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 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;        }    }   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();        }                }   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sheetfor (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.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();             }    }   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;        }            }   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();        }       }   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。