new HSSFWorkbook(fs);
 HSSFSheet sheet = workbook.getSheetAt(0);
 int rows =nTotal;

 for (int r = 0; r < rows; r++){

 HSSFRow row = sheet.getRow(r);
 if ( row != null && row.getLastCellNum()>0){
 int cells = row.getLastCellNum();
 String value = "";
 strs = new String[cells];
 for (short c = 0; c < cells; c++){
 HSSFCell cell = row.getCell(c);
 if (cell != null){
 switch (cell.getCellType())
 {
 case HSSFCell.CELL_TYPE_FORMULA:
 //
 break;
 case HSSFCell.CELL_TYPE_NUMERIC:
 value = (long) cell.getNumericCellValue()+"";
 break;
 case HSSFCell.CELL_TYPE_STRING:
 value = cell.getStringCellValue()+"";
 break;
 default:
 value = "";
 }

 strs[ Integer.parseInt( c+"" ) ] = value;
 }
 }
 list.add( strs );
 }
 strs = null;
 }
 return list;
 } catch (FileNotFoundException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:read:FileNotFound:error");
 return null;
 } catch (IOException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:read:IO:error");
 return null;
 }
 }

 public boolean write( String filePath, List<String[]> list ) {
 // 新建文件
 HSSFWorkbook wb = new HSSFWorkbook();
 // 新建工作表
 HSSFSheet sheet = wb.createSheet("Sheet1");
 sheet.setDefaultColumnWidth((short) 20);
 sheet.setColumnWidth((short)7, (short)20000);

 HSSFCellStyle style = wb.createCellStyle();
 style.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index);
 style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
 style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
 style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
 style.setBorderRight(HSSFCellStyle.BORDER_THIN);
 style.setBorderTop(HSSFCellStyle.BORDER_THIN);
 // 生成一个字体
 HSSFFont font = wb.createFont();
 //font.setColor(HSSFColor.VIOLET.index);
 font.setFontHeightInPoints((short) 12);
 font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

 // 把字体应用到当前的样式
 style.setFont(font);
 for (int hang = 0; hang <list.size(); hang++)
 {
 // 创建行
 HSSFRow row = sheet.createRow((short) hang);
 String[] strs = list.get(hang);
 for (int lie = 0; lie < strs.length; lie++)
 {

 HSSFCell cell = row.createCell((short) lie);// 创建格 createCell((short) lie)

 if (hang == 0) {
 cell.setCellStyle(style);
 }
 cell.setCellValue(strs[lie]);
 }
 }

 FileOutputStream fileout;
 try {
 fileout = new FileOutputStream(filePath);
 wb.write(fileout);
 fileout.close();
 return true;
 } catch (FileNotFoundException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:write:FileNotFound:error");
 } catch (IOException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:write:FileNotFound:error");
 }

 return false;
 }

 public boolean write2( String filePath, String[] strs ) {

 // 新建文件
 HSSFWorkbook wb = new HSSFWorkbook();
 // 新建工作表
 HSSFSheet sheet = wb.createSheet("Sheet1");
 sheet.setDefaultColumnWidth((short) 20);

 HSSFCellStyle style = wb.createCellStyle();
 style.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index);
 style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
 style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
 style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
 style.setBorderRight(HSSFCellStyle.BORDER_THIN);
 style.setBorderTop(HSSFCellStyle.BORDER_THIN);
 // 生成一个字体
 HSSFFont font = wb.createFont();
 //font.setColor(HSSFColor.VIOLET.index);
 font.setFontHeightInPoints((short) 12);
 font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

 // 把字体应用到当前的样式
 style.setFont(font);
 for (int hang = 0; hang < 1; hang++)
 {
 HSSFRow row = sheet.createRow((short) hang);
 int nArg = strs.length;
 HSSFCell cell = row.createCell((short)(0));
 cell.setCellStyle(style);
 cell.setCellValue( "电话号码" );
 for (int lie = 0; lie < nArg; lie++)
 {
 // 创建格 createCell((short) lie)
 cell = row.createCell((short)(lie+1));
 cell.setCellStyle(style);
 cell.setCellValue( strs[lie] );
 }
 }

 FileOutputStream fileout;
 try {
 fileout = new FileOutputStream(filePath);
 wb.write(fileout);
 fileout.close();
 return true;
 } catch (FileNotFoundException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:write2:FileNotFound:error");
 } catch (IOException e) {
 ExceptionHeading.getException(this.getClass().getName(), e, "ExcelUtils:write2:FileNotFound:error");
 }

 return false;
 }

 }