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。WORD
Java代码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
Java代码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 
Java代码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; 
}  }  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();       
}
}
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;
}}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();