转载 -- JAVA读取WORD,EXCEL,PDF,TXT,RTF,HTML文件文本内容

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。

POI: http://jakarta.apache.org/poi/index.html
PDFBOX: http://www.pdfbox.org/




  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;  
    }  
 
} 
  TXT

Java代码
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

Java代码
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

Java代码
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


备注：转载自:http://www.blogjava.net/103335460/articles/314145.html