xls2csv可以将xls转成csv格式,利用windows批处理命令for即可实现批量转换。
命令如下:
@echo off
rem 放在xls目录外面,将在xls目录下生成对应的csv文件
rem xls2cvs工具所在的目录
set XLS2CSV_HOME=E:\setup\xls2csv
for /r %%i in (*.xls) do @%XLS2CSV_HOME%\xls2csv.exe %%i gbk
pause
010-04-08
java读取数据库并导出到Excel
博客分类: Java
ExcelJavaSQLMicrosoftJDBC
import java.io.File;
import jxl.*;
import jxl.write.*;
import jxl.write.biff.RowsExceededException;
import java.sql.*;
import java.util.*;
public class DBtoExcel {
/**
* 导出Excel表
* @param rs 数据库结果集
* @param filePath 要保存的路径,文件名为 fileName.xls
* @param sheetName 工作簿名称 工作簿名称,本方法目前只支持导出一个Excel工作簿
* @param columnName 列名,类型为Vector<STRING></STRING>
*/
public void WriteExcel(ResultSet rs, String filePath, String sheetName, Vector<STRING></STRING> columnName) {
WritableWorkbook workbook = null;
WritableSheet sheet = null;
int rowNum = 1; // 从第一行开始写入
try {
workbook = Workbook.createWorkbook(new File(filePath)); // 创建Excel文件
sheet = workbook.createSheet(sheetName, 0); // 创建名为 sheetName 的工作簿
this.writeCol(sheet, columnName, 0); // 首先将列名写入
// 将结果集写入
while(rs.next()) {
Vector<STRING></STRING> col = new Vector<STRING></STRING>(); // 用以保存一行数据
for(int i = 1; i <= columnName.size(); i++) { // 将一行内容保存在col中
col.add(rs.getString(i));
}
// 写入Excel
this.writeCol(sheet, col, rowNum++);
}
}catch(Exception e) {
e.printStackTrace();
}
finally {
try {
// 关闭
workbook.write();
workbook.close();
rs.close();
}catch(Exception e) {
e.printStackTrace();
}
}
}
/***
* 将数组写入工作簿
* @param sheet 要写入的工作簿
* @param col 要写入的数据数组
* @param rowNum 要写入哪一行
* @throws WriteException
* @throws RowsExceededException
*/
private void writeCol(WritableSheet sheet, Vector<STRING></STRING> col, int rowNum) throws RowsExceededException, WriteException {
int size = col.size(); // 获取集合大小
for(int i = 0; i < size; i++) { // 写入每一列
Label label = new Label(i, rowNum, col.get(i));
sheet.addCell(label);
}
}
}
import java.io.File;
import jxl.*;
import jxl.write.*;
import jxl.write.biff.RowsExceededException;
import java.sql.*;
import java.util.*;
public class DBtoExcel {
/**
* 导出Excel表
* @param rs 数据库结果集
* @param filePath 要保存的路径,文件名为 fileName.xls
* @param sheetName 工作簿名称 工作簿名称,本方法目前只支持导出一个Excel工作簿
* @param columnName 列名,类型为Vector
*/
public void WriteExcel(ResultSet rs, String filePath, String sheetName, Vector columnName) {
WritableWorkbook workbook = null;
WritableSheet sheet = null;
int rowNum = 1; // 从第一行开始写入
try {
workbook = Workbook.createWorkbook(new File(filePath)); // 创建Excel文件
sheet = workbook.createSheet(sheetName, 0); // 创建名为 sheetName 的工作簿
this.writeCol(sheet, columnName, 0); // 首先将列名写入
// 将结果集写入
while(rs.next()) {
Vector col = new Vector(); // 用以保存一行数据
for(int i = 1; i <= columnName.size(); i++) { // 将一行内容保存在col中
col.add(rs.getString(i));
}
// 写入Excel
this.writeCol(sheet, col, rowNum++);
}
}catch(Exception e) {
e.printStackTrace();
}
finally {
try {
// 关闭
workbook.write();
workbook.close();
rs.close();
}catch(Exception e) {
e.printStackTrace();
}
}
}
/***
* 将数组写入工作簿
* @param sheet 要写入的工作簿
* @param col 要写入的数据数组
* @param rowNum 要写入哪一行
* @throws WriteException
* @throws RowsExceededException
*/
private void writeCol(WritableSheet sheet, Vector col, int rowNum) throws RowsExceededException, WriteException {
int size = col.size(); // 获取集合大小
for(int i = 0; i < size; i++) { // 写入每一列
Label label = new Label(i, rowNum, col.get(i));
sheet.addCell(label);
}
}
}首先我用到的是jxl 的东西,所以要先下个Jar包,http://download.csdn.net/source/487467 导入Jar包之后,可以用这个.
读取excel
package com;
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("C:/mm.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();
}
}
/**
* 操作数据结果和行
* @throws FileNotFoundException
* @throws IOException
*/
public void oper() throws FileNotFoundException, IOException{
File file = new File("C:/mm.xls");
String[][] result = getData(file, 1);
int rowLength = result.length;
}
/**
* 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);
}
}