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
答案:4 悬赏:70 手机版
解决时间 2021-04-02 12:49
- 提问者网友:聂風
- 2021-04-01 23:33
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
最佳答案
- 五星知识达人网友:一袍清酒付
- 2021-04-01 23:43
public HSSFWorkbook exportexcel(List dataList,int col,int size,String[] col_name) {
HSSFWorkbook workbook = null;
try {
// 这里的数据即是你要从后台取得的数据
// 创建工作簿实例
workbook = new HSSFWorkbook();
// 创建工作表实例
HSSFSheet sheet = workbook.createSheet("TscExcel");
// 设置列宽
this.setSheetColumnWidth(sheet,col);
// 获取样式
HSSFCellStyle style = this.createTitleStyle(workbook);
if (dataList != null && dataList.size() > 0) {
// 创建第一行标题,标题名字的本地信息通过resources从资源文件中获取
HSSFRow row = sheet.createRow((short) 0);// 建立新行
for(int c=0;c
}
int j=0;
// 给excel填充数据
for (int i = 0; i < size; i++) {
HSSFRow row1 = sheet.createRow((short) (i + 1));// 建立新行
this.createCell(row1, 0, style, HSSFCell.CELL_TYPE_STRING, i+1);
for(int t=1;t
}
}
}else{
this.createCell(sheet.createRow(0), 0, style, HSSFCell.CELL_TYPE_STRING, "查无资料");
}
} catch (Exception e) {
e.printStackTrace();
}
return workbook;
}
private void setSheetColumnWidth(HSSFSheet sheet , int t) {
// 根据你数据里面的记录有多少列,就设置多少列
for(int i=0;i
sheet.setColumnWidth((short) i, (short) 2000);
}else{
sheet.setColumnWidth((short) i, (short) 5000);
}
}
}
全部回答
- 1楼网友:迟山
- 2021-04-02 02:26
这是在开发中操作excel等等是最常见不过的问题了,今天给大家分享一下Apache POI导出Excel方法,ExportExcel 可以直接copy过去改改就可以用
代码如下:
01.package com.smnpc.util;
02.
03.import java.io.FileOutputStream;
04.import java.io.IOException;
05.import java.util.Calendar;
06.
07.import org.apache.poi.hssf.usermodel.HSSFCell;
08.import org.apache.poi.hssf.usermodel.HSSFCellStyle;
09.import org.apache.poi.hssf.usermodel.HSSFDataFormat;
10.import org.apache.poi.hssf.usermodel.HSSFRow;
11.import org.apache.poi.hssf.usermodel.HSSFSheet;
12.import org.apache.poi.hssf.usermodel.HSSFWorkbook;
13.
14.
20.public class ExportExcel {
21.// 设置cell编码解决中文高位字节截断
22.// private static short XLS_ENCODING = HSSFWorkbook.ENCODING_UTF_16;
23.// 定制日期格式
24.private static String DATE_FORMAT = " m/d/yy "; // "m/d/yy h:mm"
25.// 定制浮点数格式
26.private static String NUMBER_FORMAT = " #,##0.00 ";
27.
28.private String xlsFileName;
29.
30.private HSSFWorkbook workbook;
31.
32.private HSSFSheet sheet;
33.
34.private HSSFRow row;
35.
36.
43.public void XLSExport(String fileName) {
44.this.xlsFileName = fileName;
45.this.workbook = new HSSFWorkbook();
46.this.sheet = workbook.createSheet();
47.}
48.
49.
55.public void exportXLS() throws IOException {
56.FileOutputStream fOut = new FileOutputStream(xlsFileName);
57.workbook.write(fOut);
58.fOut.flush();
59.fOut.close();
60.}
61.
62.
68.public void createRow(int index) {
69.this.row = this.sheet.createRow(index);
70.}
71.
72.
80.public void setCell(int index, String value) {
81.HSSFCell cell = this.row.createCell((short) index);
82.cell.setCellType(HSSFCell.CELL_TYPE_STRING);
83.// cell.setEncoding(XLS_ENCODING);
84.cell.setCellValue(value);
85.}
86.
87.
95.public void setCell(int index, Calendar value) {
96.HSSFCell cell = this.row.createCell((short) index);
97.// cell.setEncoding(XLS_ENCODING);
98.cell.setCellValue(value.getTime());
99.HSSFCellStyle cellStyle = workbook.createCellStyle(); // 建立新的cell样式
100.cellStyle.setDataFormat(HSSFDataFormat.getBuiltinFormat(DATE_FORMAT)); // 设置cell样式为定制的日期格式
101.cell.setCellStyle(cellStyle); // 设置该cell日期的显示格式
102.}
103.
104./**
105.* 设置单元格
106.*
107.* @param index
108.* 列号
109.* @param value
110.* 单元格填充值
代码如下:
01.package com.smnpc.util;
02.
03.import java.io.FileOutputStream;
04.import java.io.IOException;
05.import java.util.Calendar;
06.
07.import org.apache.poi.hssf.usermodel.HSSFCell;
08.import org.apache.poi.hssf.usermodel.HSSFCellStyle;
09.import org.apache.poi.hssf.usermodel.HSSFDataFormat;
10.import org.apache.poi.hssf.usermodel.HSSFRow;
11.import org.apache.poi.hssf.usermodel.HSSFSheet;
12.import org.apache.poi.hssf.usermodel.HSSFWorkbook;
13.
14.
20.public class ExportExcel {
21.// 设置cell编码解决中文高位字节截断
22.// private static short XLS_ENCODING = HSSFWorkbook.ENCODING_UTF_16;
23.// 定制日期格式
24.private static String DATE_FORMAT = " m/d/yy "; // "m/d/yy h:mm"
25.// 定制浮点数格式
26.private static String NUMBER_FORMAT = " #,##0.00 ";
27.
28.private String xlsFileName;
29.
30.private HSSFWorkbook workbook;
31.
32.private HSSFSheet sheet;
33.
34.private HSSFRow row;
35.
36.
43.public void XLSExport(String fileName) {
44.this.xlsFileName = fileName;
45.this.workbook = new HSSFWorkbook();
46.this.sheet = workbook.createSheet();
47.}
48.
49.
55.public void exportXLS() throws IOException {
56.FileOutputStream fOut = new FileOutputStream(xlsFileName);
57.workbook.write(fOut);
58.fOut.flush();
59.fOut.close();
60.}
61.
62.
68.public void createRow(int index) {
69.this.row = this.sheet.createRow(index);
70.}
71.
72.
80.public void setCell(int index, String value) {
81.HSSFCell cell = this.row.createCell((short) index);
82.cell.setCellType(HSSFCell.CELL_TYPE_STRING);
83.// cell.setEncoding(XLS_ENCODING);
84.cell.setCellValue(value);
85.}
86.
87.
95.public void setCell(int index, Calendar value) {
96.HSSFCell cell = this.row.createCell((short) index);
97.// cell.setEncoding(XLS_ENCODING);
98.cell.setCellValue(value.getTime());
99.HSSFCellStyle cellStyle = workbook.createCellStyle(); // 建立新的cell样式
100.cellStyle.setDataFormat(HSSFDataFormat.getBuiltinFormat(DATE_FORMAT)); // 设置cell样式为定制的日期格式
101.cell.setCellStyle(cellStyle); // 设置该cell日期的显示格式
102.}
103.
104./**
105.* 设置单元格
106.*
107.* @param index
108.* 列号
109.* @param value
110.* 单元格填充值
- 2楼网友:患得患失的劫
- 2021-04-02 01:47
http://blog.csdn.net/yaohucaizi/article/details/8852872# 这上面有poi操作Excel的方法
- 3楼网友:duile
- 2021-04-02 01:03
package com.test;
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());
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);
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();
}
}
@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();
}
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
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());
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);
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();
}
}
@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();
}
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
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