poi导出excel文件会加密

Ⅰ java POI 生成Excel 加密但不可以显示只读按钮 可以吗

你好，请问你这个问题解决了吗？能共享一下不？只读按钮是怎么去掉的，谢谢！！

Ⅱ 谁能给我一个详细的Java通过Apache POI导出Excel方法，最好能给完整代码

package com.test;
/**
* 需要的jar包：
* poi-3.0.2-FINAL-20080204.jar
* poi-contrib-3.0.2-FINAL-20080204.jar
*poi-scratchpad-3.0.2-FINAL-20080204.jar
* poi-3.5-beta6-20090622.jar
* geronimo-stax-api_1.0_spec-1.0.jar
* ooxml-schemas-1.0.jar
* openxml4j-bin-beta.jar
* poi-ooxml-3.5-beta6-20090622.jar
*xmlbeans-2.3.0.jar
* dom4j-1.6.1.jar
*/
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.util.PDFTextStripper;
import org.apache.poi.POIOLE2TextExtractor;
import org.apache.poi.POITextExtractor;
import org.apache.poi.POIXMLDocument;
import org.apache.poi.POIXMLTextExtractor;
import org.apache.poi.extractor.ExtractorFactory;
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;
import org.apache.poi.hwpf.extractor.wordExtractor;
import org.apache.poi.openxml4j.exceptions.OpenXML4JException;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.poifs.filesystem.DirectoryEntry;
import org.apache.poi.poifs.filesystem.DocumentEntry;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.xslf.extractor.XSLFPowerPointExtractor;
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 org.apache.poi.xwpf.extractor.XWPFWordExtractor;
import org.apache.xmlbeans.XmlException;
public class WordAndExcelExtractor {
public static void main(String[] args) {
try {
// 读取word
String wordFile = "D:/1.doc";
//String wordText2007 = WordAndExcelExtractor.extractTextFromDOC2007(wordFile);
//System.out.println("wordText2007=======" + wordText2007);
InputStream isword = new FileInputStream(wordFile);
WordExtractor wordExtractor = new WordExtractor(isword);
System.out.println("word========" + wordExtractor.getText());
// 读取 Excel
InputStream is = new FileInputStream("D:/测试.xls");
String excelText = WordAndExcelExtractor.extractTextFromXLS(is);
System.out.println("text2003==========" + excelText);
String excelFile = "D:/test2.xlsx";
String excelText2007 = WordAndExcelExtractor
.extractTextFromXLS2007(excelFile);
System.out.println("excelText2007==========" + excelText2007);
// 读取 PPT
PowerPointExtractor ppe = new PowerPointExtractor("D:/test.ppt");
System.out.println("ppt2003===============" + ppe.getText());
// System.out.println("###############################");
// System.out.println(ppe.getText(true, true, true, true));
//
// InputStream is = new FileInputStream("D:/test.ppt");
// PowerPointExtractor ppt2003 = new PowerPointExtractor(is);
// System.out.println(ppt2003.getText());
System.out.println("************************************");
XSLFPowerPointExtractor ppt = new XSLFPowerPointExtractor(
POIXMLDocument.openPackage("D:/test2.pptx"));
System.out.println("ppt2007============================="
+ ppt.getText());
/* 读取PDF */
InputStream in = new FileInputStream("D:/test.pdf");
PDDocument pdfDocument = PDDocument.load(in);
if (pdfDocument.isEncrypted()) {
// 仅仅尝试使用默认密码打开加密的PDF
pdfDocument.decrypt("");
}
PDFTextStripper stripper = null;
// 创建一个writer用来作来存储文件正文
StringWriter writer = new StringWriter();
if (stripper == null) {
stripper = new PDFTextStripper();
} else {
stripper.resetEngine();
}
stripper.writeText(pdfDocument, writer);
String contents = writer.getBuffer().toString();
System.out.println("pdfd===" + contents);

/* 向Word中写入数据 */
byte[] a = contents.getBytes();
ByteArrayInputStream bs = new ByteArrayInputStream(a);
POIFSFileSystem fs = new POIFSFileSystem();
// /////////////////////////////////
DirectoryEntry directory = fs.getRoot();
DocumentEntry de = directory.createDocument("WordDocument", bs);
// 以上两句代码不能省略，否则输出的是乱码
FileOutputStream fos = new FileOutputStream("D:\\dd.doc");
fs.writeFilesystem(fos);
bs.close();
fos.flush();
fos.close();
System.out.println("写入成功");

} catch (Exception e) {
e.printStackTrace();
}
}
/**
* @Method: extractTextFromXLS
* @Description: 从excel 2003档中提取纯文本
*
* @param
* @return String
* @throws
*/
@SuppressWarnings("deprecation")
private static String extractTextFromXLS(InputStream is) throws IOException {
StringBuffer content = new StringBuffer();
HSSFWorkbook workbook = new HSSFWorkbook(is); // 创建对Excel工作簿文件的引用
for (int numSheets = 0; numSheets < workbook.getNumberOfSheets(); numSheets++) {
if (null != workbook.getSheetAt(numSheets)) {
HSSFSheet aSheet = workbook.getSheetAt(numSheets); // 获得一个sheet
content.append(aSheet.getSheetName());
content.append("\r\n-----------------------\r\n");
for (int rowNumOfSheet = 0; rowNumOfSheet <= aSheet
.getLastRowNum(); rowNumOfSheet++) {
if (null != aSheet.getRow(rowNumOfSheet)) {
HSSFRow aRow = aSheet.getRow(rowNumOfSheet); // 获得一行
for (short cellNumOfRow = 0; cellNumOfRow <= aRow
.getLastCellNum(); cellNumOfRow++) {
if (null != aRow.getCell(cellNumOfRow)) {
HSSFCell aCell = aRow.getCell(cellNumOfRow); // 获得列值
if (aCell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC) {
content.append(aCell.getNumericCellValue());
} else if (aCell.getCellType() == HSSFCell.CELL_TYPE_BOOLEAN) {
content.append(aCell.getBooleanCellValue());
} else {
content.append(aCell.getStringCellValue());
}
content.append("\t");
}
}
content.append("\r\n");
}
}
}
}
return content.toString();
}
/**
* @Method: extractTextFromXLS2007
* @Description: 从excel 2007文档中提取纯文本
*
* @param
* @return String
* @throws
*/
private static String extractTextFromXLS2007(String fileName)
throws Exception {
StringBuffer content = new StringBuffer();
// 构造 XSSFWorkbook 对象，strPath 传入文件路径
XSSFWorkbook xwb = new XSSFWorkbook(fileName);
// 循环工作表Sheet
for (int numSheet = 0; numSheet < xwb.getNumberOfSheets(); numSheet++) {
XSSFSheet xSheet = xwb.getSheetAt(numSheet);
if (xSheet == null) {
continue;
}
// 循环行Row
for (int rowNum = 0; rowNum <= xSheet.getLastRowNum(); rowNum++) {
XSSFRow xRow = xSheet.getRow(rowNum);
if (xRow == null) {
continue;
}
// 循环列Cell
for (int cellNum = 0; cellNum <= xRow.getLastCellNum(); cellNum++) {
XSSFCell xCell = xRow.getCell(cellNum);
if (xCell == null) {
continue;
}
if (xCell.getCellType() == XSSFCell.CELL_TYPE_BOOLEAN) {
content.append(xCell.getBooleanCellValue());
} else if (xCell.getCellType() == XSSFCell.CELL_TYPE_NUMERIC) {
content.append(xCell.getNumericCellValue());
} else {
content.append(xCell.getStringCellValue());
}
}
}
}
return content.toString();
}
}

这是POI jar包的下载地址，我下载的是3.9版本的
http://poi.apache.org/download.html

Ⅲ java 使用POI导出Excel文件，打开导出文件时报错

在保护状态下execl的格式有可能正在被使用，你这边修改，准确说是线程冲突，一般excel值会作为导出文件的模板，是不会编辑的。你可以在读的时候判断execl是否正在被使用。
下面的代码问题，你可以参考
package com.hwt.glmf.common;

import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletResponse;

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.HSSFRichTextString;
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.CellRangeAddress;
import org.apache.poi.hssf.util.HSSFColor;

/**
* 导出Excel公共方法
* @version 1.0
*
* @author wangcp
*
*/
public class ExportExcel extends BaseAction {

//显示的导出表的标题
private String title;
//导出表的列名
private String[] rowName ;

private List<Object[]> dataList = new ArrayList<Object[]>();

HttpServletResponse response;

//构造方法，传入要导出的数据
public ExportExcel(String title,String[] rowName,List<Object[]> dataList){
this.dataList = dataList;
this.rowName = rowName;
this.title = title;
}

/*
* 导出数据
* */
public void export() throws Exception{
try{
HSSFWorkbook workbook = new HSSFWorkbook(); // 创建工作簿对象
HSSFSheet sheet = workbook.createSheet(title); // 创建工作表

// 产生表格标题行
HSSFRow rowm = sheet.createRow(0);
HSSFCell cellTiltle = rowm.createCell(0);

//sheet样式定义【getColumnTopStyle()/getStyle()均为自定义方法 - 在下面 - 可扩展】
HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook);//获取列头样式对象
HSSFCellStyle style = this.getStyle(workbook); //单元格样式对象

sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, (rowName.length-1)));
cellTiltle.setCellStyle(columnTopStyle);
cellTiltle.setCellValue(title);

// 定义所需列数
int columnNum = rowName.length;
HSSFRow rowRowName = sheet.createRow(2); // 在索引2的位置创建行(最顶端的行开始的第二行)

// 将列头设置到sheet的单元格中
for(int n=0;n<columnNum;n++){
HSSFCell cellRowName = rowRowName.createCell(n); //创建列头对应个数的单元格
cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING); //设置列头单元格的数据类型
HSSFRichTextString text = new HSSFRichTextString(rowName[n]);
cellRowName.setCellValue(text); //设置列头单元格的值
cellRowName.setCellStyle(columnTopStyle); //设置列头单元格样式
}

//将查询出的数据设置到sheet对应的单元格中
for(int i=0;i<dataList.size();i++){

Object[] obj = dataList.get(i);//遍历每个对象
HSSFRow row = sheet.createRow(i+3);//创建所需的行数

for(int j=0; j<obj.length; j++){
HSSFCell cell = null; //设置单元格的数据类型
if(j == 0){
cell = row.createCell(j,HSSFCell.CELL_TYPE_NUMERIC);
cell.setCellValue(i+1);
}else{
cell = row.createCell(j,HSSFCell.CELL_TYPE_STRING);
if(!"".equals(obj[j]) && obj[j] != null){
cell.setCellValue(obj[j].toString()); //设置单元格的值
}
}
cell.setCellStyle(style); //设置单元格样式
}
}
//让列宽随着导出的列长自动适应
for (int colNum = 0; colNum < columnNum; colNum++) {
int columnWidth = sheet.getColumnWidth(colNum) / 256;
for (int rowNum = 0; rowNum < sheet.getLastRowNum(); rowNum++) {
HSSFRow currentRow;
//当前行未被使用过
if (sheet.getRow(rowNum) == null) {
currentRow = sheet.createRow(rowNum);
} else {
currentRow = sheet.getRow(rowNum);
}
if (currentRow.getCell(colNum) != null) {
HSSFCell currentCell = currentRow.getCell(colNum);
if (currentCell.getCellType() == HSSFCell.CELL_TYPE_STRING) {
int length = currentCell.getStringCellValue().getBytes().length;
if (columnWidth < length) {
columnWidth = length;
}
}
}
}
if(colNum == 0){
sheet.setColumnWidth(colNum, (columnWidth-2) * 256);
}else{
sheet.setColumnWidth(colNum, (columnWidth+4) * 256);
}
}

if(workbook !=null){
try
{
String fileName = "Excel-" + String.valueOf(System.currentTimeMillis()).substring(4, 13) + ".xls";
String headStr = "attachment; filename=\"" + fileName + "\"";
response = getResponse();
response.setContentType("APPLICATION/OCTET-STREAM");
response.setHeader("Content-Disposition", headStr);
OutputStream out = response.getOutputStream();
workbook.write(out);
}
catch (IOException e)
{
e.printStackTrace();
}
}

}catch(Exception e){
e.printStackTrace();
}

}

/*
* 列头单元格样式
*/
public HSSFCellStyle getColumnTopStyle(HSSFWorkbook workbook) {

// 设置字体
HSSFFont font = workbook.createFont();
//设置字体大小
font.setFontHeightInPoints((short)11);
//字体加粗
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
//设置字体名字
font.setFontName("Courier New");
//设置样式;
HSSFCellStyle style = workbook.createCellStyle();
//设置底边框;
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
//设置底边框颜色;
style.setBottomBorderColor(HSSFColor.BLACK.index);
//设置左边框;
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
//设置左边框颜色;
style.setLeftBorderColor(HSSFColor.BLACK.index);
//设置右边框;
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
//设置右边框颜色;
style.setRightBorderColor(HSSFColor.BLACK.index);
//设置顶边框;
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
//设置顶边框颜色;
style.setTopBorderColor(HSSFColor.BLACK.index);
//在样式用应用设置的字体;
style.setFont(font);
//设置自动换行;
style.setWrapText(false);
//设置水平对齐的样式为居中对齐;
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//设置垂直对齐的样式为居中对齐;
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

return style;

}

/*
* 列数据信息单元格样式
*/
public HSSFCellStyle getStyle(HSSFWorkbook workbook) {
// 设置字体
HSSFFont font = workbook.createFont();
//设置字体大小
//font.setFontHeightInPoints((short)10);
//字体加粗
//font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
//设置字体名字
font.setFontName("Courier New");
//设置样式;
HSSFCellStyle style = workbook.createCellStyle();
//设置底边框;
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
//设置底边框颜色;
style.setBottomBorderColor(HSSFColor.BLACK.index);
//设置左边框;
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
//设置左边框颜色;
style.setLeftBorderColor(HSSFColor.BLACK.index);
//设置右边框;
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
//设置右边框颜色;
style.setRightBorderColor(HSSFColor.BLACK.index);
//设置顶边框;
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
//设置顶边框颜色;
style.setTopBorderColor(HSSFColor.BLACK.index);
//在样式用应用设置的字体;
style.setFont(font);
//设置自动换行;
style.setWrapText(false);
//设置水平对齐的样式为居中对齐;
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//设置垂直对齐的样式为居中对齐;
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

return style;

}
}

Ⅳ poi导出Excel问题

你的方法应该是没有问题，404错误只是你的跳转没响应，估计跳转页面路径错了。没有你的配置文件不好说