Java获取TXT文本和Word文件的内容并显示在页面

Java获取TXT文本和Word文件的内容并显示在页面

 

注意2003版本的word和2007以上的word需要用不同的jar包来获取！

1.TXT文本：

import java.io.BufferedReader;
import java.io.FileReader;

StringBuffer texts =new StringBuffer();    
BufferedReader br = new BufferedReader(new FileReader(file)); //
String line = null;  
while ((line = br.readLine()) != null) {   
      texts.append(line);  
}  
br.close(); 

注意：按照上面的方式，会出现中文乱码问题！

 

解决方式：加上编码转换

StringBuffer texts =new StringBuffer();    
InputStreamReader isr = new InputStreamReader(new FileInputStream(file), "UTF-8");//加上编码转换
BufferedReader read = new BufferedReader(isr);
String line = null;  
while ((line = br.readLine()) != null) {   
      texts.append(line);  
}  
br.close(); 

 

 

2.Word2003——doc格式：

import java.io.FileInputStream;
import org.apache.poi.hwpf.extractor.WordExtractor;

try {

    FileInputStream inputStream = new FileInputStream(file);
    WordExtractor extractor = new WordExtractor(inputStream);
    text = extractor.getText();

} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (Exception e) {
    e.printStackTrace();
}

 

或者

import java.io.FileInputStream;
import org.textmining.text.extraction.WordExtractor;//引入包不同

try {

    FileInputStream inputStream = new FileInputStream(file);
    WordExtractor extractor = new WordExtractor();//此处无参数
    text = extractor.getText(inputStream);//此处有参数

} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (Exception e) {
    e.printStackTrace();
}

注意注释的不同之处！

 

3.Word2007及以上版本——docx格式：

使用到的 jar 包
* poi-3.9-20121203.jar
* poi-ooxml-3.9-20121203.jar
* poi-ooxml-schemas-3.9-20121203.jar
* poi-scratchpad-3.9-20121203.jar
* xmlbeans-2.3.0.jar
* dom4j-1.6.1.jar

import org.apache.poi.POIXMLDocument;
import org.apache.poi.POIXMLTextExtractor;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.xwpf.extractor.XWPFWordExtractor;

try {

    OPCPackage opcPackage = POIXMLDocument.openPackage(filePath);
    POIXMLTextExtractor extractor = new XWPFWordExtractor(opcPackage);
    text = extractor.getText();

} catch (IOException e) {
    e.printStackTrace();
} catch (XmlException e) {
    e.printStackTrace();
} catch (OpenXML4JException e) {
    e.printStackTrace();
}

 

 

4.实例分析：

long id = Long.valueOf(request.getParameter("id"));
PolicyDao policyDao = new PolicyDao();
Policy policy = policyDao.getPolicy(id);
//读取文件中的内容
StringBuffer fileContent = new StringBuffer();
String fileName = policy.getFilePath();
String uploadPath = Configuration.getConfig().getString("policyFilesPath");
File file = new File(uploadPath+fileName);
if(file.exists()){
	String suffix = file.getName().substring(file.getName().lastIndexOf(".")+1);
	//Word2003
	if (suffix.equals("doc")) {
		FileInputStream fis = new FileInputStream(file);
		WordExtractor wordExtractor = new WordExtractor(fis);
		String text = wordExtractor.getText();
		fileContent.append(text);
	}
	//Word2007
	else if (suffix.equals("docx")) {
		OPCPackage opcPackage = POIXMLDocument.openPackage(uploadPath+fileName);
        POIXMLTextExtractor extractor = new XWPFWordExtractor(opcPackage);
        String text = extractor.getText();
        fileContent.append(text);
	}
	//TXT
	else if (suffix.equals("txt")) {
		BufferedReader bufferReader = new BufferedReader(new InputStreamReader(new FileInputStream(file),"utf-8"));
        //每从BufferedReader对象中读取一行字符。
        String line = null;
        while((line=bufferReader.readLine()) !=null){
        	fileContent.append(line);
        }
        bufferReader.close();
	}
}else{
    System.out.println("文件不存在！");
}
//输出
request.setAttribute("content", fileContent);
request.setAttribute("name", policy.getTitle());
request.setAttribute("id", policy.getId());
request.getRequestDispatcher("/frontShow/document-info.jsp").forward(request, response);
return;

 

 

出现类似于： IOException：Unable to read entire block; 362 bytes read; expected 512 bytes的异常

 

解决办法：既然expected 512 bytes ，那我就写够512bytes

ByteArrayOutputStream byteOS = new ByteArrayOutputStream(); 

FileInputStream fis = new FileInputStream(fileToBeRead);  

byte[] by = new byte[512];  

int t = fis.read(by,0,by.length); 

while(t>0){   byteOS.write(by, 0, 512);  //这里别写成t，写够512，呵呵，SB的方法对付SB的java API

     t = fis.read(by,0,by.length);  

} 

byteOS.close();  

InputStream byteIS = new ByteArrayInputStream(byteOS.toByteArray());  

HSSFWorkbook workbook = new HSSFWorkbook(byteIS);

 

实例如下：

if(file.exists()){
	String suffix = file.getName().substring(file.getName().lastIndexOf(".")+1);
	if (suffix.equalsIgnoreCase("doc")) {
		FileInputStream fis = new FileInputStream(file);
		/*byte buf[] = IOUtils.toByteArray(fis);
		ByteArrayInputStream bs = new ByteArrayInputStream(buf);*/
		ByteArrayOutputStream byteOS = new ByteArrayOutputStream(); 
		byte[] by = new byte[512];  
		int t = fis.read(by,0,by.length); 
		while(t>0){byteOS.write(by, 0, 512);  //这里别写成t，写够512，呵呵，SB的方法对付SB的java API
			t = fis.read(by,0,by.length);  
		} 
		InputStream byteIS = new ByteArrayInputStream(byteOS.toByteArray());  
		WordExtractor wordExtractor = new WordExtractor(byteIS);
		String text = wordExtractor.getText();
		fileContent.append(text);
		fis.close();
		byteOS.close();
		byteIS.close();
	}
......