备忘录

JAVA读取WORD,EXCEL,PDF,TXT,RTF,HTML文件文本内容的方法示例

以下是Java对几种文本文件内容读取代码。其中，OFFICE文档（WORD,EXCEL）使用了POI控件，PDF使用了PDFBOX控件。

  点击这里 查看相关控件的下载地址和配置方法。

 

 

  WORD

package textReader;
import java.io.*;
import org.apache.poi.hwpf.extractor.WordExtractor;
public class WordReader {
public WordReader(){
}
/**
* @param filePath 文件路径
* @return 读出的Word的内容
*/
public String getTextFromWord(String filePath){
String result = null;
File file = new File(filePath);
try{
FileInputStream fis = new FileInputStream(file);
WordExtractor wordExtractor = new WordExtractor(fis);
result = wordExtractor.getText();
}catch(FileNotFoundException e){
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
};
return result;
}
}

  

  EXCEL

package textReader;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
public class ExcelReader {
@SuppressWarnings("deprecation")
/**
* @param filePath 文件路径
* @return 读出的Excel的内容
*/
public String getTextFromExcel(String filePath) {
StringBuffer buff = new StringBuffer();
try {
//创建对Excel工作簿文件的引用
HSSFWorkbook wb = new HSSFWorkbook(new FileInputStream(filePath));
//创建对工作表的引用。
for (int numSheets = 0; numSheets < wb.getNumberOfSheets(); numSheets++) {
if (null != wb.getSheetAt(numSheets)) {
HSSFSheet aSheet = wb.getSheetAt(numSheets);//获得一个sheet
for (int rowNumOfSheet = 0; rowNumOfSheet <= aSheet.getLastRowNum(); rowNumOfSheet++) {
if (null != aSheet.getRow(rowNumOfSheet)) {
HSSFRow aRow = aSheet.getRow(rowNumOfSheet); //获得一个行
for (int cellNumOfRow = 0; cellNumOfRow <= aRow.getLastCellNum(); cellNumOfRow++) {
if (null != aRow.getCell(cellNumOfRow)) {
HSSFCell aCell = aRow.getCell(cellNumOfRow);//获得列值
switch(aCell.getCellType()){
case HSSFCell.CELL_TYPE_FORMULA:
break;
case HSSFCell.CELL_TYPE_NUMERIC:
buff.append(aCell.getNumericCellValue()).append('\t');break;
case HSSFCell.CELL_TYPE_STRING:
buff.append(aCell.getStringCellValue()).append('\t');break;
}
}
}
buff.append('\n');
}
}
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return buff.toString();
}
}

 

  PDF  

package textReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import org.pdfbox.pdfparser.PDFParser;
import org.pdfbox.pdmodel.PDDocument;
import org.pdfbox.util.PDFTextStripper;
public class PdfReader {
public PdfReader(){
}
/**
* @param filePath 文件路径
* @return 读出的pdf的内容
*/
public String getTextFromPdf(String filePath) {
String result = null;
FileInputStream is = null;
PDDocument document = null;
try {
is = new FileInputStream(filePath);
PDFParser parser = new PDFParser(is);
parser.parse();
document = parser.getPDDocument();
PDFTextStripper stripper = new PDFTextStripper();
result = stripper.getText(document);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (is != null) {
try {is.close();}catch(IOException e){e.printStackTrace();}
}
if (document != null) {
try{document.close();}catch (IOException e){e.printStackTrace();}
}
}
return result;
}
}

  TXT

package textReader;
import java.io.*;
public class TxtReader {
public TxtReader() {
}
/**
* @param filePath 文件路径
* @return 读出的txt的内容
*/
public String getTextFromTxt(String filePath) throws Exception {
FileReader fr = new FileReader(filePath);
BufferedReader br = new BufferedReader(fr);
StringBuffer buff = new StringBuffer();
String temp = null;
while((temp = br.readLine()) != null){
buff.append(temp + "\r\n");
}
br.close();
return buff.toString();
}
}

RTF

package textReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultStyledDocument;
import javax.swing.text.rtf.RTFEditorKit;
public class RtfReader {
public RtfReader(){
}
/**
* @param filePath 文件路径
* @return 读出的rtf的内容
*/
public String getTextFromRtf(String filePath) {
String result = null;
File file = new File(filePath);
try {
DefaultStyledDocument styledDoc = new DefaultStyledDocument();
InputStream is = new FileInputStream(file);
new RTFEditorKit().read(is, styledDoc, 0);
result = new String(styledDoc.getText(0,styledDoc.getLength()).getBytes("ISO8859_1"));
//提取文本，读取中文需要使用ISO8859_1编码，否则会出现乱码
} catch (IOException e) {
e.printStackTrace();
} catch (BadLocationException e) {
e.printStackTrace();
}
return result;
}
}

   HTML

package textReader;
import java.io.*;
public class HtmlReader {
public HtmlReader() {
}
/**
* @param filePath 文件路径
* @return 获得html的全部内容
*/
public String readHtml(String filePath) {
BufferedReader br=null;
StringBuffer sb = new  StringBuffer();
try {
br=new BufferedReader(new InputStreamReader(new FileInputStream(filePath),  "GB2312"));
String temp=null;
while((temp=br.readLine())!=null){
sb.append(temp);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}
/**
* @param filePath 文件路径
* @return 获得的html文本内容
*/
public String getTextFromHtml(String filePath) {
//得到body标签中的内容
String str= readHtml(filePath);
StringBuffer buff = new StringBuffer();
int maxindex = str.length() - 1;
int begin = 0;
int end;
//截取>和<之间的内容
while((begin = str.indexOf('>',begin)) < maxindex){
end = str.indexOf('<',begin);
if(end - begin > 1){
buff.append(str.substring(++begin, end));
}
begin = end+1;
};
return buff.toString();
}
}

 

  注意 ：若使用WPS编辑相关文档，会有错误提示，应避免。

  错误文本提示如下：

WORD

Your document seemed to be mostly unicode, but the section definition was in bytes! Trying anyway, but things may well go wrong!

EXCEL

java.lang.RuntimeException: Expected an EXTERNSHEET record but got (org.apache.poi.hssf.record.SSTRecord)
    at org.apache.poi.hssf.model.LinkTable.readExtSheetRecord(LinkTable.java:187)
    at org.apache.poi.hssf.model.LinkTable.<init>(LinkTable.java:163)
    at org.apache.poi.hssf.model.Workbook.createWorkbook(Workbook.java:199)
    at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:273)
    at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:196)
    at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:312)
    at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:293)
    at textReader.ExcelReader.getTextFromExcel(ExcelReader.java:23)
    at DocumentInfo.getContent(DocumentInfo.java:86)
    at MainFunction.main(MainFunction.java:19)

RTF

java.io.IOException: Too many close-groups in RTF text
    at javax.swing.text.rtf.RTFParser.write(Unknown Source)
    at javax.swing.text.rtf.RTFParser.writeSpecial(Unknown Source)
    at javax.swing.text.rtf.AbstractFilter.write(Unknown Source)
    at javax.swing.text.rtf.AbstractFilter.readFromStream(Unknown Source)
    at javax.swing.text.rtf.RTFEditorKit.read(Unknown Source)
    at textReader.RtfReader.getTextFromRtf(RtfReader.java:25)
    at DocumentInfo.getContent(DocumentInfo.java:74)
    at MainFunction.main(MainFunction.java:19)

BODY { FONT-FAMILY:Tahoma; FONT-SIZE:10pt } P { FONT-FAMILY:Tahoma; FONT-SIZE:10pt } DIV { FONT-FAMILY:Tahoma; FONT-SIZE:10pt } TD { FONT-FAMILY:Tahoma; FONT-SIZE:10pt }   顺便说一下，这里为什么会在write出错呢？因为 level是根据{和}来进行自增和自减的，当括号不匹配的时候就会提示该错误。 wps编辑rtf文件在格式上出了问题，{和}不匹配。 但用word或写字板下新建文件，编辑后另存为rtf文件（wps下不支持），用记事本打开可以发现添加了很多格式说明，但是{和}是匹配的，这样才不会报错。下面是具体说明：

http://www.chinaitpower.com/source/jdk122/javax/swing/text/rtf/RTFParser.java.html

posted on 2010-03-01 11:01 雪山飞狐 阅读(6540) 评论(0)  编辑  收藏 所属分类: JAVA技术